How do I test a multi-language website with Symfony Panther?

Symfony Panther is a browser testing and web scraping library for PHP that leverages the WebDriver protocol. It allows you to write tests that perform browser automation to navigate through a multi-language website, interact with it, and assert its behavior.

Testing a multi-language website involves:

1. Navigating to the page that offers language selection.
2. Changing the language (by clicking a link, selecting from a dropdown, etc.).
3. Asserting that the content is displayed in the selected language.

Here's a step-by-step guide to using Symfony Panther to test a multi-language website:

1. Install Symfony Panther: If you haven't already installed Symfony Panther, you can do so using Composer:

composer require --dev symfony/panther

1. Create a Test Case: Create a PHP file for your test case, extending from Symfony\Component\Panther\PantherTestCase.

2. Write the Test: Within the test, use Panther's client to navigate and interact with your website.

Here's a basic example to illustrate the process:

<?php

namespace Tests;

use Symfony\Component\Panther\PantherTestCase;

class MultiLanguageTest extends PantherTestCase
{
    public function testChangeLanguage(): void
    {
        // Start the browser and navigate to your website
        $client = static::createPantherClient();
        $client->request('GET', 'http://your-website.com');

        // Find the element that changes the language (e.g., a link or a dropdown)
        // In this example, we're assuming the language toggle is a link with an id "language-switch"
        $crawler = $client->clickLink('Deutsch'); // Example for changing to German

        // Wait for the page to load or for the language switch to occur (if necessary)
        // $client->waitFor('.some-element-that-appears-after-language-change');

        // Assert the content is in German
        // This assertion will depend on the content of your website
        // For example, you might check for the presence of a specific text string
        $this->assertContains('Willkommen', $crawler->filter('body')->text());

        // You can also take a screenshot to visually confirm the result
        $client->takeScreenshot('screenshot.png');
    }
}

1. Run the Test: Execute the test using PHPUnit.

./vendor/bin/phpunit tests/MultiLanguageTest.php

Things to Consider:

• The way you switch languages will depend on how your application implements this feature.
• You may need to use the waitFor method to wait for AJAX requests to complete if the language switch involves asynchronous operations.
• If your application uses cookies or sessions to remember the selected language, you may need to test that the language preference persists across different pages or visits.
• Make sure your test environment has a web server running and that it can serve your Symfony application.
• Depending on the complexity of your application, you might need to log in or perform other actions to reach the language switch.

Please note that the above code is a simple example and may need to be adapted to fit the specific structure and requirements of your multi-language website.