git.delta.rocks / unique-network / refs/commits / 1c0b76dadcbc

--- a/.docker/Dockerfile-try-runtime
+++ b/.docker/Dockerfile-try-runtime
@@ -46,4 +46,4 @@
     echo "Fork from: $REPLICA_FROM\n" && \
     cargo build --features=try-runtime,${NETWORK}-runtime --release
 
-CMD cargo run --features=try-runtime,${NETWORK}-runtime --release -- try-runtime -ltry-runtime::cli=debug --no-spec-check-panic on-runtime-upgrade live --uri $REPLICA_FROM
+CMD cargo run --release --features ${NETWORK}-runtime,try-runtime -- try-runtime --runtime target/release/wbuild/${NETWORK}-runtime/${NETWORK}_runtime.compact.compressed.wasm -lruntime=debug -ltry-runtime::cli=debug on-runtime-upgrade --checks live --uri $REPLICA_FROM

--- a/.env
+++ b/.env
@@ -5,19 +5,19 @@
 STATEMINT_BUILD_BRANCH=release-parachains-v9320
 ACALA_BUILD_BRANCH=2.11.0
 MOONBEAM_BUILD_BRANCH=runtime-1901
-UNIQUE_MAINNET_BRANCH=release-v930033
+UNIQUE_MAINNET_BRANCH=release-v930033-fix-gas-price
 UNIQUE_REPLICA_FROM=wss://eu-ws.unique.network:443
 
 KUSAMA_MAINNET_BRANCH=release-v0.9.35
 STATEMINE_BUILD_BRANCH=release-parachains-v9330
 KARURA_BUILD_BRANCH=release-karura-2.11.0
 MOONRIVER_BUILD_BRANCH=runtime-2000
-QUARTZ_MAINNET_BRANCH=release-v930034
+QUARTZ_MAINNET_BRANCH=release-v930034-fix-gas-price
 QUARTZ_REPLICA_FROM=wss://eu-ws-quartz.unique.network:443
 
 UNQWND_MAINNET_BRANCH=release-v0.9.30
 WESTMINT_BUILD_BRANCH=parachains-v9330
-OPAL_MAINNET_BRANCH=release-v930034
+OPAL_MAINNET_BRANCH=release-v930034-fix-gas-price
 OPAL_REPLICA_FROM=wss://eu-ws-opal.unique.network:443
 
 POLKADOT_LAUNCH_BRANCH=unique-network

--- a/.github/workflows/ci-master.yml
+++ b/.github/workflows/ci-master.yml
@@ -42,3 +42,6 @@
 
   codestyle:
     uses: ./.github/workflows/codestyle.yml
+
+  polkadot-types:
+    uses: ./.github/workflows/polkadot-types.yml
\ No newline at end of file

--- a/.github/workflows/schedule-trigger-for-develop-build.yml
+++ b/.github/workflows/schedule-trigger-for-develop-build.yml
@@ -1,8 +1,8 @@
 name: schedule-trigger-for-develop-build
 on:
   # update the branch ci/develop-scheduler every night
-  schedule:
-    - cron: '0 1 * * *'
+  # schedule:
+  #   - cron: '0 1 * * *'
   # or update the branch manually
   workflow_dispatch:
   # pull_request:

--- a/Cargo.lock
+++ b/Cargo.lock
@@ -2467,7 +2467,7 @@
 [[package]]
 name = "fc-consensus"
 version = "2.0.0-dev"
-source = "git+https://github.com/uniquenetwork/frontier?branch=unique-polkadot-v0.9.36#db60b911813df1d82e60e0de7f3dfa290e60d2f0"
+source = "git+https://github.com/uniquenetwork/frontier?branch=unique-polkadot-v0.9.36#cf1894629c7df1c4dafe58aa773627a3d940da14"
 dependencies = [
  "async-trait",
  "fc-db",
@@ -2486,7 +2486,7 @@
 [[package]]
 name = "fc-db"
 version = "2.0.0-dev"
-source = "git+https://github.com/uniquenetwork/frontier?branch=unique-polkadot-v0.9.36#db60b911813df1d82e60e0de7f3dfa290e60d2f0"
+source = "git+https://github.com/uniquenetwork/frontier?branch=unique-polkadot-v0.9.36#cf1894629c7df1c4dafe58aa773627a3d940da14"
 dependencies = [
  "fp-storage",
  "kvdb-rocksdb",
@@ -2505,7 +2505,7 @@
 [[package]]
 name = "fc-mapping-sync"
 version = "2.0.0-dev"
-source = "git+https://github.com/uniquenetwork/frontier?branch=unique-polkadot-v0.9.36#db60b911813df1d82e60e0de7f3dfa290e60d2f0"
+source = "git+https://github.com/uniquenetwork/frontier?branch=unique-polkadot-v0.9.36#cf1894629c7df1c4dafe58aa773627a3d940da14"
 dependencies = [
  "fc-db",
  "fp-consensus",
@@ -2522,7 +2522,7 @@
 [[package]]
 name = "fc-rpc"
 version = "2.0.0-dev"
-source = "git+https://github.com/uniquenetwork/frontier?branch=unique-polkadot-v0.9.36#db60b911813df1d82e60e0de7f3dfa290e60d2f0"
+source = "git+https://github.com/uniquenetwork/frontier?branch=unique-polkadot-v0.9.36#cf1894629c7df1c4dafe58aa773627a3d940da14"
 dependencies = [
  "ethereum 0.14.0",
  "ethereum-types 0.14.1",
@@ -2565,7 +2565,7 @@
 [[package]]
 name = "fc-rpc-core"
 version = "1.1.0-dev"
-source = "git+https://github.com/uniquenetwork/frontier?branch=unique-polkadot-v0.9.36#db60b911813df1d82e60e0de7f3dfa290e60d2f0"
+source = "git+https://github.com/uniquenetwork/frontier?branch=unique-polkadot-v0.9.36#cf1894629c7df1c4dafe58aa773627a3d940da14"
 dependencies = [
  "ethereum 0.14.0",
  "ethereum-types 0.14.1",
@@ -2730,7 +2730,7 @@
 [[package]]
 name = "fp-consensus"
 version = "2.0.0-dev"
-source = "git+https://github.com/uniquenetwork/frontier?branch=unique-polkadot-v0.9.36#db60b911813df1d82e60e0de7f3dfa290e60d2f0"
+source = "git+https://github.com/uniquenetwork/frontier?branch=unique-polkadot-v0.9.36#cf1894629c7df1c4dafe58aa773627a3d940da14"
 dependencies = [
  "ethereum 0.14.0",
  "parity-scale-codec 3.2.1",
@@ -2742,7 +2742,7 @@
 [[package]]
 name = "fp-ethereum"
 version = "1.0.0-dev"
-source = "git+https://github.com/uniquenetwork/frontier?branch=unique-polkadot-v0.9.36#db60b911813df1d82e60e0de7f3dfa290e60d2f0"
+source = "git+https://github.com/uniquenetwork/frontier?branch=unique-polkadot-v0.9.36#cf1894629c7df1c4dafe58aa773627a3d940da14"
 dependencies = [
  "ethereum 0.14.0",
  "ethereum-types 0.14.1",
@@ -2757,7 +2757,7 @@
 [[package]]
 name = "fp-evm"
 version = "3.0.0-dev"
-source = "git+https://github.com/uniquenetwork/frontier?branch=unique-polkadot-v0.9.36#db60b911813df1d82e60e0de7f3dfa290e60d2f0"
+source = "git+https://github.com/uniquenetwork/frontier?branch=unique-polkadot-v0.9.36#cf1894629c7df1c4dafe58aa773627a3d940da14"
 dependencies = [
  "evm",
  "frame-support",
@@ -2771,7 +2771,7 @@
 [[package]]
 name = "fp-evm-mapping"
 version = "0.1.0"
-source = "git+https://github.com/uniquenetwork/frontier?branch=unique-polkadot-v0.9.36#db60b911813df1d82e60e0de7f3dfa290e60d2f0"
+source = "git+https://github.com/uniquenetwork/frontier?branch=unique-polkadot-v0.9.36#cf1894629c7df1c4dafe58aa773627a3d940da14"
 dependencies = [
  "frame-support",
  "sp-core",
@@ -2780,7 +2780,7 @@
 [[package]]
 name = "fp-rpc"
 version = "3.0.0-dev"
-source = "git+https://github.com/uniquenetwork/frontier?branch=unique-polkadot-v0.9.36#db60b911813df1d82e60e0de7f3dfa290e60d2f0"
+source = "git+https://github.com/uniquenetwork/frontier?branch=unique-polkadot-v0.9.36#cf1894629c7df1c4dafe58aa773627a3d940da14"
 dependencies = [
  "ethereum 0.14.0",
  "ethereum-types 0.14.1",
@@ -2797,7 +2797,7 @@
 [[package]]
 name = "fp-self-contained"
 version = "1.0.0-dev"
-source = "git+https://github.com/uniquenetwork/frontier?branch=unique-polkadot-v0.9.36#db60b911813df1d82e60e0de7f3dfa290e60d2f0"
+source = "git+https://github.com/uniquenetwork/frontier?branch=unique-polkadot-v0.9.36#cf1894629c7df1c4dafe58aa773627a3d940da14"
 dependencies = [
  "ethereum 0.14.0",
  "frame-support",
@@ -2810,7 +2810,7 @@
 [[package]]
 name = "fp-storage"
 version = "2.0.0"
-source = "git+https://github.com/uniquenetwork/frontier?branch=unique-polkadot-v0.9.36#db60b911813df1d82e60e0de7f3dfa290e60d2f0"
+source = "git+https://github.com/uniquenetwork/frontier?branch=unique-polkadot-v0.9.36#cf1894629c7df1c4dafe58aa773627a3d940da14"
 dependencies = [
  "parity-scale-codec 3.2.1",
  "serde",
@@ -5682,7 +5682,7 @@
 [[package]]
 name = "pallet-base-fee"
 version = "1.0.0"
-source = "git+https://github.com/uniquenetwork/frontier?branch=unique-polkadot-v0.9.36#db60b911813df1d82e60e0de7f3dfa290e60d2f0"
+source = "git+https://github.com/uniquenetwork/frontier?branch=unique-polkadot-v0.9.36#cf1894629c7df1c4dafe58aa773627a3d940da14"
 dependencies = [
  "fp-evm",
  "frame-support",
@@ -5918,7 +5918,7 @@
 [[package]]
 name = "pallet-ethereum"
 version = "4.0.0-dev"
-source = "git+https://github.com/uniquenetwork/frontier?branch=unique-polkadot-v0.9.36#db60b911813df1d82e60e0de7f3dfa290e60d2f0"
+source = "git+https://github.com/uniquenetwork/frontier?branch=unique-polkadot-v0.9.36#cf1894629c7df1c4dafe58aa773627a3d940da14"
 dependencies = [
  "ethereum 0.14.0",
  "ethereum-types 0.14.1",
@@ -5946,7 +5946,7 @@
 [[package]]
 name = "pallet-evm"
 version = "6.0.0-dev"
-source = "git+https://github.com/uniquenetwork/frontier?branch=unique-polkadot-v0.9.36#db60b911813df1d82e60e0de7f3dfa290e60d2f0"
+source = "git+https://github.com/uniquenetwork/frontier?branch=unique-polkadot-v0.9.36#cf1894629c7df1c4dafe58aa773627a3d940da14"
 dependencies = [
  "environmental",
  "evm",
@@ -6032,7 +6032,7 @@
 [[package]]
 name = "pallet-evm-precompile-simple"
 version = "2.0.0-dev"
-source = "git+https://github.com/uniquenetwork/frontier?branch=unique-polkadot-v0.9.36#db60b911813df1d82e60e0de7f3dfa290e60d2f0"
+source = "git+https://github.com/uniquenetwork/frontier?branch=unique-polkadot-v0.9.36#cf1894629c7df1c4dafe58aa773627a3d940da14"
 dependencies = [
  "fp-evm",
  "ripemd",
@@ -12965,6 +12965,7 @@
  "sp-core",
  "sp-finality-grandpa",
  "sp-inherents",
+ "sp-io",
  "sp-keystore",
  "sp-offchain",
  "sp-runtime",

--- a/crates/evm-coder/procedural/src/abi_derive/derive_enum.rs
+++ b/crates/evm-coder/procedural/src/abi_derive/derive_enum.rs
@@ -143,8 +143,7 @@
 	)
 }
 
-pub fn check_and_count_options(de: &syn::DataEnum) -> syn::Result<usize> {
-	let mut count = 0;
+pub fn check_enum_fields(de: &syn::DataEnum) -> syn::Result<()> {
 	for v in de.variants.iter() {
 		if !v.fields.is_empty() {
 			return Err(syn::Error::new(
@@ -156,12 +155,10 @@
 				v.ident.span(),
 				"Enumeration options should not have an explicit specified value",
 			));
-		} else {
-			count += 1;
 		}
 	}
 
-	Ok(count)
+	Ok(())
 }
 
 pub fn check_repr_u8(name: &syn::Ident, attrs: &[syn::Attribute]) -> syn::Result<()> {

--- a/crates/evm-coder/procedural/src/abi_derive/mod.rs
+++ b/crates/evm-coder/procedural/src/abi_derive/mod.rs
@@ -70,6 +70,7 @@
 ) -> syn::Result<proc_macro2::TokenStream> {
 	let name = &ast.ident;
 	check_repr_u8(name, &ast.attrs)?;
+	check_enum_fields(de)?;
 	let docs = extract_docs(&ast.attrs)?;
 	let enum_options = de.variants.iter();
 

--- a/node/cli/Cargo.toml
+++ b/node/cli/Cargo.toml
@@ -122,6 +122,10 @@
 git = "https://github.com/paritytech/substrate"
 branch = "polkadot-v0.9.36"
 
+[dependencies.sp-io]
+git = "https://github.com/paritytech/substrate"
+branch = "polkadot-v0.9.36"
+
 [dependencies.sp-finality-grandpa]
 git = "https://github.com/paritytech/substrate"
 branch = "polkadot-v0.9.36"

--- a/node/cli/src/command.rs
+++ b/node/cli/src/command.rs
@@ -412,6 +412,7 @@
 		#[cfg(feature = "try-runtime")]
 		Some(Subcommand::TryRuntime(cmd)) => {
 			use std::{future::Future, pin::Pin};
+			use sc_executor::{sp_wasm_interface::ExtendedHostFunctions, NativeExecutionDispatch};
 
 			let runner = cli.create_runner(cmd)?;
 
@@ -429,12 +430,21 @@
 				Ok((
 					match config.chain_spec.runtime_id() {
 						#[cfg(feature = "unique-runtime")]
-						RuntimeId::Unique => Box::pin(cmd.run::<Block, UniqueRuntimeExecutor>(config)),
+						RuntimeId::Unique => Box::pin(cmd.run::<Block, ExtendedHostFunctions<
+							sp_io::SubstrateHostFunctions,
+							<UniqueRuntimeExecutor as NativeExecutionDispatch>::ExtendHostFunctions,
+						>>()),
 
 						#[cfg(feature = "quartz-runtime")]
-						RuntimeId::Quartz => Box::pin(cmd.run::<Block, QuartzRuntimeExecutor>(config)),
+						RuntimeId::Quartz => Box::pin(cmd.run::<Block, ExtendedHostFunctions<
+							sp_io::SubstrateHostFunctions,
+							<QuartzRuntimeExecutor as NativeExecutionDispatch>::ExtendHostFunctions,
+						>>()),
 
-						RuntimeId::Opal => Box::pin(cmd.run::<Block, OpalRuntimeExecutor>(config)),
+						RuntimeId::Opal => Box::pin(cmd.run::<Block, ExtendedHostFunctions<
+							sp_io::SubstrateHostFunctions,
+							<OpalRuntimeExecutor as NativeExecutionDispatch>::ExtendHostFunctions,
+						>>()),
 						RuntimeId::Unknown(chain) => return Err(no_runtime_err!(chain).into()),
 					},
 					task_manager,

--- a/node/cli/src/service.rs
+++ b/node/cli/src/service.rs
@@ -106,7 +106,12 @@
 
 #[cfg(feature = "unique-runtime")]
 impl NativeExecutionDispatch for UniqueRuntimeExecutor {
+	/// Only enable the benchmarking host functions when we actually want to benchmark.
+	#[cfg(feature = "runtime-benchmarks")]
 	type ExtendHostFunctions = frame_benchmarking::benchmarking::HostFunctions;
+	/// Otherwise we only use the default Substrate host functions.
+	#[cfg(not(feature = "runtime-benchmarks"))]
+	type ExtendHostFunctions = ();
 
 	fn dispatch(method: &str, data: &[u8]) -> Option<Vec<u8>> {
 		unique_runtime::api::dispatch(method, data)
@@ -119,7 +124,12 @@
 
 #[cfg(feature = "quartz-runtime")]
 impl NativeExecutionDispatch for QuartzRuntimeExecutor {
+	/// Only enable the benchmarking host functions when we actually want to benchmark.
+	#[cfg(feature = "runtime-benchmarks")]
 	type ExtendHostFunctions = frame_benchmarking::benchmarking::HostFunctions;
+	/// Otherwise we only use the default Substrate host functions.
+	#[cfg(not(feature = "runtime-benchmarks"))]
+	type ExtendHostFunctions = ();
 
 	fn dispatch(method: &str, data: &[u8]) -> Option<Vec<u8>> {
 		quartz_runtime::api::dispatch(method, data)
@@ -131,7 +141,12 @@
 }
 
 impl NativeExecutionDispatch for OpalRuntimeExecutor {
+	/// Only enable the benchmarking host functions when we actually want to benchmark.
+	#[cfg(feature = "runtime-benchmarks")]
 	type ExtendHostFunctions = frame_benchmarking::benchmarking::HostFunctions;
+	/// Otherwise we only use the default Substrate host functions.
+	#[cfg(not(feature = "runtime-benchmarks"))]
+	type ExtendHostFunctions = ();
 
 	fn dispatch(method: &str, data: &[u8]) -> Option<Vec<u8>> {
 		opal_runtime::api::dispatch(method, data)

--- a/pallets/common/src/eth.rs
+++ b/pallets/common/src/eth.rs
@@ -127,7 +127,7 @@
 pub struct OptionCrossAddress {
 	/// Whether or not this CrossAdress is valid and has meaning.
 	pub status: bool,
-	/// The underlying CrossAddress. If the status is false, can be set to whatever.
+	/// The underlying CrossAddress value. If the status is false, can be set to whatever.
 	pub value: CrossAddress,
 }
 

binary blob — no preview

--- a/pallets/evm-contract-helpers/src/stubs/ContractHelpers.sol
+++ b/pallets/evm-contract-helpers/src/stubs/ContractHelpers.sol
@@ -283,6 +283,8 @@
 
 /// Ethereum representation of Optional value with CrossAddress.
 struct OptionCrossAddress {
+	/// TODO: field description
 	bool status;
+	/// TODO: field description
 	CrossAddress value;
 }

--- a/pallets/nonfungible/src/benchmarking.rs
+++ b/pallets/nonfungible/src/benchmarking.rs
@@ -228,7 +228,7 @@
 			owner: sub; collection: collection(owner); owner: cross_from_sub;
 			operator: cross_sub;
 		};
-	}: {<Pallet<T>>::set_allowance_for_all(&collection, &owner, &operator, true)}
+	}: {<Pallet<T>>::set_allowance_for_all(&collection, &owner, &operator, true)?}
 
 	allowance_for_all {
 		bench_init!{

--- a/pallets/refungible/src/benchmarking.rs
+++ b/pallets/refungible/src/benchmarking.rs
@@ -22,21 +22,17 @@
 use frame_benchmarking::{benchmarks, account};
 use pallet_common::{
 	bench_init,
-	benchmarking::{create_collection_raw, property_key, property_value, create_data},
+	benchmarking::{create_collection_raw, property_key, property_value},
 };
-use sp_core::H160;
 use sp_std::prelude::*;
-use up_data_structs::{
-	CollectionMode, MAX_ITEMS_PER_BATCH, MAX_PROPERTIES_PER_ITEM, CUSTOM_DATA_LIMIT,
-	budget::Unlimited,
-};
+use up_data_structs::{CollectionMode, MAX_ITEMS_PER_BATCH, MAX_PROPERTIES_PER_ITEM, budget::Unlimited};
 
 const SEED: u32 = 1;
 
-fn create_max_item_data<CrossAccountId: Ord>(
-	users: impl IntoIterator<Item = (CrossAccountId, u128)>,
-) -> CreateItemData<CrossAccountId> {
-	CreateItemData {
+fn create_max_item_data<T: Config>(
+	users: impl IntoIterator<Item = (T::CrossAccountId, u128)>,
+) -> CreateItemData<T> {
+	CreateItemData::<T> {
 		users: users
 			.into_iter()
 			.collect::<BTreeMap<_, _>>()
@@ -51,7 +47,7 @@
 	sender: &T::CrossAccountId,
 	users: impl IntoIterator<Item = (T::CrossAccountId, u128)>,
 ) -> Result<TokenId, DispatchError> {
-	let data: CreateItemData<T::CrossAccountId> = create_max_item_data(users);
+	let data: CreateItemData<T> = create_max_item_data::<T>(users);
 	<Pallet<T>>::create_item(&collection, sender, data, &Unlimited)?;
 	Ok(TokenId(<TokensMinted<T>>::get(&collection.id)))
 }
@@ -83,7 +79,7 @@
 			owner: sub; collection: collection(owner);
 			sender: cross_from_sub(owner); to: cross_sub;
 		};
-		let data = (0..b).map(|_| create_max_item_data([(to.clone(), 200)])).collect();
+		let data = (0..b).map(|_| create_max_item_data::<T>([(to.clone(), 200)])).collect();
 	}: {<Pallet<T>>::create_multiple_items(&collection, &sender, data, &Unlimited)?}
 
 	create_multiple_items_ex_multiple_items {
@@ -94,7 +90,7 @@
 		};
 		let data = (0..b).map(|t| {
 			bench_init!(to: cross_sub(t););
-			create_max_item_data([(to, 200)])
+			create_max_item_data::<T>([(to, 200)])
 		}).collect();
 	}: {<Pallet<T>>::create_multiple_items(&collection, &sender, data, &Unlimited)?}
 
@@ -104,7 +100,7 @@
 			owner: sub; collection: collection(owner);
 			sender: cross_from_sub(owner);
 		};
-		let data = vec![create_max_item_data((0..b).map(|u| {
+		let data = vec![create_max_item_data::<T>((0..b).map(|u| {
 			bench_init!(to: cross_sub(u););
 			(to, 200)
 		}))].try_into().unwrap();
@@ -296,7 +292,7 @@
 			owner: sub; collection: collection(owner); owner: cross_from_sub;
 			operator: cross_sub;
 		};
-	}: {<Pallet<T>>::set_allowance_for_all(&collection, &owner, &operator, true)}
+	}: {<Pallet<T>>::set_allowance_for_all(&collection, &owner, &operator, true)?}
 
 	allowance_for_all {
 		bench_init!{

--- a/pallets/refungible/src/erc_token.rs
+++ b/pallets/refungible/src/erc_token.rs
@@ -43,6 +43,9 @@
 	TotalSupply, weights::WeightInfo,
 };
 
+/// Refungible token handle contains information about token's collection and id
+///
+/// RefungibleTokenHandle doesn't check token's existance upon creation
 pub struct RefungibleTokenHandle<T: Config>(pub RefungibleHandle<T>, pub TokenId);
 
 #[solidity_interface(name = ERC1633)]

--- a/runtime/common/ethereum/sponsoring.rs
+++ b/runtime/common/ethereum/sponsoring.rs
@@ -32,14 +32,22 @@
 	Config as FungibleConfig,
 	erc::{UniqueFungibleCall, ERC20Call},
 };
-use pallet_refungible::Config as RefungibleConfig;
+use pallet_refungible::{
+	Config as RefungibleConfig,
+	erc::UniqueRefungibleCall,
+	erc_token::{RefungibleTokenHandle, UniqueRefungibleTokenCall},
+	RefungibleHandle,
+};
 use pallet_unique::Config as UniqueConfig;
 use sp_std::prelude::*;
-use up_data_structs::{CollectionMode, CreateItemData, CreateNftData, TokenId};
+use up_data_structs::{
+	CollectionMode, CreateItemData, CreateNftData, mapping::TokenAddressMapping, TokenId,
+};
 use up_sponsorship::SponsorshipHandler;
-
 use crate::{Runtime, runtime_common::sponsoring::*};
 
