public void Test_GetAmountOfFavourites() { //Arrange MockHandler mock = new MockHandler(); Favourite fav1 = new Favourite() { LocationId = 1, Username = "******" }; Favourite fav2 = new Favourite() { LocationId = 1, Username = "******" }; Favourite fav3 = new Favourite() { LocationId = 1, Username = "******" }; mock.Favourites = new List <Favourite> { fav1, fav2, fav3 }; AnalyticsController cont = new AnalyticsController(null, mock); //Act var result = cont.GetAmountOfFavourites(1); //Assert Assert.Equal(3, result); }