public void Call_Contract_Failure()
        {
            var parameters     = new object[] { };
            var contractTxData = new ContractTxData(1, 1, (Gas)1000, uint160.One, "TestMethod", parameters);

            StateTransitionResult stateTransitionResult = StateTransitionResult.Fail((Gas)100, StateTransitionErrorKind.VmError);

            var    fixture  = new ExecutorFixture(contractTxData);
            IState snapshot = fixture.State.Object.Snapshot();

            fixture.StateProcessor
            .Setup(s => s.Apply(snapshot, It.IsAny <ExternalCallMessage>()))
            .Returns(stateTransitionResult);

            var sut = new ContractExecutor(
                fixture.LoggerFactory,
                fixture.CallDataSerializer.Object,
                fixture.ContractStateRoot.Object,
                fixture.RefundProcessor.Object,
                fixture.TransferProcessor.Object,
                fixture.StateFactory.Object,
                fixture.StateProcessor.Object,
                fixture.ContractPrimitiveSerializer.Object);

            IContractExecutionResult result = sut.Execute(fixture.ContractTransactionContext);

            fixture.CallDataSerializer.Verify(s => s.Deserialize(fixture.Data), Times.Once);

            fixture.StateFactory.Verify(sf => sf
                                        .Create(
                                            fixture.ContractStateRoot.Object,
                                            It.IsAny <IBlock>(),
                                            fixture.ContractTransactionContext.TxOutValue,
                                            fixture.ContractTransactionContext.TransactionHash),
                                        Times.Once);

            // We only apply the message to the snapshot.
            fixture.StateProcessor.Verify(sm => sm.Apply(snapshot, It.Is <ExternalCallMessage>(m =>
                                                                                               m.Method.Name == contractTxData.MethodName &&
                                                                                               m.Method.Parameters == contractTxData.MethodParameters &&
                                                                                               m.Amount == fixture.ContractTransactionContext.TxOutValue &&
                                                                                               m.From == fixture.ContractTransactionContext.Sender &&
                                                                                               m.To == contractTxData.ContractAddress)), Times.Once);

            // We do not transition to the snapshot because the applying the message was unsuccessful.
            fixture.State.Verify(sm => sm.TransitionTo(snapshot), Times.Never);

            // Transfer processor is called with null for new contract address and true for reversion required.
            fixture.TransferProcessor.Verify(t => t
                                             .Process(
                                                 snapshot.ContractState,
                                                 null,
                                                 fixture.ContractTransactionContext,
                                                 snapshot.InternalTransfers,
                                                 true),
                                             Times.Once);

            fixture.RefundProcessor.Verify(t => t
                                           .Process(
                                               contractTxData,
                                               fixture.MempoolFee,
                                               fixture.ContractTransactionContext.Sender,
                                               stateTransitionResult.GasConsumed,
                                               false),
                                           Times.Once);

            Assert.Equal(contractTxData.ContractAddress, result.To);
            Assert.Null(result.NewContractAddress);
            Assert.Equal(stateTransitionResult.Error.VmError, result.ErrorMessage);
            Assert.True(result.Revert);
            Assert.Equal(stateTransitionResult.GasConsumed, result.GasConsumed);
            Assert.Null(result.Return);
            Assert.Equal(fixture.InternalTransaction, result.InternalTransaction);
            Assert.Equal(fixture.Fee, (Money)result.Fee);
            Assert.Equal(fixture.Refund, result.Refund);
            Assert.Equal(fixture.State.Object.GetLogs(fixture.ContractPrimitiveSerializer.Object), result.Logs);
        }
        public void Create_Contract_Failure()
        {
            var contractTxData = new ContractTxData(1, 1, (Gas)1000, new byte[] { 0xAA, 0xBB, 0xCC });

            StateTransitionResult stateTransitionResult = StateTransitionResult.Fail((Gas)100, StateTransitionErrorKind.VmError);

            var    fixture  = new ExecutorFixture(contractTxData);
            IState snapshot = fixture.State.Object.Snapshot();

            fixture.StateProcessor
            .Setup(s => s.Apply(snapshot, It.IsAny <ExternalCreateMessage>()))
            .Returns(stateTransitionResult);

            var sut = new ContractExecutor(
                fixture.LoggerFactory,
                fixture.CallDataSerializer.Object,
                fixture.ContractStateRoot.Object,
                fixture.RefundProcessor.Object,
                fixture.TransferProcessor.Object,
                fixture.StateFactory.Object,
                fixture.StateProcessor.Object,
                fixture.ContractPrimitiveSerializer.Object);

            IContractExecutionResult result = sut.Execute(fixture.ContractTransactionContext);

            fixture.CallDataSerializer.Verify(s => s.Deserialize(fixture.Data), Times.Once);

            fixture.StateFactory.Verify(sf => sf
                                        .Create(
                                            fixture.ContractStateRoot.Object,
                                            It.IsAny <IBlock>(),
                                            fixture.ContractTransactionContext.TxOutValue,
                                            fixture.ContractTransactionContext.TransactionHash),
                                        Times.Once);