+mod refungible;
+
 pub type EvmSponsorshipHandler = (
 	UniqueEthSponsorshipHandler<Runtime>,
 	pallet_evm_contract_helpers::HelpersContractSponsoring<Runtime>,
@@ -53,80 +61,163 @@
 		who: &T::CrossAccountId,
 		call_context: &CallContext,
 	) -> Option<T::CrossAccountId> {
-		let collection_id = map_eth_to_id(&call_context.contract_address)?;
-		let collection = <CollectionHandle<T>>::new(collection_id)?;
-		let sponsor = collection.sponsorship.sponsor()?.clone();
-		let (method_id, mut reader) = AbiReader::new_call(&call_context.input).ok()?;
-		Some(T::CrossAccountId::from_sub(match &collection.mode {
-			CollectionMode::NFT => {
-				let call = <UniqueNFTCall<T>>::parse(method_id, &mut reader).ok()??;
-				match call {
-					UniqueNFTCall::TokenProperties(TokenPropertiesCall::SetProperty {
-						token_id,
-						key,
-						value,
-						..
-					}) => {
-						let token_id: TokenId = token_id.try_into().ok()?;
-						withdraw_set_token_property::<T>(
+		if let Some(collection_id) = map_eth_to_id(&call_context.contract_address) {
+			let collection = <CollectionHandle<T>>::new(collection_id)?;
+			let sponsor = collection.sponsorship.sponsor()?.clone();
+			let (method_id, mut reader) = AbiReader::new_call(&call_context.input).ok()?;
+			Some(T::CrossAccountId::from_sub(match &collection.mode {
+				CollectionMode::NFT => {
+					let call = <UniqueNFTCall<T>>::parse(method_id, &mut reader).ok()??;
+					match call {
+						UniqueNFTCall::TokenProperties(TokenPropertiesCall::SetProperty {
+							token_id,
+							key,
+							value,
+							..
+						}) => {
+							let token_id: TokenId = token_id.try_into().ok()?;
+							withdraw_set_token_property::<T>(
+								&collection,
+								&who,
+								&token_id,
+								key.len() + value.len(),
+							)
+							.map(|()| sponsor)
+						}
+						UniqueNFTCall::ERC721UniqueExtensions(
+							ERC721UniqueExtensionsCall::Transfer { token_id, .. },
+						) => {
+							let token_id: TokenId = token_id.try_into().ok()?;
+							withdraw_transfer::<T>(&collection, &who, &token_id).map(|()| sponsor)
+						}
+						UniqueNFTCall::ERC721UniqueMintable(
+							ERC721UniqueMintableCall::Mint { .. }
+							| ERC721UniqueMintableCall::MintCheckId { .. }
+							| ERC721UniqueMintableCall::MintWithTokenUri { .. }
+							| ERC721UniqueMintableCall::MintWithTokenUriCheckId { .. },
+						) => withdraw_create_item::<T>(
 							&collection,
 							&who,
-							&token_id,
-							key.len() + value.len(),
+							&CreateItemData::NFT(CreateNftData::default()),
 						)
-						.map(|()| sponsor)
-					}
-					UniqueNFTCall::ERC721UniqueExtensions(
-						ERC721UniqueExtensionsCall::Transfer { token_id, .. },
-					) => {
-						let token_id: TokenId = token_id.try_into().ok()?;
-						withdraw_transfer::<T>(&collection, &who, &token_id).map(|()| sponsor)
+						.map(|()| sponsor),
+						UniqueNFTCall::ERC721(ERC721Call::TransferFrom {
+							token_id, from, ..
+						}) => {
+							let token_id: TokenId = token_id.try_into().ok()?;
+							let from = T::CrossAccountId::from_eth(from);
+							withdraw_transfer::<T>(&collection, &from, &token_id).map(|()| sponsor)
+						}
+						UniqueNFTCall::ERC721(ERC721Call::Approve { token_id, .. }) => {
+							let token_id: TokenId = token_id.try_into().ok()?;
+							withdraw_approve::<T>(&collection, who.as_sub(), &token_id)
+								.map(|()| sponsor)
+						}
+						_ => None,
 					}
-					UniqueNFTCall::ERC721UniqueMintable(
-						ERC721UniqueMintableCall::Mint { .. }
-						| ERC721UniqueMintableCall::MintCheckId { .. }
-						| ERC721UniqueMintableCall::MintWithTokenUri { .. }
-						| ERC721UniqueMintableCall::MintWithTokenUriCheckId { .. },
-					) => withdraw_create_item::<T>(
-						&collection,
-						&who,
-						&CreateItemData::NFT(CreateNftData::default()),
-					)
-					.map(|()| sponsor),
-					UniqueNFTCall::ERC721(ERC721Call::TransferFrom { token_id, from, .. }) => {
-						let token_id: TokenId = token_id.try_into().ok()?;
-						let from = T::CrossAccountId::from_eth(from);
-						withdraw_transfer::<T>(&collection, &from, &token_id).map(|()| sponsor)
-					}
-					UniqueNFTCall::ERC721(ERC721Call::Approve { token_id, .. }) => {
-						let token_id: TokenId = token_id.try_into().ok()?;
-						withdraw_approve::<T>(&collection, who.as_sub(), &token_id)
-							.map(|()| sponsor)
-					}
-					_ => None,
 				}
-			}
-			CollectionMode::Fungible(_) => {
-				let call = <UniqueFungibleCall<T>>::parse(method_id, &mut reader).ok()??;
-				#[allow(clippy::single_match)]
-				match call {
-					UniqueFungibleCall::ERC20(ERC20Call::Transfer { .. }) => {
-						withdraw_transfer::<T>(&collection, who, &TokenId::default())
-							.map(|()| sponsor)
-					}
-					UniqueFungibleCall::ERC20(ERC20Call::TransferFrom { from, .. }) => {
-						let from = T::CrossAccountId::from_eth(from);
-						withdraw_transfer::<T>(&collection, &from, &TokenId::default())
-							.map(|()| sponsor)
+				CollectionMode::ReFungible => {
+					let call = <UniqueRefungibleCall<T>>::parse(method_id, &mut reader).ok()??;
+					refungible::call_sponsor(call, collection, who).map(|()| sponsor)
+				}
+				CollectionMode::Fungible(_) => {
+					let call = <UniqueFungibleCall<T>>::parse(method_id, &mut reader).ok()??;
+					match call {
+						UniqueFungibleCall::ERC20(ERC20Call::Transfer { .. }) => {
+							withdraw_transfer::<T>(&collection, who, &TokenId::default())
+								.map(|()| sponsor)
+						}
+						UniqueFungibleCall::ERC20(ERC20Call::TransferFrom { from, .. }) => {
+							let from = T::CrossAccountId::from_eth(from);
+							withdraw_transfer::<T>(&collection, &from, &TokenId::default())
+								.map(|()| sponsor)
+						}
+						UniqueFungibleCall::ERC20(ERC20Call::Approve { .. }) => {
+							withdraw_approve::<T>(&collection, who.as_sub(), &TokenId::default())
+								.map(|()| sponsor)
+						}
+						_ => None,
 					}
-					UniqueFungibleCall::ERC20(ERC20Call::Approve { .. }) => {
-						withdraw_approve::<T>(&collection, who.as_sub(), &TokenId::default())
-							.map(|()| sponsor)
-					}
-					_ => None,
 				}
+			}?))
+		} else {
+			let (collection_id, token_id) =
+				T::EvmTokenAddressMapping::address_to_token(&call_context.contract_address)?;
+			let collection = <CollectionHandle<T>>::new(collection_id)?;
+			if collection.mode != CollectionMode::ReFungible {
+				return None;
 			}
-			_ => None,
-		}?))
+			let sponsor = collection.sponsorship.sponsor()?.clone();
+			let rft_collection = RefungibleHandle::cast(collection);
+			// Token existance isn't checked at this point and should be checked in `withdraw` method.
+			let token = RefungibleTokenHandle(rft_collection, token_id);
+
+			let (method_id, mut reader) = AbiReader::new_call(&call_context.input).ok()?;
+			let call = <UniqueRefungibleTokenCall<T>>::parse(method_id, &mut reader).ok()??;
+			Some(T::CrossAccountId::from_sub(
+				refungible::token_call_sponsor(call, token, who).map(|()| sponsor)?,
+			))
+		}
+	}
+}
+
+mod common {
+	use super::*;
+
+	use pallet_common::erc::{CollectionCall};
+
+	pub fn collection_call_sponsor<T>(
+		call: CollectionCall<T>,
+		_collection: CollectionHandle<T>,
+		_who: &T::CrossAccountId,
+	) -> Option<()>
+	where
+		T: UniqueConfig + FungibleConfig + NonfungibleConfig + RefungibleConfig,
+	{
+		use CollectionCall::*;
+
+		match call {
+			// Readonly
+			ERC165Call(_, _)
+			| CollectionProperty { .. }
+			| CollectionProperties { .. }
+			| HasCollectionPendingSponsor
+			| CollectionSponsor
+			| ContractAddress
+			| AllowlistedCross { .. }
+			| IsOwnerOrAdminEth { .. }
+			| IsOwnerOrAdminCross { .. }
+			| CollectionOwner
+			| CollectionAdmins
+			| CollectionLimits
+			| CollectionNestingRestrictedIds
+			| CollectionNestingPermissions
+			| UniqueCollectionType => None,
+
+			// Not sponsored
+			AddToCollectionAllowList { .. }
+			| AddToCollectionAllowListCross { .. }
+			| RemoveFromCollectionAllowList { .. }
+			| RemoveFromCollectionAllowListCross { .. }
+			| AddCollectionAdminCross { .. }
+			| RemoveCollectionAdminCross { .. }
+			| AddCollectionAdmin { .. }
+			| RemoveCollectionAdmin { .. }
+			| SetNestingBool { .. }
+			| SetNesting { .. }
+			| SetCollectionAccess { .. }
+			| SetCollectionMintMode { .. }
+			| SetOwner { .. }
+			| ChangeCollectionOwnerCross { .. }
+			| SetCollectionProperty { .. }
+			| SetCollectionProperties { .. }
+			| DeleteCollectionProperty { .. }
+			| DeleteCollectionProperties { .. }
+			| SetCollectionSponsor { .. }
+			| SetCollectionSponsorCross { .. }
+			| SetCollectionLimit { .. }
+			| ConfirmCollectionSponsorship
+			| RemoveCollectionSponsor => None,
+		}
 	}
 }

--- a/runtime/common/runtime_apis.rs
+++ b/runtime/common/runtime_apis.rs
@@ -780,15 +780,16 @@
 
             #[cfg(feature = "try-runtime")]
             impl frame_try_runtime::TryRuntime<Block> for Runtime {
-                fn on_runtime_upgrade() -> (frame_support::pallet_prelude::Weight, frame_support::pallet_prelude::Weight) {
+                fn on_runtime_upgrade(checks: bool) -> (frame_support::pallet_prelude::Weight, frame_support::pallet_prelude::Weight) {
                     log::info!("try-runtime::on_runtime_upgrade unique-chain.");
-                    let weight = Executive::try_runtime_upgrade().unwrap();
+                    let weight = Executive::try_runtime_upgrade(checks).unwrap();
                     (weight, crate::config::substrate::RuntimeBlockWeights::get().max_block)
                 }
 
                 fn execute_block(
                     block: Block,
                     state_root_check: bool,
+                    signature_check: bool,
                     select: frame_try_runtime::TryStateSelect
                 ) -> frame_support::pallet_prelude::Weight {
                     log::info!(
@@ -799,7 +800,7 @@
                         select,
                     );
 
-                    Executive::try_execute_block(block, state_root_check, select).unwrap()
+                    Executive::try_execute_block(block, state_root_check, signature_check, select).unwrap()
                 }
             }
         }

--- a/runtime/opal/Cargo.toml
+++ b/runtime/opal/Cargo.toml
@@ -91,6 +91,7 @@
     'pallet-unique-scheduler-v2/try-runtime',
     'pallet-maintenance/try-runtime',
     'pallet-test-utils?/try-runtime',
+    'fp-self-contained/try-runtime',
 ]
 std = [
     'codec/std',

86    'pallet-evm-transaction-payment/try-runtime',86    'pallet-evm-transaction-payment/try-runtime',
87    'pallet-evm-migration/try-runtime',87    'pallet-evm-migration/try-runtime',
88    'pallet-maintenance/try-runtime',88    'pallet-maintenance/try-runtime',
89    'fp-self-contained/try-runtime',
89]90]
90std = [91std = [
91    'codec/std',92    'codec/std',

--- a/runtime/unique/Cargo.toml
+++ b/runtime/unique/Cargo.toml
@@ -87,6 +87,7 @@
     'pallet-evm-transaction-payment/try-runtime',
     'pallet-evm-migration/try-runtime',
     'pallet-maintenance/try-runtime',
+    'fp-self-contained/try-runtime',
 ]
 std = [
     'codec/std',

--- a/tests/.eslintrc.json
+++ b/tests/.eslintrc.json
@@ -18,6 +18,9 @@
         "mocha"
     ],
     "rules": {
+        "@typescript-eslint/no-floating-promises": [
+            "error"
+        ],
         "indent": [
             "error",
             2,

--- a/tests/package.json
+++ b/tests/package.json
@@ -11,8 +11,8 @@
     "@types/chai-subset": "^1.3.3",
     "@types/mocha": "^10.0.0",
     "@types/node": "^18.11.2",
-    "@typescript-eslint/eslint-plugin": "^5.40.1",
-    "@typescript-eslint/parser": "^5.40.1",
+    "@typescript-eslint/eslint-plugin": "^5.47.0",
+    "@typescript-eslint/parser": "^5.47.0",
     "chai": "^4.3.6",
     "chai-subset": "^1.6.0",
     "eslint": "^8.25.0",

--- a/tests/src/apiConsts.test.ts
+++ b/tests/src/apiConsts.test.ts
@@ -46,33 +46,33 @@
 
 describe('integration test: API UNIQUE consts', () => {
   let api: ApiPromise;
-  
+
   before(async () => {
     await usingPlaygrounds(async (helper) => {
       api = await helper.getApi();
     });
   });
-  
+
   itSub('DEFAULT_NFT_COLLECTION_LIMITS', () => {
     expect(api.consts.unique.nftDefaultCollectionLimits.toHuman()).to.deep.equal(DEFAULT_COLLETCTION_LIMIT);
   });
-  
+
   itSub('DEFAULT_RFT_COLLECTION_LIMITS', () => {
     expect(api.consts.unique.rftDefaultCollectionLimits.toHuman()).to.deep.equal(DEFAULT_COLLETCTION_LIMIT);
   });
-  
+
   itSub('DEFAULT_FT_COLLECTION_LIMITS', () => {
     expect(api.consts.unique.ftDefaultCollectionLimits.toHuman()).to.deep.equal(DEFAULT_COLLETCTION_LIMIT);
   });
-  
+
   itSub('MAX_COLLECTION_NAME_LENGTH', () => {
     checkConst(api.consts.unique.maxCollectionNameLength, MAX_COLLECTION_NAME_LENGTH);
   });
-  
+
   itSub('MAX_COLLECTION_DESCRIPTION_LENGTH', () => {
     checkConst(api.consts.unique.maxCollectionDescriptionLength, MAX_COLLECTION_DESCRIPTION_LENGTH);
   });
-  
+
   itSub('MAX_COLLECTION_PROPERTIES_SIZE', () => {
     checkConst(api.consts.unique.maxCollectionPropertiesSize, MAX_COLLECTION_PROPERTIES_SIZE);
   });
@@ -84,31 +84,31 @@
   itSub('MAX_PROPERTY_KEY_LENGTH', () => {
     checkConst(api.consts.unique.maxPropertyKeyLength, MAX_PROPERTY_KEY_LENGTH);
   });
-  
+
   itSub('MAX_PROPERTY_VALUE_LENGTH', () => {
     checkConst(api.consts.unique.maxPropertyValueLength, MAX_PROPERTY_VALUE_LENGTH);
   });
-  
+
   itSub('MAX_PROPERTIES_PER_ITEM', () => {
     checkConst(api.consts.unique.maxPropertiesPerItem, MAX_PROPERTIES_PER_ITEM);
   });
-  
+
   itSub('NESTING_BUDGET', () => {
     checkConst(api.consts.unique.nestingBudget, NESTING_BUDGET);
   });
-  
+
   itSub('MAX_TOKEN_PROPERTIES_SIZE', () => {
     checkConst(api.consts.unique.maxTokenPropertiesSize, MAX_TOKEN_PROPERTIES_SIZE);
   });
-  
+
   itSub('COLLECTION_ADMINS_LIMIT', () => {
     checkConst(api.consts.unique.collectionAdminsLimit, COLLECTION_ADMINS_LIMIT);
   });
-  
+
   itSub('HELPERS_CONTRACT_ADDRESS', () => {
     expect(api.consts.evmContractHelpers.contractAddress.toString().toLowerCase()).to.be.equal(HELPERS_CONTRACT_ADDRESS.toLowerCase());
   });
-  
+
   itSub('EVM_COLLECTION_HELPERS_ADDRESS', () => {
     expect(api.consts.common.contractAddress.toString().toLowerCase()).to.be.equal(EVM_COLLECTION_HELPERS_ADDRESS.toLowerCase());
   });

--- a/tests/src/app-promotion.seqtest.ts
+++ b/tests/src/app-promotion.seqtest.ts
@@ -50,31 +50,31 @@
       await expect(helper.signTransaction(nonAdmin, api.tx.appPromotion.setAdminAddress({Substrate: nonAdmin.address}))).to.be.rejected;
       await expect(helper.signTransaction(nonAdmin, api.tx.sudo.sudo(api.tx.appPromotion.setAdminAddress({Substrate: nonAdmin.address})))).to.be.rejected;
     });
-    
+
     itSub('can be any valid CrossAccountId', async ({helper}) => {
       // We are not going to set an eth address as a sponsor,
       // but we do want to check, it doesn't break anything;
       const api = helper.getApi();
       const [account] = await helper.arrange.createAccounts([10n], donor);
-      const ethAccount = helper.address.substrateToEth(account.address); 
+      const ethAccount = helper.address.substrateToEth(account.address);
       // Alice sets Ethereum address as a sudo. Then Substrate address back...
       await expect(helper.signTransaction(superuser, api.tx.sudo.sudo(api.tx.appPromotion.setAdminAddress({Ethereum: ethAccount})))).to.be.fulfilled;
       await expect(helper.signTransaction(superuser, api.tx.sudo.sudo(api.tx.appPromotion.setAdminAddress({Substrate: palletAdmin.address})))).to.be.fulfilled;
-        
+
       // ...It doesn't break anything;
       const collection = await helper.nft.mintCollection(account, {name: 'New', description: 'New Collection', tokenPrefix: 'Promotion'});
       await expect(helper.signTransaction(account, api.tx.appPromotion.sponsorCollection(collection.collectionId))).to.be.rejected;
     });
-  
+
     itSub('can be reassigned', async ({helper}) => {
       const api = helper.getApi();
       const [oldAdmin, newAdmin, collectionOwner] = await helper.arrange.createAccounts([10n, 10n, 10n], donor);
       const collection  = await helper.nft.mintCollection(collectionOwner, {name: 'New', description: 'New Collection', tokenPrefix: 'Promotion'});
-        
+
       await expect(helper.signTransaction(superuser, api.tx.sudo.sudo(api.tx.appPromotion.setAdminAddress({Substrate: oldAdmin.address})))).to.be.fulfilled;
       await expect(helper.signTransaction(superuser, api.tx.sudo.sudo(api.tx.appPromotion.setAdminAddress({Substrate: newAdmin.address})))).to.be.fulfilled;
       await expect(helper.signTransaction(oldAdmin, api.tx.appPromotion.sponsorCollection(collection.collectionId))).to.be.rejected;
-        
+
       await expect(helper.signTransaction(newAdmin, api.tx.appPromotion.sponsorCollection(collection.collectionId))).to.be.fulfilled;
     });
   });

--- a/tests/src/approve.test.ts
+++ b/tests/src/approve.test.ts
@@ -538,7 +538,7 @@
     const approveTx = () => helper.rft.approveToken(alice, collectionId, 1, {Substrate: bob.address});
     await expect(approveTx()).to.be.rejected;
   });
-  
+
   itSub('[nft] Approve transfer of a token that does not exist', async ({helper}) => {
     const {collectionId} = await helper.nft.mintCollection(alice, {name: 'col', description: 'descr', tokenPrefix: 'COL'});
     const approveTx = () => helper.nft.approveToken(alice, collectionId, 2, {Substrate: bob.address});
@@ -639,7 +639,7 @@
     await helper.rft.setAllowanceForAll(alice, collectionId, {Substrate: bob.address}, true);
     const checkAfterApproval = await helper.rft.allowanceForAll(collectionId, {Substrate: alice.address}, {Substrate: bob.address});
     expect(checkAfterApproval).to.be.true;
-    
+
     await helper.rft.setAllowanceForAll(alice, collectionId, {Substrate: bob.address}, false);
     const checkAfterDisapproval = await helper.rft.allowanceForAll(collectionId, {Substrate: alice.address}, {Substrate: bob.address});
     expect(checkAfterDisapproval).to.be.false;

--- a/tests/src/burnItem.test.ts
+++ b/tests/src/burnItem.test.ts
@@ -185,7 +185,7 @@
     const collection = await helper.nft.mintCollection(alice, {name: 'Coll', description: 'Desc', tokenPrefix: 'T'});
     const tokenAlice = await collection.mintToken(alice, {Substrate: alice.address});
     const tokenBob = await collection.mintToken(alice, {Substrate: bob.address});
-    
+
     // 1. Zero burn of own tokens allowed:
     await helper.executeExtrinsic(alice, 'api.tx.unique.burnItem', [collection.collectionId, tokenAlice.tokenId, 0]);
     // 2. Zero burn of non-owned tokens not allowed:

--- a/tests/src/calibrate.ts
+++ b/tests/src/calibrate.ts
@@ -295,6 +295,7 @@
   }
 }
 
+// eslint-disable-next-line @typescript-eslint/no-floating-promises
 (async () => {
   await usingEthPlaygrounds(async (helper: EthUniqueHelper, privateKey) => {
     // Subsequent runs reduce error, as price line is not actually straight, this is a curve

--- a/tests/src/createCollection.test.ts
+++ b/tests/src/createCollection.test.ts
@@ -127,7 +127,7 @@
     const mintCollectionTx = () => helper.nft.mintCollection(alice, {name: 'name', description: 'descr', tokenPrefix: 'A'.repeat(17)});
     await expect(mintCollectionTx()).to.be.rejectedWith('Verification Error');
   });
-  
+
   itSub('(!negative test!) fails when bad limits are set', async ({helper}) => {
     const mintCollectionTx = () => helper.nft.mintCollection(alice, {name: 'name', description: 'descr', tokenPrefix: 'COL', limits: {tokenLimit: 0}});
     await expect(mintCollectionTx()).to.be.rejectedWith(/common\.CollectionTokenLimitExceeded/);

--- a/tests/src/createMultipleItems.test.ts
+++ b/tests/src/createMultipleItems.test.ts
@@ -272,8 +272,8 @@
 
     const types = ['NFT', 'Fungible', 'ReFungible'];
     await expect(helper.executeExtrinsic(
-      alice, 
-      'api.tx.unique.createMultipleItems', 
+      alice,
+      'api.tx.unique.createMultipleItems',
       [collectionId, {Substrate: alice.address}, types],
     )).to.be.rejectedWith(/nonfungible\.NotNonfungibleDataUsedToMintFungibleCollectionToken/);
   });

--- a/tests/src/eth/abi/reFungibleDeprecated.json
+++ b/tests/src/eth/abi/reFungibleDeprecated.json
@@ -98,5 +98,33 @@
     "outputs": [],
     "stateMutability": "nonpayable",
     "type": "function"
+  },
+  {
+    "inputs": [
+      { "internalType": "address", "name": "to", "type": "address" },
+      { "internalType": "uint256[]", "name": "tokenIds", "type": "uint256[]" }
+    ],
+    "name": "mintBulk",
+    "outputs": [{ "internalType": "bool", "name": "", "type": "bool" }],
+    "stateMutability": "nonpayable",
+    "type": "function"
+  },
+  {
+    "inputs": [
+      { "internalType": "address", "name": "to", "type": "address" },
+      {
+        "components": [
+          { "internalType": "uint256", "name": "field_0", "type": "uint256" },
+          { "internalType": "string", "name": "field_1", "type": "string" }
+        ],
+        "internalType": "struct Tuple0[]",
+        "name": "tokens",
+        "type": "tuple[]"
+      }
+    ],
+    "name": "mintBulkWithTokenURI",
+    "outputs": [{ "internalType": "bool", "name": "", "type": "bool" }],
+    "stateMutability": "nonpayable",
+    "type": "function"
   }
 ]

--- a/tests/src/eth/api/ContractHelpers.sol
+++ b/tests/src/eth/api/ContractHelpers.sol
@@ -183,7 +183,9 @@
 
 /// Ethereum representation of Optional value with CrossAddress.
 struct OptionCrossAddress {
+	/// TODO: field description
 	bool status;
+	/// TODO: field description
 	CrossAddress value;
 }
 

