public void SubscribeToViewGetTopDishesEvent()
{
var topDishesView = new FakeTopDishesView();
var dishesService = new Mock <IDishesAsyncService>();
var actualInstance = new TopDishesPresenter(topDishesView, dishesService.Object);
Assert.That(topDishesView.ContainsSubscribedMethod("OnGetTopDishes"), Is.True);
}
public void CreateAnInstanceImplementingITopDishesPresenter_WhenParametersAreCorrect()
{
var topDishesView = new Mock <ITopDishesView>();
var dishesService = new Mock <IDishesAsyncService>();
var actualInstance = new TopDishesPresenter(topDishesView.Object, dishesService.Object);
Assert.That(actualInstance, Is.InstanceOf <ITopDishesPresenter>());
}
public void IDishesAsyncServiceField_ShouldBeDeclaredOfCorrectType()
{
var topDishesView = new Mock <ITopDishesView>();
var dishesService = new Mock <IDishesAsyncService>();
var actualInstance = new TopDishesPresenter(topDishesView.Object, dishesService.Object);
var bindingFlags = BindingFlags.NonPublic | BindingFlags.Instance;
var dishesServiceField = typeof(TopDishesPresenter).GetField("dishesService", bindingFlags);
Assert.That(dishesServiceField.FieldType, Is.EqualTo(typeof(IDishesAsyncService)));
}
public void ShouldThrowArgumentExceptionWithCorrectMessage_WhenTopDishesEventArgsDishesCountPropertyIsNegative(int invalidDishesCount)
{
var topDishesView = new Mock <ITopDishesView>();
var dishesService = new Mock <IDishesAsyncService>();
var topDishesPresenter = new TopDishesPresenter(topDishesView.Object, dishesService.Object);
var topDishesEventArgs = new TopDishesEventArgs(invalidDishesCount, true);
Assert.That(
() => topDishesPresenter.OnGetTopDishes(null, topDishesEventArgs),
Throws.InstanceOf <ArgumentException>().With.Message.Contains("dishesCount parameter must be greater than or equal to 0."));
}
public void ShouldSetCorrectValueToIDishesAsyncServiceField()
{
var topDishesView = new Mock <ITopDishesView>();
var dishesService = new Mock <IDishesAsyncService>();
var actualInstance = new TopDishesPresenter(topDishesView.Object, dishesService.Object);
var bindingFlags = BindingFlags.NonPublic | BindingFlags.Instance;
var dishesServiceField = typeof(TopDishesPresenter).GetField("dishesService", bindingFlags);
var dishesServiceFieldValue = dishesServiceField.GetValue(actualInstance);
Assert.That(dishesServiceFieldValue, Is.Not.Null);
}
public void InvokeIDishesAsyncService_GetTopCountDishesByRatingMethodOnceWithCorrectAddSampleDataValue(bool addSampleData)
{
var topDishesView = new Mock <ITopDishesView>();
topDishesView.SetupGet(view => view.Model).Returns(new TopDishesViewModel());
var dishesService = new Mock <IDishesAsyncService>();
var topDishesPresenter = new TopDishesPresenter(topDishesView.Object, dishesService.Object);
var topDishesEventArgs = new TopDishesEventArgs(3, addSampleData);
topDishesPresenter.OnGetTopDishes(null, topDishesEventArgs);
dishesService.Verify(service => service.GetTopCountDishesByRating(It.IsAny <int>(), addSampleData), Times.Once);
}
public void InvokeIDishesAsyncService_GetTopCountDishesByRatingMethodOnceWithCorrectDishesCountValue(int dishesCount)
{
var topDishesView = new Mock <ITopDishesView>();
topDishesView.SetupGet(view => view.Model).Returns(new TopDishesViewModel());
var dishesService = new Mock <IDishesAsyncService>();
var topDishesPresenter = new TopDishesPresenter(topDishesView.Object, dishesService.Object);
var topDishesEventArgs = new TopDishesEventArgs(dishesCount, true);
topDishesPresenter.OnGetTopDishes(null, topDishesEventArgs);
dishesService.Verify(service => service.GetTopCountDishesByRating(dishesCount, It.IsAny <bool>()), Times.Once);
}