public void NotAlterTheExceptionStackTraceOnThrownExceptions()
{
// Arrange
var ioc = new InversionOfControl();
ioc.Register <ICommandMediator, CommandMediator>();
ioc.Register <ICommandHandler <ExplodingTestCommand, UnitType>, ExplodingTestCommandHandler>();
var mediator = new CommandMediator(ioc.Resolve);
const string ExpectedExceptionMessage = "Kaboom!";
try
{
mediator.Submit(new ExplodingTestCommand {
ExceptionMessage = ExpectedExceptionMessage
});
}
catch (Exception ex)
{
var stackTrace = new StackTrace(ex);
var topFrame = stackTrace.GetFrame(0);
Assert.AreEqual(typeof(ExplodingTestCommandHandler), topFrame.GetMethod().DeclaringType);
}
}
public void ThrowCommandHandlerNotFoundExceptionGivenNoHandlerIsRegisteredAndThrowExceptionIsTrue()
{
// Arrange
var ioc = new InversionOfControl();
ioc.Register <ICommandHandler <DebugWriteCommand>, DebugWriteCommandHandler>();
var mediator = new CommandMediator(ioc.Resolve);
const string StringToWrite = "This is a test!";
// Act & Assert
Assert.Throws <CommandHandlerNotFoundException>(() => mediator.Submit(new DebugWriteCommand {
TextToWrite = StringToWrite
}));
}
public void ThrowExceptionForGivenCommandGivenCommandThrowsExceptionAndThrowExceptionsIsTrue()
{
// Arrange
var ioc = new InversionOfControl();
ioc.Register <ICommandMediator, CommandMediator>();
ioc.Register <ICommandHandler <ExplodingTestCommand, UnitType>, ExplodingTestCommandHandler>();
var mediator = new CommandMediator(ioc.Resolve);
const string ExpectedExceptionMessage = "Kaboom!";
// Act & Assert
Assert.Throws <Exception>(() => mediator.Submit(new ExplodingTestCommand {
ExceptionMessage = ExpectedExceptionMessage
}));
}
public void ReturnResponseWithExecutionResultSetToFailedGivenNoHandlerIsRegisteredAndThrowExceptionIsFalse()
{
// Arrange
var ioc = new InversionOfControl();
ioc.Register <ICommandHandler <DebugWriteCommand>, DebugWriteCommandHandler>();
var mediator = new CommandMediator(ioc.Resolve, false);
const string StringToWrite = "This is a test!";
// Act
var response = mediator.Submit(new DebugWriteCommand {
TextToWrite = StringToWrite
});
// Assert
Assert.That(response.CommandExecutionResult.Equals(CommandExecutionResult.Failed));
}
public void ReturnResponseWithExecutionTime()
{
// Arrange
var ioc = new InversionOfControl();
ioc.Register <ICommandMediator, CommandMediator>();
ioc.Register <ICommandHandler <DebugWriteCommand, UnitType>, DebugWriteCommandHandler>();
var mediator = new CommandMediator(ioc.Resolve);
const string StringToWrite = "This is a test!";
// Act
var response = mediator.Submit(new DebugWriteCommand {
TextToWrite = StringToWrite
});
// Assert
Assert.GreaterOrEqual(response.ExecutionTimeInMilliseconds, 50);
}
public void ReturnResponseForCommandGivenHandlerIsRegistered()
{
// Arrange
var ioc = new InversionOfControl();
ioc.Register <ICommandMediator, CommandMediator>();
ioc.Register <ICommandHandler <DebugWriteCommand, UnitType>, DebugWriteCommandHandler>();
var mediator = new CommandMediator(ioc.Resolve);
const string StringToWrite = "This is a test!";
// Act
var response = mediator.Submit(new DebugWriteCommand {
TextToWrite = StringToWrite
});
// Assert
Assert.NotNull(response);
}
public void ReturnResponseWithExecutionResultSetToFailedGivenCommandThrowsException()
{
// Arrange
var ioc = new InversionOfControl();
ioc.Register <ICommandMediator, CommandMediator>();
ioc.Register <ICommandHandler <ExplodingTestCommand, UnitType>, ExplodingTestCommandHandler>();
var mediator = new CommandMediator(ioc.Resolve, false);
const string ExpectedExceptionMessage = "Kaboom!";
// Act & Assert
var response = mediator.Submit(new ExplodingTestCommand {
ExceptionMessage = ExpectedExceptionMessage
});
// Assert
Assert.That(response.CommandExecutionResult.Equals(CommandExecutionResult.Failed));
}
public void ReturnResponseWithExceptionForCommandGivenCommandThrowsExceptionAndThrowExceptionIsFalse()
{
// Arrange
var ioc = new InversionOfControl();
ioc.Register <ICommandMediator, CommandMediator>();
ioc.Register <ICommandHandler <ExplodingTestCommand, UnitType>, ExplodingTestCommandHandler>();
var mediator = new CommandMediator(ioc.Resolve, false);
const string ExpectedExceptionMessage = "Kaboom!";
// Act & Assert
var response = mediator.Submit(new ExplodingTestCommand {
ExceptionMessage = ExpectedExceptionMessage
});
// Assert
Assert.NotNull(response.Exception);
Assert.That(response.Exception.Message.Equals(ExpectedExceptionMessage));
}
public void ReturnResponseWithValidationResultsGivenCommandFailsValidation()
{
// Arrange
var ioc = new InversionOfControl();
ioc.Register <ICommandMediator, CommandMediator>();
ioc.Register <ICommandHandler <DebugWriteWithValidationCommand, UnitType>, DebugWriteWithValidationCommandHandler>();
var mediator = new CommandMediator(ioc.Resolve);
const string ExpectedValidationMessage = "You must supply a value for TextToWrite!";
// Act & Assert
var response = mediator.Submit(new DebugWriteWithValidationCommand()
{
TextToWrite = "Blarg"
});
// Assert
Assert.That(response.CommandExecutionResult.Equals(CommandExecutionResult.Failed));
Assert.That(response.ValidationResults.Any().IsTrue());
Assert.That(response.ValidationResults.First().ErrorMessage.Equals(ExpectedValidationMessage));
}
