system.test

<?php
// $Id$

/**
 * Helper class for module test cases.
 */
class ModuleTestCase extends DrupalWebTestCase {
  protected $admin_user;

  function setUp() {
    parent::setUp('system_test');

    $this->admin_user = $this->drupalCreateUser(array('access administration pages', 'administer site configuration'));
    $this->drupalLogin($this->admin_user);
  }

  /**
   * Assert there are tables that begin with the specified base table name.
   *
   * @param $base_table
   *   Beginning of table name to look for.
   * @param $count
   *   (optional) Whether or not to assert that there are tables that match the
   *   specified base table. Defaults to TRUE.
   */
  function assertTableCount($base_table, $count = TRUE) {
    $tables = db_find_tables(Database::getConnection()->prefixTables('{' . $base_table . '}') . '%');

    if ($count) {
      return $this->assertTrue($tables, t('Tables matching "@base_table" found.', array('@base_table' => $base_table)));
    }
    return $this->assertFalse($tables, t('Tables matching "@base_table" not found.', array('@base_table' => $base_table)));
  }

  /**
   * Assert the list of modules are enabled or disabled.
   *
   * @param $modules
   *   Module list to check.
   * @param $enabled
   *   Expected module state.
   */
  function assertModules(array $modules, $enabled) {
    module_list(TRUE);
    foreach ($modules as $module) {
      if ($enabled) {
        $message = 'Module "@module" is enabled.';
      }
      else {
        $message = 'Module "@module" is not enabled.';
      }
      $this->assertEqual(module_exists($module), $enabled, t($message, array('@module' => $module)));
    }
  }

  /**
   * Verify a log entry was entered for a module's status change.
   * Called in the same way of the expected original watchdog() execution.
   *
   * @param $type
   *   The category to which this message belongs.
   * @param $message
   *   The message to store in the log. Keep $message translatable
   *   by not concatenating dynamic values into it! Variables in the
   *   message should be added by using placeholder strings alongside
   *   the variables argument to declare the value of the placeholders.
   *   See t() for documentation on how $message and $variables interact.
   * @param $variables
   *   Array of variables to replace in the message on display or
   *   NULL if message is already translated or not possible to
   *   translate.
   * @param $severity
   *   The severity of the message, as per RFC 3164.
   * @param $link
   *   A link to associate with the message.
   */
  function assertLogMessage($type, $message, $variables = array(), $severity = WATCHDOG_NOTICE, $link = '') {
    $count = db_select('watchdog', 'w')
      ->condition('type', $type)
      ->condition('message', $message)
      ->condition('variables', serialize($variables))
      ->condition('severity', $severity)
      ->condition('link', $link)
      ->countQuery()
      ->execute()
      ->fetchField();
    $this->assertTrue($count > 0, t('watchdog table contains @count rows for @message', array('@count' => $count, '@message' => $message)));
  }
}

/**
 * Test module enabling/disabling functionality.
 */
class EnableDisableTestCase extends ModuleTestCase {
  public static function getInfo() {
    return array(
      'name' => 'Enable/disable modules',
      'description' => 'Enable/disable core module and confirm table creation/deletion.',
      'group' => 'Module',
    );
  }

  /**
   * Enable a module, check the database for related tables, disable module,
   * check for related tables, uninstall module, check for related tables.
   * Also check for invocation of the hook_module_action hook.
   */
  function testEnableDisable() {
    // Enable aggregator, and check tables.
    $this->assertModules(array('aggregator'), FALSE);
    $this->assertTableCount('aggregator', FALSE);

    // Install (and enable) aggregator module.
    $edit = array();
    $edit['modules[Core][aggregator][enable]'] = 'aggregator';
    $edit['modules[Core][forum][enable]'] = 'forum';
    $this->drupalPost('admin/structure/modules', $edit, t('Save configuration'));
    $this->assertText(t('The configuration options have been saved.'), t('Modules status has been updated.'));

    // Check that hook_modules_installed and hook_modules_enabled hooks were invoked and check tables.
    $this->assertText(t('hook_modules_installed fired for aggregator'), t('hook_modules_installed fired.'));
    $this->assertText(t('hook_modules_enabled fired for aggregator'), t('hook_modules_enabled fired.'));
    $this->assertModules(array('aggregator'), TRUE);
    $this->assertTableCount('aggregator', TRUE);
    $this->assertLogMessage('system', "%module module enabled.", array('%module' => 'aggregator'), WATCHDOG_INFO);

