public void CommandIsCorrect()
{
// Arrange
var expectedCommand = new DelegatingGuardClauseCommand();
var sut = new ReflectionExceptionUnwrappingCommand(expectedCommand);
// Act
IGuardClauseCommand result = sut.Command;
// Assert
Assert.Equal(expectedCommand, result);
}
public void SutIsContextualCommand()
{
// Fixture setup
var dummyCommand = new DelegatingGuardClauseCommand();
// Exercise system
var sut = new ReflectionExceptionUnwrappingCommand(dummyCommand);
// Verify outcome
Assert.IsAssignableFrom <IGuardClauseCommand>(sut);
// Teardown
}
public void CommandIsCorrect()
{
// Fixture setup
var expectedCommand = new DelegatingGuardClauseCommand();
var sut = new ReflectionExceptionUnwrappingCommand(expectedCommand);
// Exercise system
IGuardClauseCommand result = sut.Command;
// Verify outcome
Assert.Equal(expectedCommand, result);
// Teardown
}
public void RequestedParamNameIsCorrect()
{
const string expected = "foo";
var commandStub = new DelegatingGuardClauseCommand {
RequestedParameterName = expected
};
var sut = new ReflectionExceptionUnwrappingCommand(commandStub);
var actual = sut.RequestedParameterName;
Assert.Equal(expected, actual);
}
public void ContextTypeIsCorrect(Type type)
{
// Arrange
var cmd = new DelegatingGuardClauseCommand {
RequestedType = type
};
var sut = new ReflectionExceptionUnwrappingCommand(cmd);
// Act
var result = sut.RequestedType;
// Assert
Assert.Equal(type, result);
}
public void ExecuteRethrowsNormalException()
{
// Arrange
var cmd = new DelegatingGuardClauseCommand {
OnExecute = v => { throw new InvalidOperationException(); }
};
var sut = new ReflectionExceptionUnwrappingCommand(cmd);
// Act & Assert
var dummyValue = new object();
Assert.Throws <InvalidOperationException>(() =>
sut.Execute(dummyValue));
}
public void ContextTypeIsCorrect(Type type)
{
// Fixture setup
var cmd = new DelegatingGuardClauseCommand {
RequestedType = type
};
var sut = new ReflectionExceptionUnwrappingCommand(cmd);
// Exercise system
var result = sut.RequestedType;
// Verify outcome
Assert.Equal(type, result);
// Teardown
}
public void ExecuteRethrowsNormalException()
{
// Fixture setup
var cmd = new DelegatingGuardClauseCommand {
OnExecute = v => { throw new InvalidOperationException(); }
};
var sut = new ReflectionExceptionUnwrappingCommand(cmd);
// Exercise system and verify outcome
var dummyValue = new object();
Assert.Throws <InvalidOperationException>(() =>
sut.Execute(dummyValue));
// Teardown
}
public void ExecuteUnwrapsAndThrowsInnerExceptionFromTargetInvocationException()
{
// Arrange
var expectedException = new InvalidOperationException();
var cmd = new DelegatingGuardClauseCommand {
OnExecute = v => { throw new TargetInvocationException(expectedException); }
};
var sut = new ReflectionExceptionUnwrappingCommand(cmd);
// Act & Assert
var dummyValue = new object();
var e = Assert.Throws <InvalidOperationException>(() =>
sut.Execute(dummyValue));
Assert.Equal(expectedException, e);
}
public void CreateExceptionReturnsCorrectResult()
{
// Arrange
var value = Guid.NewGuid().ToString();
var expected = new Exception();
var cmd = new DelegatingGuardClauseCommand {
OnCreateException = v => value == v ? expected : new Exception()
};
var sut = new ReflectionExceptionUnwrappingCommand(cmd);
// Act
var result = sut.CreateException(value);
// Assert
Assert.Equal(expected, result);
}
public void ExecuteExecutesDecoratedCommand()
{
// Arrange
var mockVerified = false;
var expectedValue = new object();
var cmd = new DelegatingGuardClauseCommand {
OnExecute = v => mockVerified = expectedValue.Equals(v)
};
var sut = new ReflectionExceptionUnwrappingCommand(cmd);
// Act
sut.Execute(expectedValue);
// Assert
Assert.True(mockVerified, "Mock verified.");
}
public void ExecuteUnwrapsAndThrowsInnerExceptionFromTargetInvocationException()
{
// Fixture setup
var expectedException = new InvalidOperationException();
var cmd = new DelegatingGuardClauseCommand {
OnExecute = v => { throw new TargetInvocationException(expectedException); }
};
var sut = new ReflectionExceptionUnwrappingCommand(cmd);
// Exercise system and verify outcome
var dummyValue = new object();
var e = Assert.Throws <InvalidOperationException>(() =>
sut.Execute(dummyValue));
Assert.Equal(expectedException, e);
// Teardown
}
public void ExecuteExecutesDecoratedCommand()
{
// Fixture setup
var mockVerified = false;
var expectedValue = new object();
var cmd = new DelegatingGuardClauseCommand {
OnExecute = v => mockVerified = expectedValue.Equals(v)
};
var sut = new ReflectionExceptionUnwrappingCommand(cmd);
// Exercise system
sut.Execute(expectedValue);
// Verify outcome
Assert.True(mockVerified, "Mock verified.");
// Teardown
}
public void CreateExceptionReturnsCorrectResult()
{
// Fixture setup
var value = Guid.NewGuid().ToString();
var expected = new Exception();
var cmd = new DelegatingGuardClauseCommand {
OnCreateException = v => value == v ? expected : new Exception()
};
var sut = new ReflectionExceptionUnwrappingCommand(cmd);
// Exercise system
var result = sut.CreateException(value);
// Verify outcome
Assert.Equal(expected, result);
// Teardown
}
/// <summary>
/// Creates a new <see cref="IGuardClauseCommand"/> from the specified
/// <see cref="IGuardClauseCommand"/> that replaces the expansion with one that uses
/// <see cref="ParameterInfo"/> instead of <see cref="Type"/> and supports async method.
