git.delta.rocks / unique-network / refs/commits / 509c8280fa0c

difftreelog

Merge pull request #426 from UniqueNetwork/feature/token_owners

Yaroslav Bolyukin2022-07-22parents: #c2a34ed #10fad85.patch.diff
in: master

31 files changed

modifiedCargo.lockdiffbeforeafterboth
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -5953,7 +5953,7 @@
 
 [[package]]
 name = "pallet-fungible"
-version = "0.1.0"
+version = "0.1.1"
 dependencies = [
  "ethereum",
  "evm-coder",
@@ -6198,7 +6198,7 @@
 
 [[package]]
 name = "pallet-nonfungible"
-version = "0.1.0"
+version = "0.1.1"
 dependencies = [
  "ethereum",
  "evm-coder",
@@ -12377,7 +12377,7 @@
 
 [[package]]
 name = "uc-rpc"
-version = "0.1.0"
+version = "0.1.1"
 dependencies = [
  "anyhow",
  "jsonrpsee",
@@ -12682,7 +12682,7 @@
 
 [[package]]
 name = "unique-runtime-common"
-version = "0.9.24"
+version = "0.9.25"
 dependencies = [
  "evm-coder",
  "fp-rpc",
@@ -12754,7 +12754,7 @@
 
 [[package]]
 name = "up-rpc"
-version = "0.1.0"
+version = "0.1.1"
 dependencies = [
  "pallet-common",
  "pallet-evm",
addedclient/rpc/CHANGELOG.mddiffbeforeafterboth
--- /dev/null
+++ b/client/rpc/CHANGELOG.md
@@ -0,0 +1,11 @@
+# Change Log
+
+All notable changes to this project will be documented in this file.
+
+## [0.1.1] - 2022-07-14
+
+### Added
+
+ - Implementation of RPC method `token_owners` returning 10 owners in no particular order.
+    This was an internal request to improve the web interface and support fractionalization event. 
+ 
\ No newline at end of file
modifiedclient/rpc/Cargo.tomldiffbeforeafterboth
--- a/client/rpc/Cargo.toml
+++ b/client/rpc/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "uc-rpc"
-version = "0.1.0"
+version = "0.1.1"
 license = "GPLv3"
 edition = "2021"
 
modifiedclient/rpc/src/lib.rsdiffbeforeafterboth
--- a/client/rpc/src/lib.rs
+++ b/client/rpc/src/lib.rs
@@ -70,6 +70,16 @@
 		token: TokenId,
 		at: Option<BlockHash>,
 	) -> Result<Option<CrossAccountId>>;
+
+	/// Returns 10 tokens owners in no particular order.
+	#[method(name = "unique_tokenOwners")]
+	fn token_owners(
+		&self,
+		collection: CollectionId,
+		token: TokenId,
+		at: Option<BlockHash>,
+	) -> Result<Vec<CrossAccountId>>;
+
 	#[method(name = "unique_topmostTokenOwner")]
 	fn topmost_token_owner(
 		&self,
@@ -473,6 +483,7 @@
 	pass_method!(next_sponsored(collection: CollectionId, account: CrossAccountId, token: TokenId) -> Option<u64>, unique_api);
 	pass_method!(effective_collection_limits(collection_id: CollectionId) -> Option<CollectionLimits>, unique_api);
 	pass_method!(total_pieces(collection_id: CollectionId, token_id: TokenId) -> Option<u128>, unique_api);
+	pass_method!(token_owners(collection: CollectionId, token: TokenId) -> Vec<CrossAccountId>, unique_api);
 }
 
 #[allow(deprecated)]
addedpallets/common/CHANGELOG.mddiffbeforeafterboth
--- /dev/null
+++ b/pallets/common/CHANGELOG.md
@@ -0,0 +1,12 @@
+# Change Log
+
+All notable changes to this project will be documented in this file.
+
+## [0.1.1] - 2022-07-14
+
+### Added
+
+ - Implementation of RPC method `token_owners` returning 10 owners in no particular order.
+    This was an internal request to improve the web interface and support fractionalization event. 
+
+ 
\ No newline at end of file
modifiedpallets/common/src/lib.rsdiffbeforeafterboth
--- a/pallets/common/src/lib.rs
+++ b/pallets/common/src/lib.rs
@@ -1748,6 +1748,11 @@
 	/// * `token` - The token for which you need to find out the owner.
 	fn token_owner(&self, token: TokenId) -> Option<T::CrossAccountId>;
 
+	/// Returns 10 tokens owners in no particular order.
+	///
+	/// * `token` - The token for which you need to find out the owners.
+	fn token_owners(&self, token: TokenId) -> Vec<T::CrossAccountId>;
+
 	/// Get the value of the token property by key.
 	///
 	/// * `token` - Token with the property to get.
addedpallets/fungible/CHANGELOG.mddiffbeforeafterboth
--- /dev/null
+++ b/pallets/fungible/CHANGELOG.md
@@ -0,0 +1,13 @@
+# Change Log
+
+All notable changes to this project will be documented in this file.
+
+## [0.1.1] - 2022-07-14
+
+### Added
+
+ - Implementation of RPC method `token_owners` returning 10 owners in no particular order.
+    This was an internal request to improve the web interface and support fractionalization event. 
+    
+ 
+ 
\ No newline at end of file
modifiedpallets/fungible/Cargo.tomldiffbeforeafterboth
--- a/pallets/fungible/Cargo.toml
+++ b/pallets/fungible/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "pallet-fungible"
-version = "0.1.0"
+version = "0.1.1"
 license = "GPLv3"
 edition = "2021"
 
modifiedpallets/fungible/src/common.rsdiffbeforeafterboth
--- a/pallets/fungible/src/common.rs
+++ b/pallets/fungible/src/common.rs
@@ -362,6 +362,11 @@
 		None
 	}
 
+	/// Returns 10 tokens owners in no particular order.
+	fn token_owners(&self, token: TokenId) -> Vec<T::CrossAccountId> {
+		<Pallet<T>>::token_owners(self.id, token).unwrap_or_default()
+	}
+
 	fn token_property(&self, _token_id: TokenId, _key: &PropertyKey) -> Option<PropertyValue> {
 		None
 	}
modifiedpallets/fungible/src/lib.rsdiffbeforeafterboth
--- a/pallets/fungible/src/lib.rs
+++ b/pallets/fungible/src/lib.rs
@@ -95,7 +95,7 @@
 use pallet_evm_coder_substrate::WithRecorder;
 use sp_core::H160;
 use sp_runtime::{ArithmeticError, DispatchError, DispatchResult};
-use sp_std::{collections::btree_map::BTreeMap};
+use sp_std::{collections::btree_map::BTreeMap, vec::Vec};
 
 pub use pallet::*;
 
@@ -613,4 +613,26 @@
 			nesting_budget,
 		)
 	}
+
+	/// Returns 10 tokens owners in no particular order
+	///
+	/// There is no direct way to get token holders in ascending order,
+	/// since `iter_prefix` returns values in no particular order.
+	/// Therefore, getting the 10 largest holders with a large value of holders
+	/// can lead to impact memory allocation + sorting with  `n * log (n)`.
+	pub fn token_owners(
+		collection: CollectionId,
+		_token: TokenId,
+	) -> Option<Vec<T::CrossAccountId>> {
+		let res: Vec<T::CrossAccountId> = <Balance<T>>::iter_prefix((collection,))
+			.map(|(owner, _amount)| owner)
+			.take(10)
+			.collect();
+
+		if res.is_empty() {
+			None
+		} else {
+			Some(res)
+		}
+	}
 }
addedpallets/nonfungible/CHANGELOG.mddiffbeforeafterboth
--- /dev/null
+++ b/pallets/nonfungible/CHANGELOG.md
@@ -0,0 +1,11 @@
+# Change Log
+
+All notable changes to this project will be documented in this file.
+
+## [0.1.1] - 2022-07-14
+
+### Added
+
+- Implementation of RPC method `token_owners`.
+   For reasons of compatibility with this pallet, returns only one owner if token exists.
+   This was an internal request to improve the web interface and support fractionalization event. 
\ No newline at end of file
modifiedpallets/nonfungible/Cargo.tomldiffbeforeafterboth
--- a/pallets/nonfungible/Cargo.toml
+++ b/pallets/nonfungible/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "pallet-nonfungible"
-version = "0.1.0"
+version = "0.1.1"
 license = "GPLv3"
 edition = "2021"
 
modifiedpallets/nonfungible/src/common.rsdiffbeforeafterboth
--- a/pallets/nonfungible/src/common.rs
+++ b/pallets/nonfungible/src/common.rs
@@ -26,7 +26,7 @@
 	weights::WeightInfo as _,
 };
 use sp_runtime::DispatchError;
-use sp_std::vec::Vec;
+use sp_std::{vec::Vec, vec};
 
 use crate::{
 	AccountBalance, Allowance, Config, CreateItemData, Error, NonfungibleHandle, Owned, Pallet,
@@ -422,6 +422,11 @@
 		<TokenData<T>>::get((self.id, token)).map(|t| t.owner)
 	}
 
+	/// Returns token owners.
+	fn token_owners(&self, token: TokenId) -> Vec<T::CrossAccountId> {
+		self.token_owner(token).map_or_else(|| vec![], |t| vec![t])
+	}
+
 	fn token_property(&self, token_id: TokenId, key: &PropertyKey) -> Option<PropertyValue> {
 		<Pallet<T>>::token_properties((self.id, token_id))
 			.get(key)
modifiedpallets/refungible/CHANGELOG.mddiffbeforeafterboth
--- a/pallets/refungible/CHANGELOG.md
+++ b/pallets/refungible/CHANGELOG.md
@@ -1,6 +1,18 @@
-## v0.1.2 - 2022-07
+# Change Log
 
-### Refungible Pallet
+All notable changes to this project will be documented in this file.
 
