phpunit: How do I pass values between tests?

Question

I\'m really running into a brick wall with this. How do you pass class values between tests in phpunit?

Test 1 -> sets value,

Test 2 -> reads value

H

Answer 1

Another option is to use static variables.

Here is an example (for Symfony 4 functional tests):

namespace App\Tests\Controller\Api;

use Symfony\Bundle\FrameworkBundle\Test\WebTestCase;
use Symfony\Component\HttpFoundation\Request;
use Symfony\Component\HttpFoundation\Response;
use Hautelook\AliceBundle\PhpUnit\RefreshDatabaseTrait;
use Symfony\Component\HttpFoundation\AcceptHeader;

class BasicApiTest extends WebTestCase
{
    // This trait provided by HautelookAliceBundle will take care of refreshing the database content to a known state before each test
    use RefreshDatabaseTrait;

    private $client = null;

    /**
     * @var string
     */
    private const APP_TOKEN = 'token-for-tests';

    /**
     * @var string
     */
    private static $app_user__email = 'tester+api+01@localhost';

    /**
     * @var string
     */
    private static $app_user__pass = 'tester+app+01+password';

    /**
     * @var null|string
     */
    private static $app_user__access_token = null;

    public function test__Authentication__Login()
    {
        $this->client->request(
            Request::METHOD_POST,
            '/api/login',
            [],
            [],
            [
                'CONTENT_TYPE' => 'application/json',
                'HTTP_App-Token' => self::APP_TOKEN
            ],
            '{"user":"'.static::$app_user__email.'","pass":"'.static::$app_user__pass.'"}'
        );
        $response = $this->client->getResponse();

        $this->assertEquals(Response::HTTP_OK, $response->getStatusCode());

        $content_type = AcceptHeader::fromString($response->headers->get('Content-Type'));
        $this->assertTrue($content_type->has('application/json'));

        $responseData = json_decode($response->getContent(), true);
        $this->assertArrayHasKey('token', $responseData);

        $this->static = static::$app_user__access_token = $responseData['token'];
    }

    /**
     * @depends test__Authentication__Login
     */
    public function test__SomeOtherTest()
    {
        $this->client->request(
            Request::METHOD_GET,
            '/api/some_endpoint',
            [],
            [],
            [
                'CONTENT_TYPE' => 'application/json',
                'HTTP_App-Token' => self::APP_TOKEN,
                'HTTP_Authorization' => 'Bearer ' . static::$app_user__access_token
            ],
            '{"user":"'.static::$app_user__email.'","pass":"'.static::$app_user__pass.'"}'
        );
        $response = $this->client->getResponse();

        $this->assertEquals(Response::HTTP_OK, $response->getStatusCode());

        $content_type = AcceptHeader::fromString($response->headers->get('Content-Type'));
        $this->assertTrue($content_type->has('application/json'));
        //...
    }
}