HeadersCacheContextTest.php in Drupal 8

Namespace

Drupal\Tests\Core\Cache\Context

File

core/tests/Drupal/Tests/Core/Cache/Context/HeadersCacheContextTest.php

<?php

namespace Drupal\Tests\Core\Cache\Context;

use Drupal\Core\Cache\Context\HeadersCacheContext;
use Drupal\Tests\UnitTestCase;
use Symfony\Component\HttpFoundation\Request;
use Symfony\Component\HttpFoundation\RequestStack;

/**
 * @coversDefaultClass \Drupal\Core\Cache\Context\HeadersCacheContext
 * @group Cache
 */
class HeadersCacheContextTest extends UnitTestCase {

  /**
   * @covers ::getContext
   *
   * @dataProvider providerTestGetContext
   */
  public function testGetContext($headers, $header_name, $context) {
    $request_stack = new RequestStack();
    $request = Request::create('/', 'GET');

    // Request defaults could change, so compare with default values instead of
    // passed in context value.
    $request->headers
      ->replace($headers);
    $request_stack
      ->push($request);
    $cache_context = new HeadersCacheContext($request_stack);
    $this
      ->assertSame($cache_context
      ->getContext($header_name), $context);
  }

  /**
   * Provides a list of headers and expected cache contexts.
   */
  public function providerTestGetContext() {
    return [
      [
        [],
        NULL,
        '',
      ],
      [
        [],
        'foo',
        '',
      ],
      // Non-empty headers.
      [
        [
          'llama' => 'rocks',
          'alpaca' => '',
          'panda' => 'drools',
          'z' => '0',
        ],
        NULL,
        'alpaca=&llama=rocks&panda=drools&z=0',
      ],
      [
        [
          'llama' => 'rocks',
          'alpaca' => '',
          'panda' => 'drools',
          'z' => '0',
        ],
        'llama',
        'rocks',
      ],
      [
        [
          'llama' => 'rocks',
          'alpaca' => '',
          'panda' => 'drools',
          'z' => '0',
        ],
        'alpaca',
        '?valueless?',
      ],
      [
        [
          'llama' => 'rocks',
          'alpaca' => '',
          'panda' => 'drools',
          'z' => '0',
        ],
        'panda',
        'drools',
      ],
      [
        [
          'llama' => 'rocks',
          'alpaca' => '',
          'panda' => 'drools',
          'z' => '0',
        ],
        'z',
        '0',
      ],
      [
        [
          'llama' => 'rocks',
          'alpaca' => '',
          'panda' => 'drools',
          'z' => '0',
        ],
        'chicken',
        '',
      ],
      // Header value could be an array.
      [
        [
          'z' => [
            '0',
            '1',
          ],
        ],
        NULL,
        'z=0,1',
      ],
      // Values are sorted to minimize cache variations.
      [
        [
          'z' => [
            '1',
            '0',
          ],
          'a' => [],
        ],
        NULL,
        'a=&z=0,1',
      ],
      [
        [
          'a' => [],
          'z' => [
            '1',
            '0',
          ],
        ],
        NULL,
        'a=&z=0,1',
      ],
    ];
  }

}

Classes

Name	Description
HeadersCacheContextTest	@coversDefaultClass \Drupal\Core\Cache\Context\HeadersCacheContext @group Cache