How to use fixtures in PHPUnit?

@denis 

To use fixtures in PHPUnit, follow these steps:

Step 1: Install PHPUnit

• Install PHPUnit by running the following command in your terminal:

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composer require --dev phpunit/phpunit

Step 2: Create a Fixture class

• Create a new class file for your fixture, for example, UserFixture.php.
• In this class, create a method that will insert or prepare the data you want to use in your tests. For example:

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class UserFixture
{
    public static function loadUsers()
    {
        // Insert or prepare users data here
    }
}

Step 3: Load the fixture in your test class

• In your test class, add a setUp method where you load the fixture data. For example:

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class MyTest extends PHPUnitFrameworkTestCase
{
    protected function setUp(): void
    {
        UserFixture::loadUsers();
    }
    
    // Your test methods go here
}

Step 4: Run your tests

• Run your tests using the phpunit command in your terminal:

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./vendor/bin/phpunit

PHPUnit will now load the fixture data before running each test method in your test class.