--- a/tests/src/eth/collectionSponsoring.test.ts
+++ b/tests/src/eth/collectionSponsoring.test.ts
@@ -15,10 +15,10 @@
 // along with Unique Network. If not, see <http://www.gnu.org/licenses/>.
 
 import {IKeyringPair} from '@polkadot/types/types';
-import {usingPlaygrounds} from '../util/index';
+import {Pallets, requirePalletsOrSkip, usingPlaygrounds} from '../util/index';
 import {itEth, expect} from './util';
 
-describe('evm collection sponsoring', () => {
+describe('evm nft collection sponsoring', () => {
   let donor: IKeyringPair;
   let alice: IKeyringPair;
   let nominal: bigint;
@@ -101,12 +101,14 @@
       expect(await collectionEvm.methods.hasCollectionPendingSponsor().call({from: owner})).to.be.true;
 
       await collectionEvm.methods.confirmCollectionSponsorship().send({from: sponsor});
+      let sponsorStruct = await collectionEvm.methods.collectionSponsor().call({from: owner});
+      expect(helper.address.restoreCrossAccountFromBigInt(BigInt(sponsorStruct.sub))).to.be.eq(helper.address.ethToSubstrate(sponsor, true));
       expect(await collectionEvm.methods.hasCollectionPendingSponsor().call({from: owner})).to.be.false;
 
       await collectionEvm.methods.removeCollectionSponsor().send({from: owner});
 
-      const sponsorTuple = await collectionEvm.methods.collectionSponsor().call({from: owner});
-      expect(sponsorTuple.eth).to.be.eq('0x0000000000000000000000000000000000000000');
+      sponsorStruct = await collectionEvm.methods.collectionSponsor().call({from: owner});
+      expect(sponsorStruct.eth).to.be.eq('0x0000000000000000000000000000000000000000');
     }));
 
   [
@@ -142,7 +144,7 @@
       expect(nextTokenId).to.be.equal('1');
 
       // Set collection permissions:
-      const oldPermissions = (await collectionSub.getData())!.raw.permissions; // (await getDetailedCollectionInfo(api, collectionId))!.permissions.toHuman();
+      const oldPermissions = (await collectionSub.getData())!.raw.permissions;
       expect(oldPermissions.mintMode).to.be.false;
       expect(oldPermissions.access).to.be.equal('Normal');
 
@@ -150,12 +152,13 @@
       await collectionEvm.methods.addToCollectionAllowListCross(userCross).send({from: owner});
       await collectionEvm.methods.setCollectionMintMode(true).send({from: owner});
 
-      const newPermissions = (await collectionSub.getData())!.raw.permissions; // (await getDetailedCollectionInfo(api, collectionId))!.permissions.toHuman();
+      const newPermissions = (await collectionSub.getData())!.raw.permissions;
       expect(newPermissions.mintMode).to.be.true;
       expect(newPermissions.access).to.be.equal('AllowList');
 
       const ownerBalanceBefore = await helper.balance.getSubstrate(helper.address.ethToSubstrate(owner));
       const sponsorBalanceBefore = await helper.balance.getSubstrate(helper.address.ethToSubstrate(sponsorEth));
+      const userBalanceBefore =  await helper.balance.getSubstrate(helper.address.ethToSubstrate(user));
 
       // User can mint token without balance:
       {
@@ -179,7 +182,7 @@
 
         expect(await collectionEvm.methods.tokenURI(nextTokenId).call()).to.be.equal('Test URI');
         expect(ownerBalanceBefore).to.be.eq(ownerBalanceAfter);
-        expect(userBalanceAfter).to.be.eq(0n);
+        expect(userBalanceAfter).to.be.eq(userBalanceBefore);
         expect(sponsorBalanceBefore > sponsorBalanceAfter).to.be.true;
       }
     }));
@@ -315,3 +318,531 @@
     expect(collectionSponsor).to.deep.eq({Unconfirmed: sponsorSub.address});
   });
 });
+
+describe('evm RFT collection sponsoring', () => {
+  let donor: IKeyringPair;
+  let alice: IKeyringPair;
+  let nominal: bigint;
+
+  before(async function() {
+    await usingPlaygrounds(async (helper, privateKey) => {
+      requirePalletsOrSkip(this, helper, [Pallets.ReFungible]);
+      donor = await privateKey({filename: __filename});
+      [alice] = await helper.arrange.createAccounts([100n], donor);
+      nominal = helper.balance.getOneTokenNominal();
+    });
+  });
+
+  [
+    'mintCross',
+    'mintWithTokenURI',
+  ].map(testCase =>
+    itEth(`[${testCase}] sponsors mint transactions`, async ({helper}) => {
+      const collection = await helper.rft.mintCollection(alice, {tokenPrefix: 'spnr', permissions: {mintMode: true}, tokenPropertyPermissions: [
+        {key: 'URI', permission: {tokenOwner: true, mutable: true, collectionAdmin: true}},
+      ]});
+
+      const owner = await helper.eth.createAccountWithBalance(donor);
+      await collection.setSponsor(alice, alice.address);
+      await collection.confirmSponsorship(alice);
+
+      const minter = helper.eth.createAccount();
+      const minterCross = helper.ethCrossAccount.fromAddress(minter);
+      expect(await helper.balance.getEthereum(minter)).to.equal(0n);
+
+      const collectionAddress = helper.ethAddress.fromCollectionId(collection.collectionId);
+      const contract = await helper.ethNativeContract.collection(collectionAddress, 'rft', minter, true);
+
+      await collection.addToAllowList(alice, {Ethereum: minter});
+      await collection.addAdmin(alice, {Ethereum: owner});
+      const collectionHelpers = await helper.ethNativeContract.collectionHelpers(owner);
+      await collectionHelpers.methods.makeCollectionERC721MetadataCompatible(collectionAddress, 'base/')
+        .send();
+
+      let mintingResult;
+      let tokenId;
+      switch (testCase) {
+        case 'mintCross':
+          mintingResult = await contract.methods.mintCross(minterCross, []).send();
+          break;
+        case 'mintWithTokenURI':
+          mintingResult = await contract.methods.mintWithTokenURI(minter, 'Test URI').send();
+          tokenId = mintingResult.events.Transfer.returnValues.tokenId;
+          expect(await contract.methods.tokenURI(tokenId).call()).to.be.equal('Test URI');
+          break;
+      }
+
+      const events = helper.eth.normalizeEvents(mintingResult.events);
+      expect(events).to.deep.include({
+        address: collectionAddress,
+        event: 'Transfer',
+        args: {
+          from: '0x0000000000000000000000000000000000000000',
+          to: minter,
+          tokenId: '1',
+        },
+      });
+    }));
+
+  [
+    'setCollectionSponsorCross',
+    'setCollectionSponsor', // Soft-deprecated
+  ].map(testCase =>
+    itEth(`[${testCase}] can remove collection sponsor`, async ({helper}) => {
+      const owner = await helper.eth.createAccountWithBalance(donor);
+      const collectionHelpers = await helper.ethNativeContract.collectionHelpers(owner);
+
+      let result = await collectionHelpers.methods.createRFTCollection('Sponsor collection', '1', '1').send({value: Number(2n * nominal)});
+      const collectionIdAddress = helper.ethAddress.normalizeAddress(result.events.CollectionCreated.returnValues.collectionId);
+      const sponsor = await helper.eth.createAccountWithBalance(donor);
+      const sponsorCross = helper.ethCrossAccount.fromAddress(sponsor);
+      const collectionEvm = await helper.ethNativeContract.collection(collectionIdAddress, 'rft', owner, testCase === 'setCollectionSponsor');
+
+      expect(await collectionEvm.methods.hasCollectionPendingSponsor().call({from: owner})).to.be.false;
+      result = await collectionEvm.methods[testCase](testCase === 'setCollectionSponsor' ? sponsor : sponsorCross).send({from: owner});
+      expect(await collectionEvm.methods.hasCollectionPendingSponsor().call({from: owner})).to.be.true;
+
+      await collectionEvm.methods.confirmCollectionSponsorship().send({from: sponsor});
+      expect(await collectionEvm.methods.hasCollectionPendingSponsor().call({from: owner})).to.be.false;
+
+      await collectionEvm.methods.removeCollectionSponsor().send({from: owner});
+
+      const sponsorStruct = await collectionEvm.methods.collectionSponsor().call({from: owner});
+      expect(sponsorStruct.eth).to.be.eq('0x0000000000000000000000000000000000000000');
+    }));
+
+  [
+    'setCollectionSponsorCross',
+    'setCollectionSponsor', // Soft-deprecated
+  ].map(testCase =>
+    itEth(`[${testCase}] Can sponsor from evm address via access list`, async ({helper}) => {
+      const owner = await helper.eth.createAccountWithBalance(donor);
+      const sponsorEth = await helper.eth.createAccountWithBalance(donor);
+      const sponsorCrossEth = helper.ethCrossAccount.fromAddress(sponsorEth);
+
+      const {collectionId, collectionAddress} = await helper.eth.createERC721MetadataCompatibleRFTCollection(owner, 'Sponsor collection', '1', '1', '');
+
+      const collectionSub = helper.rft.getCollectionObject(collectionId);
+      const collectionEvm = await helper.ethNativeContract.collection(collectionAddress, 'rft', owner, testCase === 'setCollectionSponsor');
+
+      // Set collection sponsor:
+      await collectionEvm.methods[testCase](testCase === 'setCollectionSponsor' ? sponsorEth : sponsorCrossEth).send({from: owner});
+      let sponsorship = (await collectionSub.getData())!.raw.sponsorship;
+      expect(sponsorship.Unconfirmed).to.be.eq(helper.address.ethToSubstrate(sponsorEth, true));
+      // Account cannot confirm sponsorship if it is not set as a sponsor
+      await expect(collectionEvm.methods.confirmCollectionSponsorship().call()).to.be.rejectedWith('ConfirmSponsorshipFail');
+
+      // Sponsor can confirm sponsorship:
+      await collectionEvm.methods.confirmCollectionSponsorship().send({from: sponsorEth});
+      sponsorship = (await collectionSub.getData())!.raw.sponsorship;
+      expect(sponsorship.Confirmed).to.be.eq(helper.address.ethToSubstrate(sponsorEth, true));
+
+      // Create user with no balance:
+      const user = helper.eth.createAccount();
+      const userCross = helper.ethCrossAccount.fromAddress(user);
+      const nextTokenId = await collectionEvm.methods.nextTokenId().call();
+      expect(nextTokenId).to.be.equal('1');
+
+      // Set collection permissions:
+      const oldPermissions = (await collectionSub.getData())!.raw.permissions;
+      expect(oldPermissions.mintMode).to.be.false;
+      expect(oldPermissions.access).to.be.equal('Normal');
+
+      await collectionEvm.methods.setCollectionAccess(1 /*'AllowList'*/).send({from: owner});
+      await collectionEvm.methods.addToCollectionAllowListCross(userCross).send({from: owner});
+      await collectionEvm.methods.setCollectionMintMode(true).send({from: owner});
+
+      const newPermissions = (await collectionSub.getData())!.raw.permissions;
+      expect(newPermissions.mintMode).to.be.true;
+      expect(newPermissions.access).to.be.equal('AllowList');
+
+      const ownerBalanceBefore = await helper.balance.getSubstrate(helper.address.ethToSubstrate(owner));
+      const sponsorBalanceBefore = await helper.balance.getSubstrate(helper.address.ethToSubstrate(sponsorEth));
+      const userBalanceBefore =  await helper.balance.getSubstrate(helper.address.ethToSubstrate(user));
+
+      // User can mint token without balance:
+      {
+        const result = await collectionEvm.methods.mintWithTokenURI(user, 'Test URI').send({from: user});
+        const events = helper.eth.normalizeEvents(result.events);
+
+        expect(events).to.deep.include({
+          address: collectionAddress,
+          event: 'Transfer',
+          args: {
+            from: '0x0000000000000000000000000000000000000000',
+            to: user,
+            tokenId: '1',
+          },
+        });
+
+        const ownerBalanceAfter = await helper.balance.getSubstrate(helper.address.ethToSubstrate(owner));
+        const sponsorBalanceAfter = await helper.balance.getSubstrate(helper.address.ethToSubstrate(sponsorEth));
+        const userBalanceAfter =  await helper.balance.getSubstrate(helper.address.ethToSubstrate(user));
+
+        expect(await collectionEvm.methods.tokenURI(nextTokenId).call()).to.be.equal('Test URI');
+        expect(ownerBalanceBefore).to.be.eq(ownerBalanceAfter);
+        expect(userBalanceAfter).to.be.eq(userBalanceBefore);
+        expect(sponsorBalanceBefore > sponsorBalanceAfter).to.be.true;
+      }
+    }));
+
+  [
+    'setCollectionSponsorCross',
+    'setCollectionSponsor', // Soft-deprecated
+  ].map(testCase =>
+    itEth(`[${testCase}] Check that collection admin EVM transaction spend money from sponsor eth address`, async ({helper}) => {
+      const owner = await helper.eth.createAccountWithBalance(donor);
+      const sponsor = await helper.eth.createAccountWithBalance(donor);
+      const sponsorCross = helper.ethCrossAccount.fromAddress(sponsor);
+
+      const {collectionAddress, collectionId} = await helper.eth.createERC721MetadataCompatibleRFTCollection(owner,'Sponsor collection', '1', '1', '');
+
+      const collectionSub = helper.rft.getCollectionObject(collectionId);
+      const collectionEvm = await helper.ethNativeContract.collection(collectionAddress, 'rft', owner, testCase === 'setCollectionSponsor');
+      // Set collection sponsor:
+      expect(await collectionEvm.methods.hasCollectionPendingSponsor().call()).to.be.false;
+      await collectionEvm.methods[testCase](testCase === 'setCollectionSponsor' ? sponsor : sponsorCross).send();
+      expect(await collectionEvm.methods.hasCollectionPendingSponsor().call()).to.be.true;
+      let collectionData = (await collectionSub.getData())!;
+      expect(collectionData.raw.sponsorship.Unconfirmed).to.be.eq(helper.address.ethToSubstrate(sponsor, true));
+      await expect(collectionEvm.methods.confirmCollectionSponsorship().call()).to.be.rejectedWith('ConfirmSponsorshipFail');
+      expect(await collectionEvm.methods.hasCollectionPendingSponsor().call()).to.be.true;
+
+      await collectionEvm.methods.confirmCollectionSponsorship().send({from: sponsor});
+      collectionData = (await collectionSub.getData())!;
+      expect(collectionData.raw.sponsorship.Confirmed).to.be.eq(helper.address.ethToSubstrate(sponsor, true));
+      expect(await collectionEvm.methods.hasCollectionPendingSponsor().call()).to.be.false;
+      const sponsorStruct = await collectionEvm.methods.collectionSponsor().call({from: owner});
+      const sponsorSubAddress = helper.address.normalizeSubstrateToChainFormat(helper.address.ethToSubstrate(sponsor));
+      const actualSubAddress = helper.address.normalizeSubstrateToChainFormat(helper.address.restoreCrossAccountFromBigInt(BigInt(sponsorStruct.sub)));
+      expect(actualSubAddress).to.be.equal(sponsorSubAddress);
+
+      const user = helper.eth.createAccount();
+      const userCross = helper.ethCrossAccount.fromAddress(user);
+      await collectionEvm.methods.addCollectionAdminCross(userCross).send();
+
+      const ownerBalanceBefore = await helper.balance.getSubstrate(helper.address.ethToSubstrate(owner));
+      const sponsorBalanceBefore = await helper.balance.getSubstrate(helper.address.ethToSubstrate(sponsor));
+
+      const mintingResult = await collectionEvm.methods.mintWithTokenURI(user, 'Test URI').send({from: user});
+      const tokenId = mintingResult.events.Transfer.returnValues.tokenId;
+
+      const events = helper.eth.normalizeEvents(mintingResult.events);
+      const address = helper.ethAddress.fromCollectionId(collectionId);
+
+      expect(events).to.deep.include({
+        address,
+        event: 'Transfer',
+        args: {
+          from: '0x0000000000000000000000000000000000000000',
+          to: user,
+          tokenId: '1',
+        },
+      });
+      expect(await collectionEvm.methods.tokenURI(tokenId).call({from: user})).to.be.equal('Test URI');
+
+      const ownerBalanceAfter = await helper.balance.getSubstrate(helper.address.ethToSubstrate(owner));
+      expect(ownerBalanceAfter).to.be.eq(ownerBalanceBefore);
+      const sponsorBalanceAfter = await helper.balance.getSubstrate(helper.address.ethToSubstrate(sponsor));
+      expect(sponsorBalanceAfter < sponsorBalanceBefore).to.be.true;
+    }));
+
+  itEth('Check that collection admin EVM transaction spend money from sponsor sub address', async ({helper}) => {
+    const owner = await helper.eth.createAccountWithBalance(donor);
+    const sponsor = alice;
+    const sponsorCross = helper.ethCrossAccount.fromKeyringPair(sponsor);
+
+    const {collectionAddress, collectionId} = await helper.eth.createERC721MetadataCompatibleRFTCollection(owner,'Sponsor collection', '1', '1', '');
+
+    const collectionSub = helper.rft.getCollectionObject(collectionId);
+    const collectionEvm = await helper.ethNativeContract.collection(collectionAddress, 'rft', owner, false);
+    // Set collection sponsor:
+    expect(await collectionEvm.methods.hasCollectionPendingSponsor().call()).to.be.false;
+    await collectionEvm.methods.setCollectionSponsorCross(sponsorCross).send();
+    expect(await collectionEvm.methods.hasCollectionPendingSponsor().call()).to.be.true;
+    let collectionData = (await collectionSub.getData())!;
+    expect(collectionData.raw.sponsorship.Unconfirmed).to.be.eq(sponsor.address);
+    await expect(collectionEvm.methods.confirmCollectionSponsorship().call()).to.be.rejectedWith('ConfirmSponsorshipFail');
+
+    await collectionSub.confirmSponsorship(sponsor);
+    collectionData = (await collectionSub.getData())!;
+    expect(collectionData.raw.sponsorship.Confirmed).to.be.eq(sponsor.address);
+    expect(await collectionEvm.methods.hasCollectionPendingSponsor().call()).to.be.false;
+    const sponsorStruct = await collectionEvm.methods.collectionSponsor().call({from: owner});
+    expect(BigInt(sponsorStruct.sub)).to.be.equal(BigInt('0x' + Buffer.from(sponsor.addressRaw).toString('hex')));
+
+    const user = helper.eth.createAccount();
+    const userCross = helper.ethCrossAccount.fromAddress(user);
+    await collectionEvm.methods.addCollectionAdminCross(userCross).send();
+
+    const ownerBalanceBefore = await helper.balance.getSubstrate(helper.address.ethToSubstrate(owner));
+    const sponsorBalanceBefore = await helper.balance.getSubstrate(sponsor.address);
+
+    const mintingResult = await collectionEvm.methods.mintWithTokenURI(user, 'Test URI').send({from: user});
+    const tokenId = mintingResult.events.Transfer.returnValues.tokenId;
+
+    const events = helper.eth.normalizeEvents(mintingResult.events);
+
+    expect(events).to.deep.include({
+      address: collectionAddress,
+      event: 'Transfer',
+      args: {
+        from: '0x0000000000000000000000000000000000000000',
+        to: user,
+        tokenId: '1',
+      },
+    });
+    expect(await collectionEvm.methods.tokenURI(tokenId).call({from: user})).to.be.equal('Test URI');
+
+    const ownerBalanceAfter = await helper.balance.getSubstrate(helper.address.ethToSubstrate(owner));
+    expect(ownerBalanceAfter).to.be.eq(ownerBalanceBefore);
+    const sponsorBalanceAfter = await helper.balance.getSubstrate(sponsor.address);
+    expect(sponsorBalanceAfter < sponsorBalanceBefore).to.be.true;
+  });
+
+  itEth('Sponsoring collection from substrate address via access list', async ({helper}) => {
+    const owner = await helper.eth.createAccountWithBalance(donor);
+    const user = helper.eth.createAccount();
+    const userCross =  helper.ethCrossAccount.fromAddress(user);
+    const sponsor = alice;
+    const sponsorCross = helper.ethCrossAccount.fromKeyringPair(sponsor);
+
+    const {collectionAddress, collectionId} = await helper.eth.createERC721MetadataCompatibleRFTCollection(owner,'Sponsor collection', '1', '1', '');
+    const collectionEvm = await helper.ethNativeContract.collection(collectionAddress, 'rft', owner, false);
+
+    await collectionEvm.methods.setCollectionSponsorCross(sponsorCross).send({from: owner});
+
+    const collectionSub = helper.rft.getCollectionObject(collectionId);
+    await collectionSub.confirmSponsorship(sponsor);
+
+    const nextTokenId = await collectionEvm.methods.nextTokenId().call();
+    expect(nextTokenId).to.be.equal('1');
+
+    await collectionEvm.methods.setCollectionAccess(1 /*'AllowList'*/).send({from: owner});
+
+    await collectionEvm.methods.addToCollectionAllowListCross(userCross).send({from: owner});
+    await collectionEvm.methods.setCollectionMintMode(true).send({from: owner});
+
+    const ownerBalanceBefore = await helper.balance.getSubstrate(helper.address.ethToSubstrate(owner));
+    const sponsorBalanceBefore = await helper.balance.getSubstrate(sponsor.address);
+    const userBalanceBefore =  await helper.balance.getSubstrate(helper.address.ethToSubstrate(user));
+
+    {
+      const nextTokenId = await collectionEvm.methods.nextTokenId().call();
+      expect(nextTokenId).to.be.equal('1');
+      const mintingResult = await collectionEvm.methods.mintWithTokenURI(
+        user,
+        'Test URI',
+      ).send({from: user});
+
+      const events = helper.eth.normalizeEvents(mintingResult.events);
+
+
+      expect(events).to.deep.include({
+        address: collectionAddress,
+        event: 'Transfer',
+        args: {
+          from: '0x0000000000000000000000000000000000000000',
+          to: user,
+          tokenId: nextTokenId,
+        },
+      });
+
+      const ownerBalanceAfter = await helper.balance.getSubstrate(helper.address.ethToSubstrate(owner));
+      const sponsorBalanceAfter = await helper.balance.getSubstrate(sponsor.address);
+      const userBalanceAfter =  await helper.balance.getSubstrate(helper.address.ethToSubstrate(user));
+
+      expect(await collectionEvm.methods.tokenURI(nextTokenId).call()).to.be.equal('Test URI');
+      expect(ownerBalanceBefore).to.be.eq(ownerBalanceAfter);
+      expect(userBalanceAfter).to.be.eq(userBalanceBefore);
+      expect(sponsorBalanceBefore > sponsorBalanceAfter).to.be.true;
+    }
+  });
+
+  itEth('Can reassign collection sponsor', async ({helper}) => {
+    const owner = await helper.eth.createAccountWithBalance(donor);
+    const sponsorEth = await helper.eth.createAccountWithBalance(donor);
+    const sponsorCrossEth = helper.ethCrossAccount.fromAddress(sponsorEth);
+    const [sponsorSub] = await helper.arrange.createAccounts([100n], donor);
+    const sponsorCrossSub = helper.ethCrossAccount.fromKeyringPair(sponsorSub);
+
+    const {collectionAddress, collectionId} = await helper.eth.createERC721MetadataCompatibleRFTCollection(owner,'Sponsor collection', '1', '1', '');
+    const collectionSub = helper.rft.getCollectionObject(collectionId);
+    const collectionEvm = await helper.ethNativeContract.collection(collectionAddress, 'rft', owner);
+
+    // Set and confirm sponsor:
+    await collectionEvm.methods.setCollectionSponsorCross(sponsorCrossEth).send({from: owner});
+    await collectionEvm.methods.confirmCollectionSponsorship().send({from: sponsorEth});
+
+    // Can reassign sponsor:
+    await collectionEvm.methods.setCollectionSponsorCross(sponsorCrossSub).send({from: owner});
+    const collectionSponsor = (await collectionSub.getData())?.raw.sponsorship;
+    expect(collectionSponsor).to.deep.eq({Unconfirmed: sponsorSub.address});
+  });
+
+  [
+    'transfer',
+    'transferCross',
+    'transferFrom',
+    'transferFromCross',
+  ].map(testCase =>
+    itEth(`[${testCase}] Check that transfer via EVM spend money from sponsor address`, async ({helper}) => {
+      const owner = await helper.eth.createAccountWithBalance(donor);
+
+      const {collectionAddress} = await helper.eth.createERC721MetadataCompatibleRFTCollection(owner,'Sponsor collection', '1', '1', '');
+      const sponsor = await helper.eth.createAccountWithBalance(donor);
+      const sponsorCross = helper.ethCrossAccount.fromAddress(sponsor);
+      const receiver = await helper.eth.createAccountWithBalance(donor);
+      const collectionEvm = await helper.ethNativeContract.collection(collectionAddress, 'rft', owner);
+
+      await collectionEvm.methods.setCollectionSponsorCross(sponsorCross).send();
+      await collectionEvm.methods.confirmCollectionSponsorship().send({from: sponsor});
+
+      const user = await helper.eth.createAccountWithBalance(donor);
+      const userCross = helper.ethCrossAccount.fromAddress(user);
+      await collectionEvm.methods.addCollectionAdminCross(userCross).send();
+
+      const result = await collectionEvm.methods.mintWithTokenURI(user, 'Test URI').send({from: user});
+      const tokenId = result.events.Transfer.returnValues.tokenId;
+
+      const ownerBalanceBefore = await helper.balance.getSubstrate(helper.address.ethToSubstrate(owner));
+      const sponsorBalanceBefore = await helper.balance.getSubstrate(helper.address.ethToSubstrate(sponsor));
+      const userBalanceBefore = await helper.balance.getSubstrate(helper.address.ethToSubstrate(user));
+
+      switch (testCase) {
+        case 'transfer':
+          await collectionEvm.methods.transfer(receiver, tokenId).send({from: user});
+          break;
+        case 'transferCross':
+          await collectionEvm.methods.transferCross(helper.ethCrossAccount.fromAddress(receiver), tokenId).send({from: user});
+          break;
+        case 'transferFrom':
+          await collectionEvm.methods.transferFrom(user, receiver, tokenId).send({from: user});
+          break;
+        case 'transferFromCross':
+          await collectionEvm.methods.transferFromCross(helper.ethCrossAccount.fromAddress(user), helper.ethCrossAccount.fromAddress(receiver), tokenId).send({from: user});
+          break;
+      }
+
+      const ownerBalanceAfter = await helper.balance.getSubstrate(helper.address.ethToSubstrate(owner));
+      expect(ownerBalanceAfter).to.be.eq(ownerBalanceBefore);
+      const sponsorBalanceAfter = await helper.balance.getSubstrate(helper.address.ethToSubstrate(sponsor));
+      expect(sponsorBalanceAfter < sponsorBalanceBefore).to.be.true;
+      const userBalanceAfter = await helper.balance.getSubstrate(helper.address.ethToSubstrate(user));
+      expect(userBalanceAfter).to.be.eq(userBalanceBefore);
+    }));
+});
+
+describe('evm RFT token sponsoring', () => {
+  let donor: IKeyringPair;
+
+  before(async function() {
+    await usingPlaygrounds(async (helper, privateKey) => {
+      requirePalletsOrSkip(this, helper, [Pallets.ReFungible]);
+      donor = await privateKey({filename: __filename});
+    });
+  });
+
+  [
+    'transfer',
+    'transferCross',
+    'transferFrom',
+    'transferFromCross',
+  ].map(testCase =>
+    itEth(`[${testCase}] Check that token piece transfer via EVM spend money from sponsor address`, async ({helper}) => {
+      const owner = await helper.eth.createAccountWithBalance(donor);
+
+      const {collectionAddress, collectionId} = await helper.eth.createERC721MetadataCompatibleRFTCollection(owner,'Sponsor collection', '1', '1', '');
+      const sponsor = await helper.eth.createAccountWithBalance(donor);
+      const sponsorCross = helper.ethCrossAccount.fromAddress(sponsor);
+      const receiver = await helper.eth.createAccountWithBalance(donor);
+      const collectionEvm = await helper.ethNativeContract.collection(collectionAddress, 'rft', owner);
+
+      await collectionEvm.methods.setCollectionSponsorCross(sponsorCross).send();
+      await collectionEvm.methods.confirmCollectionSponsorship().send({from: sponsor});
+
+      const user = await helper.eth.createAccountWithBalance(donor);
+      const userCross = helper.ethCrossAccount.fromAddress(user);
+      await collectionEvm.methods.addCollectionAdminCross(userCross).send();
+
+      const result = await collectionEvm.methods.mintWithTokenURI(user, 'Test URI').send({from: user});
+      const tokenId = result.events.Transfer.returnValues.tokenId;
+
+      const tokenContract = await helper.ethNativeContract.rftTokenById(collectionId, tokenId, user);
+      await tokenContract.methods.repartition(2).send();
+
+      const ownerBalanceBefore = await helper.balance.getSubstrate(helper.address.ethToSubstrate(owner));
+      const sponsorBalanceBefore = await helper.balance.getSubstrate(helper.address.ethToSubstrate(sponsor));
+      const userBalanceBefore = await helper.balance.getSubstrate(helper.address.ethToSubstrate(user));
+
+      switch (testCase) {
+        case 'transfer':
+          await tokenContract.methods.transfer(receiver, 1).send();
+          break;
+        case 'transferCross':
+          await tokenContract.methods.transferCross(helper.ethCrossAccount.fromAddress(receiver), 1).send();
+          break;
+        case 'transferFrom':
+          await tokenContract.methods.transferFrom(user, receiver, 1).send();
+          break;
+        case 'transferFromCross':
+          await tokenContract.methods.transferFromCross(helper.ethCrossAccount.fromAddress(user), helper.ethCrossAccount.fromAddress(receiver), 1).send();
+          break;
+      }
+
+      const ownerBalanceAfter = await helper.balance.getSubstrate(helper.address.ethToSubstrate(owner));
+      expect(ownerBalanceAfter).to.be.eq(ownerBalanceBefore);
+      const sponsorBalanceAfter = await helper.balance.getSubstrate(helper.address.ethToSubstrate(sponsor));
+      expect(sponsorBalanceAfter < sponsorBalanceBefore).to.be.true;
+      const userBalanceAfter = await helper.balance.getSubstrate(helper.address.ethToSubstrate(user));
+      expect(userBalanceAfter).to.be.eq(userBalanceBefore);
+    }));
+
+  [
+    'approve',
+    'approveCross',
+  ].map(testCase =>
+    itEth(`[${testCase}] Check that approve via EVM spend money from sponsor address`, async ({helper}) => {
+      const owner = await helper.eth.createAccountWithBalance(donor);
+
+      const {collectionAddress, collectionId} = await helper.eth.createERC721MetadataCompatibleRFTCollection(owner,'Sponsor collection', '1', '1', '');
+      const sponsor = await helper.eth.createAccountWithBalance(donor);
+      const sponsorCross = helper.ethCrossAccount.fromAddress(sponsor);
+      const receiver = await helper.eth.createAccountWithBalance(donor);
+      const collectionEvm = await helper.ethNativeContract.collection(collectionAddress, 'rft', owner);
+
+      await collectionEvm.methods.setCollectionSponsorCross(sponsorCross).send();
+      await collectionEvm.methods.confirmCollectionSponsorship().send({from: sponsor});
+
+      const user = await helper.eth.createAccountWithBalance(donor);
+      const userCross = helper.ethCrossAccount.fromAddress(user);
+      await collectionEvm.methods.addCollectionAdminCross(userCross).send();
+
+      const result = await collectionEvm.methods.mintWithTokenURI(user, 'Test URI').send({from: user});
+      const tokenId = result.events.Transfer.returnValues.tokenId;
+
+      const tokenContract = await helper.ethNativeContract.rftTokenById(collectionId, tokenId, user);
+      await tokenContract.methods.repartition(2).send();
+
+      const ownerBalanceBefore = await helper.balance.getSubstrate(helper.address.ethToSubstrate(owner));
+      const sponsorBalanceBefore = await helper.balance.getSubstrate(helper.address.ethToSubstrate(sponsor));
+      const userBalanceBefore = await helper.balance.getSubstrate(helper.address.ethToSubstrate(user));
+
+      switch (testCase) {
+        case 'approve':
+          await tokenContract.methods.approve(receiver, 1).send();
+          break;
+        case 'approveCross':
+          await tokenContract.methods.approveCross(helper.ethCrossAccount.fromAddress(receiver), 1).send();
+          break;
+      }
+
+      const ownerBalanceAfter = await helper.balance.getSubstrate(helper.address.ethToSubstrate(owner));
+      expect(ownerBalanceAfter).to.be.eq(ownerBalanceBefore);
+      const sponsorBalanceAfter = await helper.balance.getSubstrate(helper.address.ethToSubstrate(sponsor));
+      expect(sponsorBalanceAfter < sponsorBalanceBefore).to.be.true;
+      const userBalanceAfter = await helper.balance.getSubstrate(helper.address.ethToSubstrate(user));
+      expect(userBalanceAfter).to.be.eq(userBalanceBefore);
+    }));
+});
+