+## [v0.1.2] - 2022-07-14
+
+### Other changes
+
 feat(refungible-pallet): add ERC-20 EVM API for RFT token pieces ([#413](https://github.com/UniqueNetwork/unique-chain/pull/413))
-test(refungible-pallet): add tests for ERC-20 EVM API for RFT token pieces ([#413](https://github.com/UniqueNetwork/unique-chain/pull/413))
\ No newline at end of file
+test(refungible-pallet): add tests for ERC-20 EVM API for RFT token pieces ([#413](https://github.com/UniqueNetwork/unique-chain/pull/413))
+
+## [v0.1.1] - 2022-07-14
+
+### Other changes
+
+- feat: RPC method `token_owners` returning 10 owners in no particular order.
+
+This was an internal request to improve the web interface and support fractionalization event. 
modifiedpallets/refungible/src/common.rsdiffbeforeafterboth
before · pallets/refungible/src/common.rs
1// Copyright 2019-2022 Unique Network (Gibraltar) Ltd.2// This file is part of Unique Network.34// Unique Network is free software: you can redistribute it and/or modify5// it under the terms of the GNU General Public License as published by6// the Free Software Foundation, either version 3 of the License, or7// (at your option) any later version.89// Unique Network is distributed in the hope that it will be useful,10// but WITHOUT ANY WARRANTY; without even the implied warranty of11// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the12// GNU General Public License for more details.1314// You should have received a copy of the GNU General Public License15// along with Unique Network. If not, see <http://www.gnu.org/licenses/>.1617use core::marker::PhantomData;1819use sp_std::collections::btree_map::BTreeMap;20use frame_support::{dispatch::DispatchResultWithPostInfo, ensure, fail, weights::Weight, traits::Get};21use up_data_structs::{22	CollectionId, TokenId, CreateItemExData, CreateRefungibleExData, budget::Budget, Property,23	PropertyKey, PropertyValue, PropertyKeyPermission, CreateItemData, CollectionPropertiesVec,24};25use pallet_common::{26	CommonCollectionOperations, CommonWeightInfo, RefungibleExtensions, with_weight,27	weights::WeightInfo as _,28};29use pallet_structure::Error as StructureError;30use sp_runtime::{DispatchError};31use sp_std::{vec::Vec, vec};3233use crate::{34	AccountBalance, Allowance, Balance, Config, Error, Owned, Pallet, RefungibleHandle,35	SelfWeightOf, TokenData, weights::WeightInfo, TokensMinted,36};3738macro_rules! max_weight_of {39	($($method:ident ($($args:tt)*)),*) => {40		041		$(42			.max(<SelfWeightOf<T>>::$method($($args)*))43		)*44	};45}4647fn properties_weight<T: Config>(properties: &CollectionPropertiesVec) -> u64 {48	if properties.len() > 0 {49		<CommonWeights<T>>::set_token_properties(properties.len() as u32)50	} else {51		052	}53}5455pub struct CommonWeights<T: Config>(PhantomData<T>);56impl<T: Config> CommonWeightInfo<T::CrossAccountId> for CommonWeights<T> {57	fn create_item() -> Weight {58		<SelfWeightOf<T>>::create_item()59	}6061	fn create_multiple_items(data: &[CreateItemData]) -> Weight {62		<SelfWeightOf<T>>::create_multiple_items(data.len() as u32).saturating_add(63			data.iter()64				.map(|data| match data {65					CreateItemData::ReFungible(rft_data) => {66						properties_weight::<T>(&rft_data.properties)67					}68					_ => 0,69				})70				.fold(0, |a, b| a.saturating_add(b)),71		)72	}7374	fn create_multiple_items_ex(call: &CreateItemExData<T::CrossAccountId>) -> Weight {75		match call {76			CreateItemExData::RefungibleMultipleOwners(i) => {77				<SelfWeightOf<T>>::create_multiple_items_ex_multiple_owners(i.users.len() as u32)78					.saturating_add(properties_weight::<T>(&i.properties))79			}80			CreateItemExData::RefungibleMultipleItems(i) => {81				<SelfWeightOf<T>>::create_multiple_items_ex_multiple_items(i.len() as u32)82					.saturating_add(83						i.iter()84							.map(|d| properties_weight::<T>(&d.properties))85							.fold(0, |a, b| a.saturating_add(b)),86					)87			}88			_ => 0,89		}90	}9192	fn burn_item() -> Weight {93		max_weight_of!(burn_item_partial(), burn_item_fully())94	}9596	fn set_collection_properties(amount: u32) -> Weight {97		<pallet_common::SelfWeightOf<T>>::set_collection_properties(amount)98	}99100	fn delete_collection_properties(amount: u32) -> Weight {101		<pallet_common::SelfWeightOf<T>>::delete_collection_properties(amount)102	}103104	fn set_token_properties(amount: u32) -> Weight {105		<SelfWeightOf<T>>::set_token_properties(amount)106	}107108	fn delete_token_properties(amount: u32) -> Weight {109		<SelfWeightOf<T>>::delete_token_properties(amount)110	}111112	fn set_token_property_permissions(amount: u32) -> Weight {113		<SelfWeightOf<T>>::set_token_property_permissions(amount)114	}115116	fn transfer() -> Weight {117		max_weight_of!(118			transfer_normal(),119			transfer_creating(),120			transfer_removing(),121			transfer_creating_removing()122		)123	}124125	fn approve() -> Weight {126		<SelfWeightOf<T>>::approve()127	}128129	fn transfer_from() -> Weight {130		max_weight_of!(131			transfer_from_normal(),132			transfer_from_creating(),133			transfer_from_removing(),134			transfer_from_creating_removing()135		)136	}137138	fn burn_from() -> Weight {139		<SelfWeightOf<T>>::burn_from()140	}141142	fn burn_recursively_self_raw() -> Weight {143		// Read to get total balance144		Self::burn_item() + T::DbWeight::get().reads(1)145	}146	fn burn_recursively_breadth_raw(_amount: u32) -> Weight {147		// Refungible token can't have children148		0149	}150}151152fn map_create_data<T: Config>(153	data: up_data_structs::CreateItemData,154	to: &T::CrossAccountId,155) -> Result<CreateRefungibleExData<T::CrossAccountId>, DispatchError> {156	match data {157		up_data_structs::CreateItemData::ReFungible(data) => Ok(CreateRefungibleExData {158			const_data: data.const_data,159			users: {160				let mut out = BTreeMap::new();161				out.insert(to.clone(), data.pieces);162				out.try_into().expect("limit > 0")163			},164			properties: data.properties,165		}),166		_ => fail!(<Error<T>>::NotRefungibleDataUsedToMintFungibleCollectionToken),167	}168}169170/// Implementation of `CommonCollectionOperations` for `RefungibleHandle`. It wraps Refungible Pallete171/// methods and adds weight info.172impl<T: Config> CommonCollectionOperations<T> for RefungibleHandle<T> {173	fn create_item(174		&self,175		sender: T::CrossAccountId,176		to: T::CrossAccountId,177		data: up_data_structs::CreateItemData,178		nesting_budget: &dyn Budget,179	) -> DispatchResultWithPostInfo {180		with_weight(181			<Pallet<T>>::create_item(182				self,183				&sender,184				map_create_data::<T>(data, &to)?,185				nesting_budget,186			),187			<CommonWeights<T>>::create_item(),188		)189	}190191	fn create_multiple_items(192		&self,193		sender: T::CrossAccountId,194		to: T::CrossAccountId,195		data: Vec<up_data_structs::CreateItemData>,196		nesting_budget: &dyn Budget,197	) -> DispatchResultWithPostInfo {198		let weight = <CommonWeights<T>>::create_multiple_items(&data);199		let data = data200			.into_iter()201			.map(|d| map_create_data::<T>(d, &to))202			.collect::<Result<Vec<_>, DispatchError>>()?;203204		with_weight(205			<Pallet<T>>::create_multiple_items(self, &sender, data, nesting_budget),206			weight,207		)208	}209210	fn create_multiple_items_ex(211		&self,212		sender: <T>::CrossAccountId,213		data: CreateItemExData<T::CrossAccountId>,214		nesting_budget: &dyn Budget,215	) -> DispatchResultWithPostInfo {216		let weight = <CommonWeights<T>>::create_multiple_items_ex(&data);217		let data = match data {218			CreateItemExData::RefungibleMultipleOwners(r) => vec![r],219			CreateItemExData::RefungibleMultipleItems(r)220				if r.iter().all(|i| i.users.len() == 1) =>221			{222				r.into_inner()223			}224			_ => fail!(<Error<T>>::NotRefungibleDataUsedToMintFungibleCollectionToken),225		};226227		with_weight(228			<Pallet<T>>::create_multiple_items(self, &sender, data, nesting_budget),229			weight,230		)231	}232233	fn burn_item(234		&self,235		sender: T::CrossAccountId,236		token: TokenId,237		amount: u128,238	) -> DispatchResultWithPostInfo {239		with_weight(240			<Pallet<T>>::burn(self, &sender, token, amount),241			<CommonWeights<T>>::burn_item(),242		)243	}244245	fn burn_item_recursively(246		&self,247		sender: T::CrossAccountId,248		token: TokenId,249		self_budget: &dyn Budget,250		_breadth_budget: &dyn Budget,251	) -> DispatchResultWithPostInfo {252		ensure!(self_budget.consume(), <StructureError<T>>::DepthLimit,);253		with_weight(254			<Pallet<T>>::burn(255				self,256				&sender,257				token,258				<Balance<T>>::get((self.id, token, &sender)),259			),260			<CommonWeights<T>>::burn_recursively_self_raw(),261		)262	}263264	fn transfer(265		&self,266		from: T::CrossAccountId,267		to: T::CrossAccountId,268		token: TokenId,269		amount: u128,270		nesting_budget: &dyn Budget,271	) -> DispatchResultWithPostInfo {272		with_weight(273			<Pallet<T>>::transfer(self, &from, &to, token, amount, nesting_budget),274			<CommonWeights<T>>::transfer(),275		)276	}277278	fn approve(279		&self,280		sender: T::CrossAccountId,281		spender: T::CrossAccountId,282		token: TokenId,283		amount: u128,284	) -> DispatchResultWithPostInfo {285		with_weight(286			<Pallet<T>>::set_allowance(self, &sender, &spender, token, amount),287			<CommonWeights<T>>::approve(),288		)289	}290291	fn transfer_from(292		&self,293		sender: T::CrossAccountId,294		from: T::CrossAccountId,295		to: T::CrossAccountId,296		token: TokenId,297		amount: u128,298		nesting_budget: &dyn Budget,299	) -> DispatchResultWithPostInfo {300		with_weight(301			<Pallet<T>>::transfer_from(self, &sender, &from, &to, token, amount, nesting_budget),302			<CommonWeights<T>>::transfer_from(),303		)304	}305306	fn burn_from(307		&self,308		sender: T::CrossAccountId,309		from: T::CrossAccountId,310		token: TokenId,311		amount: u128,312		nesting_budget: &dyn Budget,313	) -> DispatchResultWithPostInfo {314		with_weight(315			<Pallet<T>>::burn_from(self, &sender, &from, token, amount, nesting_budget),316			<CommonWeights<T>>::burn_from(),317		)318	}319320	fn