// Cities with correct id thus does exist public void TestCityExists() { var cities = new List <City> { new City { Id = 1, Name = "Richmond", Description = "Small" }, new City { Id = 2, Name = "Vancouver", Description = "Big" } }.AsQueryable(); var mockSet = new Mock <DbSet <City> >(); mockSet.As <IQueryable <City> >().Setup(m => m.Provider).Returns(cities.Provider); mockSet.As <IQueryable <City> >().Setup(m => m.Expression).Returns(cities.Expression); mockSet.As <IQueryable <City> >().Setup(m => m.ElementType).Returns(cities.ElementType); var mockContext = new Mock <CityInfoContext>(); mockContext.Setup(m => m.Cities).Returns(mockSet.Object); var repo = new CityInfoRepository(mockContext.Object); Assert.True(repo.CityExists(1)); }
// No cities thus does not exist public void TestCityExistsNoCities() { var cities = new List <City> { }.AsQueryable(); var mockSet = new Mock <DbSet <City> >(); mockSet.As <IQueryable <City> >().Setup(m => m.Provider).Returns(cities.Provider); mockSet.As <IQueryable <City> >().Setup(m => m.Expression).Returns(cities.Expression); mockSet.As <IQueryable <City> >().Setup(m => m.ElementType).Returns(cities.ElementType); var mockContext = new Mock <CityInfoContext>(); mockContext.Setup(m => m.Cities).Returns(mockSet.Object); var repo = new CityInfoRepository(mockContext.Object); Assert.False(repo.CityExists(1)); }