Implement native Notary contract

src/Neo/SmartContract/Native/NativeContract.cs

@@ -103,6 +103,11 @@ public CacheEntry GetAllowedMethods(NativeContract native, ApplicationEngine eng
         /// </summary>
         public static OracleContract Oracle { get; } = new();
 
+        /// <summary>
+        /// Gets the instance of the <see cref="Notary"/> class.
+        /// </summary>
+        public static Notary Notary { get; } = new();
+
         #endregion
 
         /// <summary>

tests/Neo.UnitTests/Extensions/NativeContractExtensions.cs

@@ -132,6 +132,11 @@ public static StackItem Call(this NativeContract contract, DataCache snapshot, s
         public static StackItem Call(this NativeContract contract, DataCache snapshot, IVerifiable container, Block persistingBlock, string method, params ContractParameter[] args)
         {
             using var engine = ApplicationEngine.Create(TriggerType.Application, container, snapshot, persistingBlock, settings: TestBlockchain.TheNeoSystem.Settings);
+            return Call(contract, engine, method, args);
+        }
+
+        public static StackItem Call(this NativeContract contract, ApplicationEngine engine, string method, params ContractParameter[] args)
+        {
             using var script = new ScriptBuilder();
             script.EmitDynamicCall(contract.Hash, method, args);
             engine.LoadScript(script.ToArray());

tests/Neo.UnitTests/Extensions/Nep17NativeContractExtensions.cs

@@ -52,12 +52,38 @@ public void SerializeUnsigned(BinaryWriter writer) { }
         }
 
         public static bool Transfer(this NativeContract contract, DataCache snapshot, byte[] from, byte[] to, BigInteger amount, bool signFrom, Block persistingBlock)
+        {
+            return Transfer(contract, snapshot, from, to, amount, signFrom, persistingBlock, null);
+        }
+
+        public static bool Transfer(this NativeContract contract, DataCache snapshot, byte[] from, byte[] to, BigInteger amount, bool signFrom, Block persistingBlock, object data)
         {
             using var engine = ApplicationEngine.Create(TriggerType.Application,
                 new ManualWitness(signFrom ? new UInt160(from) : null), snapshot, persistingBlock, settings: TestBlockchain.TheNeoSystem.Settings);
 
             using var script = new ScriptBuilder();
-            script.EmitDynamicCall(contract.Hash, "transfer", from, to, amount, null);
+            script.EmitDynamicCall(contract.Hash, "transfer", from, to, amount, data);
+            engine.LoadScript(script.ToArray());
+
+            if (engine.Execute() == VMState.FAULT)
+            {
+                throw engine.FaultException;
+            }
+
+            var result = engine.ResultStack.Pop();
+            Assert.IsInstanceOfType(result, typeof(Boolean));
+
+            return result.GetBoolean();
+        }
+
+        public static bool TransferWithTransaction(this NativeContract contract, DataCache snapshot, byte[] from, byte[] to, BigInteger amount, bool signFrom, Block persistingBlock, object data)
+        {
+            using var engine = ApplicationEngine.Create(TriggerType.Application,
+                new Transaction() { Signers = [new() { Account = signFrom ? new(from) : null, Scopes = WitnessScope.Global }], Attributes = [] },
+                snapshot, persistingBlock, settings: TestBlockchain.TheNeoSystem.Settings);
+
+            using var script = new ScriptBuilder();
+            script.EmitDynamicCall(contract.Hash, "transfer", from, to, amount, data);
             engine.LoadScript(script.ToArray());
 
             if (engine.Execute() == VMState.FAULT)

tests/Neo.UnitTests/SmartContract/Native/UT_GasToken.cs

@@ -20,10 +20,10 @@
 using Neo.VM;
 using Neo.Wallets;
 using System;
+using System.Collections.Generic;
 using System.Linq;
 using System.Numerics;
 using System.Threading.Tasks;
-using VMTypes = Neo.VM.Types;
 
