public void ShouldDisableButtonIfCanExecuteFalse()
{
var clickableObject = new MockClickableObject();
var command = new MockCommand() { CanExecuteReturnValue = false };
var behavior = new ButtonBaseClickCommandBehavior(clickableObject);
Assert.IsTrue(clickableObject.IsEnabled);
behavior.Command = command;
Assert.IsFalse(clickableObject.IsEnabled);
}
public void ShouldHookUpClickCommandBehaviorWhenSettingProperty()
{
var clickableObject = new MockClickableObject();
var command = new MockCommand();
Click.SetCommand(clickableObject, command);
Assert.IsFalse(command.ExecuteCalled);
clickableObject.RaiseClick();
Assert.IsTrue(command.ExecuteCalled);
Assert.AreSame(command, Click.GetCommand(clickableObject));
}
public void ShouldObserveClickEvent()
{
var clickableObject = new MockClickableObject();
var command = new MockCommand();
var behavior = new ButtonBaseClickCommandBehavior(clickableObject);
behavior.Command = command;
Assert.IsFalse(command.ExecuteCalled);
clickableObject.RaiseClick();
Assert.IsTrue(command.ExecuteCalled);
}
public void WhenChangingProperty_ThenUpdatesCommand()
{
var someControl = new TextBox();
var oldCommand = new MockCommand();
var newCommand = new MockCommand();
var commandAction = new InvokeCommandAction();
commandAction.Attach(someControl);
commandAction.Command = oldCommand;
commandAction.Command = newCommand;
commandAction.Invoke();
Assert.IsTrue(newCommand.ExecuteCalled);
Assert.IsFalse(oldCommand.ExecuteCalled);
}
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 ShouldUpdateCommandOnBehaviorWhenChangingProperty()
{
var clickableObject = new MockClickableObject();
var oldCommand = new MockCommand();
var newCommand = new MockCommand();
Click.SetCommand(clickableObject, oldCommand);
Click.SetCommand(clickableObject, newCommand);
clickableObject.RaiseClick();
Assert.IsTrue(newCommand.ExecuteCalled);
Assert.IsFalse(oldCommand.ExecuteCalled);
}
public void WhenCommandPropertyIsSet_ThenHooksUpCommandBehavior()
{
var someControl = new TextBox();
var commandAction = new InvokeCommandAction();
var command = new MockCommand();
commandAction.Attach(someControl);
commandAction.Command = command;
Assert.IsFalse(command.ExecuteCalled);
commandAction.Invoke();
Assert.IsTrue(command.ExecuteCalled);
Assert.AreSame(command, commandAction.GetValue(InvokeCommandAction.CommandProperty));
}
public void WhenAttachedAfterCommandPropertyIsSetAndInvoked_ThenInvokesCommand()
{
var someControl = new TextBox();
var commandAction = new InvokeCommandAction();
var command = new MockCommand();
commandAction.Command = command;
commandAction.Attach(someControl);
Assert.IsFalse(command.ExecuteCalled);
commandAction.Invoke();
Assert.IsTrue(command.ExecuteCalled);
Assert.AreSame(command, commandAction.GetValue(InvokeCommandAction.CommandProperty));
}
public void ShouldExecuteWithCommandParameter()
{
var clickableObject = new MockClickableObject();
var command = new MockCommand();
var parameter = new object();
Click.SetCommand(clickableObject, command);
Click.SetCommandParameter(clickableObject, parameter);
Assert.IsNull(command.ExecuteParameter);
clickableObject.RaiseClick();
Assert.IsTrue(command.ExecuteCalled);
Assert.IsNotNull(command.ExecuteParameter);
Assert.AreSame(parameter, command.ExecuteParameter);
}
public void ShouldCallCanExecuteOnParameterChange()
{
var clickableObject = new MockClickableObject();
var command = new MockCommand();
var parameter = new object();
Click.SetCommand(clickableObject, command);
Assert.IsNull(command.CanExecuteParameter);
Assert.IsTrue(clickableObject.IsEnabled);
command.CanExecuteReturnValue = false;
Click.SetCommandParameter(clickableObject, parameter);
Assert.IsNotNull(command.CanExecuteParameter);
Assert.AreSame(parameter, command.CanExecuteParameter);
Assert.IsFalse(clickableObject.IsEnabled);
}
public void WhenInvokedWithCommandParameter_ThenPassesCommandParaeterToExecute()
{
var someControl = new TextBox();
var command = new MockCommand();
var parameter = new object();
var commandAction = new InvokeCommandAction();
commandAction.Attach(someControl);
commandAction.Command = command;
commandAction.CommandParameter = parameter;
Assert.IsNull(command.ExecuteParameter);
commandAction.Invoke();
Assert.IsTrue(command.ExecuteCalled);