set_collection_properties(321		&self,322		sender: T::CrossAccountId,323		properties: Vec<Property>,324	) -> DispatchResultWithPostInfo {325		let weight = <CommonWeights<T>>::set_collection_properties(properties.len() as u32);326327		with_weight(328			<Pallet<T>>::set_collection_properties(self, &sender, properties),329			weight,330		)331	}332333	fn delete_collection_properties(334		&self,335		sender: &T::CrossAccountId,336		property_keys: Vec<PropertyKey>,337	) -> DispatchResultWithPostInfo {338		let weight = <CommonWeights<T>>::delete_collection_properties(property_keys.len() as u32);339340		with_weight(341			<Pallet<T>>::delete_collection_properties(self, sender, property_keys),342			weight,343		)344	}345346	fn set_token_properties(347		&self,348		sender: T::CrossAccountId,349		token_id: TokenId,350		properties: Vec<Property>,351		nesting_budget: &dyn Budget,352	) -> DispatchResultWithPostInfo {353		let weight = <CommonWeights<T>>::set_token_properties(properties.len() as u32);354355		with_weight(356			<Pallet<T>>::set_token_properties(357				self,358				&sender,359				token_id,360				properties.into_iter(),361				false,362				nesting_budget,363			),364			weight,365		)366	}367368	fn set_token_property_permissions(369		&self,370		sender: &T::CrossAccountId,371		property_permissions: Vec<PropertyKeyPermission>,372	) -> DispatchResultWithPostInfo {373		let weight =374			<CommonWeights<T>>::set_token_property_permissions(property_permissions.len() as u32);375376		with_weight(377			<Pallet<T>>::set_token_property_permissions(self, sender, property_permissions),378			weight,379		)380	}381382	fn delete_token_properties(383		&self,384		sender: T::CrossAccountId,385		token_id: TokenId,386		property_keys: Vec<PropertyKey>,387		nesting_budget: &dyn Budget,388	) -> DispatchResultWithPostInfo {389		let weight = <CommonWeights<T>>::delete_token_properties(property_keys.len() as u32);390391		with_weight(392			<Pallet<T>>::delete_token_properties(393				self,394				&sender,395				token_id,396				property_keys.into_iter(),397				nesting_budget,398			),399			weight,400		)401	}402403	fn check_nesting(404		&self,405		_sender: <T>::CrossAccountId,406		_from: (CollectionId, TokenId),407		_under: TokenId,408		_nesting_budget: &dyn Budget,409	) -> sp_runtime::DispatchResult {410		fail!(<Error<T>>::RefungibleDisallowsNesting)411	}412413	fn nest(&self, _under: TokenId, _to_nest: (CollectionId, TokenId)) {}414415	fn unnest(&self, _under: TokenId, _to_nest: (CollectionId, TokenId)) {}416417	fn account_tokens(&self, account: T::CrossAccountId) -> Vec<TokenId> {418		<Owned<T>>::iter_prefix((self.id, account))419			.map(|(id, _)| id)420			.collect()421	}422423	fn collection_tokens(&self) -> Vec<TokenId> {424		<TokenData<T>>::iter_prefix((self.id,))425			.map(|(id, _)| id)426			.collect()427	}428429	fn token_exists(&self, token: TokenId) -> bool {430		<Pallet<T>>::token_exists(self, token)431	}432433	fn last_token_id(&self) -> TokenId {434		TokenId(<TokensMinted<T>>::get(self.id))435	}436437	fn token_owner(&self, token: TokenId) -> Option<T::CrossAccountId> {438		<Pallet<T>>::token_owner(self.id, token)439	}440441	fn token_property(&self, _token_id: TokenId, _key: &PropertyKey) -> Option<PropertyValue> {442		None443	}444445	fn token_properties(446		&self,447		_token_id: TokenId,448		_keys: Option<Vec<PropertyKey>>,449	) -> Vec<Property> {450		Vec::new()451	}452453	fn total_supply(&self) -> u32 {454		<Pallet<T>>::total_supply(self)455	}456457	fn account_balance(&self, account: T::CrossAccountId) -> u32 {458		<AccountBalance<T>>::get((self.id, account))459	}460461	fn balance(&self, account: T::CrossAccountId, token: TokenId) -> u128 {462		<Balance<T>>::get((self.id, token, account))463	}464465	fn allowance(466		&self,467		sender: T::CrossAccountId,468		spender: T::CrossAccountId,469		token: TokenId,470	) -> u128 {471		<Allowance<T>>::get((self.id, token, sender, spender))472	}473474	fn refungible_extensions(&self) -> Option<&dyn RefungibleExtensions<T>> {475		Some(self)476	}477478	fn total_pieces(&self, token: TokenId) -> Option<u128> {479		<Pallet<T>>::total_pieces(self.id, token)480	}481}482483impl<T: Config> RefungibleExtensions<T> for RefungibleHandle<T> {484	fn repartition(485		&self,486		owner: &T::CrossAccountId,487		token: TokenId,488		amount: u128,489	) -> DispatchResultWithPostInfo {490		with_weight(491			<Pallet<T>>::repartition(self, owner, token, amount),492			<SelfWeightOf<T>>::repartition_item(),493		)494	}495}
after · pallets/refungible/src/common.rs
1// Copyright 2019-2022 Unique Network (Gibraltar) Ltd.2// This file is part of Unique Network.34// Unique Network is free software: you can redistribute it and/or modify5// it under the terms of the GNU General Public License as published by6// the Free Software Foundation, either version 3 of the License, or7// (at your option) any later version.89// Unique Network is distributed in the hope that it will be useful,10// but WITHOUT ANY WARRANTY; without even the implied warranty of11// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the12// GNU General Public License for more details.1314// You should have received a copy of the GNU General Public License15// along with Unique Network. If not, see <http://www.gnu.org/licenses/>.1617use core::marker::PhantomData;1819use sp_std::collections::btree_map::BTreeMap;20use frame_support::{dispatch::DispatchResultWithPostInfo, ensure, fail, weights::Weight, traits::Get};21use up_data_structs::{22	CollectionId, TokenId, CreateItemExData, CreateRefungibleExData, budget::Budget, Property,23	PropertyKey, PropertyValue, PropertyKeyPermission, CreateItemData, CollectionPropertiesVec,24};25use pallet_common::{26	CommonCollectionOperations, CommonWeightInfo, RefungibleExtensions, with_weight,27	weights::WeightInfo as _,28};29use pallet_structure::Error as StructureError;30use sp_runtime::{DispatchError};31use sp_std::{vec::Vec, vec};3233use crate::{34	AccountBalance, Allowance, Balance, Config, Error, Owned, Pallet, RefungibleHandle,35	SelfWeightOf, TokenData, weights::WeightInfo, TokensMinted,36};3738macro_rules! max_weight_of {39	($($method:ident ($($args:tt)*)),*) => {40		041		$(42			.max(<SelfWeightOf<T>>::$method($($args)*))43		)*44	};45}4647fn properties_weight<T: Config>(properties: &CollectionPropertiesVec) -> u64 {48	if properties.len() > 0 {49		<CommonWeights<T>>::set_token_properties(properties.len() as u32)50	} else {51		052	}53}5455pub struct CommonWeights<T: Config>(PhantomData<T>);56impl<T: Config> CommonWeightInfo<T::CrossAccountId> for CommonWeights<T> {57	fn create_item() -> Weight {58		<SelfWeightOf<T>>::create_item()59	}6061	fn create_multiple_items(data: &[CreateItemData]) -> Weight {62		<SelfWeightOf<T>>::create_multiple_items(data.len() as u32).saturating_add(63			data.iter()64				.map(|data| match data {65					CreateItemData::ReFungible(rft_data) => {66						properties_weight::<T>(&rft_data.properties)67					}68					_ => 0,69				})70				.fold(0, |a, b| a.saturating_add(b)),71		)72	}7374	fn create_multiple_items_ex(call: &CreateItemExData<T::CrossAccountId>) -> Weight {75		match call {76			CreateItemExData::RefungibleMultipleOwners(i) => {77				<SelfWeightOf<T>>::create_multiple_items_ex_multiple_owners(i.users.len() as u32)78					.saturating_add(properties_weight::<T>(&i.properties))79			}80			CreateItemExData::RefungibleMultipleItems(i) => {81				<SelfWeightOf<T>>::create_multiple_items_ex_multiple_items(i.len() as u32)82					.saturating_add(83						i.iter()84							.map(|d| properties_weight::<T>(&d.properties))85							.fold(0, |a, b| a.saturating_add(b)),86					)87			}88			_ => 0,89		}90	}9192	fn burn_item() -> Weight {93		max_weight_of!(burn_item_partial(), burn_item_fully())94	}9596	fn set_collection_properties(amount: u32) -> Weight {97		<pallet_common::SelfWeightOf<T>>::set_collection_properties(amount)98	}99100	fn delete_collection_properties(amount: u32) -> Weight {101		<pallet_common::SelfWeightOf<T>>::delete_collection_properties(amount)102	}103104	fn set_token_properties(amount: u32) -> Weight {105		<SelfWeightOf<T>>::set_token_properties(amount)106	}107108	fn delete_token_properties(amount: u32) -> Weight {109		<SelfWeightOf<T>>::delete_token_properties(amount)110	}111112	fn set_token_property_permissions(amount: u32) -> Weight {113		<SelfWeightOf<T>>::set_token_property_permissions(amount)114	}115116	fn transfer() -> Weight {117		max_weight_of!(118			transfer_normal(),119			transfer_creating(),120			transfer_removing(),121			transfer_creating_removing()122		)123	}124125	fn approve() -> Weight {126		<SelfWeightOf<T>>::approve()127	}128129	fn transfer_from() -> Weight {130		max_weight_of!(131			transfer_from_normal(),132			transfer_from_creating(),133			transfer_from_removing(),134			transfer_from_creating_removing()135		)136	}137138	fn burn_from() -> Weight {139		<SelfWeightOf<T>>::burn_from()140	}141142	fn burn_recursively_self_raw() -> Weight {143		// Read to get total balance144		Self::burn_item() + T::DbWeight::get().reads(1)145	}146	fn burn_recursively_breadth_raw(_amount: u32) -> Weight {147		// Refungible token can't have children148		0149	}150}151152fn map_create_data<T: Config>(153	data: up_data_structs::CreateItemData,154	to: &T::CrossAccountId,155) -> Result<CreateRefungibleExData<T::CrossAccountId>, DispatchError> {156	match data {157		up_data_structs::CreateItemData::ReFungible(data) => Ok(CreateRefungibleExData {158			const_data: data.const_data,159			users: {160				let mut out = BTreeMap::new();161				out.insert(to.clone(), data.pieces);162				out.try_into().expect("limit > 0")163			},164			properties: data.properties,165		}),166		_ => fail!