 namespace Neo.UnitTests.SmartContract.Native
 {
@@ -154,61 +154,5 @@ internal static StorageKey CreateStorageKey(byte prefix, byte[] key = null)
                 Key = buffer
             };
         }
-
-        [TestMethod]
-        public void Check_OnPersist_NotaryAssisted()
-        {
-            // Hardcode test values.
-            const uint defaultNotaryssestedFeePerKey = 1000_0000;
-            const byte NKeys1 = 4;
-            const byte NKeys2 = 6;
-
-            // Generate two transactions with NotaryAssisted attributes with hardcoded NKeys values.
-            var from = Contract.GetBFTAddress(TestProtocolSettings.Default.StandbyValidators);
-            var tx1 = TestUtils.GetTransaction(from);
-            tx1.Attributes = new TransactionAttribute[] { new NotaryAssisted() { NKeys = NKeys1 } };
-            var netFee1 = 1_0000_0000;
-            tx1.NetworkFee = netFee1;
-            var tx2 = TestUtils.GetTransaction(from);
-            tx2.Attributes = new TransactionAttribute[] { new NotaryAssisted() { NKeys = NKeys2 } };
-            var netFee2 = 2_0000_0000;
-            tx2.NetworkFee = netFee2;
-
-            // Calculate expected Notary nodes reward.
-            var expectedNotaryReward = (NKeys1 + 1) * defaultNotaryssestedFeePerKey + (NKeys2 + 1) * defaultNotaryssestedFeePerKey;
-
-            // Build block to check transaction fee distribution during Gas OnPersist.
-            var persistingBlock = new Block
-            {
-                Header = new Header
-                {
-                    Index = (uint)TestProtocolSettings.Default.CommitteeMembersCount,
-                    MerkleRoot = UInt256.Zero,
-                    NextConsensus = UInt160.Zero,
-                    PrevHash = UInt256.Zero,
-                    Witness = new Witness() { InvocationScript = Array.Empty<byte>(), VerificationScript = Array.Empty<byte>() }
-                },
-                Transactions = new Transaction[] { tx1, tx2 }
-            };
-            var snapshot = _snapshotCache.CloneCache();
-            var script = new ScriptBuilder();
-            script.EmitSysCall(ApplicationEngine.System_Contract_NativeOnPersist);
-            var engine = ApplicationEngine.Create(TriggerType.OnPersist, null, snapshot, persistingBlock, settings: TestBlockchain.TheNeoSystem.Settings);
-
-            // Check that block's Primary balance is 0.
-            ECPoint[] validators = NativeContract.NEO.GetNextBlockValidators(engine.SnapshotCache, engine.ProtocolSettings.ValidatorsCount);
-            var primary = Contract.CreateSignatureRedeemScript(validators[engine.PersistingBlock.PrimaryIndex]).ToScriptHash();
-            Assert.AreEqual(0, NativeContract.GAS.BalanceOf(engine.SnapshotCache, primary));
-
-            // Execute OnPersist script.
-            engine.LoadScript(script.ToArray());
-            Assert.IsTrue(engine.Execute() == VMState.HALT);
-
-            // Check that proper amount of GAS was minted to block's Primary and the rest
-            // will be minted to Notary nodes as a reward once Notary contract is implemented.
-            Assert.AreEqual(2 + 1, engine.Notifications.Count()); // burn tx1 and tx2 network fee + mint primary reward
-            Assert.AreEqual(netFee1 + netFee2 - expectedNotaryReward, engine.Notifications[2].State[2]);
-            Assert.AreEqual(netFee1 + netFee2 - expectedNotaryReward, NativeContract.GAS.BalanceOf(engine.SnapshotCache, primary));
-        }
     }
 }

