public void UnregisterCommandDisconnectsCanExecuteChangedDelegate()
{
TestableCompositeCommand multiCommand = new TestableCompositeCommand();
TestCommand testCommandOne = new TestCommand()
{
CanExecuteValue = true
};
multiCommand.RegisterCommand(testCommandOne);
multiCommand.UnregisterCommand(testCommandOne);
multiCommand.CanExecuteChangedRaised = false;
testCommandOne.FireCanExecuteChanged();
Assert.False(multiCommand.CanExecuteChangedRaised);
}
public void ShouldReraiseCanExecuteChangedEvent()
{
TestableCompositeCommand multiCommand = new TestableCompositeCommand();
TestCommand testCommandOne = new TestCommand()
{
CanExecuteValue = true
};
Assert.False(multiCommand.CanExecuteChangedRaised);
multiCommand.RegisterCommand(testCommandOne);
multiCommand.CanExecuteChangedRaised = false;
testCommandOne.FireCanExecuteChanged();
Assert.True(multiCommand.CanExecuteChangedRaised);
}
public void UnregisterCommandDisconnectsCanExecuteChangedDelegate()
{
TestableCompositeCommand multiCommand = new TestableCompositeCommand();
TestCommand testCommandOne = new TestCommand() { CanExecuteValue = true };
multiCommand.RegisterCommand(testCommandOne);
multiCommand.UnregisterCommand(testCommandOne);
multiCommand.CanExecuteChangedRaised = false;
testCommandOne.FireCanExecuteChanged();
Assert.False(multiCommand.CanExecuteChangedRaised);
}
public void ShouldReraiseCanExecuteChangedEventAfterCollect()
{
TestableCompositeCommand multiCommand = new TestableCompositeCommand();
TestCommand testCommandOne = new TestCommand() { CanExecuteValue = true };
Assert.False(multiCommand.CanExecuteChangedRaised);
multiCommand.RegisterCommand(testCommandOne);
multiCommand.CanExecuteChangedRaised = false;
GC.Collect();
testCommandOne.FireCanExecuteChanged();
Assert.True(multiCommand.CanExecuteChangedRaised);
}