(<Error<T>>::NotRefungibleDataUsedToMintFungibleCollectionToken),167	}168}169170/// Implementation of `CommonCollectionOperations` for `RefungibleHandle`. It wraps Refungible Pallete171/// methods and adds weight info.172impl<T: Config> CommonCollectionOperations<T> for RefungibleHandle<T> {173	fn create_item(174		&self,175		sender: T::CrossAccountId,176		to: T::CrossAccountId,177		data: up_data_structs::CreateItemData,178		nesting_budget: &dyn Budget,179	) -> DispatchResultWithPostInfo {180		with_weight(181			<Pallet<T>>::create_item(182				self,183				&sender,184				map_create_data::<T>(data, &to)?,185				nesting_budget,186			),187			<CommonWeights<T>>::create_item(),188		)189	}190191	fn create_multiple_items(192		&self,193		sender: T::CrossAccountId,194		to: T::CrossAccountId,195		data: Vec<up_data_structs::CreateItemData>,196		nesting_budget: &dyn Budget,197	) -> DispatchResultWithPostInfo {198		let weight = <CommonWeights<T>>::create_multiple_items(&data);199		let data = data200			.into_iter()201			.map(|d| map_create_data::<T>(d, &to))202			.collect::<Result<Vec<_>, DispatchError>>()?;203204		with_weight(205			<Pallet<T>>::create_multiple_items(self, &sender, data, nesting_budget),206			weight,207		)208	}209210	fn create_multiple_items_ex(211		&self,212		sender: <T>::CrossAccountId,213		data: CreateItemExData<T::CrossAccountId>,214		nesting_budget: &dyn Budget,215	) -> DispatchResultWithPostInfo {216		let weight = <CommonWeights<T>>::create_multiple_items_ex(&data);217		let data = match data {218			CreateItemExData::RefungibleMultipleOwners(r) => vec![r],219			CreateItemExData::RefungibleMultipleItems(r)220				if r.iter().all(|i| i.users.len() == 1) =>221			{222				r.into_inner()223			}224			_ => fail!(<Error<T>>::NotRefungibleDataUsedToMintFungibleCollectionToken),225		};226227		with_weight(228			<Pallet<T>>::create_multiple_items(self, &sender, data, nesting_budget),229			weight,230		)231	}232233	fn burn_item(234		&self,235		sender: T::CrossAccountId,236		token: TokenId,237		amount: u128,238	) -> DispatchResultWithPostInfo {239		with_weight(240			<Pallet<T>>::burn(self, &sender, token, amount),241			<CommonWeights<T>>::burn_item(),242		)243	}244245	fn burn_item_recursively(246		&self,247		sender: T::CrossAccountId,248		token: TokenId,249		self_budget: &dyn Budget,250		_breadth_budget: &dyn Budget,251	) -> DispatchResultWithPostInfo {252		ensure!(self_budget.consume(), <StructureError<T>>::DepthLimit,);253		with_weight(254			<Pallet<T>>::burn(255				self,256				&sender,257				token,258				<Balance<T>>::get((self.id, token, &sender)),259			),260			<CommonWeights<T>>::burn_recursively_self_raw(),261		)262	}263264	fn transfer(265		&self,266		from: T::CrossAccountId,267		to: T::CrossAccountId,268		token: TokenId,269		amount: u128,270		nesting_budget: &dyn Budget,271	) -> DispatchResultWithPostInfo {272		with_weight(273			<Pallet<T>>::transfer(self, &from, &to, token, amount, nesting_budget),274			<CommonWeights<T>>::transfer(),275		)276	}277278	fn approve(279		&self,280		sender: T::CrossAccountId,281		spender: T::CrossAccountId,282		token: TokenId,283		amount: u128,284	) -> DispatchResultWithPostInfo {285		with_weight(286			<Pallet<T>>::set_allowance(self, &sender, &spender, token, amount),287			<CommonWeights<T>>::approve(),288		)289	}290291	fn transfer_from(292		&self,293		sender: T::CrossAccountId,294		from: T::CrossAccountId,295		to: T::CrossAccountId,296		token: TokenId,297		amount: u128,298		nesting_budget: &dyn Budget,299	) -> DispatchResultWithPostInfo {300		with_weight(301			<Pallet<T>>::transfer_from(self, &sender, &from, &to, token, amount, nesting_budget),302			<CommonWeights<T>>::transfer_from(),303		)304	}305306	fn burn_from(307		&self,308		sender: T::CrossAccountId,309		from: T::CrossAccountId,310		token: TokenId,311		amount: u128,312		nesting_budget: &dyn Budget,313	) -> DispatchResultWithPostInfo {314		with_weight(315			<Pallet<T>>::burn_from(self, &sender, &from, token, amount, nesting_budget),316			<CommonWeights<T>>::burn_from(),317		)318	}319320	fn set_collection_properties(321		&self,322		sender: T::CrossAccountId,323		properties: Vec<Property>,324	) -> DispatchResultWithPostInfo {325		let weight = <CommonWeights<T>>::set_collection_properties(properties.len() as u32);326327		with_weight(328			<Pallet<T>>::set_collection_properties(self, &sender, properties),329			weight,330		)331	}332333	fn delete_collection_properties(334		&self,335		sender: &T::CrossAccountId,336		property_keys: Vec<PropertyKey>,337	) -> DispatchResultWithPostInfo {338		let weight = <CommonWeights<T>>::delete_collection_properties(property_keys.len() as u32);339340		with_weight(341			<Pallet<T>>::delete_collection_properties(self, sender, property_keys),342			weight,343		)344	}345346	fn set_token_properties(347		&self,348		sender: T::CrossAccountId,349		token_id: TokenId,350		properties: Vec<Property>,351		nesting_budget: &dyn Budget,352	) -> DispatchResultWithPostInfo {353		let weight = <CommonWeights<T>>::set_token_properties(properties.len() as u32);354355		with_weight(356			<Pallet<T>>::set_token_properties(357				self,358				&sender,359				token_id,360				properties.into_iter(),361				false,362				nesting_budget,363			),364			weight,365		)366	}367368	fn set_token_property_permissions(369		&self,370		sender: &T::CrossAccountId,371		property_permissions: Vec<PropertyKeyPermission>,372	) -> DispatchResultWithPostInfo {373		let weight =374			<CommonWeights<T>>::set_token_property_permissions(property_permissions.len() as u32);375376		with_weight(377			<Pallet<T>>::set_token_property_permissions(self, sender, property_permissions),378			weight,379		)380	}381382	fn delete_token_properties(383		&self,384		sender: T::CrossAccountId,385		token_id: TokenId,386		property_keys: Vec<PropertyKey>,387		nesting_budget: &dyn Budget,388	) -> DispatchResultWithPostInfo {389		let weight = <CommonWeights<T>>::delete_token_properties(property_keys.len() as u32);390391		with_weight(392			<Pallet<T>>::delete_token_properties(393				self,394				&sender,395				token_id,396				property_keys.into_iter(),397				nesting_budget,398			),399			weight,400		)401	}402403	fn check_nesting(404		&self,405		_sender: <T>::CrossAccountId,406		_from: (CollectionId, TokenId),407		_under: TokenId,408		_nesting_budget: &dyn Budget,409	) -> sp_runtime::DispatchResult {410		fail!(<Error<T>>::RefungibleDisallowsNesting)411	}412413	fn nest(&self, _under: TokenId, _to_nest: (CollectionId, TokenId)) {}414415	fn unnest(&self, _under: TokenId, _to_nest: (CollectionId, TokenId)) {}416417	fn account_tokens(&self, account: T::CrossAccountId) -> Vec<TokenId> {418		<Owned<T>>::iter_prefix((self.id, account))419			.map(|(id, _)| id)420			.collect()421	}422423	fn collection_tokens(&self) -> Vec<TokenId> {424		<TokenData<T>>::iter_prefix((self.id,))425			.map(|(id, _)| id)426			.collect()427	}428429	fn token_exists(&self, token: TokenId) -> bool {430		<Pallet<T>>::token_exists(self, token)431	}432433	fn last_token_id(&self) -> TokenId {434		TokenId(<TokensMinted<T>>::get(self.id))435	}436437	fn token_owner(&self, token: TokenId) -> Option<T::CrossAccountId> {438		<Pallet<T>>::token_owner(self.id, token)439	}440441	/// Returns 10 token in no particular order.442	fn token_owners(&self, token: TokenId) -> Vec<T::CrossAccountId> {443		<Pallet<T>>::token_owners(self.id, token).unwrap_or_default()444	}445446	fn token_property(&self, _token_id: TokenId, _key: &PropertyKey) -> Option<PropertyValue> {447		None448	}449450	fn token_properties(451		&self,452		_token_id: TokenId,453		_keys: Option<Vec<PropertyKey>>,454	) -> Vec<Property> {455		Vec::new()456	}457458	fn total_supply(&self) -> u32 {459		<Pallet<T>>::total_supply(self)460	}461462	fn account_balance(&self, account: T::CrossAccountId) -> u32 {463		<AccountBalance<T>>::get((self.id, account))464	}465466	fn balance(&self, account: T::CrossAccountId, token: TokenId) -> u128 {467		<Balance<T>>::get((self.id, token, account))468	}469470	fn allowance(471		&self,472		sender: T::CrossAccountId,473		spender: T::CrossAccountId,474		token: TokenId,475	) -> u128 {476		<Allowance<T>>::get((self.id, token, sender, spender))477	}478479	fn refungible_extensions(&self) -> Option<&dyn RefungibleExtensions<T>> {480		Some(self)481	}482483	fn total_pieces(&self, token: TokenId) -> Option<u128> {484		<Pallet<T>>::total_pieces(self.id, token)485	}486}487488impl<T: Config> RefungibleExtensions<T> for RefungibleHandle<T> {489	fn repartition(490		&self,491		owner: &T::CrossAccountId,492		token: TokenId,493		amount: u128,494	) -> DispatchResultWithPostInfo {495		with_weight(496			<Pallet<T>>::repartition(self, owner, token, amount),497			<SelfWeightOf<T>>::repartition_item(),498		)499	}500}
modifiedpallets/refungible/src/lib.rsdiffbeforeafterboth
--- a/pallets/refungible/src/lib.rs
+++ b/pallets/refungible/src/lib.rs
@@ -1235,4 +1235,26 @@
 	) -> DispatchResult {
 		<PalletCommon<T>>::set_token_property_permissions(collection, sender, property_permissions)
 	}
+
+	/// Returns 10 token in no particular order.
+	///
+	/// There is no direct way to get token holders in ascending order,
+	/// since `iter_prefix` returns values in no particular order.
+	/// Therefore, getting the 10 largest holders with a large value of holders
+	/// can lead to impact memory allocation + sorting with  `n * log (n)`.
+	pub fn token_owners(
+		collection_id: CollectionId,
+		token: TokenId,
+	) -> Option<Vec<T::CrossAccountId>> {
+		let res: Vec<T::CrossAccountId> = <Balance<T>>::iter_prefix((collection_id, token))
+			.map(|(owner, _amount)| owner)
+			.take(10)
+			.collect();
+
+		if res.is_empty() {
+			None
+		} else {
+			Some(res)
+		}
+	}
 }
addedprimitives/rpc/CHANGELOG.mddiffbeforeafterboth
--- /dev/null
+++ b/primitives/rpc/CHANGELOG.md
@@ -0,0 +1,10 @@
+# Change Log
+
+All notable changes to this project will be documented in this file.
+
+## [0.1.1] - 2022-07-14
+
+### Added
+
+ - Implementation of RPC method `token_owners` returning 10 owners in no particular order.
+   This was an internal request to improve the web interface and support fractionalization event. 
\ No newline at end of file
modifiedprimitives/rpc/Cargo.tomldiffbeforeafterboth
--- a/primitives/rpc/Cargo.toml
+++ b/primitives/rpc/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "up-rpc"
-version = "0.1.0"
+version = "0.1.1"
 license = "GPLv3"
 edition = "2021"
 
