git.delta.rocks / unique-network / refs/commits / dc1cc2f6399a

difftreelog

NFT-56 + 47 added

str-mv2020-07-09parent: #7c556ae.patch.diff
in: master

2 files changed

modifiedpallets/nft/src/lib.rsdiffbeforeafterboth
24pub struct CollectionType<AccountId> {24pub struct CollectionType<AccountId> {
25 pub owner: AccountId,25 pub owner: AccountId,
26 pub next_item_id: u64,26 pub next_item_id: u64,
27 pub name: Vec<u16>, // 64 include null escape char
28 pub description: Vec<u16>, // 256 include null escape char
29 pub token_prefix: Vec<u8>, // 16 include null escape char
27 pub custom_data_size: u32,30 pub custom_data_size: u32,
28}31}
2932
59 /// Next available collection ID62 /// Next available collection ID
60 pub NextCollectionID get(fn next_collection_id): u64;63 pub NextCollectionID get(fn next_collection_id): u64;
61
62 pub Collection get(collection): map hasher(identity) u64 => CollectionType<T::AccountId>;64 pub Collection get(fn collection): map hasher(identity) u64 => CollectionType<T::AccountId>;
63 //pub Collection get(collection): map hasher(identity) u64 => CollectionType<T::AccountId>;
64
65 pub AdminList get(admin_list_collection): map hasher(identity) u64 => Vec<T::AccountId>;65 pub AdminList get(fn admin_list_collection): map hasher(identity) u64 => Vec<T::AccountId>;
6666
67 /// Balance owner per collection map67 /// Balance owner per collection map
68 pub Balance get(balance_count): map hasher(blake2_128_concat) (u64, T::AccountId) => u64;68 pub Balance get(fn balance_count): map hasher(blake2_128_concat) (u64, T::AccountId) => u64;
69 pub ApprovedList get(approved): map hasher(blake2_128_concat) (u64, u64) => Vec<T::AccountId>;69 pub ApprovedList get(fn approved): map hasher(blake2_128_concat) (u64, u64) => Vec<T::AccountId>;
7070
71 pub ItemList get(item_id): map hasher(blake2_128_concat) (u64, u64) => NftItemType<T::AccountId>;71 pub ItemList get(fn item_id): map hasher(blake2_128_concat) (u64, u64) => NftItemType<T::AccountId>;
72 // pub ItemList get(item_id): map hasher(blake2_128_concat) (u64, u64) => NftItemType<T::AccountId>;
73
74 pub ItemListIndex get(item_index): map hasher(blake2_128_concat) u64 => u64;72 pub ItemListIndex get(fn item_index): map hasher(blake2_128_concat) u64 => u64;
75 // pub ItemListIndex get(item_index): map hasher(blake2_128_concat) u64 => u64;73
74 pub AddressTokens get(fn address_tokens): map hasher(blake2_128_concat) (u64, T::AccountId) => Vec<u64>;
76 }75 }
77}76}
7877
82 where81 where
83 AccountId = <T as system::Trait>::AccountId,82 AccountId = <T as system::Trait>::AccountId,
84 {83 {
85 Created(u32, AccountId),84 Created(u64, AccountId),
85 ItemCreated(u64),
86 ItemDestroyed(u64, u64),
86 }87 }
87);88);
8889
110 // returns collection ID111 // returns collection ID
111 #[weight = frame_support::weights::SimpleDispatchInfo::default()]112 #[weight = frame_support::weights::SimpleDispatchInfo::default()]
112 pub fn create_collection(origin, custom_data_sz: u32) -> DispatchResult {113 pub fn create_collection( origin,
114 collection_name: Vec<u16>,
115 collection_description: Vec<u16>,
116 token_prefix: Vec<u8>,
117 custom_data_sz: u32) -> DispatchResult {
118
113 // Anyone can create a collection119 // Anyone can create a collection
114 let who = ensure_signed(origin)?;120 let who = ensure_signed(origin)?;
121
122 // check params
123 let mut name = collection_name.to_vec();
124 name.push(0);
125 ensure!(name.len() <= 64, "Collection name can not be longer than 63 char");
126
127 let mut description = collection_description.to_vec();
128 description.push(0);
129 ensure!(name.len() <= 256, "Collection description can not be longer than 255 char");
130
131 let mut prefix = token_prefix.to_vec();
132 prefix.push(0);
133 ensure!(prefix.len() <= 16, "Token prefix can not be longer than 15 char");
115134
116 // Generate next collection ID135 // Generate next collection ID
117 let next_id = NextCollectionID::get();136 let next_id = NextCollectionID::get()
137 .checked_add(1)
138 .expect("collection id error");
118139
119 NextCollectionID::put(next_id);140 NextCollectionID::put(next_id);
120141
121 // Create new collection142 // Create new collection
122 let new_collection = CollectionType {143 let new_collection = CollectionType {
123 owner: who,144 owner: who.clone(),
145 name: name,
146 description: description,
147 token_prefix: prefix,
124 next_item_id: next_id,148 next_item_id: next_id,
125 custom_data_size: custom_data_sz,149 custom_data_size: custom_data_sz,
126 };150 };
127151
128 // Add new collection to map152 // Add new collection to map
129 <Collection<T>>::insert(next_id, new_collection);153 <Collection<T>>::insert(next_id, new_collection);
154
155 // call event
156 Self::deposit_event(RawEvent::Created(next_id, who.clone()));
130157
131 Ok(())158 Ok(())
132 }159 }
276