    // Disable aggregator, check tables, uninstall aggregator, check tables.
    $edit = array();
    $edit['modules[Core][aggregator][enable]'] = FALSE;
    $this->drupalPost('admin/structure/modules', $edit, t('Save configuration'));
    $this->assertText(t('The configuration options have been saved.'), t('Modules status has been updated.'));

    // Check that hook_modules_disabled hook was invoked and check tables.
    $this->assertText(t('hook_modules_disabled fired for aggregator'), t('hook_modules_disabled fired.'));
    $this->assertModules(array('aggregator'), FALSE);
    $this->assertTableCount('aggregator', TRUE);
    $this->assertLogMessage('system', "%module module disabled.", array('%module' => 'aggregator'), WATCHDOG_INFO);

    // Uninstall the module.
    $edit = array();
    $edit['uninstall[aggregator]'] = 'aggregator';
    $this->drupalPost('admin/structure/modules/uninstall', $edit, t('Uninstall'));

    $this->drupalPost(NULL, NULL, t('Uninstall'));
    $this->assertText(t('The selected modules have been uninstalled.'), t('Modules status has been updated.'));

    // Check that hook_modules_uninstalled hook was invoked and check tables.
    $this->assertText(t('hook_modules_uninstalled fired for aggregator'), t('hook_modules_uninstalled fired.'));
    $this->assertModules(array('aggregator'), FALSE);
    $this->assertTableCount('aggregator', FALSE);
    $this->assertLogMessage('system', "%module module uninstalled.", array('%module' => 'aggregator'), WATCHDOG_INFO);

    // Reinstall (and enable) aggregator module.
    $edit = array();
    $edit['modules[Core][aggregator][enable]'] = 'aggregator';
    $this->drupalPost('admin/structure/modules', $edit, t('Save configuration'));
    $this->assertText(t('The configuration options have been saved.'), t('Modules status has been updated.'));
  }
}

/**
 * Test module dependency functionality.
 */
class ModuleDependencyTestCase extends ModuleTestCase {
  public static function getInfo() {
    return array(
      'name' => 'Module dependencies',
      'description' => 'Enable module without dependency enabled.',
      'group' => 'Module',
    );
  }

  /**
   * Attempt to enable translation module without locale enabled.
   */
  function testEnableWithoutDependency() {
    // Attempt to enable content translation without locale enabled.
    $edit = array();
    $edit['modules[Core][translation][enable]'] = 'translation';
    $this->drupalPost('admin/structure/modules', $edit, t('Save configuration'));
    $this->assertText(t('Some required modules must be enabled'), t('Dependecy required.'));

    $this->assertModules(array('translation', 'locale'), FALSE);

    // Assert that the locale tables weren't enabled.
    $this->assertTableCount('languages', FALSE);
    $this->assertTableCount('locale', FALSE);

    $this->drupalPost(NULL, NULL, t('Continue'));
    $this->assertText(t('The configuration options have been saved.'), t('Modules status has been updated.'));

    $this->assertModules(array('translation', 'locale'), TRUE);

    // Assert that the locale tables were enabled.
    $this->assertTableCount('languages', TRUE);
    $this->assertTableCount('locale', TRUE);
  }
}

/**
 * Test module dependency on specific versions.
 */
class ModuleVersionTestCase extends ModuleTestCase {
  public static function getInfo() {
    return array(
      'name' => 'Module versions',
      'description' => 'Check module version dependencies.',
      'group' => 'Module',
    );
  }
  
