public async Task AllAsyncShouldReturnCorrectAnimalsByPages() { var db = DbInfrastructure.GetDatabase(); for (var i = 0; i < 50; i++) { await db.AddAsync(new Animal { Name = $"Some random name {i}" }); } await db.SaveChangesAsync(); var animalService = new AnimalService(db); for (var i = 0; i < 10; i++) { var animals = await animalService.AllAsync(i + 1); animals .Should() .HaveCount(WebConstants.AnimalsPerPage); animals .Should() .BeInAscendingOrder(a => a.AnimalClass); } var animalsFromNonExistingPage = await animalService.AllAsync(11); animalsFromNonExistingPage.Should().HaveCount(0); }