249277
250 let current_index = <ItemListIndex>::get(collection_id);278 let current_index = <ItemListIndex>::get(collection_id)
279 .checked_add(1)
280 .expect("Item list index id error");
281
282 Self::add_token_index(collection_id, current_index, new_item.owner.clone())?;
283
251 <ItemListIndex>::insert(collection_id, current_index);284 <ItemListIndex>::insert(collection_id, current_index);
252 <ItemList<T>>::insert((collection_id, current_index), new_item);285 <ItemList<T>>::insert((collection_id, current_index), new_item);
286
287 // call event
288 Self::deposit_event(RawEvent::ItemCreated(collection_id));
253289
254 Ok(())290 Ok(())
255 }291 }
279 }315 }
280 <ItemList<T>>::remove((collection_id, item_id));316 <ItemList<T>>::remove((collection_id, item_id));
317
318 Self::remove_token_index(collection_id, item_id, item.owner.clone())?;
281319
282 // update balance320 // update balance
283 let new_balance = <Balance<T>>::get((collection_id, item.owner.clone())) - 1;321 let new_balance = <Balance<T>>::get((collection_id, item.owner.clone())) - 1;
284 <Balance<T>>::insert((collection_id, item.owner.clone()), new_balance);322 <Balance<T>>::insert((collection_id, item.owner.clone()), new_balance);
323
324 // call event
325 Self::deposit_event(RawEvent::ItemDestroyed(collection_id, item_id));
285326
286 Ok(())327 Ok(())
287 }328 }
319 <Balance<T>>::insert((collection_id, new_owner.clone()), balance_new_owner);360 <Balance<T>>::insert((collection_id, new_owner.clone()), balance_new_owner);
320361
321 // change owner362 // change owner
322 item.owner = new_owner;363 let old_owner = item.owner.clone();
364 item.owner = new_owner.clone();
323 <ItemList<T>>::insert((collection_id, item_id), item);365 <ItemList<T>>::insert((collection_id, item_id), item);
366
367 // update index collection
368 Self::move_token_index(collection_id, item_id, old_owner, new_owner.clone())?;
324369
325 // reset approved list370 // reset approved list
326 let itm: Vec<T::AccountId> = Vec::new();371 let itm: Vec<T::AccountId> = Vec::new();
403}448}
404449
450
451impl<T: Trait> Module<T> {
452 fn add_token_index(collection_id: u64, item_index: u64, owner: T::AccountId) -> DispatchResult {
453
454 let list_exists = <AddressTokens<T>>::contains_key((collection_id, owner.clone()));
455 if list_exists {
456
457 let mut list = <AddressTokens<T>>::get((collection_id, owner.clone()));
458 let item_contains = list.contains(&item_index.clone());
459
460 if !item_contains {
461 list.push(item_index.clone());
462 }
463
464 <AddressTokens<T>>::insert((collection_id, owner.clone()), list);
465
466 } else {
467
468 let mut itm = Vec::new();
469 itm.push(item_index.clone());
470 <AddressTokens<T>>::insert((collection_id, owner), itm);
471 }
472
473 Ok(())
474 }
475
476 fn remove_token_index(collection_id: u64, item_index: u64, owner: T::AccountId) -> DispatchResult {
477
478 let list_exists = <AddressTokens<T>>::contains_key((collection_id, owner.clone()));
479 if list_exists {
480
481 let mut list = <AddressTokens<T>>::get((collection_id, owner.clone()));
482 let item_contains = list.contains(&item_index.clone());
483
484 if item_contains {
485 list.retain(|&item| item != item_index);
486 <AddressTokens<T>>::insert((collection_id, owner), list);
487 }
488 }
489
490 Ok(())
491 }
492
493 fn move_token_index(collection_id: u64, item_index: u64, old_owner: T::AccountId, new_owner: T::AccountId) -> DispatchResult {
494
495 Self::remove_token_index(collection_id, item_index, old_owner)?;
496 Self::add_token_index(collection_id, item_index, new_owner)?;
497
498 Ok(())
499 }
500}
modifiedpallets/nft/src/tests.rsdiffbeforeafterboth
--- a/pallets/nft/src/tests.rs
+++ b/pallets/nft/src/tests.rs
@@ -5,9 +5,14 @@
 #[test]
 fn create_collection_test() {
     new_test_ext().execute_with(|| {
+
+        let col_name1: Vec<u16> = "Test1\0".encode_utf16().collect::<Vec<u16>>();
+        let col_desc1: Vec<u16> = "TestDescription1\0".encode_utf16().collect::<Vec<u16>>();
+        let token_prefix1: Vec<u8> = b"token_prefix1\0".to_vec();
+
         let size = 1024;
         let origin1 = Origin::signed(1);
-        assert_ok!(TemplateModule::create_collection(origin1.clone(), size));
+        assert_ok!(TemplateModule::create_collection(origin1.clone(), col_name1.clone(), col_desc1.clone(), token_prefix1.clone(), size));
         assert_eq!(TemplateModule::collection(1).owner, 1);
     });
 }
@@ -15,10 +20,15 @@
 #[test]
 fn change_collection_owner() {
     new_test_ext().execute_with(|| {
+
+        let col_name1: Vec<u16> = "Test1\0".encode_utf16().collect::<Vec<u16>>();
+        let col_desc1: Vec<u16> = "TestDescription1\0".encode_utf16().collect::<Vec<u16>>();
+        let token_prefix1: Vec<u8> = b"token_prefix1\0".to_vec();
+
         let size = 1024;
         let origin1 = Origin::signed(1);
 
