How to test AJAX requests in PHPUnit?

@mallory_cormier 

To test AJAX requests in PHPUnit, you can follow these steps:

1. Set up PHPUnit: Install PHPUnit using Composer or download it from the official website (https://phpunit.de/).
2. Create a test case: Create a new class that extends the PHPUnitFrameworkTestCase class. This class will contain your test methods.
3. Initialize the necessary environment: In the setUp() method of your test case class, initialize any required dependencies or set up the environment for testing AJAX requests.
4. Write test methods: Write individual test methods for different AJAX requests that you want to test. Each test method should start by creating an instance of the HTTP client (such as GuzzleHTTP) to make the AJAX request.
5. Use assertions: In each test method, use PHPUnit assertions to verify the expected behavior of the AJAX request. For example, you can assert the HTTP response code, specific data returned from the AJAX request, or any other relevant properties.
6. Run the tests: Run the PHPUnit command to execute your test case class and see the test results. The command is typically phpunit path/to/your/test/TestClass.php.

Make sure to handle any dependencies or setup required for AJAX requests, such as mocking the server response or setting up a test server that handles AJAX requests. Mocking frameworks like Mockery can be helpful for simulating AJAX responses.

Remember, when testing AJAX requests, you are typically testing the server-side code that handles the AJAX request and not the JavaScript code that initiates it.