public void AddToCart_ExistingGuidPassed() { var cartID = "17b37a88-c502-45a8-84be-b48ecc205a3e"; string id = "e3656e5b-23df-4ced-a7e4-4b066839f54a"; var mockHttpContext = MockHttpSession.setSessionKey(cartID); _controller.ControllerContext.HttpContext = mockHttpContext.Object; // Act _controller.AddtoCart(id, 1); var okResult = _controller.Get(); var items = Assert.IsType <List <ShoppingCartItemDto> >(okResult.Result); // Assert Assert.Equal(2, items.Count); }