  function setup() {
    parent::setUp('module_test');
  }

  /**
   * Test version dependencies.
   */
  function testModuleVersions() {
    $dependencies = array(
      // Alternating between being compatible and incompatible with 7.x-2.4.
      // The first is always a compatible.
      'common_test',
      // Branch incompatibility.
      'common_test (1.x)',
      // Branch compatibility.
      'common_test (2.x)',
      // Another branch incompatibility.
      'common_test (>2.x)',
      // Another branch compatibility.
      'common_test (<=2.x)',
      // Another branch incompatibility.
      'common_test (<2.x)',
      // Another branch compatibility.
      'common_test (>=2.x)',
      // Nonsense, misses a dash. Incompatible with everything.
      'common_test (=7.x2.x, >=2.4)',
      // Core version is optional. Compatible.
      'common_test (=7.x-2.x, >=2.4)',
      // Test !=, explicitly incompatible.
      'common_test (=2.x, !=2.4)',
      // Three operations. Compatible.
      'common_test (=2.x, !=2.3, <2.5)',
    );
    variable_set('dependencies', $dependencies);
    $n = count($dependencies);
    for ($i = 0; $i < $n; $i++) {
      $this->drupalGet('admin/structure/modules');
      $checkbox = $this->xpath('//input[@id="edit-modules-Testing-module-test-enable"]');
      $this->assertEqual(!empty($checkbox[0]['disabled']), $i % 2, $dependencies[$i]);
    }
  }
}

/**
 * Test required modules functionality.
 */
class ModuleRequiredTestCase extends ModuleTestCase {
  public static function getInfo() {
    return array(
      'name' => 'Required modules',
      'description' => 'Attempt disabling of required modules.',
      'group' => 'Module',
    );
  }

  /**
   * Assert that core required modules cannot be disabled.
   */
  function testDisableRequired() {
    $required_modules = drupal_required_modules();
    $this->drupalGet('admin/structure/modules');
    foreach ($required_modules as $module) {
      // Check to make sure the checkbox for required module is not found.
      $this->assertNoFieldByName('modules[Core][' . $module . '][enable]');
    }
  }
}

class IPAddressBlockingTestCase extends DrupalWebTestCase {
  protected $blocking_user;

  /**
   * Implement getInfo().
   */
  public static function getInfo() {
    return array(
      'name' => 'IP address blocking',
      'description' => 'Test IP address blocking.',
      'group' => 'System'
    );
  }

  /**
   * Implement setUp().
   */
  function setUp() {
    parent::setUp();

    // Create user.
    $this->blocking_user = $this->drupalCreateUser(array('block IP addresses'));
    $this->drupalLogin($this->blocking_user);
  }

  /**
   * Test a variety of user input to confirm correct validation and saving of data.
   */
  function testIPAddressValidation() {
    $this->drupalGet('admin/settings/ip-blocking');

    // Block a valid IP address.
    $edit = array();
    $edit['ip'] = '192.168.1.1';
    $this->drupalPost('admin/settings/ip-blocking', $edit, t('Save'));
    $ip = db_query("SELECT iid from {blocked_ips} WHERE ip = :ip", array(':ip' => $edit['ip']))->fetchField();
    $this->assertNotNull($ip, t('IP address found in database'));
    $this->assertRaw(t('The IP address %ip has been blocked.', array('%ip' => $edit['ip'])), t('IP address was blocked.'));

    // Try to block an IP address that's already blocked.
    $edit = array();
    $edit['ip'] = '192.168.1.1';
    $this->drupalPost('admin/settings/ip-blocking', $edit, t('Save'));
    $this->assertText(t('This IP address is already blocked.'));

    // Try to block a reserved IP address.
    $edit = array();
    $edit['ip'] = '255.255.255.255';
    $this->drupalPost('admin/settings/ip-blocking', $edit, t('Save'));
    $this->assertText(t('Please enter a valid IP address.'));

    // Try to block a reserved IP address.
    $edit = array();
    $edit['ip'] = 'test.example.com';
    $this->drupalPost('admin/settings/ip-blocking', $edit, t('Save'));
    $this->assertText(t('Please enter a valid IP address.'));

    // Submit an empty form.
    $edit = array();
    $edit['ip'] = '';
    $this->drupalPost('admin/settings/ip-blocking', $edit, t('Save'));
    $this->assertText(t('Please enter a valid IP address.'));

    // Submit your own IP address. This fails, although it works when testing manually.
     // TODO: on some systems this test fails due to a bug or inconsistency in cURL.
     // $edit = array();
     // $edit['ip'] = ip_address();
     // $this->drupalPost('admin/settings/ip-blocking', $edit, t('Save'));
     // $this->assertText(t('You may not block your own IP address.'));
  }
}

class CronRunTestCase extends DrupalWebTestCase {
  /**
   * Implement getInfo().
   */
  public static function getInfo() {
    return array(
      'name' => 'Cron run',
      'description' => 'Test cron run.',
      'group' => 'System'
    );
  }