--- a/tests/src/eth/createFTCollection.test.ts
+++ b/tests/src/eth/createFTCollection.test.ts
@@ -32,6 +32,7 @@
     });
   });
 
+  // TODO move sponsorship tests to another file:
   // Soft-deprecated
   itEth('[eth] Set sponsorship', async ({helper}) => {
     const owner = await helper.eth.createAccountWithBalance(donor);
@@ -93,6 +94,11 @@
     expect(await collectionHelpers
       .methods.isCollectionExist(collectionAddress).call())
       .to.be.true;
+
+    // check collectionOwner:
+    const collectionEvm = await helper.ethNativeContract.collection(collectionAddress, 'ft', owner, true);
+    const collectionOwner = await collectionEvm.methods.collectionOwner().call();
+    expect(helper.address.restoreCrossAccountFromBigInt(BigInt(collectionOwner.sub))).to.eq(helper.address.ethToSubstrate(owner, true));
   });
 
   itEth('destroyCollection', async ({helper}) => {

--- a/tests/src/eth/createNFTCollection.test.ts
+++ b/tests/src/eth/createNFTCollection.test.ts
@@ -134,6 +134,11 @@
     expect(await collectionHelpers
       .methods.isCollectionExist(collectionAddress).call())
       .to.be.true;
+
+    // check collectionOwner:
+    const collectionEvm = await helper.ethNativeContract.collection(collectionAddress, 'ft', owner, true);
+    const collectionOwner = await collectionEvm.methods.collectionOwner().call();
+    expect(helper.address.restoreCrossAccountFromBigInt(BigInt(collectionOwner.sub))).to.eq(helper.address.ethToSubstrate(owner, true));
   });
 });
 

--- a/tests/src/eth/createRFTCollection.test.ts
+++ b/tests/src/eth/createRFTCollection.test.ts
@@ -88,27 +88,6 @@
     ]);
   });
 
-  // this test will occasionally fail when in async environment.
-  itEth.skip('Check collection address exist', async ({helper}) => {
-    const owner = await helper.eth.createAccountWithBalance(donor);
-
-    const expectedCollectionId = +(await helper.callRpc('api.rpc.unique.collectionStats')).created + 1;
-    const expectedCollectionAddress = helper.ethAddress.fromCollectionId(expectedCollectionId);
-    const collectionHelpers = await helper.ethNativeContract.collectionHelpers(owner);
-
-    expect(await collectionHelpers.methods
-      .isCollectionExist(expectedCollectionAddress)
-      .call()).to.be.false;
-
-    await collectionHelpers.methods
-      .createRFTCollection('A', 'A', 'A')
-      .send({value: Number(2n * helper.balance.getOneTokenNominal())});
-
-    expect(await collectionHelpers.methods
-      .isCollectionExist(expectedCollectionAddress)
-      .call()).to.be.true;
-  });
-
   // Soft-deprecated
   itEth('[eth] Set sponsorship', async ({helper}) => {
     const owner = await helper.eth.createAccountWithBalance(donor);
@@ -166,6 +145,11 @@
     expect(await collectionHelpers
       .methods.isCollectionExist(collectionAddress).call())
       .to.be.true;
+
+    // check collectionOwner:
+    const collectionEvm = await helper.ethNativeContract.collection(collectionAddress, 'ft', owner, true);
+    const collectionOwner = await collectionEvm.methods.collectionOwner().call();
+    expect(helper.address.restoreCrossAccountFromBigInt(BigInt(collectionOwner.sub))).to.eq(helper.address.ethToSubstrate(owner, true));
   });
 });
 

--- a/tests/src/eth/evmCoder.test.ts
+++ b/tests/src/eth/evmCoder.test.ts
@@ -62,7 +62,7 @@
       donor = await privateKey({filename: __filename});
     });
   });
-  
+
   itEth('Call non-existing function', async ({helper}) => {
     const owner = await helper.eth.createAccountWithBalance(donor);
     const collection = await helper.eth.createNFTCollection(owner, 'EVMCODER', '', 'TEST');

--- a/tests/src/eth/nonFungible.test.ts
+++ b/tests/src/eth/nonFungible.test.ts
@@ -167,7 +167,6 @@
     expect(event.returnValues.to).to.be.equal(receiver);
 
     expect(await contract.methods.tokenURI(tokenId).call()).to.be.equal('Test URI');
-    console.log(await contract.methods.crossOwnerOf(tokenId).call());
     expect(await contract.methods.crossOwnerOf(tokenId).call()).to.be.like([receiver, '0']);
     // TODO: this wont work right now, need release 919000 first
     // await helper.methods.setOffchainSchema(collectionIdAddress, 'https://offchain-service.local/token-info/{id}').send();
@@ -200,7 +199,6 @@
             },
           };
         });
-
 
       const collection = await helper.nft.mintCollection(minter, {
         tokenPrefix: 'ethp',

--- a/tests/src/eth/proxyContract.test.ts
+++ b/tests/src/eth/proxyContract.test.ts
@@ -31,11 +31,11 @@
     const deployer = await helper.eth.createAccountWithBalance(donor);
     const caller = await helper.eth.createAccountWithBalance(donor);
     const proxyContract = await deployProxyContract(helper, deployer);
-    
+
     const realContractV1 = await deployRealContractV1(helper, deployer);
     const realContractV1proxy = new helper.web3!.eth.Contract(realContractV1.options.jsonInterface, proxyContract.options.address, {from: caller, gas: helper.eth.DEFAULT_GAS});
     await proxyContract.methods.updateVersion(realContractV1.options.address).send();
-    
+
     await realContractV1proxy.methods.flip().send();
     await realContractV1proxy.methods.flip().send();
     await realContractV1proxy.methods.flip().send();

--- a/tests/src/eth/scheduling.test.ts
+++ b/tests/src/eth/scheduling.test.ts
@@ -53,7 +53,7 @@
       );
 
     expect(await flipper.methods.getValue().call()).to.be.equal(initialValue);
-    
+
     await helper.wait.newBlocks(waitForBlocks + 1);
     expect(await flipper.methods.getValue().call()).to.be.not.equal(initialValue);
 

--- a/tests/src/eth/util/index.ts
+++ b/tests/src/eth/util/index.ts
@@ -58,9 +58,9 @@
     silentConsole.disable();
   }
 };
-  
+
 export function itEth(name: string, cb: (apis: { helper: EthUniqueHelper, privateKey: (seed: string | {filename: string}) => Promise<IKeyringPair> }) => any, opts: { only?: boolean, skip?: boolean, requiredPallets?: string[] } = {}) {
-  (opts.only ? it.only : 
+  (opts.only ? it.only :
     opts.skip ? it.skip : it)(name, async function() {
     await usingEthPlaygrounds(async (helper, privateKey) => {
       if (opts.requiredPallets) {

--- a/tests/src/fungible.test.ts
+++ b/tests/src/fungible.test.ts
@@ -43,7 +43,7 @@
     expect(itemCountAfter).to.be.equal(defaultTokenId);
     expect(aliceBalance).to.be.equal(U128_MAX);
   });
-  
+
   itSub('RPC method tokenOnewrs for fungible collection and token', async ({helper}) => {
     const ethAcc = {Ethereum: '0x67fb3503a61b284dc83fa96dceec4192db47dc7c'};
     const facelessCrowd = (await helper.arrange.createAccounts(Array(7).fill(0n), donor)).map(keyring => {return {Substrate: keyring.address};});
@@ -54,22 +54,22 @@
 
     await collection.transfer(alice, {Substrate: bob.address}, 1000n);
     await collection.transfer(alice, ethAcc, 900n);
-    
+
     for (let i = 0; i < 7; i++) {
       await collection.transfer(alice, facelessCrowd[i], 1n);
-    } 
+    }
 
     const owners = await collection.getTop10Owners();
 
     // What to expect
     expect(owners).to.deep.include.members([{Substrate: alice.address}, ethAcc, {Substrate: bob.address}, ...facelessCrowd]);
     expect(owners.length).to.be.equal(10);
-    
+
     const [eleven] = await helper.arrange.createAccounts([0n], donor);
     expect(await collection.transfer(alice, {Substrate: eleven.address}, 10n)).to.be.true;
     expect((await collection.getTop10Owners()).length).to.be.equal(10);
   });
-  
+
   itSub('Transfer token', async ({helper}) => {
     const ethAcc = {Ethereum: '0x67fb3503a61b284dc83fa96dceec4192db47dc7c'};
     const collection = await helper.ft.mintCollection(alice, {name: 'test', description: 'test', tokenPrefix: 'test'});
@@ -108,7 +108,7 @@
     expect(await collection.doesTokenExist(0)).to.be.true;
     expect(await collection.getBalance({Substrate: alice.address})).to.be.equal(1n);
   });
-  
+
   itSub('Burn all tokens ', async ({helper}) => {
     const collection = await helper.ft.mintCollection(alice, {name: 'test', description: 'test', tokenPrefix: 'test'});
     await collection.mint(alice, 500n);
@@ -127,7 +127,7 @@
     await collection.mint(alice, 100n);
 
     expect(await collection.getBalance({Substrate: alice.address})).to.be.equal(100n);
-    
+
     expect(await collection.approveTokens(alice, {Substrate: bob.address}, 60n)).to.be.true;
     expect(await collection.getApprovedTokens({Substrate: alice.address}, {Substrate: bob.address})).to.be.equal(60n);
     expect(await collection.getBalance({Substrate: bob.address})).to.be.equal(0n);
@@ -169,11 +169,11 @@
     // 1. Alice cannot transfer more than 0 tokens if balance low:
     await expect(collection.transfer(alice, {Substrate: charlie.address}, 1n)).to.be.rejectedWith('common.TokenValueTooLow');
     await expect(collection.transfer(alice, {Substrate: charlie.address}, 100n)).to.be.rejectedWith('common.TokenValueTooLow');
-    
+
     // 2. Alice cannot transfer non-existing token:
     await expect(nonExistingCollection.transfer(alice, {Substrate: charlie.address}, 0n)).to.be.rejectedWith('common.CollectionNotFound');
     await expect(nonExistingCollection.transfer(alice, {Substrate: charlie.address}, 1n)).to.be.rejectedWith('common.CollectionNotFound');
-    
+
     // 3. Zero transfer allowed (EIP-20):
     await collection.transfer(bob, {Substrate: charlie.address}, 0n);
     // 3.1 even if the balance = 0

--- a/tests/src/inflation.seqtest.ts
+++ b/tests/src/inflation.seqtest.ts
@@ -26,7 +26,7 @@
       superuser = await privateKey('//Alice');
     });
   });
-  
+
   itSub('First year inflation is 10%', async ({helper}) => {
     // Make sure non-sudo can't start inflation
     const [bob] = await helper.arrange.createAccounts([10n], superuser);

--- a/tests/src/interfaces/unique/definitions.ts
+++ b/tests/src/interfaces/unique/definitions.ts
@@ -38,39 +38,39 @@
   types: {},
   rpc: {
     accountTokens: fun(
-      'Get tokens owned by an account in a collection', 
-      [collectionParam, crossAccountParam()], 
+      'Get tokens owned by an account in a collection',
+      [collectionParam, crossAccountParam()],
       'Vec<u32>',
     ),
     collectionTokens: fun(
-      'Get tokens contained within a collection', 
-      [collectionParam], 
+      'Get tokens contained within a collection',
+      [collectionParam],
       'Vec<u32>',
     ),
     tokenExists: fun(
-      'Check if the token exists', 
-      [collectionParam, tokenParam], 
+      'Check if the token exists',
+      [collectionParam, tokenParam],
       'bool',
     ),
 
     tokenOwner: fun(
-      'Get the token owner', 
-      [collectionParam, tokenParam], 
+      'Get the token owner',
+      [collectionParam, tokenParam],
       `Option<${CROSS_ACCOUNT_ID_TYPE}>`,
     ),
     topmostTokenOwner: fun(
-      'Get the topmost token owner in the hierarchy of a possibly nested token', 
-      [collectionParam, tokenParam], 
+      'Get the topmost token owner in the hierarchy of a possibly nested token',
+      [collectionParam, tokenParam],
       `Option<${CROSS_ACCOUNT_ID_TYPE}>`,
     ),
     tokenOwners: fun(
-      'Returns 10 tokens owners in no particular order', 
-      [collectionParam, tokenParam], 
+      'Returns 10 tokens owners in no particular order',
+      [collectionParam, tokenParam],
       `Vec<${CROSS_ACCOUNT_ID_TYPE}>`,
     ),
     tokenChildren: fun(
-      'Get tokens nested directly into the token', 
-      [collectionParam, tokenParam], 
+      'Get tokens nested directly into the token',
+      [collectionParam, tokenParam],
       'Vec<UpDataStructsTokenChild>',
     ),
 
@@ -91,13 +91,13 @@
     ),
 
     constMetadata: fun(
-      'Get token constant metadata', 
-      [collectionParam, tokenParam], 
+      'Get token constant metadata',
+      [collectionParam, tokenParam],
       'Vec<u8>',
     ),
     variableMetadata: fun(
-      'Get token variable metadata', 
-      [collectionParam, tokenParam], 
+      'Get token variable metadata',
+      [collectionParam, tokenParam],
       'Vec<u8>',
     ),
 
@@ -107,77 +107,77 @@
       'UpDataStructsTokenData',
     ),
     totalSupply: fun(
-      'Get the amount of distinctive tokens present in a collection', 
-      [collectionParam], 
+      'Get the amount of distinctive tokens present in a collection',
+      [collectionParam],
       'u32',
     ),
 
     accountBalance: fun(
-      'Get the amount of any user tokens owned by an account', 
-      [collectionParam, crossAccountParam()], 
+      'Get the amount of any user tokens owned by an account',
+      [collectionParam, crossAccountParam()],
       'u32',
     ),
     balance: fun(
-      'Get the amount of a specific token owned by an account', 
-      [collectionParam, crossAccountParam(), tokenParam], 
+      'Get the amount of a specific token owned by an account',
+      [collectionParam, crossAccountParam(), tokenParam],
       'u128',
     ),
     allowance: fun(
-      'Get the amount of currently possible sponsored transactions on a token for the fee to be taken off a sponsor', 
-      [collectionParam, crossAccountParam('sender'), crossAccountParam('spender'), tokenParam], 
+      'Get the amount of currently possible sponsored transactions on a token for the fee to be taken off a sponsor',
+      [collectionParam, crossAccountParam('sender'), crossAccountParam('spender'), tokenParam],
       'u128',
     ),
 
     adminlist: fun(
-      'Get the list of admin accounts of a collection', 
-      [collectionParam], 
+      'Get the list of admin accounts of a collection',
+      [collectionParam],
       'Vec<PalletEvmAccountBasicCrossAccountIdRepr>',
     ),
     allowlist: fun(
-      'Get the list of accounts allowed to operate within a collection', 
-      [collectionParam], 
+      'Get the list of accounts allowed to operate within a collection',
+      [collectionParam],
       'Vec<PalletEvmAccountBasicCrossAccountIdRepr>',
     ),
     allowed: fun(
-      'Check if a user is allowed to operate within a collection', 
-      [collectionParam, crossAccountParam()], 
+      'Check if a user is allowed to operate within a collection',
+      [collectionParam, crossAccountParam()],
       'bool',
     ),
 
     lastTokenId: fun(
-      'Get the last token ID created in a collection', 
-      [collectionParam], 
+      'Get the last token ID created in a collection',
+      [collectionParam],
       'u32',
     ),
     collectionById: fun(
-      'Get a collection by the specified ID', 
-      [collectionParam], 
+      'Get a collection by the specified ID',
+      [collectionParam],
       'Option<UpDataStructsRpcCollection>',
     ),
     collectionStats: fun(
-      'Get chain stats about collections', 
-      [], 
+      'Get chain stats about collections',
+      [],
       'UpDataStructsCollectionStats',
     ),
 
     nextSponsored: fun(
-      'Get the number of blocks until sponsoring a transaction is available', 
-      [collectionParam, crossAccountParam(), tokenParam], 
+      'Get the number of blocks until sponsoring a transaction is available',
+      [collectionParam, crossAccountParam(), tokenParam],
       'Option<u64>',
     ),
     effectiveCollectionLimits: fun(
-      'Get effective collection limits', 
-      [collectionParam], 
+      'Get effective collection limits',
+      [collectionParam],
       'Option<UpDataStructsCollectionLimits>',
     ),
     totalPieces: fun(
-      'Get the total amount of pieces of an RFT', 
-      [collectionParam, tokenParam], 
+      'Get the total amount of pieces of an RFT',
+      [collectionParam, tokenParam],
       'Option<u128>',
     ),
     allowanceForAll: fun(
-      'Tells whether the given `owner` approves the `operator`.', 
-      [collectionParam, crossAccountParam('owner'), crossAccountParam('operator')], 
+      'Tells whether the given `owner` approves the `operator`.',
+      [collectionParam, crossAccountParam('owner'), crossAccountParam('operator')],
       'Option<bool>',
     ),
   },

