MiscUnitTest.php

<?php

/**
 * @file
 * Definition of Drupal\system\Tests\Bootstrap\MiscUnitTest.
 */
namespace Drupal\system\Tests\Bootstrap;

use Drupal\simpletest\UnitTestBase;

/**
 * Tests miscellaneous functions in bootstrap.inc.
 */
class MiscUnitTest extends UnitTestBase {
  public static function getInfo() {
    return array(
      'name' => 'Miscellaneous bootstrap unit tests',
      'description' => 'Test miscellaneous functions in bootstrap.inc.',
      'group' => 'Bootstrap',
    );
  }

  /**
   * Tests that the drupal_check_memory_limit() function works as expected.
   */
  function testCheckMemoryLimit() {
    $memory_limit = ini_get('memory_limit');

    // Test that a very reasonable amount of memory is available.
    $this
      ->assertTrue(drupal_check_memory_limit('30MB'), '30MB of memory tested available.');

    // Get the available memory and multiply it by two to make it unreasonably
    // high.
    $twice_avail_memory = $memory_limit * 2 . 'MB';

    // The function should always return true if the memory limit is set to -1.
    $this
      ->assertTrue(drupal_check_memory_limit($twice_avail_memory, -1), 'drupal_check_memory_limit() returns TRUE when a limit of -1 (none) is supplied');

    // Test that even though we have 30MB of memory available - the function
    // returns FALSE when given an upper limit for how much memory can be used.
    $this
      ->assertFalse(drupal_check_memory_limit('30MB', '16MB'), 'drupal_check_memory_limit() returns FALSE with a 16MB upper limit on a 30MB requirement.');

    // Test that an equal amount of memory to the amount requested returns TRUE.
    $this
      ->assertTrue(drupal_check_memory_limit('30MB', '30MB'), 'drupal_check_memory_limit() returns TRUE when requesting 30MB on a 30MB requirement.');
  }

}