/// </summary>
/// <param name="specimenBuilder">The anonymous object creation service used to workaround
/// a problem with guard clause assertions.</param>
/// <param name="command">The <see cref="IGuardClauseCommand"/> that will be executed
/// as part of the assertion.</param>
/// <returns>A new instance of <see cref="IGuardClauseCommand"/> with the newly supplied
/// features.</returns>
/// <exception cref="ArgumentNullException"><paramref name="specimenBuilder"/>, or
/// <paramref name="command"/> is <see langword="null"/>.</exception>
public IGuardClauseCommand CreateExtendedCommand(
ISpecimenBuilder specimenBuilder,
IGuardClauseCommand command)
{
ParameterValidation.IsNotNull(specimenBuilder, nameof(specimenBuilder));
ParameterValidation.IsNotNull(command, nameof(command));
MethodInvokeCommand methodInvokeCommand;
this.TryGetMethodInvokeCommand(command, out methodInvokeCommand);
var expansion = methodInvokeCommand?.Expansion as IndexedReplacement <object>;
IGuardClauseCommand commandToExecute;
if (methodInvokeCommand != null && expansion != null)
{
var recreatedExpansion =
RecreateExpansion(specimenBuilder, methodInvokeCommand.Method, expansion);
var instanceMethod = methodInvokeCommand.Method as InstanceMethod;
var staticMethod = methodInvokeCommand.Method as StaticMethod;
var asyncAttribute =
instanceMethod?.Method?.GetCustomAttribute <AsyncStateMachineAttribute>(false) ??
staticMethod?.Method?.GetCustomAttribute <AsyncStateMachineAttribute>(false);
if (asyncAttribute != null)
{
commandToExecute =
new ReflectionExceptionUnwrappingCommand(new AsyncMethodInvokeCommand(
methodInvokeCommand.Method,
recreatedExpansion,
methodInvokeCommand.ParameterInfo,
this.asyncTaskTimeout));
}
else
{
commandToExecute =
new ReflectionExceptionUnwrappingCommand(new MethodInvokeCommand(
methodInvokeCommand.Method,
recreatedExpansion,
methodInvokeCommand.ParameterInfo));
}
}
else
{
commandToExecute = command;
}
return(commandToExecute);
}
public void CreateExceptionWithFailureReasonReturnsCorrectResult()
{
// Arrange
var value = Guid.NewGuid().ToString();
var failureReason = Guid.NewGuid().ToString();
var inner = new Exception();
var expected = new Exception();
var cmd = new DelegatingGuardClauseCommand
{
OnCreateExceptionWithFailureReason = (v, r, e) => v == value && r == failureReason && e == inner ? expected : new Exception()
};
var sut = new ReflectionExceptionUnwrappingCommand(cmd);
// Act
var result = sut.CreateException(value, failureReason, inner);
// Assert
Assert.Equal(expected, result);
}
public void TryGetMethodInvokeCommandHasTaskTypeMethodInvokeCommandReturnsCommand()
{
var sut = new SutAlias();
var testHelperMethod = typeof(GuardClauseExtensionsTests)
.GetMethod(
nameof(StaticCommandHelperMethod),
BindingFlags.Static | BindingFlags.NonPublic);
var innerCommand = new ReflectionExceptionUnwrappingCommand(new MethodInvokeCommand(
new Mock <IMethod>().Object,
new Mock <IExpansion <object> >().Object,
testHelperMethod.GetParameters().First()));
var command =
(IGuardClauseCommand)Activator.CreateInstance(TaskReturnType, innerCommand);
MethodInvokeCommand methodInvokeCommand;
var actual = sut.TryGetMethodInvokeCommand(command, out methodInvokeCommand);
Assert.True(actual);
Assert.NotNull(methodInvokeCommand);
}