--- a/tests/src/limits.test.ts
+++ b/tests/src/limits.test.ts
@@ -30,7 +30,7 @@
   itSub.skip('Collection limits allow greater number than chain limits, chain limits are enforced', async ({helper}) => {
     const collection = await helper.nft.mintCollection(alice, {});
     await collection.setLimits(alice, {accountTokenOwnershipLimit: 20});
-    
+
     for(let i = 0; i < 10; i++){
       await expect(collection.mintToken(alice)).to.be.not.rejected;
     }
@@ -40,14 +40,14 @@
     }
     await collection.burn(alice);
   });
-  
+
   itSub('Collection limits allow lower number than chain limits, collection limits are enforced', async ({helper}) => {
     const collection = await helper.nft.mintCollection(alice, {});
     await collection.setLimits(alice, {accountTokenOwnershipLimit: 1});
 
     await collection.mintToken(alice);
     await expect(collection.mintToken(alice)).to.be.rejectedWith(/common\.AccountTokenLimitExceeded/);
-    
+
     await collection.burnToken(alice, 1);
     await expect(collection.burn(alice)).to.be.not.rejected;
   });
@@ -68,7 +68,7 @@
   itSub.skip('Collection limits allow greater number than chain limits, chain limits are enforced', async ({helper}) => {
     const collection = await helper.rft.mintCollection(alice, {});
     await collection.setLimits(alice, {accountTokenOwnershipLimit: 20});
-    
+
     for(let i = 0; i < 10; i++){
       await expect(collection.mintToken(alice, 10n)).to.be.not.rejected;
     }
@@ -85,7 +85,7 @@
 
     await collection.mintToken(alice);
     await expect(collection.mintToken(alice)).to.be.rejectedWith(/common\.AccountTokenLimitExceeded/);
-    
+
     await collection.burnToken(alice, 1);
     await expect(collection.burn(alice)).to.be.not.rejected;
   });
@@ -314,7 +314,7 @@
 
     await collection.setSponsor(alice, alice.address);
     await collection.confirmSponsorship(alice);
-    
+
     await token.transfer(alice, {Substrate: bob.address});
     const aliceBalanceBefore = await helper.balance.getSubstrate(alice.address);
 
@@ -345,7 +345,7 @@
 
     await collection.setSponsor(alice, alice.address);
     await collection.confirmSponsorship(alice);
-    
+
     await collection.transfer(alice, {Substrate: bob.address}, 2n);
     const aliceBalanceBefore = await helper.balance.getSubstrate(alice.address);
 
@@ -387,7 +387,7 @@
 
     await collection.setSponsor(alice, alice.address);
     await collection.confirmSponsorship(alice);
-    
+
     await token.transfer(alice, {Substrate: bob.address}, 2n);
     const aliceBalanceBefore = await helper.balance.getSubstrate(alice.address);
 
@@ -408,17 +408,17 @@
       [alice] = await helper.arrange.createAccounts([10n], donor);
     });
   });
-  
+
   itSub('Effective collection limits', async ({helper}) => {
     const collection = await helper.nft.mintCollection(alice, {});
-    await collection.setLimits(alice, {ownerCanTransfer: true});    
-    
-    { 
+    await collection.setLimits(alice, {ownerCanTransfer: true});
+
+    {
       // Check that limits are undefined
       const collectionInfo = await collection.getData();
       const limits = collectionInfo?.raw.limits;
       expect(limits).to.be.any;
-      
+
       expect(limits.accountTokenOwnershipLimit).to.be.null;
       expect(limits.sponsoredDataSize).to.be.null;
       expect(limits.sponsoredDataRateLimit).to.be.null;
@@ -449,7 +449,7 @@
       expect(limits.transfersEnabled).to.be.true;
     }
 
-    { 
+    {
       // Check the values for collection limits
       await collection.setLimits(alice, {
         accountTokenOwnershipLimit: 99_999,

--- a/tests/src/nesting/collectionProperties.seqtest.ts
+++ b/tests/src/nesting/collectionProperties.seqtest.ts
@@ -20,7 +20,7 @@
 describe('Integration Test: Collection Properties with sudo', () => {
   let superuser: IKeyringPair;
   let alice: IKeyringPair;
-  
+
   before(async () => {
     await usingPlaygrounds(async (helper, privateKey) => {
       superuser = await privateKey('//Alice');
@@ -32,7 +32,7 @@
   [
     {mode: 'nft' as const, requiredPallets: []},
     {mode: 'ft' as const, requiredPallets: []},
-    {mode: 'rft' as const, requiredPallets: [Pallets.ReFungible]}, 
+    {mode: 'rft' as const, requiredPallets: [Pallets.ReFungible]},
   ].map(testSuite => describe(`${testSuite.mode.toUpperCase()}`, () => {
     before(async function() {
       // eslint-disable-next-line require-await

--- a/tests/src/nesting/collectionProperties.test.ts
+++ b/tests/src/nesting/collectionProperties.test.ts
@@ -20,14 +20,14 @@
 describe('Integration Test: Collection Properties', () => {
   let alice: IKeyringPair;
   let bob: IKeyringPair;
-  
+
   before(async () => {
     await usingPlaygrounds(async (helper, privateKey) => {
       const donor = await privateKey({filename: __filename});
       [alice, bob] = await helper.arrange.createAccounts([200n, 10n], donor);
     });
   });
-  
+
   itSub('Properties are initially empty', async ({helper}) => {
     const collection = await helper.nft.mintCollection(alice);
     expect(await collection.getProperties()).to.be.empty;
@@ -36,7 +36,7 @@
   [
     {mode: 'nft' as const, requiredPallets: []},
     {mode: 'ft' as const, requiredPallets: []},
-    {mode: 'rft' as const, requiredPallets: [Pallets.ReFungible]}, 
+    {mode: 'rft' as const, requiredPallets: [Pallets.ReFungible]},
   ].map(testSuite => describe(`${testSuite.mode.toUpperCase()}`, () => {
     before(async function() {
       // eslint-disable-next-line require-await
@@ -50,37 +50,37 @@
 
       // As owner
       await expect(collection.setProperties(alice, [{key: 'electron', value: 'come bond'}])).to.be.fulfilled;
-    
+
       await collection.addAdmin(alice, {Substrate: bob.address});
-    
+
       // As administrator
       await expect(collection.setProperties(bob, [{key: 'black_hole'}])).to.be.fulfilled;
-    
+
       const properties = await collection.getProperties();
       expect(properties).to.include.deep.members([
         {key: 'electron', value: 'come bond'},
         {key: 'black_hole', value: ''},
       ]);
     });
-    
+
     itSub('Check valid names for collection properties keys', async ({helper}) =>  {
       const collection = await helper[testSuite.mode].mintCollection(alice);
 
       // alpha symbols
       await expect(collection.setProperties(alice, [{key: 'answer'}])).to.be.fulfilled;
-    
+
       // numeric symbols
       await expect(collection.setProperties(alice, [{key: '451'}])).to.be.fulfilled;
-    
+
       // underscore symbol
       await expect(collection.setProperties(alice, [{key: 'black_hole'}])).to.be.fulfilled;
-    
+
       // dash symbol
       await expect(collection.setProperties(alice, [{key: '-'}])).to.be.fulfilled;
-    
+
       // dot symbol
       await expect(collection.setProperties(alice, [{key: 'once.in.a.long.long.while...', value: 'you get a little lost'}])).to.be.fulfilled;
-    
+
       const properties = await collection.getProperties();
       expect(properties).to.include.deep.members([
         {key: 'answer', value: ''},
@@ -90,29 +90,29 @@
         {key: 'once.in.a.long.long.while...', value: 'you get a little lost'},
       ]);
     });
-  
+
     itSub('Changes properties of a collection', async ({helper}) =>  {
       const collection = await helper[testSuite.mode].mintCollection(alice);
 
       await expect(collection.setProperties(alice, [{key: 'electron', value: 'come bond'}, {key: 'black_hole', value: ''}])).to.be.fulfilled;
-    
+
       // Mutate the properties
       await expect(collection.setProperties(alice, [{key: 'black_hole', value: 'LIGO'}])).to.be.fulfilled;
-    
+
       const properties = await collection.getProperties();
       expect(properties).to.include.deep.members([
         {key: 'electron', value: 'come bond'},
         {key: 'black_hole', value: 'LIGO'},
       ]);
     });
-  
+
     itSub('Deletes properties of a collection', async ({helper}) =>  {
       const collection = await helper[testSuite.mode].mintCollection(alice);
 
       await expect(collection.setProperties(alice, [{key: 'electron', value: 'come bond'}, {key: 'black_hole', value: 'LIGO'}])).to.be.fulfilled;
-    
+
       await expect(collection.deleteProperties(alice, ['electron'])).to.be.fulfilled;
-    
+
       const properties = await collection.getProperties(['black_hole', 'electron']);
       expect(properties).to.be.deep.equal([
         {key: 'black_hole', value: 'LIGO'},
@@ -201,11 +201,11 @@
     });
   }));
 });
-  
+
 describe('Negative Integration Test: Collection Properties', () => {
   let alice: IKeyringPair;
   let bob: IKeyringPair;
-  
+
   before(async () => {
     await usingPlaygrounds(async (helper, privateKey) => {
       const donor = await privateKey({filename: __filename});
@@ -216,7 +216,7 @@
   [
     {mode: 'nft' as const, requiredPallets: []},
     {mode: 'ft' as const, requiredPallets: []},
-    {mode: 'rft' as const, requiredPallets: [Pallets.ReFungible]}, 
+    {mode: 'rft' as const, requiredPallets: [Pallets.ReFungible]},
   ].map(testSuite => describe(`${testSuite.mode.toUpperCase()}`, () => {
     before(async function() {
       // eslint-disable-next-line require-await
@@ -224,21 +224,21 @@
         requirePalletsOrSkip(this, helper, testSuite.requiredPallets);
       });
     });
-    
+
     itSub('Fails to set properties in a collection if not its onwer/administrator', async ({helper}) =>  {
       const collection = await helper[testSuite.mode].mintCollection(alice);
 
       await expect(collection.setProperties(bob, [{key: 'electron', value: 'come bond'}, {key: 'black_hole', value: 'LIGO'}]))
         .to.be.rejectedWith(/common\.NoPermission/);
-    
+
       expect(await collection.getProperties()).to.be.empty;
     });
-    
+
     itSub('Fails to set properties that exceed the limits', async ({helper}) =>  {
       const collection = await helper[testSuite.mode].mintCollection(alice);
 
       const spaceLimit = (await (collection.helper!.api! as any).query.common.collectionProperties(collection.collectionId)).spaceLimit.toNumber();
-      
+
       // Mute the general tx parsing error, too many bytes to process
       {
         console.error = () => {};
@@ -246,17 +246,17 @@
           {key: 'electron', value: 'low high '.repeat(Math.ceil(spaceLimit! / 9))},
         ])).to.be.rejected;
       }
-    
+
       expect(await collection.getProperties(['electron'])).to.be.empty;
-    
+
       await expect(collection.setProperties(alice, [
-        {key: 'electron', value: 'low high '.repeat(Math.ceil(spaceLimit! / 18))}, 
-        {key: 'black_hole', value: '0'.repeat(Math.ceil(spaceLimit! / 2))}, 
+        {key: 'electron', value: 'low high '.repeat(Math.ceil(spaceLimit! / 18))},
+        {key: 'black_hole', value: '0'.repeat(Math.ceil(spaceLimit! / 2))},
       ])).to.be.rejectedWith(/common\.NoSpaceForProperty/);
-    
+
       expect(await collection.getProperties(['electron', 'black_hole'])).to.be.empty;
     });
-    
+
     itSub('Fails to set more properties than it is allowed', async ({helper}) =>  {
       const collection = await helper[testSuite.mode].mintCollection(alice);
 
@@ -267,10 +267,10 @@
           value: Math.random() > 0.5 ? 'high' : 'low',
         });
       }
-    
+
       await expect(collection.setProperties(alice, propertiesToBeSet)).
         to.be.rejectedWith(/common\.PropertyLimitReached/);
-    
+
       expect(await collection.getProperties()).to.be.empty;
     });
 
@@ -282,34 +282,34 @@
         [{key: 'Mr/Sandman', value: 'Bring me a gene'}],
         [{key: 'déjà vu', value: 'hmm...'}],
       ];
-    
+
       for (let i = 0; i < invalidProperties.length; i++) {
         await expect(
-          collection.setProperties(alice, invalidProperties[i]), 
+          collection.setProperties(alice, invalidProperties[i]),
           `on rejecting the new badly-named property #${i}`,
         ).to.be.rejectedWith(/common\.InvalidCharacterInPropertyKey/);
       }
-    
+
       await expect(
-        collection.setProperties(alice, [{key: '', value: 'nothing must not exist'}]), 
+        collection.setProperties(alice, [{key: '', value: 'nothing must not exist'}]),
         'on rejecting an unnamed property',
       ).to.be.rejectedWith(/common\.EmptyPropertyKey/);
-    
+
       await expect(
-        collection.setProperties(alice, [{key: 'CRISPR-Cas9', value: 'rewriting nature!'}]), 
+        collection.setProperties(alice, [{key: 'CRISPR-Cas9', value: 'rewriting nature!'}]),
         'on setting the correctly-but-still-badly-named property',
       ).to.be.fulfilled;
-    
+
       const keys = invalidProperties.flatMap(propertySet => propertySet.map(property => property.key)).concat('CRISPR-Cas9').concat('');
-    
+
       const properties = await collection.getProperties(keys);
       expect(properties).to.be.deep.equal([
         {key: 'CRISPR-Cas9', value: 'rewriting nature!'},
       ]);
-    
+
       for (let i = 0; i < invalidProperties.length; i++) {
         await expect(
-          collection.deleteProperties(alice, invalidProperties[i].map(propertySet => propertySet.key)), 
+          collection.deleteProperties(alice, invalidProperties[i].map(propertySet => propertySet.key)),
           `on trying to delete the non-existent badly-named property #${i}`,
         ).to.be.rejectedWith(/common\.InvalidCharacterInPropertyKey/);
       }
@@ -326,4 +326,3 @@
     });
   }));
 });
-  
\ No newline at end of file

--- a/tests/src/nesting/graphs.test.ts
+++ b/tests/src/nesting/graphs.test.ts
@@ -56,7 +56,7 @@
     // to self
     await expect(
       tokens[0].nest(alice, tokens[0]),
-      'first transaction',  
+      'first transaction',
     ).to.be.rejectedWith(/structure\.OuroborosDetected/);
     // to nested part of graph
     await expect(

--- a/tests/src/nesting/nest.test.ts
+++ b/tests/src/nesting/nest.test.ts
@@ -36,7 +36,7 @@
     const nestedToken = await collection.mintToken(alice, targetToken.nestingAccount());
     expect(await nestedToken.getTopmostOwner()).to.be.deep.equal({Substrate: alice.address});
     expect(await nestedToken.getOwner()).to.be.deep.equal(targetToken.nestingAccount().toLowerCase());
-    
+
     // Create a token to be nested
     const newToken = await collection.mintToken(alice);
 
@@ -66,7 +66,7 @@
     // Create a nested token
     const tokenC = await collection.mintToken(alice, tokenA.nestingAccount());
     expect(await tokenC.getOwner()).to.be.deep.equal(tokenA.nestingAccount().toLowerCase());
-    
+
     // Transfer the nested token to another token
     await expect(tokenC.transferFrom(alice, tokenA.nestingAccount(), tokenB.nestingAccount())).to.be.fulfilled;
     expect(await tokenC.getTopmostOwner()).to.be.deep.equal({Substrate: alice.address});
@@ -76,7 +76,7 @@
   itSub('Checks token children', async ({helper}) => {
     const collectionA = await helper.nft.mintCollection(alice, {permissions: {nesting: {tokenOwner: true}}});
     const collectionB = await helper.ft.mintCollection(alice);
-    
+
     const targetToken = await collectionA.mintToken(alice);
     expect((await targetToken.getChildren()).length).to.be.equal(0, 'Children length check at creation');
 
@@ -108,7 +108,7 @@
       {tokenId: 0, collectionId: collectionB.collectionId},
     ], 'Children contents check at nesting #4 (from another collection)')
       .and.be.length(2, 'Children length check at nesting #4 (from another collection)');
-    
+
     // Move part of the fungible token inside token A deeper in the nesting tree
     await collectionB.transferFrom(alice, targetToken.nestingAccount(), tokenA.nestingAccount(), 1n);
     expect(await targetToken.getChildren()).to.be.have.deep.members([

--- a/tests/src/nesting/propertyPermissions.test.ts
+++ b/tests/src/nesting/propertyPermissions.test.ts
@@ -21,94 +21,94 @@
 describe('Integration Test: Access Rights to Token Properties', () => {
   let alice: IKeyringPair;
   let bob: IKeyringPair;
-  
+
   before(async () => {
     await usingPlaygrounds(async (helper, privateKey) => {
       const donor = await privateKey({filename: __filename});
       [alice, bob] = await helper.arrange.createAccounts([100n, 10n], donor);
     });
   });
-    
+
   itSub('Reads access rights to properties of a collection', async ({helper}) =>  {
     const collection = await helper.nft.mintCollection(alice);
     const propertyRights = (await helper.callRpc('api.query.common.collectionPropertyPermissions', [collection.collectionId])).toJSON();
     expect(propertyRights).to.be.empty;
   });
-    
-  async function testSetsAccessRightsToProperties(collection: UniqueNFTCollection | UniqueRFTCollection) {  
+
+  async function testSetsAccessRightsToProperties(collection: UniqueNFTCollection | UniqueRFTCollection) {
     await expect(collection.setTokenPropertyPermissions(alice, [{key: 'skullduggery', permission: {mutable: true}}]))
       .to.be.fulfilled;
-  
+
     await collection.addAdmin(alice, {Substrate: bob.address});
-  
+
     await expect(collection.setTokenPropertyPermissions(bob, [{key: 'mindgame', permission: {collectionAdmin: true, tokenOwner: false}}]))
       .to.be.fulfilled;
-  
+
     const propertyRights = await collection.getPropertyPermissions(['skullduggery', 'mindgame']);
     expect(propertyRights).to.include.deep.members([
       {key: 'skullduggery', permission: {mutable: true, collectionAdmin: false, tokenOwner: false}},
       {key: 'mindgame', permission: {mutable: false, collectionAdmin: true, tokenOwner: false}},
     ]);
   }
-  
+
   itSub('Sets access rights to properties of a collection (NFT)', async ({helper}) =>  {
     await testSetsAccessRightsToProperties(await helper.nft.mintCollection(alice));
   });
-  
+
   itSub.ifWithPallets('Sets access rights to properties of a collection (ReFungible)', [Pallets.ReFungible], async ({helper}) => {
     await testSetsAccessRightsToProperties(await helper.rft.mintCollection(alice));
   });
-    
+
   async function testChangesAccessRightsToProperty(collection: UniqueNFTCollection | UniqueRFTCollection) {
     await expect(collection.setTokenPropertyPermissions(alice, [{key: 'skullduggery', permission: {mutable: true, collectionAdmin: true}}]))
       .to.be.fulfilled;
-  
+
     await expect(collection.setTokenPropertyPermissions(alice, [{key: 'skullduggery', permission: {mutable: false, tokenOwner: true}}]))
       .to.be.fulfilled;
-  
+
     const propertyRights = await collection.getPropertyPermissions();
     expect(propertyRights).to.be.deep.equal([
       {key: 'skullduggery', permission: {'mutable': false, 'collectionAdmin': false, 'tokenOwner': true}},
     ]);
   }
-  
+
   itSub('Changes access rights to properties of a NFT collection', async ({helper}) =>  {
     await testChangesAccessRightsToProperty(await helper.nft.mintCollection(alice));
   });
-  
+
   itSub.ifWithPallets('Changes access rights to properties of a ReFungible collection', [Pallets.ReFungible], async ({helper}) => {
     await testChangesAccessRightsToProperty(await helper.rft.mintCollection(alice));
   });
 });
-  
+
 describe('Negative Integration Test: Access Rights to Token Properties', () => {
   let alice: IKeyringPair;
   let bob: IKeyringPair;
-  
+
   before(async () => {
     await usingPlaygrounds(async (helper, privateKey) => {
       const donor = await privateKey({filename: __filename});
       [alice, bob] = await helper.arrange.createAccounts([50n, 10n], donor);
     });
   });
-  
+
   async function testPreventsFromSettingAccessRightsNotAdminOrOwner(collection: UniqueNFTCollection | UniqueRFTCollection) {
     await expect(collection.setTokenPropertyPermissions(bob, [{key: 'skullduggery', permission: {mutable: true, tokenOwner: true}}]))
       .to.be.rejectedWith(/common\.NoPermission/);
-  
+
     const propertyRights = await collection.getPropertyPermissions(['skullduggery']);
     expect(propertyRights).to.be.empty;
   }
-  
+
   itSub('Prevents from setting access rights to properties of a NFT collection if not an onwer/admin', async ({helper}) =>  {
     await testPreventsFromSettingAccessRightsNotAdminOrOwner(await helper.nft.mintCollection(alice));
   });
-  
+
   itSub.ifWithPallets('Prevents from setting access rights to properties of a ReFungible collection if not an onwer/admin', [Pallets.ReFungible], async ({helper}) => {
     await testPreventsFromSettingAccessRightsNotAdminOrOwner(await helper.rft.mintCollection(alice));
   });
-  
-  async function testPreventFromAddingTooManyPossibleProperties(collection: UniqueNFTCollection | UniqueRFTCollection) {  
+
+  async function testPreventFromAddingTooManyPossibleProperties(collection: UniqueNFTCollection | UniqueRFTCollection) {
     const constitution = [];
     for (let i = 0; i < 65; i++) {
       constitution.push({
@@ -116,82 +116,82 @@
         permission: Math.random() > 0.5 ? {mutable: true, collectionAdmin: true, tokenOwner: true} : {},
       });
     }
-  
+
     await expect(collection.setTokenPropertyPermissions(alice, constitution))
       .to.be.rejectedWith(/common\.PropertyLimitReached/);
-  
+
     const propertyRights = await collection.getPropertyPermissions();
     expect(propertyRights).to.be.empty;
   }
-  
+
   itSub('Prevents from adding too many possible properties (NFT)', async ({helper}) =>  {
     await testPreventFromAddingTooManyPossibleProperties(await helper.nft.mintCollection(alice));
   });
-  
+
   itSub.ifWithPallets('Prevents from adding too many possible properties (ReFungible)', [Pallets.ReFungible], async ({helper}) => {
     await testPreventFromAddingTooManyPossibleProperties(await helper.rft.mintCollection(alice));
   });
-  
+
   async function testPreventAccessRightsModifiedIfConstant(collection: UniqueNFTCollection | UniqueRFTCollection) {
     await expect(collection.setTokenPropertyPermissions(alice, [{key: 'skullduggery', permission: {mutable: false, tokenOwner: true}}]))
       .to.be.fulfilled;
-  
+
     await expect(collection.setTokenPropertyPermissions(alice, [{key: 'skullduggery', permission: {collectionAdmin: true}}]))
       .to.be.rejectedWith(/common\.NoPermission/);
-  
+
     const propertyRights = await collection.getPropertyPermissions(['skullduggery']);
     expect(propertyRights).to.deep.equal([
       {key: 'skullduggery', permission: {'mutable': false, 'collectionAdmin': false, 'tokenOwner': true}},
     ]);
   }
-  
+
   itSub('Prevents access rights to be modified if constant (NFT)', async ({helper}) =>  {
     await testPreventAccessRightsModifiedIfConstant(await helper.nft.mintCollection(alice));
   });
-  
+
   itSub.ifWithPallets('Prevents access rights to be modified if constant (ReFungible)', [Pallets.ReFungible], async ({helper}) => {
     await testPreventAccessRightsModifiedIfConstant(await helper.rft.mintCollection(alice));
   });
-  
+
   async function testPreventsAddingPropertiesWithInvalidNames(collection: UniqueNFTCollection | UniqueRFTCollection) {
     const invalidProperties = [
       [{key: 'skullduggery', permission: {tokenOwner: true}}, {key: 'im possible', permission: {collectionAdmin: true}}],
       [{key: 'G#4', permission: {tokenOwner: true}}],
       [{key: 'HÆMILTON', permission: {mutable: false, collectionAdmin: true, tokenOwner: true}}],
     ];
-  
+
     for (let i = 0; i < invalidProperties.length; i++) {
       await expect(
-        collection.setTokenPropertyPermissions(alice, invalidProperties[i]), 
+        collection.setTokenPropertyPermissions(alice, invalidProperties[i]),
         `on setting the new badly-named property #${i}`,
       ).to.be.rejectedWith(/common\.InvalidCharacterInPropertyKey/);
     }
-  
+
     await expect(
-      collection.setTokenPropertyPermissions(alice, [{key: '', permission: {}}]), 
+      collection.setTokenPropertyPermissions(alice, [{key: '', permission: {}}]),
       'on rejecting an unnamed property',
     ).to.be.rejectedWith(/common\.EmptyPropertyKey/);
-  
+
     const correctKey = '--0x03116e387820CA05'; // PolkadotJS would parse this as an already encoded hex-string
     await expect(
       collection.setTokenPropertyPermissions(alice, [
         {key: correctKey, permission: {collectionAdmin: true}},
-      ]), 
+      ]),
       'on setting the correctly-but-still-badly-named property',
     ).to.be.fulfilled;
-  
+
     const keys = invalidProperties.flatMap(propertySet => propertySet.map(property => property.key)).concat(correctKey).concat('');
-  
+
     const propertyRights = await collection.getPropertyPermissions(keys);
     expect(propertyRights).to.be.deep.equal([
       {key: correctKey, permission: {mutable: false, collectionAdmin: true, tokenOwner: false}},
     ]);
   }
-  
+
   itSub('Prevents adding properties with invalid names (NFT)', async ({helper}) =>  {
     await testPreventsAddingPropertiesWithInvalidNames(await helper.nft.mintCollection(alice));
   });
-  
+
   itSub.ifWithPallets('Prevents adding properties with invalid names (ReFungible)', [Pallets.ReFungible], async ({helper}) => {
     await testPreventsAddingPropertiesWithInvalidNames(await helper.rft.mintCollection(alice));
   });