-        assert_ok!(TemplateModule::create_collection(origin1.clone(), size));
+        assert_ok!(TemplateModule::create_collection(origin1.clone(), col_name1.clone(), col_desc1.clone(), token_prefix1.clone(), size));
         assert_ok!(TemplateModule::change_collection_owner(
             origin1.clone(),
             1,
@@ -31,10 +41,15 @@
 #[test]
 fn destroy_collection() {
     new_test_ext().execute_with(|| {
+
+        let col_name1: Vec<u16> = "Test1\0".encode_utf16().collect::<Vec<u16>>();
+        let col_desc1: Vec<u16> = "TestDescription1\0".encode_utf16().collect::<Vec<u16>>();
+        let token_prefix1: Vec<u8> = b"token_prefix1\0".to_vec();
+
         let size = 1024;
         let origin1 = Origin::signed(1);
 
-        assert_ok!(TemplateModule::create_collection(origin1.clone(), size));
+        assert_ok!(TemplateModule::create_collection(origin1.clone(), col_name1.clone(), col_desc1.clone(), token_prefix1.clone(), size));
         assert_ok!(TemplateModule::destroy_collection(origin1.clone(), 1));
     });
 }
@@ -42,11 +57,16 @@
 #[test]
 fn create_item() {
     new_test_ext().execute_with(|| {
+
+        let col_name1: Vec<u16> = "Test1\0".encode_utf16().collect::<Vec<u16>>();
+        let col_desc1: Vec<u16> = "TestDescription1\0".encode_utf16().collect::<Vec<u16>>();
+        let token_prefix1: Vec<u8> = b"token_prefix1\0".to_vec();
+
         let size = 1024;
         let origin1 = Origin::signed(1);
         let origin2 = Origin::signed(2);
 
-        assert_ok!(TemplateModule::create_collection(origin1.clone(), size));
+        assert_ok!(TemplateModule::create_collection(origin1.clone(), col_name1.clone(), col_desc1.clone(), token_prefix1.clone(), size));
         assert_ok!(TemplateModule::add_collection_admin(origin1.clone(), 1, 2));
         assert_ok!(TemplateModule::create_item(
             origin2.clone(),
@@ -62,11 +82,16 @@
 #[test]
 fn burn_item() {
     new_test_ext().execute_with(|| {
+
+        let col_name1: Vec<u16> = "Test1\0".encode_utf16().collect::<Vec<u16>>();
+        let col_desc1: Vec<u16> = "TestDescription1\0".encode_utf16().collect::<Vec<u16>>();
+        let token_prefix1: Vec<u8> = b"token_prefix1\0".to_vec();
+
         let size = 1024;
         let origin1 = Origin::signed(1);
         let origin2 = Origin::signed(2);
 
