public async Task CoursesModelShouldLoadAllCoursesWhenNoCategoryIsSelected() { //Arrange var categories = new ContentfulCollection <Category>(); categories.Items = new List <Category>() { new Category() { Title = "Cat1", Slug = "sluggish" }, new Category() { Title = "Cat5", Slug = "another-slug" } }; var courses = new ContentfulCollection <Course>(); courses.Items = new List <Course>() { new Course() { Title = "Course1", Slug = "bah-slug" }, new Course() { Title = "Cruiser2", Slug = "kah-slug" } }; var client = new Mock <IContentfulClient>(); client.SetupGet(c => c.SerializerSettings).Returns(new JsonSerializerSettings()); client.Setup(c => c.GetEntries(It.IsAny <QueryBuilder <Course> >(), default(CancellationToken))) .Returns(Task.FromResult(courses)); client.Setup(c => c.GetEntriesByType("category", It.IsAny <QueryBuilder <Category> >(), default(CancellationToken))) .Returns(Task.FromResult(categories)); var crumbs = new Mock <IBreadcrumbsManager>(); var localizer = new Mock <IViewLocalizer>(); var model = new CoursesModel(client.Object, crumbs.Object, localizer.Object); //Act await model.OnGet(null); //Assert Assert.Equal(courses, model.Courses); }