public async Task TestAddProductSuccess()
{
//Should update Catalog by adding a product to its list
var result = await controller.AddProduct(1, 1);
Assert.IsType <OkObjectResult>(result);
OkObjectResult new_res = (OkObjectResult)await controller.GetCatalog(1);
CatalogDTO new_dto = (CatalogDTO)new_res.Value;
//Information inside the retrived CatalogDTO should be updated
Assert.Equal("Test_Catalog", new_dto.CatalogName);
Assert.Equal("This is a mock Catalog", new_dto.CatalogDescription);
Assert.Equal("06/01/2019", new_dto.Date);
Assert.True(1 == new_dto.CatalogId);
Assert.True(1 == new_dto.products.Count);
//The product inside the list should the intended
ProductDTO pdto = new_dto.products.Find(p => p.name == "Test_Product");
Assert.Equal("Test_Product", pdto.name);
Assert.Equal("This is a mock Product", pdto.description);
Assert.True(1 == pdto.ProductId);
}