public void TodaysBirthDates_Will_Skip_People_Without_Birth_Date() { var dateOfBirth = new DateTime(1950, 11, 11); repository.Add(new Person { Id = 42, DateOfBirthFrom = dateOfBirth, DateOfBirthUntil = dateOfBirth }); repository.Add(new Person { }); var result = (PartialViewResult)controller.BirthDates(dateOfBirth); var model = (IQueryable <LinkablePersonModel>)result.Model; Assert.That(model.Count(), Is.EqualTo(1)); Assert.That(model.First().Id, Is.EqualTo(42)); }