  /**
   * Test cron runs.
   */
  function testCronRun() {
    global $base_url;
    // Run cron anonymously without any cron key.
    $this->drupalGet($base_url . '/cron.php', array('external' => TRUE));
    $this->assertResponse(403);

    // Run cron anonymously with a random cron key.
    $key = $this->randomName(16);
    $this->drupalGet($base_url . '/cron.php', array('external' => TRUE, 'query' => 'cron_key=' . $key));
    $this->assertResponse(403);

    // Run cron anonymously with the valid cron key.
    $key = variable_get('cron_key', 'drupal');
    $this->drupalGet($base_url . '/cron.php', array('external' => TRUE, 'query' => 'cron_key=' . $key));
    $this->assertResponse(200);

    // Execute cron directly.
    $this->assertTrue(drupal_cron_run(), t('Cron ran successfully.'));
  }

  /**
   * Ensure that temporary files are removed.
   */
  function testTempFileCleanup() {
    // Create files for all the possible combinations of age and status. We're
    // using UPDATE statments rather than file_save() because it would set the
    // timestamp.

    // Temporary file that is older than DRUPAL_MAXIMUM_TEMP_FILE_AGE.
    $temp_old = file_save_data('');
    db_update('files')
      ->fields(array(
        'status' => 0,
        'timestamp' => 1,
      ))
      ->condition('fid', $temp_old->fid)
      ->execute();
    $this->assertTrue(file_exists($temp_old->filepath), t('Old temp file was created correctly.'));

    // Temporary file that is less than DRUPAL_MAXIMUM_TEMP_FILE_AGE.
    $temp_new = file_save_data('');
    db_update('files')
      ->fields(array('status' => 0))
      ->condition('fid', $temp_new->fid)
      ->execute();
    $this->assertTrue(file_exists($temp_new->filepath), t('New temp file was created correctly.'));

    // Permanent file that is older than DRUPAL_MAXIMUM_TEMP_FILE_AGE.
    $perm_old = file_save_data('');
    db_update('files')
      ->fields(array('timestamp' => 1))
      ->condition('fid', $temp_old->fid)
      ->execute();
    $this->assertTrue(file_exists($perm_old->filepath), t('Old permanent file was created correctly.'));

    // Permanent file that is newer than DRUPAL_MAXIMUM_TEMP_FILE_AGE.
    $perm_new = file_save_data('');
    $this->assertTrue(file_exists($perm_new->filepath), t('New permanent file was created correctly.'));

    // Run cron and then ensure that only the old, temp file was deleted.
    $this->assertTrue(drupal_cron_run(), t('Cron ran successfully.'));
    $this->assertFalse(file_exists($temp_old->filepath), t('Old temp file was correctly removed.'));
    $this->assertTrue(file_exists($temp_new->filepath), t('New temp file was correctly ignored.'));
    $this->assertTrue(file_exists($perm_old->filepath), t('Old permanent file was correctly ignored.'));
    $this->assertTrue(file_exists($perm_new->filepath), t('New permanent file was correctly ignored.'));
  }
}

class AdminMetaTagTestCase extends DrupalWebTestCase {
  /**
   * Implement getInfo().
   */
  public static function getInfo() {
    return array(
      'name' => 'Fingerprinting meta tag',
      'description' => 'Confirm that the fingerprinting meta tag appears as expected.',
      'group' => 'System'
    );
  }

  /**
   * Verify that the meta tag HTML is generated correctly.
   */
  public function testMetaTag() {
    list($version, ) = explode('.', VERSION);
    $string = '<meta name="Generator" content="Drupal ' . $version . ' (http://drupal.org)" />';
    $this->drupalGet('node');
    $this->assertRaw($string, t('Fingerprinting meta tag generated correctly.'), t('System'));
  }
}

/**
 * Tests custom access denied functionality.
 */
class AccessDeniedTestCase extends DrupalWebTestCase {
  protected $admin_user;

  /**
   * Implement getInfo().
   */
  public static function getInfo() {
    return array(
      'name' => '403 functionality',
      'description' => "Tests page access denied functionality, including custom 403 pages.",
      'group' => 'System'
    );
  }

  /**
   * Implement setUp().
   */
  function setUp() {
    parent::setUp();

    // Create an administrative user.
    $this->admin_user = $this->drupalCreateUser(array('administer site configuration', 'administer blocks'));
    $this->drupalLogin($this->admin_user);
  }

  function testAccessDenied() {
    $this->drupalGet('admin');
    $this->assertText(t('Access denied'), t('Found the default 403 page'));

