crm.fsf.org/20131203/files/modules/simpletest/tests/lock.test

   1 <?php
   2
   3 /**
   4  * Tests for the lock system.
   5  */
   6 class LockFunctionalTest extends DrupalWebTestCase {
   7
   8   public static function getInfo() {
   9     return array(
  10       'name' => 'Locking framework tests',
  11       'description' => 'Confirm locking works between two separate requests.',
  12       'group' => 'System',
  13     );
  14   }
  15
  16   function setUp() {
  17     parent::setUp('system_test');
  18   }
  19
  20   /**
  21    * Confirm that we can acquire and release locks in two parallel requests.
  22    */
  23   function testLockAcquire() {
  24     $lock_acquired = 'TRUE: Lock successfully acquired in system_test_lock_acquire()';
  25     $lock_not_acquired = 'FALSE: Lock not acquired in system_test_lock_acquire()';
  26     $this->assertTrue(lock_acquire('system_test_lock_acquire'), 'Lock acquired by this request.', 'Lock');
  27     $this->assertTrue(lock_acquire('system_test_lock_acquire'), 'Lock extended by this request.', 'Lock');
  28     lock_release('system_test_lock_acquire');
  29
  30     // Cause another request to acquire the lock.
  31     $this->drupalGet('system-test/lock-acquire');
  32     $this->assertText($lock_acquired, 'Lock acquired by the other request.', 'Lock');
  33     // The other request has finished, thus it should have released its lock.
  34     $this->assertTrue(lock_acquire('system_test_lock_acquire'), 'Lock acquired by this request.', 'Lock');
  35     // This request holds the lock, so the other request cannot acquire it.
  36     $this->drupalGet('system-test/lock-acquire');
  37     $this->assertText($lock_not_acquired, 'Lock not acquired by the other request.', 'Lock');
  38     lock_release('system_test_lock_acquire');
  39
  40     // Try a very short timeout and lock breaking.
  41     $this->assertTrue(lock_acquire('system_test_lock_acquire', 0.5), 'Lock acquired by this request.', 'Lock');
  42     sleep(1);
  43     // The other request should break our lock.
  44     $this->drupalGet('system-test/lock-acquire');
  45     $this->assertText($lock_acquired, 'Lock acquired by the other request, breaking our lock.', 'Lock');
  46     // We cannot renew it, since the other thread took it.
  47     $this->assertFalse(lock_acquire('system_test_lock_acquire'), 'Lock cannot be extended by this request.', 'Lock');
  48
  49     // Check the shut-down function.
  50     $lock_acquired_exit = 'TRUE: Lock successfully acquired in system_test_lock_exit()';
  51     $lock_not_acquired_exit = 'FALSE: Lock not acquired in system_test_lock_exit()';
  52     $this->drupalGet('system-test/lock-exit');
  53     $this->assertText($lock_acquired_exit, 'Lock acquired by the other request before exit.', 'Lock');
  54     $this->assertTrue(lock_acquire('system_test_lock_exit'), 'Lock acquired by this request after the other request exits.', 'Lock');
  55   }
  56 }
  57