modifiedprimitives/rpc/src/lib.rsdiffbeforeafterboth
--- a/primitives/rpc/src/lib.rs
+++ b/primitives/rpc/src/lib.rs
@@ -81,5 +81,6 @@
 		fn next_sponsored(collection: CollectionId, account: CrossAccountId, token: TokenId) -> Result<Option<u64>>;
 		fn effective_collection_limits(collection_id: CollectionId) -> Result<Option<CollectionLimits>>;
 		fn total_pieces(collection_id: CollectionId, token_id: TokenId) -> Result<Option<u128>>;
+		fn token_owners(collection: CollectionId, token: TokenId) -> Result<Vec<CrossAccountId>>;
 	}
 }
addedruntime/common/CHANGELOG.mddiffbeforeafterboth
--- /dev/null
+++ b/runtime/common/CHANGELOG.md
@@ -0,0 +1,13 @@
+# Change Log
+
+All notable changes to this project will be documented in this file.
+
+## [0.9.25] - 2022-07-14
+
+### Added
+
+ - Implementation of RPC method `token_owners` returning 10 owners in no particular order.
+    This was an internal request to improve the web interface and support fractionalization event. 
+
+
+ 
\ No newline at end of file
modifiedruntime/common/src/runtime_apis.rsdiffbeforeafterboth
--- a/runtime/common/src/runtime_apis.rs
+++ b/runtime/common/src/runtime_apis.rs
@@ -40,6 +40,11 @@
                 fn token_owner(collection: CollectionId, token: TokenId) -> Result<Option<CrossAccountId>, DispatchError> {
                     dispatch_unique_runtime!(collection.token_owner(token))
                 }
+
+                fn token_owners(collection: CollectionId, token: TokenId) -> Result<Vec::<CrossAccountId>, DispatchError>  {
+                   dispatch_unique_runtime!(collection.token_owners(token))
+                }
+
                 fn topmost_token_owner(collection: CollectionId, token: TokenId) -> Result<Option<CrossAccountId>, DispatchError> {
                     let budget = up_data_structs::budget::Value::new(10);
 