    $edit = array(
      'title' => $this->randomName(10),
      'body' => array(array('value' => $this->randomName(100))),
    );
    $node = $this->drupalCreateNode($edit);

    // Use a custom 403 page.
    $this->drupalPost('admin/settings/site-information', array('site_403' => 'node/' . $node->nid), t('Save configuration'));

    $this->drupalGet('admin');
    $this->assertText($node->title, t('Found the custom 403 page'));

    // Logout and check that the user login block is shown on custom 403 pages.
    $this->drupalLogout();

    $this->drupalGet('admin');
    $this->assertText($node->title, t('Found the custom 403 page'));
    $this->assertText(t('User login'), t('Blocks are shown on the custom 403 page'));

    // Log back in and remove the custom 403 page.
    $this->drupalLogin($this->admin_user);
    $this->drupalPost('admin/settings/site-information', array('site_403' => ''), t('Save configuration'));

    // Logout and check that the user login block is shown on default 403 pages.
    $this->drupalLogout();

    $this->drupalGet('admin');
    $this->assertText(t('Access denied'), t('Found the default 403 page'));
    $this->assertText(t('User login'), t('Blocks are shown on the default 403 page'));

    // Log back in, set the custom 403 page to /user and remove the block
    $this->drupalLogin($this->admin_user);
    variable_set('site_403', 'user');
    $this->drupalPost('admin/structure/block', array('user_login[region]' => '-1'), t('Save blocks'));

    // Check that we can log in from the 403 page.
    $this->drupalLogout();
    $edit = array(
      'name' => $this->admin_user->name,
      'pass' => $this->admin_user->pass_raw,
    );
    $this->drupalPost('admin/settings/site-information', $edit, t('Log in'));

    // Check that we're still on the same page.
    $this->assertText(t('Site information'));
  }
}

class PageNotFoundTestCase extends DrupalWebTestCase {
  protected $admin_user;

  /**
   * Implement getInfo().
   */
  public static function getInfo() {
    return array(
      'name' => '404 functionality',
      'description' => "Tests page not found functionality, including custom 404 pages.",
      'group' => 'System'
    );
  }

  /**
   * Implement setUp().
   */
  function setUp() {
    parent::setUp();

    // Create an administrative user.
    $this->admin_user = $this->drupalCreateUser(array('administer site configuration'));
    $this->drupalLogin($this->admin_user);
  }

  function testPageNotFound() {
    $this->drupalGet($this->randomName(10));
    $this->assertText(t('Page not found'), t('Found the default 404 page'));

    $edit = array(
      'title' => $this->randomName(10),
      'body' => array(array('value' => $this->randomName(100))),
    );
    $node = $this->drupalCreateNode($edit);

    // Use a custom 404 page.
    $this->drupalPost('admin/settings/site-information', array('site_404' => 'node/' . $node->nid), t('Save configuration'));

    $this->drupalGet($this->randomName(10));
    $this->assertText($node->title, t('Found the custom 404 page'));

    // Logout and check that the user login block is not shown on custom 404 pages.
    $this->drupalLogout();

    $this->drupalGet($this->randomName(10));
    $this->assertText($node->title, t('Found the custom 404 page'));
    $this->assertNoText(t('User login'), t('Blocks are not shown on the custom 404 page'));

    // Log back in and remove the custom 404 page.
    $this->drupalLogin($this->admin_user);
    $this->drupalPost('admin/settings/site-information', array('site_404' => ''), t('Save configuration'));

    // Logout and check that the user login block is not shown on default 404 pages.
    $this->drupalLogout();

    $this->drupalGet($this->randomName(10));
    $this->assertText(t('Page not found'), t('Found the default 404 page'));
    $this->assertNoText(t('User login'), t('Blocks are not shown on the default 404 page'));
  }
}

/**
 * Tests generic date and time handling capabilities of Drupal.
 */
class DateTimeFunctionalTest extends DrupalWebTestCase {
  public static function getInfo() {
    return array(
      'name' => 'Date and time',
      'description' => 'Configure date and time settings. Test date formatting and time zone handling, including daylight saving time.',
      'group' => 'System',
    );
  }