Assert.IsNotNull(command.ExecuteParameter);
Assert.AreSame(parameter, command.ExecuteParameter);
}
public void WhenDetatched_ThenSetsCommandAndCommandParameterToNull()
{
var someControl = new TextBox();
var command = new MockCommand();
var parameter = new object();
var commandAction = new InvokeCommandAction();
commandAction.Attach(someControl);
commandAction.Command = command;
commandAction.CommandParameter = parameter;
Assert.IsNotNull(commandAction.Command);
Assert.IsNotNull(commandAction.CommandParameter);
commandAction.Detach();
Assert.IsNull(commandAction.Command);
Assert.IsNull(commandAction.CommandParameter);
}
public void ShouldCallCanExecuteWithParameterWhenSettingCommand()
{
var clickableObject = new MockClickableObject();
var command = new MockCommand();
var parameter = new object();
var behavior = new ButtonBaseClickCommandBehavior(clickableObject);
command.CanExecuteReturnValue = false;
behavior.CommandParameter = parameter;
Assert.IsNull(command.CanExecuteParameter);
Assert.IsTrue(clickableObject.IsEnabled);
behavior.Command = command;
Assert.IsNotNull(command.CanExecuteParameter);
Assert.AreSame(parameter, command.CanExecuteParameter);
Assert.IsFalse(clickableObject.IsEnabled);
}
public void ShouldExecuteWithCommandParameter()
{
var clickableObject = new MockClickableObject();
var command = new MockCommand();
var parameter = new object();
var behavior = new ButtonBaseClickCommandBehavior(clickableObject);
behavior.Command = command;
behavior.CommandParameter = parameter;
Assert.IsNull(command.ExecuteParameter);
clickableObject.RaiseClick();
Assert.IsTrue(command.ExecuteCalled);
Assert.IsNotNull(command.ExecuteParameter);
Assert.AreSame(parameter, command.ExecuteParameter);
}
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 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 CommandShouldNotKeepButtonAlive()
{
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();
Assert.IsFalse(controlWeakReference.IsAlive);
GC.KeepAlive(command);
}
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);
}
public void ShouldNotThrowWhenCommandSetToNull()
{
var clickableObject = new MockClickableObject();
var command = new MockCommand();
var behavior = new ButtonBaseClickCommandBehavior(clickableObject);
behavior.Command = command;
behavior.Command = null;
clickableObject.RaiseClick();
}
public void WhenCommandIsSetAndThenBehaviorIsAttached_ThenCommandsCanExecuteIsCalledOnce()
{
var someControl = new TextBox();
var command = new MockCommand();
var commandAction = new InvokeCommandAction();
commandAction.Command = command;
commandAction.Attach(someControl);
Assert.AreEqual(1, command.CanExecuteTimesCalled);
}
public void WhenCommandAndCommandParameterAreSetPriorToBehaviorBeingAttached_ThenCommandIsExecutedCorrectlyOnInvoke()
{
var someControl = new TextBox();
var command = new MockCommand();
var parameter = new object();
var commandAction = new InvokeCommandAction();
commandAction.Command = command;
commandAction.CommandParameter = parameter;
commandAction.Attach(someControl);
commandAction.Invoke();
Assert.IsTrue(command.ExecuteCalled);
}
public void ChangingCommandsShouldExecuteOnNewCommand()
{
var clickableObject = new MockClickableObject();
var originalCommand = new MockCommand() { CanExecuteReturnValue = true };
var newCommand = new MockCommand() { CanExecuteReturnValue = true };
var behavior = new ButtonBaseClickCommandBehavior(clickableObject);
behavior.Command = originalCommand;
clickableObject.RaiseClick();
Assert.IsFalse(newCommand.ExecuteCalled);
behavior.Command = newCommand;
clickableObject.RaiseClick();
Assert.IsTrue(newCommand.ExecuteCalled);
}
public void WhenCommandParameterChanged_ThenUpdatesIsEnabledState()
{
var someControl = new TextBox();
var command = new MockCommand();
var parameter = new object();
var commandAction = new InvokeCommandAction();
commandAction.Attach(someControl);
commandAction.Command = command;
Assert.IsNull(command.CanExecuteParameter);
Assert.IsTrue(someControl.IsEnabled);
command.CanExecuteReturnValue = false;
commandAction.CommandParameter = parameter;
Assert.IsNotNull(command.CanExecuteParameter);
Assert.AreSame(parameter, command.CanExecuteParameter);
Assert.IsFalse(someControl.IsEnabled);
}