--- a/tests/src/nesting/tokenProperties.seqtest.ts
+++ b/tests/src/nesting/tokenProperties.seqtest.ts
@@ -31,7 +31,7 @@
 
   [
     {mode: 'nft' as const, pieces: undefined, requiredPallets: []},
-    {mode: 'rft' as const, pieces: 100n, requiredPallets: [Pallets.ReFungible]}, 
+    {mode: 'rft' as const, pieces: 100n, requiredPallets: [Pallets.ReFungible]},
   ].map(testSuite => describe(`${testSuite.mode.toUpperCase()}`, () => {
     before(async function() {
       // eslint-disable-next-line require-await
@@ -39,7 +39,7 @@
         requirePalletsOrSkip(this, helper, testSuite.requiredPallets);
       });
     });
-    
+
     itSub('force_repair_item preserves valid consumed space', async({helper}) => {
       const propKey = 'tok-prop';
 

--- a/tests/src/nesting/tokenProperties.test.ts
+++ b/tests/src/nesting/tokenProperties.test.ts
@@ -43,12 +43,12 @@
 
   async function mintCollectionWithAllPermissionsAndToken(helper: UniqueHelper, mode: 'NFT' | 'RFT'): Promise<[UniqueNFToken | UniqueRFToken, bigint]> {
     const collection = await (mode == 'NFT' ? helper.nft : helper.rft).mintCollection(alice, {
-      tokenPropertyPermissions: permissions.flatMap(({permission, signers}, i) => 
+      tokenPropertyPermissions: permissions.flatMap(({permission, signers}, i) =>
         signers.map(signer => {return {key: `${i+1}_${signer.address}`, permission};})),
     });
     return mode == 'NFT' ? [await collection.mintToken(alice), 1n] : [await collection.mintToken(alice, 100n), 100n];
   }
-  
+
   async function testReadsYetEmptyProperties(token: UniqueNFToken | UniqueRFToken) {
     const properties = await token.getProperties();
     expect(properties).to.be.empty;
@@ -84,7 +84,7 @@
         propertyKeys.push(key);
 
         await expect(
-          token.setProperties(signer, [{key: key, value: 'Serotonin increase'}]), 
+          token.setProperties(signer, [{key: key, value: 'Serotonin increase'}]),
           `on adding property #${i} by signer #${j}`,
         ).to.be.fulfilled;
       }
@@ -117,7 +117,7 @@
     for (const permission of permissions) {
       i++;
       if (!permission.permission.mutable) continue;
-      
+
       let j = 0;
       for (const signer of permission.signers) {
         j++;
@@ -125,12 +125,12 @@
         propertyKeys.push(key);
 
         await expect(
-          token.setProperties(signer, [{key, value: 'Serotonin increase'}]), 
+          token.setProperties(signer, [{key, value: 'Serotonin increase'}]),
           `on adding property #${i} by signer #${j}`,
         ).to.be.fulfilled;
 
         await expect(
-          token.setProperties(signer, [{key, value: 'Serotonin stable'}]), 
+          token.setProperties(signer, [{key, value: 'Serotonin stable'}]),
           `on changing property #${i} by signer #${j}`,
         ).to.be.fulfilled;
       }
@@ -164,7 +164,7 @@
     for (const permission of permissions) {
       i++;
       if (!permission.permission.mutable) continue;
-      
+
       let j = 0;
       for (const signer of permission.signers) {
         j++;
@@ -172,12 +172,12 @@
         propertyKeys.push(key);
 
         await expect(
-          token.setProperties(signer, [{key, value: 'Serotonin increase'}]), 
+          token.setProperties(signer, [{key, value: 'Serotonin increase'}]),
           `on adding property #${i} by signer #${j}`,
         ).to.be.fulfilled;
 
         await expect(
-          token.deleteProperties(signer, [key]), 
+          token.deleteProperties(signer, [key]),
           `on deleting property #${i} by signer #${j}`,
         ).to.be.fulfilled;
       }
@@ -186,7 +186,7 @@
     expect(await token.getProperties(propertyKeys)).to.be.empty;
     expect((await token.getData())!.properties).to.be.empty;
   }
-  
+
   itSub('Deletes properties of a token according to permissions (NFT)', async ({helper}) =>  {
     const [token, amount] = await mintCollectionWithAllPermissionsAndToken(helper, 'NFT');
     await testDeletePropertiesAccordingPermission(token, amount);
@@ -200,7 +200,7 @@
   itSub('Assigns properties to a nested token according to permissions', async ({helper}) =>  {
     const collectionA = await helper.nft.mintCollection(alice, {permissions: {nesting: {tokenOwner: true}}});
     const collectionB = await helper.nft.mintCollection(alice, {
-      tokenPropertyPermissions: permissions.flatMap(({permission, signers}, i) => 
+      tokenPropertyPermissions: permissions.flatMap(({permission, signers}, i) =>
         signers.map(signer => {return {key: `${i+1}_${signer.address}`, permission};})),
     });
     const targetToken = await collectionA.mintToken(alice);
@@ -220,7 +220,7 @@
         propertyKeys.push(key);
 
         await expect(
-          nestedToken.setProperties(signer, [{key, value: 'Serotonin increase'}]), 
+          nestedToken.setProperties(signer, [{key, value: 'Serotonin increase'}]),
           `on adding property #${i} by signer #${j}`,
         ).to.be.fulfilled;
       }
@@ -238,7 +238,7 @@
   itSub('Changes properties of a nested token according to permissions', async ({helper}) =>  {
     const collectionA = await helper.nft.mintCollection(alice, {permissions: {nesting: {tokenOwner: true}}});
     const collectionB = await helper.nft.mintCollection(alice, {
-      tokenPropertyPermissions: permissions.flatMap(({permission, signers}, i) => 
+      tokenPropertyPermissions: permissions.flatMap(({permission, signers}, i) =>
         signers.map(signer => {return {key: `${i+1}_${signer.address}`, permission};})),
     });
     const targetToken = await collectionA.mintToken(alice);
@@ -252,7 +252,7 @@
     for (const permission of permissions) {
       i++;
       if (!permission.permission.mutable) continue;
-      
+
       let j = 0;
       for (const signer of permission.signers) {
         j++;
@@ -260,12 +260,12 @@
         propertyKeys.push(key);
 
         await expect(
-          nestedToken.setProperties(signer, [{key, value: 'Serotonin increase'}]), 
+          nestedToken.setProperties(signer, [{key, value: 'Serotonin increase'}]),
           `on adding property #${i} by signer #${j}`,
         ).to.be.fulfilled;
 
         await expect(
-          nestedToken.setProperties(signer, [{key, value: 'Serotonin stable'}]), 
+          nestedToken.setProperties(signer, [{key, value: 'Serotonin stable'}]),
           `on changing property #${i} by signer #${j}`,
         ).to.be.fulfilled;
       }
@@ -283,7 +283,7 @@
   itSub('Deletes properties of a nested token according to permissions', async ({helper}) =>  {
     const collectionA = await helper.nft.mintCollection(alice, {permissions: {nesting: {tokenOwner: true}}});
     const collectionB = await helper.nft.mintCollection(alice, {
-      tokenPropertyPermissions: permissions.flatMap(({permission, signers}, i) => 
+      tokenPropertyPermissions: permissions.flatMap(({permission, signers}, i) =>
         signers.map(signer => {return {key: `${i+1}_${signer.address}`, permission};})),
     });
     const targetToken = await collectionA.mintToken(alice);
@@ -297,7 +297,7 @@
     for (const permission of permissions) {
       i++;
       if (!permission.permission.mutable) continue;
-      
+
       let j = 0;
       for (const signer of permission.signers) {
         j++;
@@ -305,12 +305,12 @@
         propertyKeys.push(key);
 
         await expect(
-          nestedToken.setProperties(signer, [{key, value: 'Serotonin increase'}]), 
+          nestedToken.setProperties(signer, [{key, value: 'Serotonin increase'}]),
           `on adding property #${i} by signer #${j}`,
         ).to.be.fulfilled;
 
         await expect(
-          nestedToken.deleteProperties(signer, [key]), 
+          nestedToken.deleteProperties(signer, [key]),
           `on deleting property #${i} by signer #${j}`,
         ).to.be.fulfilled;
       }
@@ -323,7 +323,7 @@
 
   [
     {mode: 'nft' as const, storage: 'nonfungible' as const, pieces: undefined, requiredPallets: []},
-    {mode: 'rft' as const, storage: 'refungible' as const, pieces: 100n, requiredPallets: [Pallets.ReFungible]}, 
+    {mode: 'rft' as const, storage: 'refungible' as const, pieces: 100n, requiredPallets: [Pallets.ReFungible]},
   ].map(testCase =>
     itSub.ifWithPallets(`Allows modifying a token property multiple times with the same size (${testCase.mode})`, testCase.requiredPallets, async({helper}) => {
       const propKey = 'tok-prop';
@@ -370,7 +370,7 @@
 
   [
     {mode: 'nft' as const, pieces: undefined, requiredPallets: []},
-    {mode: 'rft' as const, pieces: 100n, requiredPallets: [Pallets.ReFungible]}, 
+    {mode: 'rft' as const, pieces: 100n, requiredPallets: [Pallets.ReFungible]},
   ].map(testCase =>
     itSub.ifWithPallets(`Adding then removing a token property doesn't change the consumed space (${testCase.mode})`, testCase.requiredPallets, async({helper}) => {
       const propKey = 'tok-prop';
@@ -404,7 +404,7 @@
 
   [
     {mode: 'nft' as const, pieces: undefined, requiredPallets: []},
-    {mode: 'rft' as const, pieces: 100n, requiredPallets: [Pallets.ReFungible]}, 
+    {mode: 'rft' as const, pieces: 100n, requiredPallets: [Pallets.ReFungible]},
   ].map(testCase =>
     itSub.ifWithPallets(`Modifying a token property with different sizes correctly changes the consumed space (${testCase.mode})`, testCase.requiredPallets, async({helper}) => {
       const propKey = 'tok-prop';
@@ -497,12 +497,12 @@
       i++;
       const signer = passage.signers[0];
       await expect(
-        token.setProperties(signer, [{key: `${i}`, value: 'Serotonin increase'}]), 
+        token.setProperties(signer, [{key: `${i}`, value: 'Serotonin increase'}]),
         `on adding property ${i} by ${signer.address}`,
       ).to.be.fulfilled;
     }
 
-    const originalSpace = await getConsumedSpace(token.collection.helper.getApi(), token.collectionId, token.tokenId, pieces == 1n ? 'NFT' : 'RFT'); 
+    const originalSpace = await getConsumedSpace(token.collection.helper.getApi(), token.collectionId, token.tokenId, pieces == 1n ? 'NFT' : 'RFT');
     return originalSpace;
   }
 
@@ -515,17 +515,17 @@
       if (!forbiddance.permission.mutable) continue;
 
       await expect(
-        token.setProperties(forbiddance.sinner, [{key: `${i}`, value: 'Serotonin down'}]), 
+        token.setProperties(forbiddance.sinner, [{key: `${i}`, value: 'Serotonin down'}]),
         `on failing to change property ${i} by the malefactor`,
       ).to.be.rejectedWith(/common\.NoPermission/);
 
       await expect(
-        token.deleteProperties(forbiddance.sinner, [`${i}`]), 
+        token.deleteProperties(forbiddance.sinner, [`${i}`]),
         `on failing to delete property ${i} by the malefactor`,
       ).to.be.rejectedWith(/common\.NoPermission/);
     }
 
-    const consumedSpace = await getConsumedSpace(token.collection.helper.getApi(), token.collectionId, token.tokenId, pieces == 1n ? 'NFT' : 'RFT'); 
+    const consumedSpace = await getConsumedSpace(token.collection.helper.getApi(), token.collectionId, token.tokenId, pieces == 1n ? 'NFT' : 'RFT');
     expect(consumedSpace).to.be.equal(originalSpace);
   }
 
@@ -548,17 +548,17 @@
       if (permission.permission.mutable) continue;
 
       await expect(
-        token.setProperties(permission.signers[0], [{key: `${i}`, value: 'Serotonin down'}]), 
+        token.setProperties(permission.signers[0], [{key: `${i}`, value: 'Serotonin down'}]),
         `on failing to change property ${i} by signer #0`,
       ).to.be.rejectedWith(/common\.NoPermission/);
 
       await expect(
-        token.deleteProperties(permission.signers[0], [i.toString()]), 
+        token.deleteProperties(permission.signers[0], [i.toString()]),
         `on failing to delete property ${i} by signer #0`,
       ).to.be.rejectedWith(/common\.NoPermission/);
     }
-  
-    const consumedSpace = await getConsumedSpace(token.collection.helper.getApi(), token.collectionId, token.tokenId, pieces == 1n ? 'NFT' : 'RFT'); 
+
+    const consumedSpace = await getConsumedSpace(token.collection.helper.getApi(), token.collectionId, token.tokenId, pieces == 1n ? 'NFT' : 'RFT');
     expect(consumedSpace).to.be.equal(originalSpace);
   }
 
@@ -576,23 +576,23 @@
     const originalSpace = await prepare(token, pieces);
 
     await expect(
-      token.setProperties(alice, [{key: 'non-existent', value: 'I exist!'}]), 
+      token.setProperties(alice, [{key: 'non-existent', value: 'I exist!'}]),
       'on failing to add a previously non-existent property',
     ).to.be.rejectedWith(/common\.NoPermission/);
-      
+
     await expect(
-      token.collection.setTokenPropertyPermissions(alice, [{key: 'now-existent', permission: {}}]), 
+      token.collection.setTokenPropertyPermissions(alice, [{key: 'now-existent', permission: {}}]),
       'on setting a new non-permitted property',
     ).to.be.fulfilled;
 
     await expect(
-      token.setProperties(alice, [{key: 'now-existent', value: 'I exist!'}]), 
+      token.setProperties(alice, [{key: 'now-existent', value: 'I exist!'}]),
       'on failing to add a property forbidden by the \'None\' permission',
     ).to.be.rejectedWith(/common\.NoPermission/);
 
     expect(await token.getProperties(['non-existent', 'now-existent'])).to.be.empty;
-      
-    const consumedSpace = await getConsumedSpace(token.collection.helper.getApi(), token.collectionId, token.tokenId, pieces == 1n ? 'NFT' : 'RFT'); 
+
+    const consumedSpace = await getConsumedSpace(token.collection.helper.getApi(), token.collectionId, token.tokenId, pieces == 1n ? 'NFT' : 'RFT');
     expect(consumedSpace).to.be.equal(originalSpace);
   }
 
@@ -611,9 +611,9 @@
 
     await expect(
       token.collection.setTokenPropertyPermissions(alice, [
-        {key: 'a_holy_book', permission: {collectionAdmin: true, tokenOwner: true}}, 
+        {key: 'a_holy_book', permission: {collectionAdmin: true, tokenOwner: true}},
         {key: 'young_years', permission: {collectionAdmin: true, tokenOwner: true}},
-      ]), 
+      ]),
       'on setting new permissions for properties',
     ).to.be.fulfilled;
 
@@ -625,12 +625,12 @@
     }
 
     await expect(token.setProperties(alice, [
-      {key: 'a_holy_book', value: 'word '.repeat(3277)}, 
+      {key: 'a_holy_book', value: 'word '.repeat(3277)},
       {key: 'young_years', value: 'neverending'.repeat(1490)},
     ])).to.be.rejectedWith(/common\.NoSpaceForProperty/);
-  
+
     expect(await token.getProperties(['a_holy_book', 'young_years'])).to.be.empty;
-    const consumedSpace = await getConsumedSpace(token.collection.helper.getApi(), token.collectionId, token.tokenId, pieces == 1n ? 'NFT' : 'RFT'); 
+    const consumedSpace = await getConsumedSpace(token.collection.helper.getApi(), token.collectionId, token.tokenId, pieces == 1n ? 'NFT' : 'RFT');
     expect(consumedSpace).to.be.equal(originalSpace);
   }
 
@@ -646,7 +646,7 @@
 
   [
     {mode: 'nft' as const, requiredPallets: []},
-    {mode: 'rft' as const, requiredPallets: [Pallets.ReFungible]}, 
+    {mode: 'rft' as const, requiredPallets: [Pallets.ReFungible]},
   ].map(testCase =>
     itSub.ifWithPallets(`Forbids adding too many propeties to a token (${testCase.mode})`, testCase.requiredPallets, async({helper}) => {
       const collection = await helper[testCase.mode].mintCollection(alice);
@@ -667,7 +667,7 @@
 
   [
     {mode: 'nft' as const, pieces: undefined, requiredPallets: []},
-    {mode: 'rft' as const, pieces: 100n, requiredPallets: [Pallets.ReFungible]}, 
+    {mode: 'rft' as const, pieces: 100n, requiredPallets: [Pallets.ReFungible]},
   ].map(testCase =>
     itSub.ifWithPallets(`Forbids force_repair_item from non-sudo (${testCase.mode})`, testCase.requiredPallets, async({helper}) => {
       const propKey = 'tok-prop';
@@ -712,10 +712,10 @@
   async function prepare(helper: UniqueHelper): Promise<UniqueRFToken> {
     const collection = await helper.rft.mintCollection(alice);
     const token = await collection.mintToken(alice, 100n);
-    
+
     await collection.addAdmin(alice, {Substrate: bob.address});
     await collection.setTokenPropertyPermissions(alice, [{key: 'fractals', permission: {mutable: true, tokenOwner: true}}]);
-    
+
     return token;
   }
 
@@ -725,7 +725,7 @@
     await token.transfer(alice, {Substrate: charlie.address}, 33n);
 
     await expect(token.setProperties(alice, [
-      {key: 'fractals', value: 'multiverse'}, 
+      {key: 'fractals', value: 'multiverse'},
     ])).to.be.rejectedWith(/common\.NoPermission/);
   });
 
@@ -736,13 +736,13 @@
       .to.be.fulfilled;
 
     await expect(token.setProperties(alice, [
-      {key: 'fractals', value: 'multiverse'}, 
+      {key: 'fractals', value: 'multiverse'},
     ])).to.be.fulfilled;
 
     await token.transfer(alice, {Substrate: charlie.address}, 33n);
 
     await expect(token.setProperties(alice, [
-      {key: 'fractals', value: 'want to rule the world'}, 
+      {key: 'fractals', value: 'want to rule the world'},
     ])).to.be.rejectedWith(/common\.NoPermission/);
   });
 
@@ -750,7 +750,7 @@
     const token = await prepare(helper);
 
     await expect(token.setProperties(alice, [
-      {key: 'fractals', value: 'one headline - why believe it'}, 
+      {key: 'fractals', value: 'one headline - why believe it'},
     ])).to.be.fulfilled;
 
     await token.transfer(alice, {Substrate: charlie.address}, 33n);
@@ -768,7 +768,7 @@
       .to.be.fulfilled;
 
     await expect(token.setProperties(alice, [
-      {key: 'fractals', value: 'multiverse'}, 
+      {key: 'fractals', value: 'multiverse'},
     ])).to.be.fulfilled;
   });
 });

--- a/tests/src/nesting/unnest.test.ts
+++ b/tests/src/nesting/unnest.test.ts
@@ -30,7 +30,7 @@
   itSub('NFT: allows the owner to successfully unnest a token', async ({helper}) => {
     const collection = await helper.nft.mintCollection(alice, {permissions: {nesting: {tokenOwner: true}}});
     const targetToken = await collection.mintToken(alice);
-    
+
     // Create a nested token
     const nestedToken = await collection.mintToken(alice, targetToken.nestingAccount());
 
@@ -49,7 +49,7 @@
     const targetToken = await collection.mintToken(alice);
 
     const collectionFT = await helper.ft.mintCollection(alice);
-    
+
     // Nest and unnest
     await collectionFT.mint(alice, 10n, targetToken.nestingAccount());
     await expect(collectionFT.transferFrom(alice, targetToken.nestingAccount(), {Substrate: alice.address}, 9n), 'while unnesting').to.be.fulfilled;
@@ -69,7 +69,7 @@
     const targetToken = await collection.mintToken(alice);
 
     const collectionRFT = await helper.rft.mintCollection(alice);
-    
+
     // Nest and unnest
     const token = await collectionRFT.mintToken(alice, 10n, targetToken.nestingAccount());
     await expect(token.transferFrom(alice, targetToken.nestingAccount(), {Substrate: alice.address}, 9n), 'while unnesting').to.be.fulfilled;

--- a/tests/src/nextSponsoring.test.ts
+++ b/tests/src/nextSponsoring.test.ts
@@ -39,7 +39,7 @@
 
     // Check with Disabled sponsoring state
     expect(await token.getNextSponsored({Substrate: alice.address})).to.be.null;
-    
+
     // Check with Unconfirmed sponsoring state
     await collection.setSponsor(alice, bob.address);
     expect(await token.getNextSponsored({Substrate: alice.address})).to.be.null;
@@ -52,7 +52,7 @@
     await token.transfer(alice, {Substrate: bob.address});
     expect(await token.getNextSponsored({Substrate: alice.address})).to.be.lessThanOrEqual(SPONSORING_TIMEOUT);
 
-    // Non-existing token 
+    // Non-existing token
     expect(await collection.getTokenNextSponsored(0, {Substrate: alice.address})).to.be.null;
   });
 
@@ -65,7 +65,7 @@
 
     await collection.setSponsor(alice, bob.address);
     await collection.confirmSponsorship(bob);
-    
+
     // Check with Confirmed sponsoring state
     expect(await collection.getTokenNextSponsored(0, {Substrate: alice.address})).to.be.equal(0);
 
@@ -91,7 +91,7 @@
     await token.transfer(alice, {Substrate: bob.address});
     expect(await token.getNextSponsored({Substrate: alice.address})).to.be.lessThanOrEqual(SPONSORING_TIMEOUT);
 
-    // Non-existing token 
+    // Non-existing token
     expect(await collection.getTokenNextSponsored(0, {Substrate: alice.address})).to.be.null;
   });
 });

