public void ActionCommands_InvalidInput_RespondsAsExpected()
{
// arrange
var fireBasic = new MockActionCommand();
var fireParameter = new MockActionCommand();
ICommand parameterCommandInt32 = new ActionCommand<int>(fireParameter.ExecuteParam, fireParameter.CanExecuteParam);
ICommand parameterCommandObject = new ActionCommand<object>((o) => { });
ICommand parameterCommandObjectFunc = new ActionCommand<object>((o) => { }, (o) => { return true; });
// assert
try
{
parameterCommandInt32.CanExecute(null);
Assert.Fail("Expected error");
}
catch (NullReferenceException) { }
try
{
parameterCommandInt32.Execute(null);
Assert.Fail("Expected error");
}
catch (NullReferenceException) { }
parameterCommandObject.Execute(null);
parameterCommandObjectFunc.Execute(null);
Assert.IsTrue(parameterCommandObject.CanExecute(null));
Assert.IsTrue(parameterCommandObjectFunc.CanExecute(null));
}
public void ActionCommands_FireAsExpected()
{
// arrange
var fireBasic = new MockActionCommand();
var fireParameter = new MockActionCommand();
ICommand basicCommand = new ActionCommand(fireBasic.ExecuteNone, fireBasic.CanExecute);
ICommand valueTypeCommand = new ActionCommand<int>(fireParameter.ExecuteParam, fireParameter.CanExecuteParam);
// act
basicCommand.Execute(null);
basicCommand.Execute("n/a input");
valueTypeCommand.Execute(2);
Assert.IsTrue(basicCommand.CanExecute(null));
Assert.IsTrue(basicCommand.CanExecute("any input ignored"));
Assert.IsTrue(valueTypeCommand.CanExecute(1));
// assert
Assert.IsTrue(fireBasic.ExecuteFired);
Assert.IsTrue(fireBasic.TestFired);
Assert.IsTrue(fireParameter.ExecuteFired);
Assert.IsTrue(fireParameter.TestFired);
Assert.AreEqual(2, fireParameter.ObjectsPassedIn.Count);
Assert.AreEqual(3, fireParameter.ObjectsPassedIn.Sum());
}