-        assert_ok!(TemplateModule::create_collection(origin1.clone(), size));
+        assert_ok!(TemplateModule::create_collection(origin1.clone(), col_name1.clone(), col_desc1.clone(), token_prefix1.clone(), size));
         assert_ok!(TemplateModule::add_collection_admin(origin1.clone(), 1, 2));
         assert_ok!(TemplateModule::create_item(
             origin2.clone(),
@@ -91,14 +116,19 @@
 #[test]
 fn add_collection_admin() {
     new_test_ext().execute_with(|| {
+
+        let col_name1: Vec<u16> = "Test1\0".encode_utf16().collect::<Vec<u16>>();
+        let col_desc1: Vec<u16> = "TestDescription1\0".encode_utf16().collect::<Vec<u16>>();
+        let token_prefix1: Vec<u8> = b"token_prefix1\0".to_vec();
+
         let size = 1024;
         let origin1 = Origin::signed(1);
         let origin2 = Origin::signed(2);
         let origin3 = Origin::signed(3);
 
-        assert_ok!(TemplateModule::create_collection(origin1.clone(), size));
-        assert_ok!(TemplateModule::create_collection(origin2.clone(), size));
-        assert_ok!(TemplateModule::create_collection(origin3.clone(), size));
+        assert_ok!(TemplateModule::create_collection(origin1.clone(), col_name1.clone(), col_desc1.clone(), token_prefix1.clone(), size));
+        assert_ok!(TemplateModule::create_collection(origin2.clone(), col_name1.clone(), col_desc1.clone(), token_prefix1.clone(), size));
+        assert_ok!(TemplateModule::create_collection(origin3.clone(), col_name1.clone(), col_desc1.clone(), token_prefix1.clone(), size));
 
         assert_eq!(TemplateModule::collection(1).owner, 1);
         assert_eq!(TemplateModule::collection(2).owner, 2);
@@ -116,14 +146,19 @@
 #[test]
 fn remove_collection_admin() {
     new_test_ext().execute_with(|| {
+
+        let col_name1: Vec<u16> = "Test1\0".encode_utf16().collect::<Vec<u16>>();
+        let col_desc1: Vec<u16> = "TestDescription1\0".encode_utf16().collect::<Vec<u16>>();
+        let token_prefix1: Vec<u8> = b"token_prefix1\0".to_vec();
+
         let size = 1024;
         let origin1 = Origin::signed(1);
         let origin2 = Origin::signed(2);
         let origin3 = Origin::signed(3);
 
-        assert_ok!(TemplateModule::create_collection(origin1.clone(), size));
-        assert_ok!(TemplateModule::create_collection(origin2.clone(), size));
-        assert_ok!(TemplateModule::create_collection(origin3.clone(), size));
+        assert_ok!(TemplateModule::create_collection(origin1.clone(), col_name1.clone(), col_desc1.clone(), token_prefix1.clone(), size));
+        assert_ok!(TemplateModule::create_collection(origin2.clone(), col_name1.clone(), col_desc1.clone(), token_prefix1.clone(), size));
+        assert_ok!(TemplateModule::create_collection(origin3.clone(), col_name1.clone(), col_desc1.clone(), token_prefix1.clone(), size));
 
         assert_eq!(TemplateModule::collection(1).owner, 1);
         assert_eq!(TemplateModule::collection(2).owner, 2);
@@ -149,14 +184,19 @@
 #[test]
 fn balance_of() {
     new_test_ext().execute_with(|| {
+
+        let col_name1: Vec<u16> = "Test1\0".encode_utf16().collect::<Vec<u16>>();
+        let col_desc1: Vec<u16> = "TestDescription1\0".encode_utf16().collect::<Vec<u16>>();
+        let token_prefix1: Vec<u8> = b"token_prefix1\0".to_vec();
+
         let size = 1024;
         let origin1 = Origin::signed(1);
         let origin2 = Origin::signed(2);
         let origin3 = Origin::signed(3);
 
