public void InternalCall_Balance_Error()
{
var internalCallMessage = new InternalCallMessage(
uint160.One,
uint160.Zero,
10,
(Gas)(GasPriceList.BaseCost + 100000),
new MethodCall("Test", new object[] { })
);
var state = new Mock <IState>();
// Setup the balance with less than the required amount.
state.Setup(s => s.GetBalance(internalCallMessage.From))
.Returns(internalCallMessage.Amount - 1);
var stateProcessor = new StateProcessor(this.vm.Object, this.addressGenerator.Object);
StateTransitionResult result = stateProcessor.Apply(state.Object, internalCallMessage);
state.Verify(s => s.GetBalance(internalCallMessage.From));
Assert.True(result.IsFailure);
Assert.NotNull(result.Error);
Assert.Null(result.Error.VmError);
Assert.Equal(StateTransitionErrorKind.InsufficientBalance, result.Error.Kind);
Assert.Equal((Gas)0, result.GasConsumed);
}
public void InternalCall_Code_Null()
{
var internalCallMessage = new InternalCallMessage(
uint160.One,
uint160.Zero,
10,
(Gas)(GasPriceList.BaseCost + 100000),
new MethodCall("Test", new object[] { })
);
this.contractStateRoot
.Setup(sr => sr.GetCode(internalCallMessage.To))
.Returns((byte[])null);
var state = new Mock <IState>();
state.Setup(s => s.GetBalance(internalCallMessage.From))
.Returns(internalCallMessage.Amount + 1);
state.SetupGet(s => s.ContractState).Returns(this.contractStateRoot.Object);
var stateProcessor = new StateProcessor(this.vm.Object, this.addressGenerator.Object);
StateTransitionResult result = stateProcessor.Apply(state.Object, internalCallMessage);
this.contractStateRoot.Verify(sr => sr.GetCode(internalCallMessage.To), Times.Once);
Assert.True(result.IsFailure);
Assert.NotNull(result.Error);
Assert.Null(result.Error.VmError);
Assert.Equal(StateTransitionErrorKind.NoCode, result.Error.Kind);
Assert.Equal((Gas)GasPriceList.BaseCost, result.GasConsumed);
}
public void InternalCall_Vm_Error()
{
var vmExecutionResult = VmExecutionResult.Fail(VmExecutionErrorKind.InvocationFailed, "Error");
// Code must have a length to pass precondition checks.
var code = new byte[1];
var typeName = "Test";
var internalCallMessage = new InternalCallMessage(
uint160.One,
uint160.Zero,
10,
(RuntimeObserver.Gas)(GasPriceList.BaseCost + 100000),
new MethodCall("Test", new object[] { })
);
this.vm.Setup(v => v.ExecuteMethod(
It.IsAny <ISmartContractState>(),
It.IsAny <ExecutionContext>(),
internalCallMessage.Method,
code,
typeName))
.Returns(vmExecutionResult);
this.contractStateRoot
.Setup(sr => sr.GetCode(internalCallMessage.To))
.Returns(code);
this.contractStateRoot
.Setup(sr => sr.GetContractType(internalCallMessage.To))
.Returns(typeName);
var state = new Mock <IState>();
state.Setup(s => s.GetBalance(internalCallMessage.From))
.Returns(internalCallMessage.Amount + 1);
state.SetupGet(s => s.ContractState).Returns(this.contractStateRoot.Object);
var stateProcessor = new StateProcessor(this.vm.Object, this.addressGenerator.Object);
StateTransitionResult result = stateProcessor.Apply(state.Object, internalCallMessage);
state.Verify(s => s.CreateSmartContractState(state.Object, It.IsAny <RuntimeObserver.IGasMeter>(), internalCallMessage.To, internalCallMessage, this.contractStateRoot.Object));
this.vm.Verify(
v => v.ExecuteMethod(
It.IsAny <ISmartContractState>(),
It.IsAny <ExecutionContext>(),
internalCallMessage.Method,
code,
typeName),
Times.Once);
Assert.True(result.IsFailure);
Assert.NotNull(result.Error);
Assert.Equal(result.Error.VmError, vmExecutionResult.Error.Message);
Assert.Equal(StateTransitionErrorKind.VmError, result.Error.Kind);
Assert.Equal(GasPriceList.BaseCost, result.GasConsumed);
}
public void InternalCall_Success()
{
// The difference between an internal and an external call:
// - Internal call performs a balance check before execution
// - Internal call appends a new internal transfer if successful
var vmExecutionResult = VmExecutionResult.Success(true, "Test");
var code = new byte[1];
var typeName = "Test";
var internalCallMessage = new InternalCallMessage(
uint160.One,
uint160.Zero,
10,
(Gas)(GasPriceList.BaseCost + 100000),
new MethodCall("Test", new object[] {})
);
this.contractStateRoot
.Setup(sr => sr.GetCode(internalCallMessage.To))
.Returns(code);
this.contractStateRoot
.Setup(sr => sr.GetContractType(internalCallMessage.To))
.Returns(typeName);
this.vm.Setup(v => v.ExecuteMethod(It.IsAny <ISmartContractState>(), internalCallMessage.Method, code, typeName))
.Returns(vmExecutionResult);
var state = new Mock <IState>();
// Return the sent amount + 1
state.Setup(s => s.GetBalance(internalCallMessage.From)).Returns(internalCallMessage.Amount + 1);
state.SetupGet(s => s.ContractState).Returns(this.contractStateRoot.Object);
var stateProcessor = new StateProcessor(this.vm.Object, this.addressGenerator.Object);
StateTransitionResult result = stateProcessor.Apply(state.Object, internalCallMessage);
// Verify we check the balance of the sender first
state.Verify(s => s.GetBalance(internalCallMessage.From));
// Verify we get the code from the destination address' code cache
this.contractStateRoot.Verify(s => s.GetCode(internalCallMessage.To), Times.Once);
// Verify we set up the smart contract state
state.Verify(s => s.CreateSmartContractState(state.Object, It.IsAny <GasMeter>(), internalCallMessage.To, internalCallMessage, this.contractStateRoot.Object));
// Verify the VM was invoked
this.vm.Verify(v => v.ExecuteMethod(It.IsAny <ISmartContractState>(), internalCallMessage.Method, code, typeName), Times.Once);
// Verify the value was added to the internal transfer list
state.Verify(s => s.AddInternalTransfer(It.Is <TransferInfo>(t => t.From == internalCallMessage.From &&
t.To == internalCallMessage.To &&
t.Value == internalCallMessage.Amount)));
Assert.True(result.IsSuccess);
Assert.NotNull(result.Success);
Assert.Equal(internalCallMessage.To, result.Success.ContractAddress);
Assert.Equal(vmExecutionResult.Result, result.Success.ExecutionResult);
Assert.Equal(GasPriceList.BaseCost, result.GasConsumed);
}