addedtests/CHANGELOG.mddiffbeforeafterboth
--- /dev/null
+++ b/tests/CHANGELOG.md
@@ -0,0 +1,11 @@
+# Change Log
+
+All notable changes to this project will be documented in this file.
+
+## 2022-07-14
+
+### Added
+ - Integrintegration tests of RPC method `token_owners`.
+ - Integrintegration tests of Fungible Pallet.
+  
+ 
\ No newline at end of file
modifiedtests/package.jsondiffbeforeafterboth
--- a/tests/package.json
+++ b/tests/package.json
@@ -80,6 +80,8 @@
     "testLimits": "mocha --timeout 9999999 -r ts-node/register ./**/limits.test.ts",
     "testEthCreateCollection": "mocha --timeout 9999999 -r ts-node/register ./**/eth/createCollection.test.ts",
     "testRFT": "mocha --timeout 9999999 -r ts-node/register ./**/refungible.test.ts",
+    "testFT": "mocha --timeout 9999999 -r ts-node/register ./**/fungible.test.ts",
+    "testRPC": "mocha --timeout 9999999 -r ts-node/register ./**/rpc.test.ts",
     "polkadot-types-fetch-metadata": "curl -H 'Content-Type: application/json' -d '{\"id\":\"1\", \"jsonrpc\":\"2.0\", \"method\": \"state_getMetadata\", \"params\":[]}' http://localhost:9933 > src/interfaces/metadata.json",
     "polkadot-types-from-defs": "ts-node ./node_modules/.bin/polkadot-types-from-defs --endpoint src/interfaces/metadata.json --input src/interfaces/ --package .",
     "polkadot-types-from-chain": "ts-node ./node_modules/.bin/polkadot-types-from-chain --endpoint src/interfaces/metadata.json --output src/interfaces/ --package .",
addedtests/src/fungible.test.tsdiffbeforeafterboth
--- /dev/null
+++ b/tests/src/fungible.test.ts
@@ -0,0 +1,184 @@
+// Copyright 2019-2022 Unique Network (Gibraltar) Ltd.
+// This file is part of Unique Network.
+
+// Unique Network is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// Unique Network is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with Unique Network. If not, see <http://www.gnu.org/licenses/>.
+
+import {default as usingApi} from './substrate/substrate-api';
+import {IKeyringPair} from '@polkadot/types/types';
+import {
+  getBalance,
+  createMultipleItemsExpectSuccess,
+  isTokenExists,
+  getLastTokenId,
+  getAllowance,
+  approve,
+  transferFrom,
+  createCollection,
+  transfer,
+  burnItem,
+  normalizeAccountId,
+  CrossAccountId,
+  createFungibleItemExpectSuccess,
+  U128_MAX,
+  burnFromExpectSuccess,
+} from './util/helpers';
+
+import chai from 'chai';
+import chaiAsPromised from 'chai-as-promised';
+chai.use(chaiAsPromised);
+const expect = chai.expect;
+
+let alice: IKeyringPair;
+let bob: IKeyringPair;
+
+describe('integration test: Fungible functionality:', () => {
+  before(async () => {
+    await usingApi(async (api, privateKeyWrapper) => {
+      alice = privateKeyWrapper('//Alice');
+      bob = privateKeyWrapper('//Bob');
+    });
+  });
+
+  it('Create fungible collection and token', async () => {
+    await usingApi(async api => {
+      const createCollectionResult = await createCollection(api, alice, {mode: {type: 'Fungible', decimalPoints: 0}});
+      expect(createCollectionResult.success).to.be.true;
+      const collectionId  = createCollectionResult.collectionId;
+      const defaultTokenId = await getLastTokenId(api, collectionId);
+      const aliceTokenId = await createFungibleItemExpectSuccess(alice, collectionId, {Value: U128_MAX}, alice.address);
+      const aliceBalance = await getBalance(api, collectionId, alice, aliceTokenId); 
+      const itemCountAfter = await getLastTokenId(api, collectionId);
+      
+      // What to expect
+      // tslint:disable-next-line:no-unused-expression
+      expect(itemCountAfter).to.be.equal(defaultTokenId);
+      expect(aliceBalance).to.be.equal(U128_MAX);
+    });
+  });
+  
+  it('RPC method tokenOnewrs for fungible collection and token', async () => {
+    await usingApi(async (api, privateKeyWrapper) => {
+      const ethAcc = {Ethereum: '0x67fb3503a61b284dc83fa96dceec4192db47dc7c'};
+      const facelessCrowd = Array.from(Array(7).keys()).map(i => normalizeAccountId(privateKeyWrapper(i.toString())));
+      
+      const createCollectionResult = await createCollection(api, alice, {mode: {type: 'Fungible', decimalPoints: 0}});
+      const collectionId = createCollectionResult.collectionId;
+      const aliceTokenId = await createFungibleItemExpectSuccess(alice, collectionId, {Value: U128_MAX}, alice.address);
+     
+      await transfer(api, collectionId, aliceTokenId, alice, bob, 1000n);
+      await transfer(api, collectionId, aliceTokenId, alice, ethAcc, 900n);
+            
+      for (let i = 0; i < 7; i++) {
+        await transfer(api, collectionId, aliceTokenId, alice, facelessCrowd[i], 1);
+      } 
+      
+      const owners = await api.rpc.unique.tokenOwners(collectionId, aliceTokenId);
+      const ids = (owners.toJSON() as CrossAccountId[]).map(s => normalizeAccountId(s));
+      const aliceID = normalizeAccountId(alice);
+      const bobId = normalizeAccountId(bob);
+
+      // What to expect
+      // tslint:disable-next-line:no-unused-expression
+      expect(ids).to.deep.include.members([aliceID, ethAcc, bobId, ...facelessCrowd]);
+      expect(owners.length == 10).to.be.true;
+      
+      const eleven = privateKeyWrapper('11');
+      expect(await transfer(api, collectionId, aliceTokenId, alice, eleven, 10n)).to.be.true;
+      expect((await api.rpc.unique.tokenOwners(collectionId, aliceTokenId)).length).to.be.equal(10);
+    });
+  });
+  
+  it('Transfer token', async () => {
+    await usingApi(async api => {
+      const ethAcc = {Ethereum: '0x67fb3503a61b284dc83fa96dceec4192db47dc7c'};
+      const collectionId = (await createCollection(api, alice, {mode: {type: 'Fungible', decimalPoints: 0}})).collectionId;
+      const tokenId = await createFungibleItemExpectSuccess(alice, collectionId, {Value: 500n}, alice.address);
+
+      expect(await getBalance(api, collectionId, alice, tokenId)).to.be.equal(500n);
+      expect(await transfer(api, collectionId, tokenId, alice, bob, 60n)).to.be.true;
+      expect(await transfer(api, collectionId, tokenId, alice, ethAcc, 140n)).to.be.true;
+
+      expect(await getBalance(api, collectionId, alice, tokenId)).to.be.equal(300n);
+      expect(await getBalance(api, collectionId, bob, tokenId)).to.be.equal(60n);
+      expect(await getBalance(api, collectionId, ethAcc, tokenId)).to.be.equal(140n);
+      await expect(transfer(api, collectionId, tokenId, alice, bob, 350n)).to.eventually.be.rejected;
+    });
+  });
+
+  it('Tokens multiple creation', async () => {
+    await usingApi(async api => {
+      const collectionId = (await createCollection(api, alice, {mode: {type: 'Fungible', decimalPoints: 0}})).collectionId;
+      
+      const args = [
+        {Fungible: {Value: 500n}},
+        {Fungible: {Value: 400n}},
+        {Fungible: {Value: 300n}},
+      ];
+      
+      await createMultipleItemsExpectSuccess(alice, collectionId, args);
+      expect(await getBalance(api, collectionId, alice, 0)).to.be.equal(1200n);
+    });   
+  });
+
+  it('Burn some tokens ', async () => {
+    await usingApi(async api => {   
+      const collectionId = (await createCollection(api, alice, {mode: {type: 'Fungible', decimalPoints: 0}})).collectionId;
+      const tokenId = (await createFungibleItemExpectSuccess(alice, collectionId, {Value: 500n}, alice.address));
+      expect(await isTokenExists(api, collectionId, tokenId)).to.be.true;
+      expect(await getBalance(api, collectionId, alice, tokenId)).to.be.equal(500n);
+      expect(await burnItem(api, alice, collectionId, tokenId, 499n)).to.be.true;
+      expect(await isTokenExists(api, collectionId, tokenId)).to.be.true;
+      expect(await getBalance(api, collectionId, alice, tokenId)).to.be.equal(1n);
+    });
+  });
+  
+  it('Burn all tokens ', async () => {
+    await usingApi(async api => {   
+      const collectionId = (await createCollection(api, alice, {mode: {type: 'Fungible', decimalPoints: 0}})).collectionId;
+      const tokenId = (await createFungibleItemExpectSuccess(alice, collectionId, {Value: 500n}, alice.address));
+      expect(await isTokenExists(api, collectionId, tokenId)).to.be.true;
+      expect(await burnItem(api, alice, collectionId, tokenId, 500n)).to.be.true;
+      expect(await isTokenExists(api, collectionId, tokenId)).to.be.true;
+      
+      expect(await getBalance(api, collectionId, alice, tokenId)).to.be.equal(0n);
+      expect((await api.rpc.unique.totalPieces(collectionId, tokenId)).value.toBigInt()).to.be.equal(0n);
+    });
+  });
+
+  it('Set allowance for token', async () => {
+    await usingApi(async api => {
+      const collectionId = (await createCollection(api, alice, {mode: {type: 'Fungible', decimalPoints: 0}})).collectionId;
+      const ethAcc = {Ethereum: '0x67fb3503a61b284dc83fa96dceec4192db47dc7c'};
+      
+      const tokenId = (await createFungibleItemExpectSuccess(alice, collectionId, {Value: 100n}, alice.address));
+      expect(await getBalance(api, collectionId, alice, tokenId)).to.be.equal(100n);
+
+      expect(await approve(api, collectionId, tokenId, alice, bob, 60n)).to.be.true;
+      expect(await getAllowance(api, collectionId, alice, bob, tokenId)).to.be.equal(60n);
+      expect(await getBalance(api, collectionId, bob, tokenId)).to.be.equal(0n);
+      
+      expect(await transferFrom(api, collectionId, tokenId, bob, alice, bob,  20n)).to.be.true;
+      expect(await getBalance(api, collectionId, alice, tokenId)).to.be.equal(80n);
+      expect(await getBalance(api, collectionId, bob, tokenId)).to.be.equal(20n);
+      expect(await getAllowance(api, collectionId, alice, bob, tokenId)).to.be.equal(40n);
+      
+      await burnFromExpectSuccess(bob, alice, collectionId, tokenId, 10n);
+     
+      expect(await getBalance(api, collectionId, alice, tokenId)).to.be.equal(70n);
+      expect(await getAllowance(api, collectionId, alice, bob, tokenId)).to.be.equal(30n);
+      expect(await transferFrom(api, collectionId, tokenId, bob, alice, ethAcc,  10n)).to.be.true;
+      expect(await getBalance(api, collectionId, ethAcc, tokenId)).to.be.equal(10n);
+    });
+  });
+});
modifiedtests/src/interfaces/augment-api-consts.tsdiffbeforeafterboth
--- a/tests/src/interfaces/augment-api-consts.ts
+++ b/tests/src/interfaces/augment-api-consts.ts
@@ -29,7 +29,13 @@
       [key: string]: Codec;
     };
     common: {
+      /**
+       * Maximum admins per collection.
+       **/
       collectionAdminsLimit: u32 & AugmentedConst<ApiType>;
+      /**
+       * Set price to create a collection.
+       **/
       collectionCreationPrice: u128 & AugmentedConst<ApiType>;
       /**
        * Generic const
modifiedtests/src/interfaces/augment-api-events.tsdiffbeforeafterboth
--- a/tests/src/interfaces/augment-api-events.ts
+++ b/tests/src/interfaces/augment-api-events.ts
@@ -59,82 +59,47 @@
     };
     common: {
       /**
-       * * collection_id
-       * 
-       * * item_id
-       * 
-       * * sender
-       * 
-       * * spender
-       * 
-       * * amount
+       * Amount pieces of token owned by `sender` was approved for `spender`.
        **/
       Approved: AugmentedEvent<ApiType, [u32, u32, PalletEvmAccountBasicCrossAccountIdRepr, PalletEvmAccountBasicCrossAccountIdRepr, u128]>;
       /**
        * New collection was created
-       * 
-       * # Arguments
-       * 
-       * * collection_id: Globally unique identifier of newly created collection.
-       * 
-       * * mode: [CollectionMode] converted into u8.
-       * 
-       * * account_id: Collection owner.
        **/
       CollectionCreated: AugmentedEvent<ApiType, [u32, u8, AccountId32]>;
       /**
        * New collection was destroyed
-       * 
-       * # Arguments
-       * 
-       * * collection_id: Globally unique identifier of collection.
        **/
       CollectionDestroyed: AugmentedEvent<ApiType, [u32]>;
+      /**
+       * The property has been deleted.
+       **/
       CollectionPropertyDeleted: AugmentedEvent<ApiType, [u32, Bytes]>;
+      /**
+       * The colletion property has been set.
+       **/
       CollectionPropertySet: AugmentedEvent<ApiType, [u32, Bytes]>;
       /**
        * New item was created.
-       * 
-       * # Arguments
-       * 
-       * * collection_id: Id of the collection where item was created.
-       * 
-       * * item_id: Id of an item. Unique within the collection.
-       * 
-       * * recipient: Owner of newly created item
-       * 
-       * * amount: Always 1 for NFT
        **/
       ItemCreated: AugmentedEvent<ApiType, [u32, u32, PalletEvmAccountBasicCrossAccountIdRepr, u128]>;
       /**
        * Collection item was burned.
-       * 
-       * # Arguments
-       * 
-       * * collection_id.
-       * 
-       * * item_id: Identifier of burned NFT.
-       * 
-       * * owner: which user has destroyed its tokens
-       * 
-       * * amount: Always 1 for NFT
        **/
       ItemDestroyed: AugmentedEvent<ApiType, [u32, u32, PalletEvmAccountBasicCrossAccountIdRepr, u128]>;
+      /**
+       * The colletion property permission has been set.
+       **/
       PropertyPermissionSet: AugmentedEvent<ApiType, [u32, Bytes]>;
+      /**
+       * The token property has been deleted.
