public void ShouldReEnableButtonIfCanExecuteChangedRaises()
{
var clickableObject = new MockClickableObject();
var mockCommand = new MockCommand() { CanExecuteReturnValue = false };
var behavior = new ButtonBaseClickCommandBehavior(clickableObject);
behavior.Command = mockCommand;
Assert.IsFalse(clickableObject.IsEnabled);
mockCommand.CanExecuteReturnValue = true;
mockCommand.RaiseCanExecuteChanged();
Assert.IsTrue(clickableObject.IsEnabled);
}
public void DisposedControlDoesNotThrowOnCanExecuteChanged()
{
var clickableObject = new MockClickableObject();
var command = new MockCommand();
var behavior = new ButtonBaseClickCommandBehavior(clickableObject);
behavior.Command = command;
WeakReference controlWeakReference = new WeakReference(clickableObject);
clickableObject = null;
behavior = null;
GC.Collect();
command.CanExecuteReturnValue = false;
command.RaiseCanExecuteChanged();
}
public void DisposedControlStopsMonitoringCommandAfterFirstCanExecuteChanged()
{
var clickableObject = new MockClickableObject();
var command = new MockCommand();
var behavior = new ButtonBaseClickCommandBehavior(clickableObject);
behavior.Command = command;
clickableObject = null;
WeakReference commandReference = new WeakReference(command);
GC.Collect();
command.CanExecuteReturnValue = false;
command.RaiseCanExecuteChanged();
command = null;
GC.Collect();
Assert.IsFalse(commandReference.IsAlive);
}
public void ShouldNotMonitorCanExecuteChangedOnDisconnectedCommand()
{
var clickableObject = new MockClickableObject();
var command = new MockCommand();
var behavior = new ButtonBaseClickCommandBehavior(clickableObject);
behavior.Command = command;
behavior.Command = null;
Assert.IsTrue(clickableObject.IsEnabled);
command.CanExecuteReturnValue = false;
command.RaiseCanExecuteChanged();
Assert.IsTrue(clickableObject.IsEnabled);
}