-        assert_ok!(TemplateModule::create_collection(origin1.clone(), size));
-        assert_ok!(TemplateModule::create_collection(origin2.clone(), size));
-        assert_ok!(TemplateModule::create_collection(origin3.clone(), size));
+        assert_ok!(TemplateModule::create_collection(origin1.clone(), col_name1.clone(), col_desc1.clone(), token_prefix1.clone(), size));
+        assert_ok!(TemplateModule::create_collection(origin2.clone(), col_name1.clone(), col_desc1.clone(), token_prefix1.clone(), size));
+        assert_ok!(TemplateModule::create_collection(origin3.clone(), col_name1.clone(), col_desc1.clone(), token_prefix1.clone(), size));
 
         assert_eq!(TemplateModule::collection(1).owner, 1);
         assert_eq!(TemplateModule::collection(2).owner, 2);
@@ -181,14 +221,19 @@
 #[test]
 fn transfer() {
     new_test_ext().execute_with(|| {
+
+        let col_name1: Vec<u16> = "Test1\0".encode_utf16().collect::<Vec<u16>>();
+        let col_desc1: Vec<u16> = "TestDescription1\0".encode_utf16().collect::<Vec<u16>>();
+        let token_prefix1: Vec<u8> = b"token_prefix1\0".to_vec();
+
         let size = 1024;
         let origin1 = Origin::signed(1);
         let origin2 = Origin::signed(2);
         let origin3 = Origin::signed(3);
 
-        assert_ok!(TemplateModule::create_collection(origin1.clone(), size));
-        assert_ok!(TemplateModule::create_collection(origin2.clone(), size));
-        assert_ok!(TemplateModule::create_collection(origin3.clone(), size));
+        assert_ok!(TemplateModule::create_collection(origin1.clone(), col_name1.clone(), col_desc1.clone(), token_prefix1.clone(), size));
+        assert_ok!(TemplateModule::create_collection(origin2.clone(), col_name1.clone(), col_desc1.clone(), token_prefix1.clone(), size));
+        assert_ok!(TemplateModule::create_collection(origin3.clone(), col_name1.clone(), col_desc1.clone(), token_prefix1.clone(), size));
 
         assert_eq!(TemplateModule::collection(1).owner, 1);
         assert_eq!(TemplateModule::collection(2).owner, 2);
@@ -214,14 +259,19 @@
 #[test]
 fn approve() {
     new_test_ext().execute_with(|| {
+
+        let col_name1: Vec<u16> = "Test1\0".encode_utf16().collect::<Vec<u16>>();
+        let col_desc1: Vec<u16> = "TestDescription1\0".encode_utf16().collect::<Vec<u16>>();
+        let token_prefix1: Vec<u8> = b"token_prefix1\0".to_vec();
+
         let size = 1024;
         let origin1 = Origin::signed(1);
         let origin2 = Origin::signed(2);
         let origin3 = Origin::signed(3);
 
-        assert_ok!(TemplateModule::create_collection(origin1.clone(), size));
-        assert_ok!(TemplateModule::create_collection(origin2.clone(), size));
-        assert_ok!(TemplateModule::create_collection(origin3.clone(), size));
+        assert_ok!(TemplateModule::create_collection(origin1.clone(), col_name1.clone(), col_desc1.clone(), token_prefix1.clone(), size));
+        assert_ok!(TemplateModule::create_collection(origin2.clone(), col_name1.clone(), col_desc1.clone(), token_prefix1.clone(), size));
+        assert_ok!(TemplateModule::create_collection(origin3.clone(), col_name1.clone(), col_desc1.clone(), token_prefix1.clone(), size));
 
         assert_eq!(TemplateModule::collection(1).owner, 1);
         assert_eq!(TemplateModule::collection(2).owner, 2);
@@ -243,14 +293,19 @@
 #[test]
 fn get_approved() {
     new_test_ext().execute_with(|| {
+        
+        let col_name1: Vec<u16> = "Test1\0".encode_utf16().collect::<Vec<u16>>();
+        let col_desc1: Vec<u16> = "TestDescription1\0".encode_utf16().collect::<Vec<u16>>();
+        let token_prefix1: Vec<u8> = b"token_prefix1\0".to_vec();
+
         let size = 1024;
         let origin1 = Origin::signed(1);
         let origin2 = Origin::signed(2);
         let origin3 = Origin::signed(3);
 