+       **/
       TokenPropertyDeleted: AugmentedEvent<ApiType, [u32, u32, Bytes]>;
+      /**
+       * The token property has been set.
+       **/
       TokenPropertySet: AugmentedEvent<ApiType, [u32, u32, Bytes]>;
       /**
        * Item was transferred
-       * 
-       * * collection_id: Id of collection to which item is belong
-       * 
-       * * item_id: Id of an item
-       * 
-       * * sender: Original owner of item
-       * 
-       * * recipient: New owner of item
-       * 
-       * * amount: Always 1 for NFT
        **/
       Transfer: AugmentedEvent<ApiType, [u32, u32, PalletEvmAccountBasicCrossAccountIdRepr, PalletEvmAccountBasicCrossAccountIdRepr, u128]>;
       /**
modifiedtests/src/interfaces/augment-api-query.tsdiffbeforeafterboth
--- a/tests/src/interfaces/augment-api-query.ts
+++ b/tests/src/interfaces/augment-api-query.ts
@@ -69,24 +69,36 @@
       [key: string]: QueryableStorageEntry<ApiType>;
     };
     common: {
+      /**
+       * Storage of collection admins count.
+       **/
       adminAmount: AugmentedQuery<ApiType, (arg: u32 | AnyNumber | Uint8Array) => Observable<u32>, [u32]> & QueryableStorageEntry<ApiType, [u32]>;
       /**
        * Allowlisted collection users
        **/
       allowlist: AugmentedQuery<ApiType, (arg1: u32 | AnyNumber | Uint8Array, arg2: PalletEvmAccountBasicCrossAccountIdRepr | { Substrate: any } | { Ethereum: any } | string | Uint8Array) => Observable<bool>, [u32, PalletEvmAccountBasicCrossAccountIdRepr]> & QueryableStorageEntry<ApiType, [u32, PalletEvmAccountBasicCrossAccountIdRepr]>;
       /**
-       * Collection info
+       * Storage of collection info.
        **/
       collectionById: AugmentedQuery<ApiType, (arg: u32 | AnyNumber | Uint8Array) => Observable<Option<UpDataStructsCollection>>, [u32]> & QueryableStorageEntry<ApiType, [u32]>;
       /**
-       * Collection properties
+       * Storage of collection properties.
        **/
       collectionProperties: AugmentedQuery<ApiType, (arg: u32 | AnyNumber | Uint8Array) => Observable<UpDataStructsProperties>, [u32]> & QueryableStorageEntry<ApiType, [u32]>;
+      /**
+       * Storage of collection properties permissions.
+       **/
       collectionPropertyPermissions: AugmentedQuery<ApiType, (arg: u32 | AnyNumber | Uint8Array) => Observable<BTreeMap<Bytes, UpDataStructsPropertyPermission>>, [u32]> & QueryableStorageEntry<ApiType, [u32]>;
+      /**
+       * Storage of the count of created collections.
+       **/
       createdCollectionCount: AugmentedQuery<ApiType, () => Observable<u32>, []> & QueryableStorageEntry<ApiType, []>;
+      /**
+       * Storage of the count of deleted collections.
+       **/
       destroyedCollectionCount: AugmentedQuery<ApiType, () => Observable<u32>, []> & QueryableStorageEntry<ApiType, []>;
       /**
-       * Not used by code, exists only to provide some types to metadata
+       * Not used by code, exists only to provide some types to metadata.
        **/
       dummyStorageValue: AugmentedQuery<ApiType, () => Observable<Option<ITuple<[UpDataStructsCollectionStats, u32, u32, UpDataStructsTokenChild, PhantomTypeUpDataStructs]>>>, []> & QueryableStorageEntry<ApiType, []>;
       /**
@@ -231,20 +243,42 @@
       [key: string]: QueryableStorageEntry<ApiType>;
     };
     nonfungible: {
+      /**
+       * Amount of tokens owned by account.
+       **/
       accountBalance: AugmentedQuery<ApiType, (arg1: u32 | AnyNumber | Uint8Array, arg2: PalletEvmAccountBasicCrossAccountIdRepr | { Substrate: any } | { Ethereum: any } | string | Uint8Array) => Observable<u32>, [u32, PalletEvmAccountBasicCrossAccountIdRepr]> & QueryableStorageEntry<ApiType, [u32, PalletEvmAccountBasicCrossAccountIdRepr]>;
+      /**
+       * Allowance set by an owner for a spender for a token.
+       **/
       allowance: AugmentedQuery<ApiType, (arg1: u32 | AnyNumber | Uint8Array, arg2: u32 | AnyNumber | Uint8Array) => Observable<Option<PalletEvmAccountBasicCrossAccountIdRepr>>, [u32, u32]> & QueryableStorageEntry<ApiType, [u32, u32]>;
       /**
-       * Used to enumerate tokens owned by account
+       * Used to enumerate tokens owned by account.
        **/
       owned: AugmentedQuery<ApiType, (arg1: u32 | AnyNumber | Uint8Array, arg2: PalletEvmAccountBasicCrossAccountIdRepr | { Substrate: any } | { Ethereum: any } | string | Uint8Array, arg3: u32 | AnyNumber | Uint8Array) => Observable<bool>, [u32, PalletEvmAccountBasicCrossAccountIdRepr, u32]> & QueryableStorageEntry<ApiType, [u32, PalletEvmAccountBasicCrossAccountIdRepr, u32]>;
+      /**
+       * Custom data that is serialized to bytes and attached to a token property.
+       * Currently used to store RMRK data.
+       **/
       tokenAuxProperties: AugmentedQuery<ApiType, (arg1: u32 | AnyNumber | Uint8Array, arg2: u32 | AnyNumber | Uint8Array, arg3: UpDataStructsPropertyScope | 'None' | 'Rmrk' | number | Uint8Array, arg4: Bytes | string | Uint8Array) => Observable<Option<Bytes>>, [u32, u32, UpDataStructsPropertyScope, Bytes]> & QueryableStorageEntry<ApiType, [u32, u32, UpDataStructsPropertyScope, Bytes]>;
       /**
-       * Used to enumerate token's children
+       * Used to enumerate token's children.
        **/
       tokenChildren: AugmentedQuery<ApiType, (arg1: u32 | AnyNumber | Uint8Array, arg2: u32 | AnyNumber | Uint8Array, arg3: ITuple<[u32, u32]> | [u32 | AnyNumber | Uint8Array, u32 | AnyNumber | Uint8Array]) => Observable<bool>, [u32, u32, ITuple<[u32, u32]>]> & QueryableStorageEntry<ApiType, [u32, u32, ITuple<[u32, u32]>]>;
+      /**
+       * Custom data serialized to bytes for token.
+       **/
       tokenData: AugmentedQuery<ApiType, (arg1: u32 | AnyNumber | Uint8Array, arg2: u32 | AnyNumber | Uint8Array) => Observable<Option<PalletNonfungibleItemData>>, [u32, u32]> & QueryableStorageEntry<ApiType, [u32, u32]>;
+      /**
+       * Key-Value map stored for token.
+       **/
       tokenProperties: AugmentedQuery<ApiType, (arg1: u32 | AnyNumber | Uint8Array, arg2: u32 | AnyNumber | Uint8Array) => Observable<UpDataStructsProperties>, [u32, u32]> & QueryableStorageEntry<ApiType, [u32, u32]>;
+      /**
+       * Amount of burnt tokens for collection.
+       **/
       tokensBurnt: AugmentedQuery<ApiType, (arg: u32 | AnyNumber | Uint8Array) => Observable<u32>, [u32]> & QueryableStorageEntry<ApiType, [u32]>;
+      /**
+       * Amount of tokens minted for collection.
+       **/
       tokensMinted: AugmentedQuery<ApiType, (arg: u32 | AnyNumber | Uint8Array) => Observable<u32>, [u32]> & QueryableStorageEntry<ApiType, [u32]>;
       /**
        * Generic query
@@ -430,6 +464,9 @@
        **/
       tokenData: AugmentedQuery<ApiType, (arg1: u32 | AnyNumber | Uint8Array, arg2: u32 | AnyNumber | Uint8Array) => Observable<PalletRefungibleItemData>, [u32, u32]> & QueryableStorageEntry<ApiType, [u32, u32]>;
       tokenProperties: AugmentedQuery<ApiType, (arg1: u32 | AnyNumber | Uint8Array, arg2: u32 | AnyNumber | Uint8Array) => Observable<UpDataStructsProperties>, [u32, u32]> & QueryableStorageEntry<ApiType, [u32, u32]>;
+      /**
+       * Amount of burnt tokens for collection
+       **/
       tokensBurnt: AugmentedQuery<ApiType, (arg: u32 | AnyNumber | Uint8Array) => Observable<u32>, [u32]> & QueryableStorageEntry<ApiType, [u32]>;
       /**
        * Amount of tokens minted for collection
modifiedtests/src/interfaces/augment-api-rpc.tsdiffbeforeafterboth
--- a/tests/src/interfaces/augment-api-rpc.ts
+++ b/tests/src/interfaces/augment-api-rpc.ts
@@ -709,6 +709,10 @@
        **/
       tokenOwner: AugmentedRpc<(collection: u32 | AnyNumber | Uint8Array, tokenId: u32 | AnyNumber | Uint8Array, at?: Hash | string | Uint8Array) => Observable<Option<PalletEvmAccountBasicCrossAccountIdRepr>>>;
       /**
+       * Returns 10 tokens owners in no particular order
+       **/
+      tokenOwners: AugmentedRpc<(collection: u32 | AnyNumber | Uint8Array, tokenId: u32 | AnyNumber | Uint8Array, at?: Hash | string | Uint8Array) => Observable<Vec<PalletEvmAccountBasicCrossAccountIdRepr>>>;
+      /**
        * Get token properties
        **/
       tokenProperties: AugmentedRpc<(collection: u32 | AnyNumber | Uint8Array, tokenId: u32 | AnyNumber | Uint8Array, propertyKeys?: Vec<Text> | (Text | string)[], at?: Hash | string | Uint8Array) => Observable<Vec<UpDataStructsProperty>>>;
modifiedtests/src/interfaces/unique/definitions.tsdiffbeforeafterboth
--- a/tests/src/interfaces/unique/definitions.ts
+++ b/tests/src/interfaces/unique/definitions.ts
@@ -49,6 +49,7 @@
     balance: fun('Get amount of specific account token', [collectionParam, crossAccountParam(), tokenParam], 'u128'),
     allowance: fun('Get allowed amount', [collectionParam, crossAccountParam('sender'), crossAccountParam('spender'), tokenParam], 'u128'),
     tokenOwner: fun('Get token owner', [collectionParam, tokenParam], `Option<${CROSS_ACCOUNT_ID_TYPE}>`),
+    tokenOwners: fun('Returns 10 tokens owners in no particular order', [collectionParam, tokenParam], `Vec<${CROSS_ACCOUNT_ID_TYPE}>`),
     topmostTokenOwner: fun('Get token owner, in case of nested token - find parent recursive', [collectionParam, tokenParam], `Option<${CROSS_ACCOUNT_ID_TYPE}>`),
     tokenChildren: fun('Get tokens nested directly into the token', [collectionParam, tokenParam], 'Vec<UpDataStructsTokenChild>'),
     constMetadata: fun('Get token constant metadata', [collectionParam, tokenParam], 'Vec<u8>'),
modifiedtests/src/refungible.test.tsdiffbeforeafterboth
--- a/tests/src/refungible.test.ts
+++ b/tests/src/refungible.test.ts
@@ -32,6 +32,8 @@
   repartitionRFT,
   createCollectionWithPropsExpectSuccess,
   getDetailedCollectionInfo,
+  normalizeAccountId,
+  CrossAccountId,
   getCreateItemsResult,
   getDestroyItemsResult,
 } from './util/helpers';
@@ -55,14 +57,14 @@
   it('Create refungible collection and token', async () => {
     await usingApi(async api => {
       const createCollectionResult = await createCollection(api, alice, {mode: {type: 'ReFungible'}});
-      expect(createCollectionResult.success).to.be.true;    
+      expect(createCollectionResult.success).to.be.true;
       const collectionId  = createCollectionResult.collectionId;
-
+      
       const itemCountBefore = await getLastTokenId(api, collectionId);
       const result = await createRefungibleToken(api, alice, collectionId, 100n);
-
+      
       const itemCountAfter = await getLastTokenId(api, collectionId);
-
+      
       // What to expect
       // tslint:disable-next-line:no-unused-expression
       expect(result.success).to.be.true;
@@ -71,7 +73,43 @@
       expect(itemCountAfter.toString()).to.be.equal(result.itemId.toString());
     });
   });
-
+  
+  it('RPC method tokenOnewrs for refungible collection and token', async () => {
+    await usingApi(async (api, privateKeyWrapper) => {
+      const ethAcc = {Ethereum: '0x67fb3503a61b284dc83fa96dceec4192db47dc7c'};
+      const facelessCrowd = Array.from(Array(7).keys()).map(i => normalizeAccountId(privateKeyWrapper(i.toString())));
+      
+      const createCollectionResult = await createCollection(api, alice, {mode: {type: 'ReFungible'}});
+      const collectionId = createCollectionResult.collectionId;
+      
+      const result = await createRefungibleToken(api, alice, collectionId, 10_000n);
+      const aliceTokenId = result.itemId;
+      
+      
+      await transfer(api, collectionId, aliceTokenId, alice, bob, 1000n);
+      await transfer(api, collectionId, aliceTokenId, alice, ethAcc, 900n);
+      
+      for (let i = 0; i < 7; i++) {
+        await transfer(api, collectionId, aliceTokenId, alice, facelessCrowd[i], 50*(i+1));
+      } 
+      
+      const owners = await api.rpc.unique.tokenOwners(collectionId, aliceTokenId);
+      const ids = (owners.toJSON() as CrossAccountId[]).map(s => normalizeAccountId(s));
+      
+      const aliceID = normalizeAccountId(alice);
+      const bobId = normalizeAccountId(bob);
+      
+      // What to expect
+      // tslint:disable-next-line:no-unused-expression
+      expect(ids).to.deep.include.members([aliceID, ethAcc, bobId, ...facelessCrowd]);
+      expect(owners.length).to.be.equal(10);
+      
+      const eleven = privateKeyWrapper('11');
+      expect(await transfer(api, collectionId, aliceTokenId, alice, eleven, 10n)).to.be.true;
+      expect((await api.rpc.unique.tokenOwners(collectionId, aliceTokenId)).length).to.be.equal(10);
+    });
+  });
+  
   it('Transfer token pieces', async () => {
     await usingApi(async api => {
       const collectionId = (await createCollection(api, alice, {mode: {type: 'ReFungible'}})).collectionId;
modifiedtests/src/rpc.test.tsdiffbeforeafterboth
--- a/tests/src/rpc.test.ts
+++ b/tests/src/rpc.test.ts
@@ -1,12 +1,57 @@
+import {IKeyringPair} from '@polkadot/types/types';
 import {expect} from 'chai';
 import usingApi from './substrate/substrate-api';
-import {createCollectionExpectSuccess, getTokenOwner} from './util/helpers';
+import {createCollection, createCollectionExpectSuccess, createFungibleItemExpectSuccess, CrossAccountId, getTokenOwner, normalizeAccountId, transfer, U128_MAX} from './util/helpers';
+
+let alice: IKeyringPair;
+let bob: IKeyringPair;
 
