public void Handle_WhenContextIsNull_ExceptionExpected()
{
var viewModel = TestHelper.CreateWindowTwoViewModel();
var state = new EnterInvalidTextInWindowTwoState(viewModel);
IContext context = null;
// ReSharper disable once ExpressionIsAlwaysNull
Assert.Catch <ArgumentNullException>(() => state.Go(context));
}
public void Handle_WhenEnteredTextIsCorrect_SetExpectedStateToContext()
{
var viewModel = TestHelper.CreateWindowTwoViewModel();
var state = new EnterInvalidTextInWindowTwoState(viewModel);
viewModel.EnteredText = Constants.ExpectedUserInput;
var context = viewModel.Context;
state.Go(context);
Assert.AreEqual(typeof(EnterCorrectTextInWindowTwoState), context.State.GetType());
}
public void Handle_WhenEnteredTextIsCorrect_SetExpectedTextToUserMessage()
{
var viewModel = TestHelper.CreateWindowTwoViewModel();
var state = new EnterInvalidTextInWindowTwoState(viewModel);
viewModel.EnteredText = Constants.ExpectedUserInput;
var context = viewModel.Context;
state.Go(context);
Assert.AreEqual(Constants.ThankYouTextToUser, viewModel.UserMessage);
}
public void Handle_WhenEnteredTextIsCorrect_SetCanExecuteButtonThreeComandToTrue()
{
var viewModel = TestHelper.CreateWindowTwoViewModel();
var state = new EnterInvalidTextInWindowTwoState(viewModel);
viewModel.EnteredText = Constants.ExpectedUserInput;
var context = viewModel.Context;
state.Go(context);
Assert.IsTrue(viewModel.CanExecuteButtonThreeCommand);
}
public void Handle_WhenEnteredTextIsInvalid_SetCanExecuteButtonThreeComandToFalse()
{
var viewModel = TestHelper.CreateWindowTwoViewModel();
var state = new EnterInvalidTextInWindowTwoState(viewModel);
viewModel.EnteredText = "123";
var context = viewModel.Context;
state.Go(context);
Assert.IsFalse(viewModel.CanExecuteButtonThreeCommand);
}
public void Handle_WhenEnteredTextIsInvalid_NotChangeCurrentState()
{
var viewModel = TestHelper.CreateWindowTwoViewModel();
var state = new EnterInvalidTextInWindowTwoState(viewModel);
viewModel.EnteredText = "123";
var context = viewModel.Context;
var expectedState = context.State;
state.Go(context);
Assert.AreEqual(expectedState, context.State);
}