public void ShouldDelegateExecuteToSingleRegistrant()
{
TestableCompositeCommand multiCommand = new TestableCompositeCommand();
TestCommand testCommand = new TestCommand();
multiCommand.RegisterCommand(testCommand);
Assert.False(testCommand.ExecuteCalled);
multiCommand.Execute(null);
Assert.True(testCommand.ExecuteCalled);
}
public void ShouldBubbleException()
{
Assert.Throws <DivideByZeroException>(() =>
{
TestableCompositeCommand multiCommand = new TestableCompositeCommand();
BadDivisionCommand testCommand = new BadDivisionCommand();
multiCommand.RegisterCommand(testCommand);
multiCommand.Execute(null);
});
}
public void ShouldDelegateExecuteToSingleRegistrant()
{
TestableCompositeCommand multiCommand = new TestableCompositeCommand();
TestCommand testCommand = new TestCommand();
multiCommand.RegisterCommand(testCommand);
Assert.False(testCommand.ExecuteCalled);
multiCommand.Execute(null);
Assert.True(testCommand.ExecuteCalled);
}
public void ExecuteDoesNotThrowWhenAnExecuteCommandModifiesTheCommandsCollection()
{
TestableCompositeCommand multiCommand = new TestableCompositeCommand();
SelfUnregisterableCommand commandOne = new SelfUnregisterableCommand(multiCommand);
SelfUnregisterableCommand commandTwo = new SelfUnregisterableCommand(multiCommand);
multiCommand.RegisterCommand(commandOne);
multiCommand.RegisterCommand(commandTwo);
multiCommand.Execute(null);
Assert.True(commandOne.ExecutedCalled);
Assert.True(commandTwo.ExecutedCalled);
}
public void ShouldDelegateExecuteToMultipleRegistrants()
{
TestableCompositeCommand multiCommand = new TestableCompositeCommand();
TestCommand testCommandOne = new TestCommand();
TestCommand testCommandTwo = new TestCommand();
multiCommand.RegisterCommand(testCommandOne);
multiCommand.RegisterCommand(testCommandTwo);
Assert.False(testCommandOne.ExecuteCalled);
Assert.False(testCommandTwo.ExecuteCalled);
multiCommand.Execute(null);
Assert.True(testCommandOne.ExecuteCalled);
Assert.True(testCommandTwo.ExecuteCalled);
}
public void UnregisterCommandRemovesFromExecuteDelegation()
{
TestableCompositeCommand multiCommand = new TestableCompositeCommand();
TestCommand testCommandOne = new TestCommand()
{
CanExecuteValue = true
};
multiCommand.RegisterCommand(testCommandOne);
multiCommand.UnregisterCommand(testCommandOne);
Assert.False(testCommandOne.ExecuteCalled);
multiCommand.Execute(null);
Assert.False(testCommandOne.ExecuteCalled);
}
public void ShouldDelegateExecuteToMultipleRegistrants()
{
TestableCompositeCommand multiCommand = new TestableCompositeCommand();
TestCommand testCommandOne = new TestCommand();
TestCommand testCommandTwo = new TestCommand();
multiCommand.RegisterCommand(testCommandOne);
multiCommand.RegisterCommand(testCommandTwo);
Assert.False(testCommandOne.ExecuteCalled);
Assert.False(testCommandTwo.ExecuteCalled);
multiCommand.Execute(null);
Assert.True(testCommandOne.ExecuteCalled);
Assert.True(testCommandTwo.ExecuteCalled);
}
public void ShouldBubbleException()
{
Assert.Throws<DivideByZeroException>(() =>
{
TestableCompositeCommand multiCommand = new TestableCompositeCommand();
BadDivisionCommand testCommand = new BadDivisionCommand();
multiCommand.RegisterCommand(testCommand);
multiCommand.Execute(null);
});
}
public void ExecuteDoesNotThrowWhenAnExecuteCommandModifiesTheCommandsCollection()
{
TestableCompositeCommand multiCommand = new TestableCompositeCommand();
SelfUnregisterableCommand commandOne = new SelfUnregisterableCommand(multiCommand);
SelfUnregisterableCommand commandTwo = new SelfUnregisterableCommand(multiCommand);
multiCommand.RegisterCommand(commandOne);
multiCommand.RegisterCommand(commandTwo);
multiCommand.Execute(null);
Assert.True(commandOne.ExecutedCalled);
Assert.True(commandTwo.ExecutedCalled);
}
public void UnregisterCommandRemovesFromExecuteDelegation()
{
TestableCompositeCommand multiCommand = new TestableCompositeCommand();
TestCommand testCommandOne = new TestCommand() { CanExecuteValue = true };
multiCommand.RegisterCommand(testCommandOne);
multiCommand.UnregisterCommand(testCommandOne);
Assert.False(testCommandOne.ExecuteCalled);
multiCommand.Execute(null);
Assert.False(testCommandOne.ExecuteCalled);
}