  /**
   * Test time zones and DST handling.
   */
  function testTimeZoneHandling() {
    // Setup date/time settings for Honolulu time.
    variable_set('date_default_timezone', 'Pacific/Honolulu');
    variable_set('configurable_timezones', 0);
    variable_set('date_format_medium', 'Y-m-d H:i:s O');

    // Create some nodes with different authored-on dates.
    $date1 = '2007-01-31 21:00:00 -1000';
    $date2 = '2007-07-31 21:00:00 -1000';
    $node1 = $this->drupalCreateNode(array('created' => strtotime($date1), 'type' => 'article'));
    $node2 = $this->drupalCreateNode(array('created' => strtotime($date2), 'type' => 'article'));

    // Confirm date format and time zone.
    $this->drupalGet("node/$node1->nid");
    $this->assertText('2007-01-31 21:00:00 -1000', t('Date should be identical, with GMT offset of -10 hours.'));
    $this->drupalGet("node/$node2->nid");
    $this->assertText('2007-07-31 21:00:00 -1000', t('Date should be identical, with GMT offset of -10 hours.'));

    // Set time zone to Los Angeles time.
    variable_set('date_default_timezone', 'America/Los_Angeles');

    // Confirm date format and time zone.
    $this->drupalGet("node/$node1->nid");
    $this->assertText('2007-01-31 23:00:00 -0800', t('Date should be two hours ahead, with GMT offset of -8 hours.'));
    $this->drupalGet("node/$node2->nid");
    $this->assertText('2007-08-01 00:00:00 -0700', t('Date should be three hours ahead, with GMT offset of -7 hours.'));
  }
}

class PageTitleFiltering extends DrupalWebTestCase {
  protected $content_user;
  protected $saved_title;

  /**
   * Implement getInfo().
   */
  public static function getInfo() {
    return array(
      'name' => 'HTML in page titles',
      'description' => 'Tests correct handling or conversion by drupal_set_title() and drupal_get_title().',
      'group' => 'System'
    );
  }

  /**
   * Implement setUp().
   */
  function setUp() {
    parent::setUp();

    $this->content_user = $this->drupalCreateUser(array('create page content', 'access content'));
    $this->drupalLogin($this->content_user);
    $this->saved_title = drupal_get_title();
  }

  /**
   * Reset page title.
   */
  function tearDown() {
    // Restore the page title.
    drupal_set_title($this->saved_title, PASS_THROUGH);

    parent::tearDown();
  }

  /**
   * Tests the handling of HTML by drupal_set_title() and drupal_get_title()
   */
  function testTitleTags() {
    $title = "string with <em>HTML</em>";
    // drupal_set_title's $filter is CHECK_PLAIN by default, so the title should be
    // returned with check_plain().
    drupal_set_title($title, CHECK_PLAIN);
    $this->assertTrue(strpos(drupal_get_title(), '<em>') === FALSE, t('Tags in title converted to entities when $output is CHECK_PLAIN.'));
    // drupal_set_title's $filter is passed as PASS_THROUGH, so the title should be
    // returned with HTML.
    drupal_set_title($title, PASS_THROUGH);
    $this->assertTrue(strpos(drupal_get_title(), '<em>') !== FALSE, t('Tags in title are not converted to entities when $output is PASS_THROUGH.'));
    // Generate node content.
    $edit = array(
     'title' => '!SimpleTest! ' . $title . $this->randomName(20),
     'body[0][value]' => '!SimpleTest! test body' . $this->randomName(200),
    );
    // Create the node with HTML in the title.
    $this->drupalPost('node/add/page', $edit, t('Save'));

    $node = $this->drupalGetNodeByTitle($edit['title']);
    $this->assertNotNull($node, 'Node created and found in database');
    $this->drupalGet("node/" . $node->nid);
    $this->assertText(check_plain($edit['title']), 'Check to make sure tags in the node title are converted.');
  }
}

/**
 * Test front page functionality and administration.
 */
class FrontPageTestCase extends DrupalWebTestCase {

  public static function getInfo() {
    return array(
      'name' => 'Front page',
      'description' => 'Tests front page functionality and administration.',
      'group' => 'System',
    );
  }

  function setUp() {
    parent::setUp('system_test');

    // Create admin user, log in admin user, and create one node.
    $this->admin_user = $this->drupalCreateUser(array('access content', 'administer site configuration'));
    $this->drupalLogin($this->admin_user);
    $this->node_path = "node/" . $this->drupalCreateNode(array('promote' => 1))->nid;

