function QueueTestCase::testQueue

Queues and dequeues a set of items to check the basic queue functionality.

File

drupal/modules/system/system.test, line 2036

Tests for system.module.

Class

QueueTestCase

Test the basic queue functionality.

Code

function testQueue() {

  // Create two queues.
  $queue1 = DrupalQueue::get($this
    ->randomName());
  $queue1
    ->createQueue();
  $queue2 = DrupalQueue::get($this
    ->randomName());
  $queue2
    ->createQueue();

  // Create four items.
  $data = array();
  for ($i = 0; $i < 4; $i++) {
    $data[] = array(
      $this
        ->randomName() => $this
        ->randomName(),
    );
  }

  // Queue items 1 and 2 in the queue1.
  $queue1
    ->createItem($data[0]);
  $queue1
    ->createItem($data[1]);

  // Retrieve two items from queue1.
  $items = array();
  $new_items = array();
  $items[] = $item = $queue1
    ->claimItem();
  $new_items[] = $item->data;
  $items[] = $item = $queue1
    ->claimItem();
  $new_items[] = $item->data;

  // First two dequeued items should match the first two items we queued.
  $this
    ->assertEqual($this
    ->queueScore($data, $new_items), 2, 'Two items matched');

  // Add two more items.
  $queue1
    ->createItem($data[2]);
  $queue1
    ->createItem($data[3]);
  $this
    ->assertTrue($queue1
    ->numberOfItems(), 'Queue 1 is not empty after adding items.');
  $this
    ->assertFalse($queue2
    ->numberOfItems(), 'Queue 2 is empty while Queue 1 has items');
  $items[] = $item = $queue1
    ->claimItem();
  $new_items[] = $item->data;
  $items[] = $item = $queue1
    ->claimItem();
  $new_items[] = $item->data;

  // All dequeued items should match the items we queued exactly once,
  // therefore the score must be exactly 4.
  $this
    ->assertEqual($this
    ->queueScore($data, $new_items), 4, 'Four items matched');

  // There should be no duplicate items.
  $this
    ->assertEqual($this
    ->queueScore($new_items, $new_items), 4, 'Four items matched');

  // Delete all items from queue1.
  foreach ($items as $item) {
    $queue1
      ->deleteItem($item);
  }

  // Check that both queues are empty.
  $this
    ->assertFalse($queue1
    ->numberOfItems(), 'Queue 1 is empty');
  $this
    ->assertFalse($queue2
    ->numberOfItems(), 'Queue 2 is empty');
}