In PHP e-commerce, how do I write unit tests?

In order to write unit tests for your PHP e-commerce application, you can use testing frameworks such as PHPUnit. Here's a simple example of how to create a unit test for a function that calculates the total price of a shopping cart.


        <?php
        use PHPUnit\Framework\TestCase;

        class ShoppingCartTest extends TestCase {
            public function testCalculateTotal() {
                $cart = new ShoppingCart();
                $cart->addItem(new Product('Product 1', 10.00), 2); // 2 units of Product 1
                $cart->addItem(new Product('Product 2', 20.00), 1); // 1 unit of Product 2

                $this->assertEquals(40.00, $cart->calculateTotal());
            }
        }
        ?>