    // Enable front page logging in system_test.module.
    variable_set('front_page_output', 1);
  }

  /**
   * Test front page functionality.
   */
  function testDrupalIsFrontPage() {
    $this->drupalGet('');
    $this->assertText(t('On front page.'), t('Path is the front page.'));
    $this->drupalGet('node');
    $this->assertText(t('On front page.'), t('Path is the front page.'));
    $this->drupalGet($this->node_path);
    $this->assertNoText(t('On front page.'), t('Path is not the front page.'));

    // Change the front page to an invalid path.
    $edit = array('site_frontpage' => 'kittens');
    $this->drupalPost('admin/settings/site-information', $edit, t('Save configuration'));
    $this->assertText(t("The path '@path' is either invalid or you do not have access to it.", array('@path' => $edit['site_frontpage'])));

    // Change the front page to a valid path.
    $edit['site_frontpage'] = $this->node_path;
    $this->drupalPost('admin/settings/site-information', $edit, t('Save configuration'));
    $this->assertText(t('The configuration options have been saved.'), t('The front page path has been saved.'));

    $this->drupalGet('');
    $this->assertText(t('On front page.'), t('Path is the front page.'));
    $this->drupalGet('node');
    $this->assertNoText(t('On front page.'), t('Path is not the front page.'));
    $this->drupalGet($this->node_path);
    $this->assertText(t('On front page.'), t('Path is the front page.'));
  }
}

class SystemBlockTestCase extends DrupalWebTestCase {
  public static function getInfo() {
    return array(
      'name' => 'Block functionality',
      'description' => 'Configure and move powered-by block.',
      'group' => 'System',
    );
  }

  function setUp() {
    parent::setUp();

    // Create and login user
    $admin_user = $this->drupalCreateUser(array('administer blocks'));
    $this->drupalLogin($admin_user);
  }

  /**
   * Test displaying and hiding the powered-by block.
   */
  function testPoweredByBlock() {
    // Set block title and some settings to confirm that the interface is availble.
    $this->drupalPost('admin/structure/block/configure/system/powered-by', array('title' => $this->randomName(8), 'color' => 'powered-black', 'size' => '135x42'), t('Save block'));
    $this->assertText(t('The block configuration has been saved.'), t('Block configuration set.'));

    // Set the powered-by block to the footer region.
    $edit = array();
    $edit['system_powered-by[region]'] = 'footer';
    $this->drupalPost('admin/structure/block', $edit, t('Save blocks'));
    $this->assertText(t('The block settings have been updated.'), t('Block successfully move to footer region.'));

    // Confirm that the block is being displayed.
    $this->assertRaw('id="block-system-powered-by"', t('Block successfully being displayed on the page.'));

    // Set the block to the disabled region.
    $edit = array();
    $edit['system_powered-by[region]'] = '-1';
    $this->drupalPost('admin/structure/block', $edit, t('Save blocks'));

    // Confirm that the block is hidden.
    $this->assertNoRaw('id="block-system-powered-by"', t('Block no longer appears on page.'));

    // For convenience of developers, set the block to it's default settings.
    $edit = array();
    $edit['system_powered-by[region]'] = 'footer';
    $this->drupalPost('admin/structure/block', $edit, t('Save blocks'));
    $this->drupalPost('admin/structure/block/configure/system/powered-by', array('title' => '', 'color' => 'powered-blue', 'size' => '80x15'), t('Save block'));
  }

}

class SystemSettingsForm extends DrupalWebTestCase {
  /**
   * Implement getInfo().
   */
  public static function getInfo() {
    return array(
      'name' => 'System setting forms',
      'description' => 'Tests correctness of system_settings_form() processing.',
      'group' => 'System'
    );
  }

  /**
   * Implement setUp().
   */
  function setUp() {
    parent::setUp();

    variable_set('system_settings_form_test', TRUE);
    variable_set('system_settings_form_test_4', TRUE);
  }

  /**
   * Reset page title.
   */
  function tearDown() {
    variable_del('system_settings_form_test');
    variable_del('system_settings_form_test_4');

    parent::tearDown();
  }

  /**
   * Tests the handling of automatic defaults in systems_settings_form().
   */
  function testAutomaticDefaults() {
    $form = array();

