public function GarbageCollectionTest::testGarbageCollection

Tests garbage collection.

File

drupal/core/modules/system/lib/Drupal/system/Tests/KeyValueStore/GarbageCollectionTest.php, line 42

Contains Drupal\system\Tests\KeyValueStore\GarbageCollectionTest.

Class

GarbageCollectionTest

Tests garbage collection for DatabaseStorageExpirable.

Namespace

Code

public function testGarbageCollection() {
  $collection = $this
    ->randomName();
  $store = new DatabaseStorageExpirable($collection, Database::getConnection());

  // Insert some items and confirm that they're set.
  for ($i = 0; $i <= 3; $i++) {
    $store
      ->setWithExpire('key_' . $i, $this
      ->randomObject(), rand(500, 100000));
  }
  $this
    ->assertIdentical(sizeof($store
    ->getAll()), 4, 'Four items were written to the storage.');

  // Manually expire the data.
  for ($i = 0; $i <= 3; $i++) {
    db_merge('key_value_expire')
      ->key(array(
      'name' => 'key_' . $i,
      'collection' => $collection,
    ))
      ->fields(array(
      'expire' => REQUEST_TIME - 1,
    ))
      ->execute();
  }

  // Perform a new set operation and then manually unset the object to
  // trigger garbage collection.
  $store
    ->setWithExpire('autumn', 'winter', rand(500, 1000000));
  unset($store);

  // Query the database and confirm that the stale records were deleted.
  $result = db_query('SELECT name, value FROM {key_value_expire} WHERE collection = :collection', array(
    ':collection' => $collection,
  ))
    ->fetchAll();
  $this
    ->assertIdentical(sizeof($result), 1, 'Only one item remains after garbage collection');
}