-describe('getTokenOwner', () => {
+
+describe('integration test: RPC methods', () => {
+  before(async () => {
+    await usingApi(async (api, privateKeyWrapper) => {
+      alice = privateKeyWrapper('//Alice');
+      bob = privateKeyWrapper('//Bob');
+    });
+  });
+
+  
   it('returns None for fungible collection', async () => {
     await usingApi(async api => {
       const collection = await createCollectionExpectSuccess({mode: {type: 'Fungible', decimalPoints: 0}});
       await expect(getTokenOwner(api, collection, 0)).to.be.rejectedWith(/^owner == null$/);
     });
   });
+  
+  it('RPC method tokenOwners for fungible collection and token', async () => {
+    await usingApi(async (api, privateKeyWrapper) => {
+      const ethAcc = {Ethereum: '0x67fb3503a61b284dc83fa96dceec4192db47dc7c'};
+      const facelessCrowd = Array.from(Array(7).keys()).map(i => normalizeAccountId(privateKeyWrapper(i.toString())));
+      
+      const createCollectionResult = await createCollection(api, alice, {mode: {type: 'Fungible', decimalPoints: 0}});
+      const collectionId = createCollectionResult.collectionId;
+      const aliceTokenId = await createFungibleItemExpectSuccess(alice, collectionId, {Value: U128_MAX}, alice.address);
+     
+      await transfer(api, collectionId, aliceTokenId, alice, bob, 1000n);
+      await transfer(api, collectionId, aliceTokenId, alice, ethAcc, 900n);
+            
+      for (let i = 0; i < 7; i++) {
+        await transfer(api, collectionId, aliceTokenId, alice, facelessCrowd[i], 1);
+      } 
+      
+      const owners = await api.rpc.unique.tokenOwners(collectionId, aliceTokenId);
+      const ids = (owners.toJSON() as CrossAccountId[]).map(s => normalizeAccountId(s));
+      const aliceID = normalizeAccountId(alice);
+      const bobId = normalizeAccountId(bob);
+
+      // What to expect
+      // tslint:disable-next-line:no-unused-expression
+      expect(ids).to.deep.include.members([aliceID, ethAcc, bobId, ...facelessCrowd]);
+      expect(owners.length == 10).to.be.true;
+      
+      const eleven = privateKeyWrapper('11');
+      expect(await transfer(api, collectionId, aliceTokenId, alice, eleven, 10n)).to.be.true;
+      expect((await api.rpc.unique.tokenOwners(collectionId, aliceTokenId)).length).to.be.equal(10);
+    });
+  });
 });
\ No newline at end of file