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 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 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);
}