ClearTest.php

<?php

/**
 * @file
 * Definition of Drupal\system\Tests\Cache\ClearTest.
 */
namespace Drupal\system\Tests\Cache;


/**
 * Tests cache clearing methods.
 */
class ClearTest extends CacheTestBase {
  public static function getInfo() {
    return array(
      'name' => 'Cache clear test',
      'description' => 'Check our clearing is done the proper way.',
      'group' => 'Cache',
    );
  }
  function setUp() {
    $this->default_bin = 'page';
    $this->default_value = $this
      ->randomName(10);
    parent::setUp();
  }

  /**
   * Tests drupal_flush_all_caches().
   */
  function testFlushAllCaches() {

    // Create cache entries for each flushed cache bin.
    $bins = module_invoke_all('cache_flush');
    $this
      ->assertTrue($bins, 'hook_cache_flush() returned bins to flush.');
    $bins = array_merge($bins, array(
      'menu',
    ));
    foreach ($bins as $id => $bin) {
      $cid = 'test_cid_clear' . $id;
      cache($bin)
        ->set($cid, $this->default_value);
    }

    // Remove all caches then make sure that they are cleared.
    drupal_flush_all_caches();
    foreach ($bins as $id => $bin) {
      $cid = 'test_cid_clear' . $id;
      $this
        ->assertFalse($this
        ->checkCacheExists($cid, $this->default_value, $bin), format_string('All cache entries removed from @bin.', array(
        '@bin' => $bin,
      )));
    }
  }

}