tests/Neo.UnitTests/SmartContract/Native/UT_NativeContract.cs

@@ -49,6 +49,7 @@ public void TestSetup()
                 {"PolicyContract", """{"id":-7,"updatecounter":0,"hash":"0xcc5e4edd9f5f8dba8bb65734541df7a1c081c67b","nef":{"magic":860243278,"compiler":"neo-core-v3.0","source":"","tokens":[],"script":"EEEa93tnQBBBGvd7Z0AQQRr3e2dAEEEa93tnQBBBGvd7Z0AQQRr3e2dAEEEa93tnQBBBGvd7Z0AQQRr3e2dAEEEa93tnQBBBGvd7Z0A=","checksum":1094259016},"manifest":{"name":"PolicyContract","groups":[],"features":{},"supportedstandards":[],"abi":{"methods":[{"name":"blockAccount","parameters":[{"name":"account","type":"Hash160"}],"returntype":"Boolean","offset":0,"safe":false},{"name":"getAttributeFee","parameters":[{"name":"attributeType","type":"Integer"}],"returntype":"Integer","offset":7,"safe":true},{"name":"getExecFeeFactor","parameters":[],"returntype":"Integer","offset":14,"safe":true},{"name":"getFeePerByte","parameters":[],"returntype":"Integer","offset":21,"safe":true},{"name":"getStoragePrice","parameters":[],"returntype":"Integer","offset":28,"safe":true},{"name":"isBlocked","parameters":[{"name":"account","type":"Hash160"}],"returntype":"Boolean","offset":35,"safe":true},{"name":"setAttributeFee","parameters":[{"name":"attributeType","type":"Integer"},{"name":"value","type":"Integer"}],"returntype":"Void","offset":42,"safe":false},{"name":"setExecFeeFactor","parameters":[{"name":"value","type":"Integer"}],"returntype":"Void","offset":49,"safe":false},{"name":"setFeePerByte","parameters":[{"name":"value","type":"Integer"}],"returntype":"Void","offset":56,"safe":false},{"name":"setStoragePrice","parameters":[{"name":"value","type":"Integer"}],"returntype":"Void","offset":63,"safe":false},{"name":"unblockAccount","parameters":[{"name":"account","type":"Hash160"}],"returntype":"Boolean","offset":70,"safe":false}],"events":[]},"permissions":[{"contract":"*","methods":"*"}],"trusts":[],"extra":null}}"""},
                 {"RoleManagement", """{"id":-8,"updatecounter":0,"hash":"0x49cf4e5378ffcd4dec034fd98a174c5491e395e2","nef":{"magic":860243278,"compiler":"neo-core-v3.0","source":"","tokens":[],"script":"EEEa93tnQBBBGvd7Z0A=","checksum":983638438},"manifest":{"name":"RoleManagement","groups":[],"features":{},"supportedstandards":[],"abi":{"methods":[{"name":"designateAsRole","parameters":[{"name":"role","type":"Integer"},{"name":"nodes","type":"Array"}],"returntype":"Void","offset":0,"safe":false},{"name":"getDesignatedByRole","parameters":[{"name":"role","type":"Integer"},{"name":"index","type":"Integer"}],"returntype":"Array","offset":7,"safe":true}],"events":[{"name":"Designation","parameters":[{"name":"Role","type":"Integer"},{"name":"BlockIndex","type":"Integer"},{"name":"Old","type":"Array"},{"name":"New","type":"Array"}]}]},"permissions":[{"contract":"*","methods":"*"}],"trusts":[],"extra":null}}"""},
                 {"OracleContract", """{"id":-9,"updatecounter":0,"hash":"0xfe924b7cfe89ddd271abaf7210a80a7e11178758","nef":{"magic":860243278,"compiler":"neo-core-v3.0","source":"","tokens":[],"script":"EEEa93tnQBBBGvd7Z0AQQRr3e2dAEEEa93tnQBBBGvd7Z0A=","checksum":2663858513},"manifest":{"name":"OracleContract","groups":[],"features":{},"supportedstandards":[],"abi":{"methods":[{"name":"finish","parameters":[],"returntype":"Void","offset":0,"safe":false},{"name":"getPrice","parameters":[],"returntype":"Integer","offset":7,"safe":true},{"name":"request","parameters":[{"name":"url","type":"String"},{"name":"filter","type":"String"},{"name":"callback","type":"String"},{"name":"userData","type":"Any"},{"name":"gasForResponse","type":"Integer"}],"returntype":"Void","offset":14,"safe":false},{"name":"setPrice","parameters":[{"name":"price","type":"Integer"}],"returntype":"Void","offset":21,"safe":false},{"name":"verify","parameters":[],"returntype":"Boolean","offset":28,"safe":true}],"events":[{"name":"OracleRequest","parameters":[{"name":"Id","type":"Integer"},{"name":"RequestContract","type":"Hash160"},{"name":"Url","type":"String"},{"name":"Filter","type":"String"}]},{"name":"OracleResponse","parameters":[{"name":"Id","type":"Integer"},{"name":"OriginalTx","type":"Hash256"}]}]},"permissions":[{"contract":"*","methods":"*"}],"trusts":[],"extra":null}}"""},
+                {"Notary", """{"id":-10,"updatecounter":0,"hash":"0xc1e14f19c3e60d0b9244d06dd7ba9b113135ec3b","nef":{"magic":860243278,"compiler":"neo-core-v3.0","source":"","tokens":[],"script":"EEEa93tnQBBBGvd7Z0AQQRr3e2dAEEEa93tnQBBBGvd7Z0AQQRr3e2dAEEEa93tnQBBBGvd7Z0A=","checksum":1110259869},"manifest":{"name":"Notary","groups":[],"features":{},"supportedstandards":["NEP-27"],"abi":{"methods":[{"name":"balanceOf","parameters":[{"name":"acc","type":"Hash160"}],"returntype":"Integer","offset":0,"safe":true},{"name":"expirationOf","parameters":[{"name":"acc","type":"Hash160"}],"returntype":"Integer","offset":7,"safe":true},{"name":"getMaxNotValidBeforeDelta","parameters":[],"returntype":"Integer","offset":14,"safe":true},{"name":"lockDepositUntil","parameters":[{"name":"addr","type":"Hash160"},{"name":"till","type":"Integer"}],"returntype":"Boolean","offset":21,"safe":false},{"name":"onNEP17Payment","parameters":[{"name":"from","type":"Hash160"},{"name":"amount","type":"Integer"},{"name":"data","type":"Any"}],"returntype":"Void","offset":28,"safe":false},{"name":"setMaxNotValidBeforeDelta","parameters":[{"name":"value","type":"Integer"}],"returntype":"Void","offset":35,"safe":false},{"name":"verify","parameters":[{"name":"sig","type":"ByteArray"}],"returntype":"Boolean","offset":42,"safe":true},{"name":"withdraw","parameters":[{"name":"from","type":"Hash160"},{"name":"to","type":"Hash160"}],"returntype":"Boolean","offset":49,"safe":false}],"events":[]},"permissions":[{"contract":"*","methods":"*"}],"trusts":[],"extra":null}}"""}
             };
         }