--- a/tests/src/refungible.test.ts
+++ b/tests/src/refungible.test.ts
@@ -32,36 +32,36 @@
       [alice, bob] = await helper.arrange.createAccounts([100n, 10n], donor);
     });
   });
-  
+
   itSub('Create refungible collection and token', async ({helper}) => {
     const collection = await helper.rft.mintCollection(alice, {name: 'test', description: 'test', tokenPrefix: 'test'});
 
     const itemCountBefore = await collection.getLastTokenId();
     const token = await collection.mintToken(alice, 100n);
-    
+
     const itemCountAfter = await collection.getLastTokenId();
-    
+
     // What to expect
     expect(token?.tokenId).to.be.gte(itemCountBefore);
     expect(itemCountAfter).to.be.equal(itemCountBefore + 1);
     expect(itemCountAfter.toString()).to.be.equal(token?.tokenId.toString());
   });
-  
+
   itSub('Checking RPC methods when interacting with maximum allowed values (MAX_REFUNGIBLE_PIECES)', async ({helper}) => {
     const collection = await helper.rft.mintCollection(alice, {name: 'test', description: 'test', tokenPrefix: 'test'});
-    
+
     const token = await collection.mintToken(alice, MAX_REFUNGIBLE_PIECES);
-    
+
     expect(await collection.getTokenBalance(token.tokenId, {Substrate: alice.address})).to.be.equal(MAX_REFUNGIBLE_PIECES);
-    
+
     await collection.transferToken(alice, token.tokenId, {Substrate: bob.address}, MAX_REFUNGIBLE_PIECES);
     expect(await collection.getTokenBalance(token.tokenId, {Substrate: bob.address})).to.be.equal(MAX_REFUNGIBLE_PIECES);
     expect(await token.getTotalPieces()).to.be.equal(MAX_REFUNGIBLE_PIECES);
-    
+
     await expect(collection.mintToken(alice, MAX_REFUNGIBLE_PIECES + 1n))
       .to.eventually.be.rejectedWith(/refungible\.WrongRefungiblePieces/);
   });
-  
+
   itSub('RPC method tokenOwners for refungible collection and token', async ({helper}) => {
     const ethAcc = {Ethereum: '0x67fb3503a61b284dc83fa96dceec4192db47dc7c'};
     const facelessCrowd = (await helper.arrange.createAccounts(Array(7).fill(0n), donor)).map(keyring => {return {Substrate: keyring.address};});
@@ -72,32 +72,32 @@
 
     await token.transfer(alice, {Substrate: bob.address}, 1000n);
     await token.transfer(alice, ethAcc, 900n);
-    
+
     for (let i = 0; i < 7; i++) {
       await token.transfer(alice, facelessCrowd[i], 50n * BigInt(i + 1));
-    } 
+    }
 
     const owners = await token.getTop10Owners();
 
     // What to expect
     expect(owners).to.deep.include.members([{Substrate: alice.address}, ethAcc, {Substrate: bob.address}, ...facelessCrowd]);
     expect(owners.length).to.be.equal(10);
-    
+
     const [eleven] = await helper.arrange.createAccounts([0n], donor);
     expect(await token.transfer(alice, {Substrate: eleven.address}, 10n)).to.be.true;
     expect((await token.getTop10Owners()).length).to.be.equal(10);
   });
-  
+
   itSub('Transfer token pieces', async ({helper}) => {
     const collection = await helper.rft.mintCollection(alice, {name: 'test', description: 'test', tokenPrefix: 'test'});
     const token = await collection.mintToken(alice, 100n);
 
     expect(await token.getBalance({Substrate: alice.address})).to.be.equal(100n);
     expect(await token.transfer(alice, {Substrate: bob.address}, 60n)).to.be.true;
-    
+
     expect(await token.getBalance({Substrate: alice.address})).to.be.equal(40n);
     expect(await token.getBalance({Substrate: bob.address})).to.be.equal(60n);
-    
+
     await expect(token.transfer(alice, {Substrate: bob.address}, 41n))
       .to.eventually.be.rejectedWith(/common\.TokenValueTooLow/);
   });
@@ -111,8 +111,8 @@
     //   {owner: {Substrate: alice.address}, pieces: 100n},
     // ]);
     await helper.rft.mintMultipleTokensWithOneOwner(alice, collection.collectionId, {Substrate: alice.address}, [
-      {pieces: 1n}, 
-      {pieces: 2n}, 
+      {pieces: 1n},
+      {pieces: 2n},
       {pieces: 100n},
     ]);
     const lastTokenId = await collection.getLastTokenId();
@@ -133,7 +133,7 @@
   itSub('Burn all pieces', async ({helper}) => {
     const collection = await helper.rft.mintCollection(alice, {name: 'test', description: 'test', tokenPrefix: 'test'});
     const token = await collection.mintToken(alice, 100n);
-    
+
     expect(await collection.doesTokenExist(token.tokenId)).to.be.true;
     expect(await token.getBalance({Substrate: alice.address})).to.be.equal(100n);
 
@@ -146,7 +146,7 @@
     const token = await collection.mintToken(alice, 100n);
 
     expect(await collection.doesTokenExist(token.tokenId)).to.be.true;
-    
+
     expect(await token.getBalance({Substrate: alice.address})).to.be.equal(100n);
     expect(await token.transfer(alice, {Substrate: bob.address}, 60n)).to.be.true;
 
@@ -171,7 +171,7 @@
   itSub('Set allowance for token', async ({helper}) => {
     const collection = await helper.rft.mintCollection(alice, {name: 'test', description: 'test', tokenPrefix: 'test'});
     const token = await collection.mintToken(alice, 100n);
-    
+
     expect(await token.getBalance({Substrate: alice.address})).to.be.equal(100n);
 
     expect(await token.approve(alice, {Substrate: bob.address}, 60n)).to.be.true;
@@ -190,14 +190,14 @@
     expect(await token.repartition(alice, 200n)).to.be.true;
     expect(await token.getBalance({Substrate: alice.address})).to.be.equal(200n);
     expect(await token.getTotalPieces()).to.be.equal(200n);
-    
+
     expect(await token.transfer(alice, {Substrate: bob.address}, 110n)).to.be.true;
     expect(await token.getBalance({Substrate: alice.address})).to.be.equal(90n);
     expect(await token.getBalance({Substrate: bob.address})).to.be.equal(110n);
-    
+
     await expect(token.repartition(alice, 80n))
       .to.eventually.be.rejectedWith(/refungible\.RepartitionWhileNotOwningAllPieces/);
-    
+
     expect(await token.transfer(alice, {Substrate: bob.address}, 90n)).to.be.true;
     expect(await token.getBalance({Substrate: alice.address})).to.be.equal(0n);
     expect(await token.getBalance({Substrate: bob.address})).to.be.equal(200n);
@@ -220,7 +220,7 @@
       data: [
         collection.collectionId,
         token.tokenId,
-        {substrate: alice.address}, 
+        {substrate: alice.address},
         100n,
       ],
     });
@@ -239,12 +239,12 @@
       data: [
         collection.collectionId,
         token.tokenId,
-        {substrate: alice.address}, 
+        {substrate: alice.address},
         50n,
       ],
     });
   });
-  
+
   itSub('Create new collection with properties', async ({helper}) => {
     const properties = [{key: 'key1', value: 'val1'}];
     const tokenPropertyPermissions = [{key: 'key1', permission: {tokenOwner: true, mutable: false, collectionAdmin: true}}];
@@ -280,7 +280,7 @@
     await expect(tokenBob.transfer(alice, {Substrate: charlie.address}, 1n)).to.be.rejectedWith('common.TokenValueTooLow');
     await expect(tokenBob.transfer(alice, {Substrate: charlie.address}, 10n)).to.be.rejectedWith('common.TokenValueTooLow');
     await expect(tokenBob.transfer(alice, {Substrate: charlie.address}, 100n)).to.be.rejectedWith('common.TokenValueTooLow');
-    
+
     // 2. Alice cannot transfer non-existing token:
     await expect(collection.transferToken(alice, 100, {Substrate: charlie.address}, 0n)).to.be.rejectedWith('common.TokenValueTooLow');
     await expect(collection.transferToken(alice, 100, {Substrate: charlie.address}, 1n)).to.be.rejectedWith('common.TokenValueTooLow');

--- a/tests/src/removeCollectionAdmin.test.ts
+++ b/tests/src/removeCollectionAdmin.test.ts
@@ -94,7 +94,7 @@
 
   itSub('Admin can\'t remove collection admin.', async ({helper}) => {
     const collection = await helper.nft.mintCollection(alice, {name: 'RemoveCollectionAdmin-Neg-4', tokenPrefix: 'RCA'});
-    
+
     await collection.addAdmin(alice, {Substrate: bob.address});
     await collection.addAdmin(alice, {Substrate: charlie.address});
 

--- a/tests/src/rpc.test.ts
+++ b/tests/src/rpc.test.ts
@@ -35,20 +35,20 @@
     const owner = (await helper.callRpc('api.rpc.unique.tokenOwner', [collection.collectionId, 0])).toJSON() as any;
     expect(owner).to.be.null;
   });
-  
+
   itSub('RPC method tokenOwners for fungible collection and token', async ({helper}) => {
     // Set-up a few token owners of all stripes
     const ethAcc = {Ethereum: '0x67fb3503a61b284dc83fa96dceec4192db47dc7c'};
     const facelessCrowd = (await helper.arrange.createAccounts([0n, 0n, 0n, 0n, 0n, 0n, 0n], donor))
       .map(i => {return {Substrate: i.address};});
-    
+
     const collection = await helper.ft.mintCollection(alice, {name: 'RPC-2', tokenPrefix: 'RPC'});
     // mint some maximum (u128) amounts of tokens possible
     await collection.mint(alice, (1n << 128n) - 1n);
-    
+
     await collection.transfer(alice, {Substrate: bob.address}, 1000n);
     await collection.transfer(alice, ethAcc, 900n);
-          
+
     for (let i = 0; i < facelessCrowd.length; i++) {
       await collection.transfer(alice, facelessCrowd[i], 1n);
     }
@@ -59,7 +59,7 @@
 
     expect(ids).to.deep.include.members([{Substrate: alice.address}, ethAcc, {Substrate: bob.address}, ...facelessCrowd]);
     expect(owners.length == 10).to.be.true;
-    
+
     // Make sure only 10 results are returned with this RPC
     const [eleven] = await helper.arrange.createAccounts([0n], donor);
     expect(await collection.transfer(alice, {Substrate: eleven.address}, 10n)).to.be.true;

--- a/tests/src/scheduler.seqtest.ts
+++ b/tests/src/scheduler.seqtest.ts
@@ -47,7 +47,7 @@
     const token = await collection.mintToken(alice);
     const scheduledId = scheduleKind == 'named' ? helper.arrange.makeScheduledId() : undefined;
     const blocksBeforeExecution = 4;
-    
+
     await token.scheduleAfter(blocksBeforeExecution, {scheduledId})
       .transfer(alice, {Substrate: bob.address});
     const executionBlock = await helper.chain.getLatestBlockNumber() + blocksBeforeExecution + 1;
@@ -156,7 +156,7 @@
     const maxScheduledPerBlock = 50;
     let fillScheduledIds = new Array(maxScheduledPerBlock);
     let extraScheduledId = undefined;
-    
+
     if (scheduleKind == 'named') {
       const scheduledIds = helper.arrange.makeScheduledIds(maxScheduledPerBlock + 1);
       fillScheduledIds = scheduledIds.slice(0, maxScheduledPerBlock);
@@ -641,7 +641,7 @@
     const balanceBefore = await helper.balance.getSubstrate(bob.address);
 
     const scheduled = helper.scheduler.scheduleAfter(waitForBlocks, {scheduledId, priority: 42});
-    
+
     await expect(scheduled.balance.transferToSubstrate(alice, bob.address, amount))
       .to.be.rejectedWith(/BadOrigin/);
 

--- a/tests/src/setCollectionLimits.test.ts
+++ b/tests/src/setCollectionLimits.test.ts
@@ -75,7 +75,7 @@
     await collection.setLimits(alice, collectionLimits);
 
     const collectionInfo1 = await collection.getEffectiveLimits();
-      
+
     expect(collectionInfo1.tokenLimit).to.be.equal(tokenLimit);
 
     await collection.setLimits(alice, collectionLimits);
@@ -108,7 +108,7 @@
       [alice, bob] = await helper.arrange.createAccounts([20n, 10n], donor);
     });
   });
-  
+
   itSub('execute setCollectionLimits for not exists collection', async ({helper}) => {
     const nonExistentCollectionId = (1 << 32) - 1;
     await expect(helper.collection.setLimits(
@@ -180,7 +180,7 @@
 
   itSub('Setting the higher token limit fails', async ({helper}) => {
     const collection = await helper.nft.mintCollection(alice, {name: 'SetCollectionLimits-Neg-4', tokenPrefix: 'SCL'});
-      
+
     const collectionLimits = {
       accountTokenOwnershipLimit: accountTokenOwnershipLimit,
       sponsoredMintSize: sponsoredDataSize,

--- a/tests/src/setCollectionSponsor.test.ts
+++ b/tests/src/setCollectionSponsor.test.ts
@@ -37,7 +37,7 @@
       Unconfirmed: bob.address,
     });
   });
-  
+
   itSub('Set Fungible collection sponsor', async ({helper}) => {
     const collection = await helper.ft.mintCollection(alice, {name: 'SetCollectionSponsor-1-FT', tokenPrefix: 'SCS'});
     await expect(collection.setSponsor(alice, bob.address)).to.be.not.rejected;
@@ -75,7 +75,7 @@
       Unconfirmed: charlie.address,
     });
   });
-  
+
   itSub('Collection admin add sponsor', async ({helper}) => {
     const collection = await helper.nft.mintCollection(alice, {name: 'SetCollectionSponsor-4', tokenPrefix: 'SCS'});
     await collection.addAdmin(alice, {Substrate: bob.address});

--- a/tests/src/setPermissions.test.ts
+++ b/tests/src/setPermissions.test.ts
@@ -34,11 +34,11 @@
 
     await collection.setPermissions(alice, {access: 'AllowList', mintMode: true, nesting: {collectionAdmin: true, tokenOwner: true, restricted: [1, 2]}});
     await collection.setPermissions(alice, {access: 'AllowList', mintMode: true, nesting: {collectionAdmin: true, tokenOwner: true, restricted: [1, 2]}});
-    
+
     const permissions = (await collection.getData())?.raw.permissions;
     expect(permissions).to.be.deep.equal({
-      access: 'AllowList', 
-      mintMode: true, 
+      access: 'AllowList',
+      mintMode: true,
       nesting: {collectionAdmin: true, tokenOwner: true, restricted: [1, 2]},
     });
   });
@@ -49,16 +49,16 @@
 
     await collection.setPermissions(alice, {access: 'AllowList', nesting: {collectionAdmin: false, tokenOwner: true, restricted: [1, 2]}});
     expect((await collection.getData())?.raw.permissions).to.be.deep.equal({
-      access: 'AllowList', 
-      mintMode: false, 
+      access: 'AllowList',
+      mintMode: false,
       nesting: {collectionAdmin: false, tokenOwner: true, restricted: [1, 2]},
     });
 
     await collection.setPermissions(alice, {access: 'Normal', mintMode: false, nesting: {}});
     await collection.setPermissions(alice, {access: 'Normal', mintMode: false, nesting: {}});
     expect((await collection.getData())?.raw.permissions).to.be.deep.equal({
-      access: 'Normal', 
-      mintMode: false, 
+      access: 'Normal',
+      mintMode: false,
       nesting: {collectionAdmin: false, tokenOwner: false, restricted: null},
     });
   });
@@ -67,7 +67,7 @@
     const collection = await helper.nft.mintCollection(alice, {name: 'SetPermissions-2', tokenPrefix: 'SP'});
     await collection.addAdmin(alice, {Substrate: bob.address});
     await collection.setPermissions(bob, {access: 'AllowList', mintMode: true});
-    
+
     expect((await collection.getData())?.raw.permissions.access).to.equal('AllowList');
     expect((await collection.getData())?.raw.permissions.mintMode).to.equal(true);
   });

--- a/tests/src/transfer.nload.ts
+++ b/tests/src/transfer.nload.ts
@@ -14,6 +14,7 @@
 // You should have received a copy of the GNU General Public License
 // along with Unique Network. If not, see <http://www.gnu.org/licenses/>.
 
+/* eslint-disable @typescript-eslint/no-floating-promises */
 import os from 'os';
 import {IKeyringPair} from '@polkadot/types/types';
 import {usingPlaygrounds} from './util';

--- a/tests/src/transfer.test.ts
+++ b/tests/src/transfer.test.ts
@@ -29,7 +29,7 @@
       [alice, bob] = await helper.arrange.createAccounts([50n, 10n], donor);
     });
   });
-  
+
   itSub('Balance transfers and check balance', async ({helper}) => {
     const alicesBalanceBefore = await helper.balance.getSubstrate(alice.address);
     const bobsBalanceBefore = await helper.balance.getSubstrate(bob.address);
@@ -162,7 +162,7 @@
     await expect(collection.transfer(alice, {Substrate: bob.address}))
       .to.be.rejectedWith(/common\.CollectionNotFound/);
   });
-  
+
   itSub.ifWithPallets('[refungible] Transfer with deleted collection_id', [Pallets.ReFungible], async ({helper}) => {
     const collection = await helper.rft.mintCollection(alice, {name: 'Transfer-Neg-1-RFT', description: '', tokenPrefix: 'T'});
     const rft = await collection.mintToken(alice, 10n);
@@ -279,7 +279,7 @@
       donor = await privateKey({filename: __filename});
     });
   });
-  
+
   itEth('Transfers to self. In case of same frontend', async ({helper}) => {
     const [owner] = await helper.arrange.createAccounts([10n], donor);
     const collection = await helper.ft.mintCollection(owner, {});

--- a/tests/src/transferFrom.test.ts
+++ b/tests/src/transferFrom.test.ts
@@ -44,7 +44,7 @@
     await collection.mint(alice, 10n);
     await collection.approveTokens(alice, {Substrate: bob.address}, 7n);
     expect(await collection.getApprovedTokens({Substrate: alice.address}, {Substrate: bob.address})).to.be.equal(7n);
-    
+
     await collection.transferFrom(bob, {Substrate: alice.address}, {Substrate: charlie.address}, 6n);
     expect(await collection.getBalance({Substrate: charlie.address})).to.be.equal(6n);
     expect(await collection.getBalance({Substrate: alice.address})).to.be.equal(4n);
@@ -56,7 +56,7 @@
     const rft = await collection.mintToken(alice, 10n);
     await rft.approve(alice, {Substrate: bob.address}, 7n);
     expect(await rft.getApprovedPieces({Substrate: alice.address}, {Substrate: bob.address})).to.be.equal(7n);
-    
+
     await rft.transferFrom(bob, {Substrate: alice.address}, {Substrate: charlie.address}, 6n);
     expect(await rft.getBalance({Substrate: charlie.address})).to.be.equal(6n);
     expect(await rft.getBalance({Substrate: alice.address})).to.be.equal(4n);
@@ -155,11 +155,11 @@
     expect(await nft.isApproved({Substrate: bob.address})).to.be.true;
 
     await expect(helper.collection.transferTokenFrom(
-      bob, 
-      collection.collectionId, 
-      nft.tokenId, 
-      {Substrate: alice.address}, 
-      {Substrate: charlie.address}, 
+      bob,
+      collection.collectionId,
+      nft.tokenId,
+      {Substrate: alice.address},
+      {Substrate: charlie.address},
       2n,
     )).to.be.rejectedWith(/nonfungible\.NonfungibleItemsHaveNoAmount/);
     expect(await nft.getOwner()).to.be.deep.equal({Substrate: alice.address});
@@ -202,7 +202,7 @@
 
     await expect(nft.transferFrom(
       charlie,
-      {Substrate: alice.address}, 
+      {Substrate: alice.address},
       {Substrate: charlie.address},
     )).to.be.rejectedWith(/common\.ApprovedValueTooLow/);
     expect(await nft.getOwner()).to.be.deep.equal({Substrate: alice.address});
@@ -218,7 +218,7 @@
 
     await expect(collection.transferFrom(
       charlie,
-      {Substrate: alice.address}, 
+      {Substrate: alice.address},
       {Substrate: charlie.address},
     )).to.be.rejectedWith(/common\.ApprovedValueTooLow/);
     expect(await collection.getBalance({Substrate: alice.address})).to.be.deep.equal(10000n);
@@ -236,7 +236,7 @@
 
     await expect(rft.transferFrom(
       charlie,
-      {Substrate: alice.address}, 
+      {Substrate: alice.address},
       {Substrate: charlie.address},
     )).to.be.rejectedWith(/common\.ApprovedValueTooLow/);
     expect(await rft.getBalance({Substrate: alice.address})).to.be.deep.equal(10000n);
@@ -254,7 +254,7 @@
 
     await expect(nft.transferFrom(
       bob,
-      {Substrate: alice.address}, 
+      {Substrate: alice.address},
       {Substrate: charlie.address},
     )).to.be.rejectedWith(/common\.ApprovedValueTooLow/);
   });
@@ -269,7 +269,7 @@
 
     await expect(collection.transferFrom(
       alice,
-      {Substrate: alice.address}, 
+      {Substrate: alice.address},
       {Substrate: charlie.address},
     )).to.be.rejectedWith(/common\.TokenValueTooLow/);
   });
@@ -284,7 +284,7 @@
 
     await expect(rft.transferFrom(
       alice,
-      {Substrate: alice.address}, 
+      {Substrate: alice.address},
       {Substrate: charlie.address},
     )).to.be.rejectedWith(/common\.TokenValueTooLow/);
   });
@@ -300,7 +300,7 @@
 
     await expect(nft.transferFrom(
       bob,
-      {Substrate: alice.address}, 
+      {Substrate: alice.address},
       {Substrate: charlie.address},
     )).to.be.rejectedWith(/common\.ApprovedValueTooLow/);
   });
@@ -316,7 +316,7 @@
 
     await expect(collection.transferFrom(
       bob,
-      {Substrate: alice.address}, 
+      {Substrate: alice.address},
       {Substrate: charlie.address},
     )).to.be.rejectedWith(/common\.TokenValueTooLow/);
   });
@@ -332,7 +332,7 @@
 
     await expect(rft.transferFrom(
       bob,
-      {Substrate: alice.address}, 
+      {Substrate: alice.address},
       {Substrate: charlie.address},
     )).to.be.rejectedWith(/common\.ApprovedValueTooLow/);
   });
@@ -345,7 +345,7 @@
 
     await expect(nft.transferFrom(
       alice,
-      {Substrate: bob.address}, 
+      {Substrate: bob.address},
       {Substrate: charlie.address},
     )).to.be.rejectedWith(/common\.ApprovedValueTooLow/);
   });

--- a/tests/src/util/globalSetup.ts
+++ b/tests/src/util/globalSetup.ts
@@ -17,10 +17,10 @@
       // 2. Create donors for test files
       await fundFilenamesWithRetries(3)
         .then((result) => {
-          if (!result) Promise.reject();
+          if (!result) throw Error('Some problems with fundFilenamesWithRetries');
         });
 
-      // 3. Configure App Promotion 
+      // 3. Configure App Promotion
       const missingPallets = helper.fetchMissingPalletNames([Pallets.AppPromotion]);
       if (missingPallets.length === 0) {
         const superuser = await privateKey('//Alice');
@@ -38,7 +38,7 @@
       }
     } catch (error) {
       console.error(error);
-      Promise.reject();
+      throw Error('Error during globalSetup');
     }
   });
 };
@@ -78,7 +78,7 @@
 
         if (aliceBalance < MINIMUM_DONOR_FUND * oneToken) {
           tx.push(helper.executeExtrinsic(
-            alice, 
+            alice,
             'api.tx.balances.transfer',
             [account.address, DONOR_FUNDING * oneToken],
             true,

--- a/tests/src/util/index.ts
+++ b/tests/src/util/index.ts
@@ -41,7 +41,7 @@
       else {
         const actualSeed = getTestSeed(seed.filename);
         let account = helper.util.fromSeed(actualSeed, ss58Format);
-        // here's to hoping that no 
+        // here's to hoping that no
         if (!seed.ignoreFundsPresence && ((helper as any)['balance'] == undefined || await (helper as any).balance.getSubstrate(account.address) < MINIMUM_DONOR_FUND)) {
           console.warn(`${path.basename(seed.filename)}: Not enough funds present on the filename account. Using the default one as the donor instead.`);
           account = helper.util.fromSeed('//Alice', ss58Format);
@@ -115,7 +115,7 @@
 
 export function requirePalletsOrSkip(test: Context, helper: DevUniqueHelper, requiredPallets: string[]) {
   const missingPallets = helper.fetchMissingPalletNames(requiredPallets);
-    
+
   if (missingPallets.length > 0) {
     const skipMsg = `\tSkipping test '${test.test?.title}'.\n\tThe following pallets are missing:\n\t- ${missingPallets.join('\n\t- ')}`;
     console.warn('\x1b[38:5:208m%s\x1b[0m', skipMsg);
@@ -124,13 +124,13 @@
 }
 
 export function itSub(name: string, cb: (apis: { helper: DevUniqueHelper, privateKey: (seed: string) => Promise<IKeyringPair> }) => any, opts: { only?: boolean, skip?: boolean, requiredPallets?: string[] } = {}) {
-  (opts.only ? it.only : 
+  (opts.only ? it.only :
     opts.skip ? it.skip : it)(name, async function () {
     await usingPlaygrounds(async (helper, privateKey) => {
       if (opts.requiredPallets) {
         requirePalletsOrSkip(this, helper, opts.requiredPallets);
       }
-      
+
       await cb({helper, privateKey});
     });
   });

