public async Task Return_RightCollection() { var options = TestUtils.GetOptions(nameof(Return_RightCollection)); using (var arrangeContext = new MoviesCatalogContext(options)) { await arrangeContext.Genres.AddAsync(TestHelper.TestGenre1()); await arrangeContext.Genres.AddAsync(TestHelper.TestGenre2()); await arrangeContext.SaveChangesAsync(); } using (var assertContext = new MoviesCatalogContext(options)) { var sut = new GenreService(assertContext); var genres = await sut.GetAllGenresAsync(); Assert.AreEqual(genres.Count, 2); } }