Issue #3178919 by andregp, AndyF, codebymikey, ankithashetty, Ankit.Gupta,...

<?php

namespace Drupal\Tests\Core\Test;

use Drupal\Tests\UnitTestCase;

use Drupal\Tests\XdebugRequestTrait;

use Symfony\Component\HttpFoundation\Request;

/**

 * Provides tests for the Xdebug request trait.

 *

 * @coversDefaultClass \Drupal\Tests\XdebugRequestTrait

 * @group Test

 */

class XdebugRequestTraitTest extends UnitTestCase {

  use XdebugRequestTrait;

  /**

   * Tests that Xdebug cookies are extracted from a request correctly.

   *

   * @param array $server

   *   The request server array.

   * @param array $expected_cookies

   *   The expected cookies for the request.

   *

   * @covers ::extractCookiesFromRequest

   * @dataProvider extractCookiesDataProvider

   */

  public function testExtractCookiesFromRequest(array $server, array $expected_cookies): void {

    $request = new Request([], [], [], [], [], $server);

    $this->assertSame($expected_cookies, $this->extractCookiesFromRequest($request));

  }

  /**

   * Provides data to test extracting Xdebug cookies from a request.

   *

   * @return iterable

   *   Test scenarios.

   */

  public function extractCookiesDataProvider() {

    yield 'no XDEBUG_CONFIG' => [[], []];

    yield 'empty string XDEBUG_CONFIG' => [['XDEBUG_CONFIG' => ''], []];

    yield 'only space string XDEBUG_CONFIG' => [['XDEBUG_CONFIG' => ' '], []];

    yield 'invalid XDEBUG_CONFIG' => [['XDEBUG_CONFIG' => 'invalid_config'], []];

    yield 'idekey XDEBUG_CONFIG' => [

      ['XDEBUG_CONFIG' => 'idekey=XDEBUG_KEY'],

      ['XDEBUG_SESSION' => ['XDEBUG_KEY']],

    ];

    yield 'idekey with another key XDEBUG_CONFIG' => [

      ['XDEBUG_CONFIG' => 'foo=bar  idekey=XDEBUG_KEY '],

      ['XDEBUG_SESSION' => ['XDEBUG_KEY']],

    ];

  }

}

    }

    elseif ($server->has('XDEBUG_CONFIG')) {

      // $_SERVER['XDEBUG_CONFIG'] has the form "key1=value1 key2=value2 ...".

      $pairs = explode(' ', $server->get('XDEBUG_CONFIG'));

      $pairs = array_filter(explode(' ', $server->get('XDEBUG_CONFIG')), function ($value) {

        return str_contains($value, '=');

      });

      foreach ($pairs as $pair) {

        [$key, $value] = explode('=', $pair);

        [$key, $value] = explode('=', $pair, 2);

        // Account for key-value pairs being separated by multiple spaces.

        if (trim($key, ' ') == 'idekey') {

          $cookies['XDEBUG_SESSION'][] = trim($value, ' ');