public void AddProductAsyncShouldReturnProductCorrectly() { var options = new DbContextOptionsBuilder <IntillegioContext>() .UseInMemoryDatabase(databaseName: "Add_Product_Db") .Options; var dbContext = new IntillegioContext(options); var productBindingModel = new AdminProductBindingModel { Name = "The Empire Strikes Back", Image255X325 = "https://pictures.abebooks.com/isbn/9780345400789-uk.jpg", Price = 12.3M, Image135X135 = "https://i.gr-assets.com/images/S/compressed.photo.goodreads.com/books/1328866630l/555314.jpg" }; var mapper = new Mock <IMapper>(); mapper.Setup(m => m.Map <Product>(productBindingModel)) .Returns(new Product { Name = "The Empire Strikes Back", Image255X325 = "https://pictures.abebooks.com/isbn/9780345400789-uk.jpg", Price = 12.3M, Image135X135 = "https://i.gr-assets.com/images/S/compressed.photo.goodreads.com/books/1328866630l/555314.jpg" }); var service = new ShopService(dbContext, mapper.Object); service.AddProductAsync(productBindingModel); Assert.True(dbContext.Products.Any(n => n.Name == productBindingModel.Name)); Assert.True(dbContext.Products.Any(a => a.Image135X135 == productBindingModel.Image135X135)); Assert.True(dbContext.Products.Any(b => b.Price == productBindingModel.Price)); Assert.True(dbContext.Products.Any(c => c.Image135X135 == productBindingModel.Image135X135)); }