--- a/tests/src/util/playgrounds/types.ts
+++ b/tests/src/util/playgrounds/types.ts
@@ -26,7 +26,7 @@
 export interface ISubscribeBlockEventsData {
   number: number;
   hash: string;
-  timestamp: number; 
+  timestamp: number;
   events: IEvent[];
 }
 
@@ -56,7 +56,7 @@
   connected?: (...args: any[]) => any;
   disconnected?: (...args: any[]) => any;
   error?: (...args: any[]) => any;
-  ready?: (...args: any[]) => any; 
+  ready?: (...args: any[]) => any;
   decorated?: (...args: any[]) => any;
 }
 

--- a/tests/src/util/playgrounds/unique.dev.ts
+++ b/tests/src/util/playgrounds/unique.dev.ts
@@ -35,7 +35,7 @@
     this.consoleWarn = console.warn;
   }
 
-  enable() {  
+  enable() {
     const outFn = (printer: any) => (...args: any[]) => {
       for (const arg of args) {
         if (typeof arg !== 'string')
@@ -45,7 +45,7 @@
       }
       printer(...args);
     };
-  
+
     console.error = outFn(this.consoleErr.bind(console));
     console.log = outFn(this.consoleLog.bind(console));
     console.warn = outFn(this.consoleWarn.bind(console));
@@ -188,11 +188,11 @@
   }
 
   /**
-   * Generates accounts with the specified UNQ token balance 
+   * Generates accounts with the specified UNQ token balance
    * @param balances balances for generated accounts. Each balance will be multiplied by the token nominal.
    * @param donor donor account for balances
    * @returns array of newly created accounts
-   * @example const [acc1, acc2, acc3] = await createAccounts([0n, 10n, 20n], donor); 
+   * @example const [acc1, acc2, acc3] = await createAccounts([0n, 10n, 20n], donor);
    */
   createAccounts = async (balances: bigint[], donor: IKeyringPair): Promise<IKeyringPair[]> => {
     let nonce = await this.helper.chain.getNonce(donor.address);
@@ -212,7 +212,7 @@
     }
 
     await Promise.all(transactions).catch(_e => {});
-    
+
     //#region TODO remove this region, when nonce problem will be solved
     const checkBalances = async () => {
       let isSuccess = true;
@@ -242,7 +242,7 @@
   };
 
   // TODO combine this method and createAccounts into one
-  createCrowd = async (accountsToCreate: number, withBalance: bigint, donor: IKeyringPair): Promise<IKeyringPair[]> => {  
+  createCrowd = async (accountsToCreate: number, withBalance: bigint, donor: IKeyringPair): Promise<IKeyringPair[]> => {
     const createAsManyAsCan = async () => {
       let transactions: any = [];
       const accounts: IKeyringPair[] = [];
@@ -250,9 +250,9 @@
       const tokenNominal = this.helper.balance.getOneTokenNominal();
       for (let i = 0; i < accountsToCreate; i++) {
         if (i === 500) { // if there are too many accounts to create
-          await Promise.allSettled(transactions); // wait while first 500 (should be 100 for devnode) tx will be settled 
+          await Promise.allSettled(transactions); // wait while first 500 (should be 100 for devnode) tx will be settled
           transactions = []; //
-          nonce = await this.helper.chain.getNonce(donor.address); // update nonce 
+          nonce = await this.helper.chain.getNonce(donor.address); // update nonce
         }
         const recepient = this.helper.util.fromSeed(mnemonicGenerate());
         accounts.push(recepient);
@@ -262,7 +262,7 @@
           nonce++;
         }
       }
-      
+
       const fullfilledAccounts = [];
       await Promise.allSettled(transactions);
       for (const account of accounts) {
@@ -274,7 +274,7 @@
       return fullfilledAccounts;
     };
 
-    
+
     const crowd: IKeyringPair[] = [];
     // do up to 5 retries
     for (let index = 0; index < 5 && accountsToCreate !== 0; index++) {
@@ -291,7 +291,7 @@
   isDevNode = async () => {
     let blockNumber = (await this.helper.callRpc('api.query.system.number')).toJSON();
     if (blockNumber == 0) {
-      await this.helper.wait.newBlocks(1); 
+      await this.helper.wait.newBlocks(1);
       blockNumber = (await this.helper.callRpc('api.query.system.number')).toJSON();
     }
     const block2 = await this.helper.callRpc('api.rpc.chain.getBlock', [await this.helper.callRpc('api.rpc.chain.getBlockHash', [blockNumber])]);
@@ -310,15 +310,15 @@
     const block2date = await findCreationDate(block2);
     if(block2date! - block1date! < 9000) return true;
   };
-  
+
   async calculcateFee(payer: ICrossAccountId, promise: () => Promise<any>): Promise<bigint> {
     const address = payer.Substrate ? payer.Substrate : await this.helper.address.ethToSubstrate(payer.Ethereum!);
-    let balance = await this.helper.balance.getSubstrate(address); 
-    
+    let balance = await this.helper.balance.getSubstrate(address);
+
     await promise();
-    
+
     balance -= await this.helper.balance.getSubstrate(address);
-    
+
     return balance;
   }
 
@@ -335,7 +335,7 @@
 
       const scheduledId = '0x' + '0'.repeat(prefixSize) + hexId;
 
-      return scheduledId;  
+      return scheduledId;
     }
 
     const ids = [];
@@ -424,7 +424,7 @@
   /**
    * Wait for specified number of blocks
    * @param blocksCount number of blocks to wait
-   * @returns 
+   * @returns
    */
   async newBlocks(blocksCount = 1, timeout?: number): Promise<void> {
     timeout = timeout ?? blocksCount * 60_000;
@@ -457,7 +457,7 @@
     await this.waitWithTimeout(promise, timeout);
     return promise;
   }
-  
+
   async forRelayBlockNumber(blockNumber: bigint | number, timeout?: number) {
     timeout = timeout ?? 30 * 60 * 1000;
     // eslint-disable-next-line no-async-promise-executor
@@ -476,7 +476,7 @@
 
   noScheduledTasks() {
     const api = this.helper.getApi();
-    
+
     // eslint-disable-next-line no-async-promise-executor
     const promise = new Promise<void>(async resolve => {
       const unsubscribe = await api.rpc.chain.subscribeNewHeads(async () => {
@@ -486,7 +486,7 @@
           unsubscribe();
           resolve();
         }
-      }); 
+      });
     });
 
     return promise;
@@ -500,16 +500,16 @@
         const blockHash = header.hash;
         const eventIdStr = `${eventSection}.${eventMethod}`;
         const waitLimitStr = `wait blocks remaining: ${maxBlocksToWait}`;
-  
+
         this.helper.logger.log(`[Block #${blockNumber}] Waiting for event \`${eventIdStr}\` (${waitLimitStr})`);
-  
+
         const apiAt = await this.helper.getApi().at(blockHash);
         const eventRecords = (await apiAt.query.system.events()) as any;
-  
+
         const neededEvent = eventRecords.toArray().find((r: FrameSystemEventRecord) => {
           return r.event.section == eventSection && r.event.method == eventMethod;
         });
-  
+
         if (neededEvent) {
           unsubscribe();
           resolve(neededEvent);

--- a/tests/src/util/playgrounds/unique.ts
+++ b/tests/src/util/playgrounds/unique.ts
@@ -1103,7 +1103,7 @@
   async getPropertiesConsumedSpace(collectionId: number): Promise<number> {
     const api = this.helper.getApi();
     const props = (await api.query.common.collectionProperties(collectionId)).toJSON();
-        
+
     return (props! as any).consumedSpace;
   }
 
@@ -2423,7 +2423,7 @@
   /**
    * Get schedule for recepient of vested transfer
    * @param address Substrate address of recipient
-   * @returns 
+   * @returns
    */
   async getVestingSchedules(address: TSubstrateAccount): Promise<{start: bigint, period: bigint, periodCount: bigint, perPeriod: bigint}[]> {
     const schedule = (await this.helper.callRpc('api.query.vesting.vestingSchedules', [address])).toJSON();
@@ -2506,16 +2506,16 @@
       : typeof key === 'bigint'
         ? hexToU8a(key.toString(16))
         : key;
-  
+
     if (ss58Format < 0 || ss58Format > 16383 || [46, 47].includes(ss58Format)) {
       throw new Error(`ss58Format is not valid, received ${typeof ss58Format} "${ss58Format}"`);
     }
-  
+
     const allowedDecodedLengths = [1, 2, 4, 8, 32, 33];
     if (!allowedDecodedLengths.includes(u8a.length)) {
       throw new Error(`key length is not valid, received ${u8a.length}, valid values are ${allowedDecodedLengths.join(', ')}`);
     }
-  
+
     const u8aPrefix = ss58Format < 64
       ? new Uint8Array([ss58Format])
       : new Uint8Array([
@@ -2524,7 +2524,7 @@
       ]);
 
     const input = u8aConcat(u8aPrefix, u8a);
-  
+
     return base58Encode(u8aConcat(
       input,
       blake2AsU8a(input).subarray(0, [32, 33].includes(u8a.length) ? 2 : 1),
@@ -2556,7 +2556,7 @@
     if (ethCrossAccount.sub === '0') {
       return {Ethereum: ethCrossAccount.eth.toLocaleLowerCase()};
     }
-    
+
     const ss58 = this.restoreCrossAccountFromBigInt(BigInt(ethCrossAccount.sub));
     return {Substrate: ss58};
   }
@@ -3074,14 +3074,14 @@
 
     executeExtrinsic(sender: IKeyringPair, scheduledExtrinsic: string, scheduledParams: any[], expectSuccess?: boolean): Promise<ITransactionResult> {
       const scheduledTx = this.constructApiCall(scheduledExtrinsic, scheduledParams);
-      
+
       const mandatorySchedArgs = [
         this.blocksNum,
         this.options.periodic ? [this.options.periodic.period, this.options.periodic.repetitions] : null,
         this.options.priority ?? null,
         scheduledTx,
       ];
-      
+
       let schedArgs;
       let scheduleFn;
 
@@ -3301,7 +3301,7 @@
   async getTokenPropertiesConsumedSpace(tokenId: number): Promise<number> {
     const api = this.helper.getApi();
     const props = (await api.query.nonfungible.tokenProperties(this.collectionId, tokenId)).toJSON();
-        
+
     return (props! as any).consumedSpace;
   }
 
@@ -3419,7 +3419,7 @@
   async getTokenPropertiesConsumedSpace(tokenId: number): Promise<number> {
     const api = this.helper.getApi();
     const props = (await api.query.refungible.tokenProperties(this.collectionId, tokenId)).toJSON();
-        
+
     return (props! as any).consumedSpace;
   }
 

--- a/tests/src/vesting.test.ts
+++ b/tests/src/vesting.test.ts
@@ -73,7 +73,7 @@
     expect(balanceRecepient.feeFrozen).to.eq(250n * nominal);
     expect(balanceRecepient.miscFrozen).to.eq(250n * nominal);
     expect(balanceRecepient.reserved).to.eq(0n);
-    
+
     // Wait first schedule ends and first part od second schedule:
     await helper.wait.forRelayBlockNumber(SCHEDULE_2_START + SCHEDULE_2_PERIOD);
     await helper.balance.claim(recepient);
@@ -84,7 +84,7 @@
     expect(balanceRecepient.feeFrozen).to.eq(100n * nominal);
     expect(balanceRecepient.miscFrozen).to.eq(100n * nominal);
     expect(balanceRecepient.reserved).to.eq(0n);
-    
+
     // Schedules list contain 1 vesting:
     schedule = await helper.balance.getVestingSchedules(recepient.address);
     expect(schedule).to.has.length(1);
@@ -100,7 +100,7 @@
     expect(balanceRecepient.feeFrozen).to.eq(0n);
     expect(balanceRecepient.miscFrozen).to.eq(0n);
     expect(balanceRecepient.reserved).to.eq(0n);
-    
+
     // check sender balance does not changed:
     balanceSender = await helper.balance.getSubstrateFull(sender.address);
     expect(balanceSender.free / nominal).to.eq(699n);

--- a/tests/src/xcm/xcmOpal.test.ts
+++ b/tests/src/xcm/xcmOpal.test.ts
@@ -37,12 +37,12 @@
 const TRANSFER_AMOUNT = 1_000_000_000_000_000_000n;
 
 // 10,000.00 (ten thousands) USDT
-const ASSET_AMOUNT = 1_000_000_000_000_000_000_000n; 
+const ASSET_AMOUNT = 1_000_000_000_000_000_000_000n;
 
 describeXCM('[XCM] Integration test: Exchanging USDT with Westmint', () => {
   let alice: IKeyringPair;
   let bob: IKeyringPair;
-  
+
   let balanceStmnBefore: bigint;
   let balanceStmnAfter: bigint;
 
@@ -66,7 +66,7 @@
 
     await usingWestmintPlaygrounds(westmintUrl, async (helper) => {
       // 350.00 (three hundred fifty) DOT
-      const fundingAmount = 3_500_000_000_000n; 
+      const fundingAmount = 3_500_000_000_000n;
 
       await helper.assets.create(alice, ASSET_ID, alice.address, ASSET_METADATA_MINIMAL_BALANCE);
       await helper.assets.setMetadata(alice, ASSET_ID, ASSET_METADATA_NAME, ASSET_METADATA_DESCRIPTION, ASSET_METADATA_DECIMALS);
@@ -151,7 +151,7 @@
 
       await helper.xcm.limitedReserveTransferAssets(alice, destination, beneficiary, assets, feeAssetItem, 'Unlimited');
     });
-  
+
   });
 
   itSub('Should connect and send USDT from Westmint to Opal', async ({helper}) => {
@@ -190,7 +190,7 @@
                     },
                     {
                       GeneralIndex: ASSET_ID,
-                    }, 
+                    },
                   ]},
               },
             },
@@ -266,7 +266,7 @@
         },
         //10_000_000_000_000_000n,
         TRANSFER_AMOUNT,
-      ], 
+      ],
       [
         {
           NativeAssetId: 'Parent',
@@ -278,16 +278,16 @@
     const feeItem = 1;
 
     await helper.xTokens.transferMulticurrencies(alice, currencies, feeItem, destination, 'Unlimited');
-    
+
     // the commission has been paid in parachain native token
     balanceOpalFinal = await helper.balance.getSubstrate(alice.address);
     expect(balanceOpalAfter > balanceOpalFinal).to.be.true;
 
     await usingWestmintPlaygrounds(westmintUrl, async (helper) => {
       await helper.wait.newBlocks(3);
-      
+
       // The USDT token never paid fees. Its amount not changed from begin value.
-      // Also check that xcm transfer has been succeeded 
+      // Also check that xcm transfer has been succeeded
       expect((await helper.assets.account(ASSET_ID, alice.address))! == ASSET_AMOUNT).to.be.true;
     });
   });
@@ -341,13 +341,13 @@
 
       await helper.xcm.limitedReserveTransferAssets(bob, destination, beneficiary, assets, feeAssetItem, 'Unlimited');
     });
-  
+
     await helper.wait.newBlocks(3);
 
-    balanceBobAfter = await helper.balance.getSubstrate(bob.address);  
+    balanceBobAfter = await helper.balance.getSubstrate(bob.address);
     balanceBobRelayTokenAfter = await helper.tokens.accounts(bob.address, {NativeAssetId: 'Parent'});
 
-    const wndFee = balanceBobRelayTokenAfter - TRANSFER_AMOUNT_RELAY - balanceBobRelayTokenBefore; 
+    const wndFee = balanceBobRelayTokenAfter - TRANSFER_AMOUNT_RELAY - balanceBobRelayTokenBefore;
     console.log(
       'Relay (Westend) to Opal transaction fees: %s OPL',
       helper.util.bigIntToDecimals(balanceBobAfter - balanceBobBefore),

--- a/tests/src/xcm/xcmQuartz.test.ts
+++ b/tests/src/xcm/xcmQuartz.test.ts
@@ -38,7 +38,7 @@
 
 const TRANSFER_AMOUNT = 2000000000000000000000000n;
 
-const FUNDING_AMOUNT = 3_500_000_0000_000_000n; 
+const FUNDING_AMOUNT = 3_500_000_0000_000_000n;
 
 const TRANSFER_AMOUNT_RELAY = 50_000_000_000_000_000n;
 
@@ -52,7 +52,7 @@
 describeXCM('[XCM] Integration test: Exchanging USDT with Statemine', () => {
   let alice: IKeyringPair;
   let bob: IKeyringPair;
-  
+
   let balanceStmnBefore: bigint;
   let balanceStmnAfter: bigint;
 
@@ -81,7 +81,7 @@
     });
 
     await usingStateminePlaygrounds(statemineUrl, async (helper) => {
-      const sovereignFundingAmount = 3_500_000_000n; 
+      const sovereignFundingAmount = 3_500_000_000n;
 
       await helper.assets.create(
         alice,
@@ -185,7 +185,7 @@
 
       await helper.xcm.limitedReserveTransferAssets(alice, destination, beneficiary, assets, feeAssetItem, 'Unlimited');
     });
-  
+
   });
 
   itSub('Should connect and send USDT from Statemine to Quartz', async ({helper}) => {
@@ -224,7 +224,7 @@
                     },
                     {
                       GeneralIndex: USDT_ASSET_ID,
-                    }, 
+                    },
                   ]},
               },
             },
@@ -267,7 +267,7 @@
     console.log(
       '[Statemine -> Quartz] transaction fees on Quartz: %s QTZ',
       helper.util.bigIntToDecimals(balanceQuartzAfter - balanceQuartzBefore),
-    );    
+    );
     // commission has not paid in USDT token
     expect(free).to.be.equal(TRANSFER_AMOUNT);
     // ... and parachain native token
@@ -299,7 +299,7 @@
           ForeignAssetId: 0,
         },
         TRANSFER_AMOUNT,
-      ], 
+      ],
       [
         {
           NativeAssetId: 'Parent',
@@ -311,7 +311,7 @@
     const feeItem = 1;
 
     await helper.xTokens.transferMulticurrencies(alice, currencies, feeItem, destination, 'Unlimited');
-    
+
     // the commission has been paid in parachain native token
     balanceQuartzFinal = await helper.balance.getSubstrate(alice.address);
     console.log('[Quartz -> Statemine] transaction fees on Quartz: %s QTZ', helper.util.bigIntToDecimals(balanceQuartzFinal - balanceQuartzAfter));
@@ -319,9 +319,9 @@
 
     await usingStateminePlaygrounds(statemineUrl, async (helper) => {
       await helper.wait.newBlocks(3);
-      
+
       // The USDT token never paid fees. Its amount not changed from begin value.
-      // Also check that xcm transfer has been succeeded 
+      // Also check that xcm transfer has been succeeded
       expect((await helper.assets.account(USDT_ASSET_ID, alice.address))! == USDT_ASSET_AMOUNT).to.be.true;
     });
   });
@@ -372,10 +372,10 @@
 
       await helper.xcm.limitedReserveTransferAssets(bob, destination, beneficiary, assets, feeAssetItem, 'Unlimited');
     });
-  
+
     await helper.wait.newBlocks(3);
 
-    balanceBobAfter = await helper.balance.getSubstrate(bob.address);  
+    balanceBobAfter = await helper.balance.getSubstrate(bob.address);
     balanceBobRelayTokenAfter = await helper.tokens.accounts(bob.address, {NativeAssetId: 'Parent'});
 
     const wndFeeOnQuartz = balanceBobRelayTokenAfter - TRANSFER_AMOUNT_RELAY - balanceBobRelayTokenBefore;

--- a/tests/src/xcm/xcmUnique.test.ts
+++ b/tests/src/xcm/xcmUnique.test.ts
@@ -38,7 +38,7 @@
 
 const TRANSFER_AMOUNT = 2000000000000000000000000n;
 
-const FUNDING_AMOUNT = 3_500_000_0000_000_000n; 
+const FUNDING_AMOUNT = 3_500_000_0000_000_000n;
 
 const TRANSFER_AMOUNT_RELAY = 50_000_000_000_000_000n;
 
@@ -52,7 +52,7 @@
 describeXCM('[XCM] Integration test: Exchanging USDT with Statemint', () => {
   let alice: IKeyringPair;
   let bob: IKeyringPair;
-  
+
   let balanceStmnBefore: bigint;
   let balanceStmnAfter: bigint;
 
@@ -81,7 +81,7 @@
     });
 
     await usingStatemintPlaygrounds(statemintUrl, async (helper) => {
-      const sovereignFundingAmount = 3_500_000_000n; 
+      const sovereignFundingAmount = 3_500_000_000n;
 
       await helper.assets.create(
         alice,
@@ -185,7 +185,7 @@
 
       await helper.xcm.limitedReserveTransferAssets(alice, destination, beneficiary, assets, feeAssetItem, 'Unlimited');
     });
-  
+
   });
 
   itSub('Should connect and send USDT from Statemint to Unique', async ({helper}) => {
@@ -224,7 +224,7 @@
                     },
                     {
                       GeneralIndex: USDT_ASSET_ID,
-                    }, 
+                    },
                   ]},
               },
             },
@@ -267,7 +267,7 @@
     console.log(
       '[Statemint -> Unique] transaction fees on Unique: %s UNQ',
       helper.util.bigIntToDecimals(balanceUniqueAfter - balanceUniqueBefore),
-    );    
+    );
     // commission has not paid in USDT token
     expect(free).to.be.equal(TRANSFER_AMOUNT);
     // ... and parachain native token
@@ -299,7 +299,7 @@
           ForeignAssetId: 0,
         },
         TRANSFER_AMOUNT,
-      ], 
+      ],
       [
         {
           NativeAssetId: 'Parent',
@@ -311,7 +311,7 @@
     const feeItem = 1;
 
     await helper.xTokens.transferMulticurrencies(alice, currencies, feeItem, destination, 'Unlimited');
-    
+
     // the commission has been paid in parachain native token
     balanceUniqueFinal = await helper.balance.getSubstrate(alice.address);
     console.log('[Unique -> Statemint] transaction fees on Unique: %s UNQ', helper.util.bigIntToDecimals(balanceUniqueFinal - balanceUniqueAfter));
@@ -319,9 +319,9 @@
 
     await usingStatemintPlaygrounds(statemintUrl, async (helper) => {
       await helper.wait.newBlocks(3);
-      
+
       // The USDT token never paid fees. Its amount not changed from begin value.
-      // Also check that xcm transfer has been succeeded 
+      // Also check that xcm transfer has been succeeded
       expect((await helper.assets.account(USDT_ASSET_ID, alice.address))! == USDT_ASSET_AMOUNT).to.be.true;
     });
   });
@@ -372,10 +372,10 @@
 
       await helper.xcm.limitedReserveTransferAssets(bob, destination, beneficiary, assets, feeAssetItem, 'Unlimited');
     });
-  
+
     await helper.wait.newBlocks(3);
 
-    balanceBobAfter = await helper.balance.getSubstrate(bob.address);  
+    balanceBobAfter = await helper.balance.getSubstrate(bob.address);
     balanceBobRelayTokenAfter = await helper.tokens.accounts(bob.address, {NativeAssetId: 'Parent'});
 
     const wndFeeOnUnique = balanceBobRelayTokenAfter - TRANSFER_AMOUNT_RELAY - balanceBobRelayTokenBefore;
@@ -909,7 +909,7 @@
       const unqRandomAccountAsset = await helper.assets.account(assetId, randomAccountMoonbeam.address);
 
       expect(unqRandomAccountAsset).to.be.null;
-      
+
       balanceForeignUnqTokenFinal = 0n;
 
       const unqOutcomeTransfer = balanceForeignUnqTokenMiddle - balanceForeignUnqTokenFinal;

--- a/tests/yarn.lock
+++ b/tests/yarn.lock
@@ -1065,7 +1065,7 @@
   dependencies:
     "@types/node" "*"
 
-"@typescript-eslint/eslint-plugin@^5.40.1":
+"@typescript-eslint/eslint-plugin@^5.47.0":
   version "5.47.0"
   resolved "https://registry.yarnpkg.com/@typescript-eslint/eslint-plugin/-/eslint-plugin-5.47.0.tgz#dadb79df3b0499699b155839fd6792f16897d910"
   integrity sha512-AHZtlXAMGkDmyLuLZsRpH3p4G/1iARIwc/T0vIem2YB+xW6pZaXYXzCBnZSF/5fdM97R9QqZWZ+h3iW10XgevQ==
@@ -1080,7 +1080,7 @@
     semver "^7.3.7"
     tsutils "^3.21.0"
 
-"@typescript-eslint/parser@^5.40.1":
+"@typescript-eslint/parser@^5.47.0":
   version "5.47.0"
   resolved "https://registry.yarnpkg.com/@typescript-eslint/parser/-/parser-5.47.0.tgz#62e83de93499bf4b500528f74bf2e0554e3a6c8d"
   integrity sha512-udPU4ckK+R1JWCGdQC4Qa27NtBg7w020ffHqGyAK8pAgOVuNw7YaKXGChk+udh+iiGIJf6/E/0xhVXyPAbsczw==