public void DeattachingFromCommandDoesNotInvokeItWhenClickingIt()
{
var mockCommand = new MockCommand();
MockClickableButton button = new MockClickableButton();
button.SetValue(CommandProperties.CommandProperty, mockCommand);
button.SetValue(CommandProperties.CommandProperty, null);
button.InvokeClick();
Assert.IsFalse(mockCommand.ExecuteCalled);
}
public void ButtonClickExecutesCommand()
{
var mockCommand = new MockCommand();
MockClickableButton button = new MockClickableButton();
button.SetValue(CommandProperties.CommandProperty, mockCommand);
Assert.IsFalse(mockCommand.ExecuteCalled);
button.InvokeClick();
Assert.IsTrue(mockCommand.ExecuteCalled);
}
public void DeattachingFromCommandDoesNotInvokeItWhenClickingIt()
{
var mockCommand = new MockCommand();
MockClickableButton button = new MockClickableButton();
button.SetValue(CommandProperties.CommandProperty, mockCommand);
button.SetValue(CommandProperties.CommandProperty, null);
button.InvokeClick();
Assert.IsFalse(mockCommand.ExecuteCalled);
}
public void ButtonClickExecutesCommand()
{
var mockCommand = new MockCommand();
MockClickableButton button = new MockClickableButton();
button.SetValue(CommandProperties.CommandProperty, mockCommand);
Assert.IsFalse(mockCommand.ExecuteCalled);
button.InvokeClick();
Assert.IsTrue(mockCommand.ExecuteCalled);
}
public void InitialHookupSetButtonAsDisabledIfCanExecuteIsFalse()
{
var mockCommand = new MockCommand();
var button = new Button();
button.IsEnabled = true;
mockCommand.CanExecuteReturnValue = false;
button.SetValue(CommandProperties.CommandProperty, mockCommand);
Assert.IsFalse(button.IsEnabled);
}
public void CommandParameterIsPassedToCommandInvocation()
{
var mockCommand = new MockCommand();
MockClickableButton button = new MockClickableButton();
button.SetValue(CommandProperties.CommandProperty, mockCommand);
object parameter = new object();
button.SetValue(CommandProperties.CommandParameterProperty, parameter);
button.InvokeClick();
Assert.IsNotNull(mockCommand.ExecuteArgumentParameter);
Assert.AreEqual(parameter, mockCommand.ExecuteArgumentParameter);
}
public void WhenDesubscribedDontCallCanExecute()
{
var mockCommand = new MockCommand();
var button = new Button();
button.IsEnabled = true;
button.SetValue(CommandProperties.CommandProperty, mockCommand);
button.SetValue(CommandProperties.CommandProperty, null);
mockCommand.CanExecuteCalled = false;
mockCommand.RaiseCanExecuteChanged();
Assert.IsFalse(mockCommand.CanExecuteCalled);
}
public void CommandParameterIsPassedToCommandInvocation()
{
var mockCommand = new MockCommand();
MockClickableButton button = new MockClickableButton();
button.SetValue(CommandProperties.CommandProperty, mockCommand);
object parameter = new object();
button.SetValue(CommandProperties.CommandParameterProperty, parameter);
button.InvokeClick();
Assert.IsNotNull(mockCommand.ExecuteArgumentParameter);
Assert.AreEqual(parameter, mockCommand.ExecuteArgumentParameter);
}
public void BehaviorDoesNotPreventButtonFromBeingGarbageCollected()
{
var mockCommand = new MockCommand();
var button = new Button();
button.SetValue(CommandProperties.CommandProperty, mockCommand);
WeakReference buttonReference = new WeakReference(button);
button = null;
GC.Collect();
GC.Collect();
GC.WaitForPendingFinalizers();
Assert.IsFalse(buttonReference.IsAlive);
}
public void CanExecuteChangedMakesButtonRequeryCommandAndSetsIsEnabledAppropriately()
{
var mockCommand = new MockCommand();
var button = new Button();
button.IsEnabled = true;
button.SetValue(CommandProperties.CommandProperty, mockCommand);
mockCommand.CanExecuteReturnValue = false;
mockCommand.RaiseCanExecuteChanged();
Assert.IsFalse(button.IsEnabled);
mockCommand.CanExecuteReturnValue = true;
mockCommand.RaiseCanExecuteChanged();
Assert.IsTrue(button.IsEnabled);
}
public void CanExecuteChangedGetsCalledPassingTheCommandParameter()
{
var mockCommand = new MockCommand();
var button = new Button();
button.IsEnabled = true;
button.SetValue(CommandProperties.CommandProperty, mockCommand);
object parameter = new object();
button.SetValue(CommandProperties.CommandParameterProperty, parameter);
mockCommand.CanExecuteArgumentParameter = null;
mockCommand.RaiseCanExecuteChanged();
Assert.IsNotNull(mockCommand.CanExecuteArgumentParameter);
Assert.AreSame(parameter, mockCommand.CanExecuteArgumentParameter);
}
public void CanExecuteChangedMakesButtonRequeryCommandAndSetsIsEnabledAppropriately()
{
var mockCommand = new MockCommand();
var button = new Button();
button.IsEnabled = true;
button.SetValue(CommandProperties.CommandProperty, mockCommand);
mockCommand.CanExecuteReturnValue = false;
mockCommand.RaiseCanExecuteChanged();
Assert.IsFalse(button.IsEnabled);
mockCommand.CanExecuteReturnValue = true;
mockCommand.RaiseCanExecuteChanged();
Assert.IsTrue(button.IsEnabled);
}
public void CanExecuteChangedGetsCalledPassingTheCommandParameter()
{
var mockCommand = new MockCommand();
var button = new Button();
button.IsEnabled = true;
button.SetValue(CommandProperties.CommandProperty, mockCommand);
object parameter = new object();
button.SetValue(CommandProperties.CommandParameterProperty, parameter);
mockCommand.CanExecuteArgumentParameter = null;
mockCommand.RaiseCanExecuteChanged();
Assert.IsNotNull(mockCommand.CanExecuteArgumentParameter);
Assert.AreSame(parameter, mockCommand.CanExecuteArgumentParameter);
}
public void InitialHookupSetButtonAsDisabledIfCanExecuteIsFalse()
{
var mockCommand = new MockCommand();
var button = new Button();
button.IsEnabled = true;
mockCommand.CanExecuteReturnValue = false;
button.SetValue(CommandProperties.CommandProperty, mockCommand);
Assert.IsFalse(button.IsEnabled);
}
public void BehaviorDoesNotPreventButtonFromBeingGarbageCollected()
{
var mockCommand = new MockCommand();
var button = new Button();
button.SetValue(CommandProperties.CommandProperty, mockCommand);
WeakReference buttonReference = new WeakReference(button);
button = null;
GC.Collect();
GC.Collect();
GC.WaitForPendingFinalizers();
Assert.IsFalse(buttonReference.IsAlive);
}
public void WhenDesubscribedDontCallCanExecute()
{
var mockCommand = new MockCommand();
var button = new Button();
button.IsEnabled = true;
button.SetValue(CommandProperties.CommandProperty, mockCommand);
button.SetValue(CommandProperties.CommandProperty, null);
mockCommand.CanExecuteCalled = false;
mockCommand.RaiseCanExecuteChanged();
Assert.IsFalse(mockCommand.CanExecuteCalled);
}
