public void Can_Delete_Valid_Products() { // Arrange - create a Product Product prod = new Product { ProductID = 2, Name = "Test" }; // Arrange - create the mock repository Mock<IProductRepository> mock = new Mock<IProductRepository>(); mock.Setup(m => m.Products).Returns(new Product[] { new Product {ProductID = 1, Name = "P1"}, prod, new Product {ProductID = 3, Name = "P3"}, }); // Arrange - create the controller AdminController target = new AdminController(mock.Object); // Act - delete the product target.Delete(prod.ProductID); // Assert - ensure that the repository delete method was // called with the correct Product mock.Verify(m => m.DeleteProduct(prod.ProductID)); }