            // We only apply the message to the snapshot.
            fixture.StateProcessor.Verify(sm => sm.Apply(fixture.State.Object.Snapshot(),
                                                         It.Is <ExternalCreateMessage>(m =>
                                                                                       m.Code == contractTxData.ContractExecutionCode &&
                                                                                       m.Parameters == contractTxData.MethodParameters)), Times.Once);

            // We do not transition to the snapshot because the applying the message was unsuccessful.
            fixture.State.Verify(sm => sm.TransitionTo(fixture.State.Object.Snapshot()), Times.Never);

            fixture.TransferProcessor.Verify(t => t
                                             .Process(
                                                 snapshot.ContractState,
                                                 null,
                                                 fixture.ContractTransactionContext,
                                                 snapshot.InternalTransfers,
                                                 true),
                                             Times.Once);

            fixture.RefundProcessor.Verify(t => t
                                           .Process(
                                               contractTxData,
                                               fixture.MempoolFee,
                                               fixture.ContractTransactionContext.Sender,
                                               It.IsAny <Gas>(),
                                               false),
                                           Times.Once);

            Assert.Null(result.To);
            Assert.Null(result.NewContractAddress);
            Assert.Equal(stateTransitionResult.Error.VmError, result.ErrorMessage);
            Assert.True(result.Revert);
            Assert.Equal(stateTransitionResult.GasConsumed, result.GasConsumed);
            Assert.Null(result.Return);
            Assert.Equal(fixture.InternalTransaction, result.InternalTransaction);
            Assert.Equal(fixture.Fee, (Money)result.Fee);
            Assert.Equal(fixture.Refund, result.Refund);
            Assert.Equal(fixture.State.Object.GetLogs(fixture.ContractPrimitiveSerializer.Object), result.Logs);
        }
        public void Call_Contract_Success()
        {
            var parameters     = new object[] { };
            var contractTxData = new ContractTxData(1, 1, (Gas)1000, uint160.One, "TestMethod", parameters);

            VmExecutionResult vmExecutionResult = VmExecutionResult.Ok(new object(), null);

            StateTransitionResult stateTransitionResult = StateTransitionResult.Ok((Gas)100, uint160.One, vmExecutionResult.Success.Result);

            var    fixture  = new ExecutorFixture(contractTxData);
            IState snapshot = fixture.State.Object.Snapshot();

            fixture.StateProcessor
            .Setup(s => s.Apply(snapshot, It.IsAny <ExternalCallMessage>()))
            .Returns(stateTransitionResult);

            var sut = new ContractExecutor(
                fixture.LoggerFactory,
                fixture.CallDataSerializer.Object,
                fixture.ContractStateRoot.Object,
                fixture.RefundProcessor.Object,
                fixture.TransferProcessor.Object,
                fixture.StateFactory.Object,
                fixture.StateProcessor.Object,
                fixture.ContractPrimitiveSerializer.Object);

            IContractExecutionResult result = sut.Execute(fixture.ContractTransactionContext);

            fixture.CallDataSerializer.Verify(s => s.Deserialize(fixture.ContractTransactionContext.Data), Times.Once);

            fixture.StateFactory.Verify(sf => sf
                                        .Create(
                                            fixture.ContractStateRoot.Object,
                                            It.IsAny <IBlock>(),
                                            fixture.ContractTransactionContext.TxOutValue,
                                            fixture.ContractTransactionContext.TransactionHash),
                                        Times.Once);

            // We only apply the message to the snapshot.
            fixture.StateProcessor.Verify(sm => sm.Apply(snapshot, It.Is <ExternalCallMessage>(m =>
                                                                                               m.Method.Name == contractTxData.MethodName &&
                                                                                               m.Method.Parameters == contractTxData.MethodParameters &&
                                                                                               m.Amount == fixture.ContractTransactionContext.TxOutValue &&
                                                                                               m.From == fixture.ContractTransactionContext.Sender &&
                                                                                               m.To == contractTxData.ContractAddress)), Times.Once);

            // Must transition to the snapshot.
            fixture.State.Verify(sm => sm.TransitionTo(snapshot), Times.Once);

            fixture.TransferProcessor.Verify(t => t
                                             .Process(
                                                 snapshot.ContractState,
                                                 stateTransitionResult.Success.ContractAddress,
                                                 fixture.ContractTransactionContext,
                                                 snapshot.InternalTransfers,
                                                 false),
                                             Times.Once);

            fixture.RefundProcessor.Verify(t => t
                                           .Process(
                                               contractTxData,
                                               fixture.MempoolFee,
                                               fixture.ContractTransactionContext.Sender,
                                               It.IsAny <Gas>(),
                                               false),
                                           Times.Once);

            Assert.Equal(contractTxData.ContractAddress, result.To);
            Assert.Null(result.NewContractAddress);
            Assert.Null(result.ErrorMessage);
            Assert.False(result.Revert);
            Assert.Equal(stateTransitionResult.GasConsumed, result.GasConsumed);
            Assert.Equal(stateTransitionResult.Success.ExecutionResult, result.Return);
            Assert.Equal(fixture.InternalTransaction, result.InternalTransaction);
            Assert.Equal(fixture.Fee, (Money)result.Fee);
            Assert.Equal(fixture.Refund, result.Refund);
            Assert.Equal(fixture.State.Object.GetLogs(fixture.ContractPrimitiveSerializer.Object), result.Logs);
        }