-        assert_ok!(TemplateModule::create_collection(origin1.clone(), size));
-        assert_ok!(TemplateModule::create_collection(origin2.clone(), size));
-        assert_ok!(TemplateModule::create_collection(origin3.clone(), size));
+        assert_ok!(TemplateModule::create_collection(origin1.clone(), col_name1.clone(), col_desc1.clone(), token_prefix1.clone(), size));
+        assert_ok!(TemplateModule::create_collection(origin2.clone(), col_name1.clone(), col_desc1.clone(), token_prefix1.clone(), size));
+        assert_ok!(TemplateModule::create_collection(origin3.clone(), col_name1.clone(), col_desc1.clone(), token_prefix1.clone(), size));
 
         assert_eq!(TemplateModule::collection(1).owner, 1);
         assert_eq!(TemplateModule::collection(2).owner, 2);
@@ -272,14 +327,19 @@
 #[test]
 fn transfer_from() {
     new_test_ext().execute_with(|| {
+
+        let col_name1: Vec<u16> = "Test1\0".encode_utf16().collect::<Vec<u16>>();
+        let col_desc1: Vec<u16> = "TestDescription1\0".encode_utf16().collect::<Vec<u16>>();
+        let token_prefix1: Vec<u8> = b"token_prefix1\0".to_vec();
+
         let size = 1024;
         let origin1 = Origin::signed(1);
         let origin2 = Origin::signed(2);
         let origin3 = Origin::signed(3);
 
-        assert_ok!(TemplateModule::create_collection(origin1.clone(), size));
-        assert_ok!(TemplateModule::create_collection(origin2.clone(), size));
-        assert_ok!(TemplateModule::create_collection(origin3.clone(), size));
+        assert_ok!(TemplateModule::create_collection(origin1.clone(), col_name1.clone(), col_desc1.clone(), token_prefix1.clone(), size));
+        assert_ok!(TemplateModule::create_collection(origin2.clone(), col_name1.clone(), col_desc1.clone(), token_prefix1.clone(), size));
+        assert_ok!(TemplateModule::create_collection(origin3.clone(), col_name1.clone(), col_desc1.clone(), token_prefix1.clone(), size));
 
         assert_eq!(TemplateModule::collection(1).owner, 1);
         assert_eq!(TemplateModule::collection(2).owner, 2);
@@ -297,3 +357,50 @@
         assert_ok!(TemplateModule::transfer_from(origin1.clone(), 1, 1, 2));
     });
 }
+
+#[test]
+fn index_list() {
+    new_test_ext().execute_with(|| {
+
+        let col_name1: Vec<u16> = "Test1\0".encode_utf16().collect::<Vec<u16>>();
+        let col_desc1: Vec<u16> = "TestDescription1\0".encode_utf16().collect::<Vec<u16>>();
+        let token_prefix1: Vec<u8> = b"token_prefix1\0".to_vec();
+
+        let size = 1024;
+        let origin1 = Origin::signed(1);
+        let origin2 = Origin::signed(2);
+        let origin3 = Origin::signed(3);
+
+        assert_ok!(TemplateModule::create_collection(origin1.clone(), col_name1.clone(), col_desc1.clone(), token_prefix1.clone(), size));
+        assert_ok!(TemplateModule::create_collection(origin2.clone(), col_name1.clone(), col_desc1.clone(), token_prefix1.clone(), size));
+        assert_ok!(TemplateModule::create_collection(origin3.clone(), col_name1.clone(), col_desc1.clone(), token_prefix1.clone(), size));
+
+        assert_eq!(TemplateModule::collection(1).owner, 1);
+        assert_eq!(TemplateModule::collection(2).owner, 2);
+        assert_eq!(TemplateModule::collection(3).owner, 3);
+        // create items
+        assert_ok!(TemplateModule::create_item(
+            origin1.clone(),
+            1,
+            [1, 1, 1].to_vec()
+        ));
+        assert_ok!(TemplateModule::create_item(
+            origin1.clone(),
+            1,
+            [1, 1, 2].to_vec()
+        ));
+        assert_ok!(TemplateModule::create_item(
+            origin1.clone(),
+            1,
+            [1, 2, 3].to_vec()
+        ));
+        assert_eq!(TemplateModule::address_tokens((1, 1)).len(), 3);
+        // burn one
+        assert_ok!(TemplateModule::burn_item(origin1.clone(), 1, 2));
+        assert_eq!(TemplateModule::address_tokens((1, 1)).len(), 2);
+        // burn another one
+        assert_ok!(TemplateModule::burn_item(origin1.clone(), 1, 3));
+        assert_eq!(TemplateModule::address_tokens((1, 1))[0], 1);
+    });
+}
+