    $form['system_settings_form_test'] = array(
      '#type' => 'checkbox',
      '#default_value' => FALSE,
    );

    $form['system_settings_form_test_2'] = array(
      '#type' => 'checkbox',
      '#default_value' => FALSE,
    );

    $form['system_settings_form_test_3'] = array(
      '#type' => 'checkbox',
      '#default_value' => TRUE,
    );

    $form['has_children']['system_settings_form_test_4'] = array(
      '#type' => 'checkbox',
      '#default_value' => FALSE,
    );

    $form['has_children']['system_settings_form_test_5'] = array(
      '#type' => 'checkbox',
      '#default_value' => TRUE,
    );

    $automatic = system_settings_form($form, FALSE);
    $this->assertFalse($automatic['system_settings_form_test']['#default_value']);
    $this->assertFalse($automatic['system_settings_form_test_2']['#default_value']);
    $this->assertTrue($automatic['system_settings_form_test_3']['#default_value']);
    $this->assertFalse($automatic['has_children']['system_settings_form_test_4']['#default_value']);
    $this->assertTrue($automatic['has_children']['system_settings_form_test_5']['#default_value']);

    $no_automatic = system_settings_form($form);
    $this->assertTrue($no_automatic['system_settings_form_test']['#default_value']);
    $this->assertFalse($no_automatic['system_settings_form_test_2']['#default_value']);
    $this->assertTrue($no_automatic['system_settings_form_test_3']['#default_value']);
    $this->assertTrue($no_automatic['has_children']['system_settings_form_test_4']['#default_value']);
    $this->assertTrue($no_automatic['has_children']['system_settings_form_test_5']['#default_value']);
  }
}

/**
 * Tests for the theme interface functionality.
 */
class SystemThemeFunctionalTest extends DrupalWebTestCase {
  public static function getInfo() {
    return array(
      'name' => 'Theme interface functionality',
      'description' => 'Tests the theme interface functionality by enabling and switching themes, and using an administration theme.',
      'group' => 'System',
    );
  }

  function setUp() {
    parent::setUp();

    $this->admin_user = $this->drupalCreateUser(array('access administration pages', 'administer site configuration', 'bypass node access'));
    $this->drupalLogin($this->admin_user);
    $this->node = $this->drupalCreateNode();
  }

  /**
   * Test the administration theme functionality.
   */
  function testAdministrationTheme() {
    // Enable an administration theme and show it on the node admin pages.
    $edit = array(
      'theme_default' => 'stark',
      'admin_theme' => 'garland',
      'node_admin_theme' => TRUE,
    );
    $this->drupalPost('admin/appearance', $edit, t('Save configuration'));

    $this->drupalGet('admin');
    $this->assertRaw('themes/garland', t('Administration theme used on an administration page.'));

    $this->drupalGet('node/' . $this->node->nid);
    $this->assertRaw('themes/stark', t('Site default theme used on node page.'));

    $this->drupalGet('node/add');
    $this->assertRaw('themes/garland', t('Administration theme used on the add content page.'));

    $this->drupalGet('node/' . $this->node->nid . '/edit');
    $this->assertRaw('themes/garland', t('Administration theme used on the edit content page.'));

    // Disable the admin theme on the node admin pages.
    $edit = array(
      'node_admin_theme' => FALSE,
    );
    $this->drupalPost('admin/appearance', $edit, t('Save configuration'));

    $this->drupalGet('admin');
    $this->assertRaw('themes/garland', t('Administration theme used on an administration page.'));

    $this->drupalGet('node/add');
    $this->assertRaw('themes/stark', t('Site default theme used on the add content page.'));

    // Reset to the default theme settings.
    $edit = array(
      'theme_default' => 'garland',
      'admin_theme' => '0',
      'node_admin_theme' => FALSE,
    );
    $this->drupalPost('admin/appearance', $edit, t('Save configuration'));

    $this->drupalGet('admin');
    $this->assertRaw('themes/garland', t('Site default theme used on administration page.'));

    $this->drupalGet('node/add');
    $this->assertRaw('themes/garland', t('Site default theme used on the add content page.'));
  }
}


/**
 * Test the basic queue functionality.
 */
class QueueTestCase extends DrupalWebTestCase {
  public static function getInfo() {
    return array(
      'name' => 'Queue functionality',
      'description' => 'Queues and dequeues a set of items to check the basic queue functionality.',
      'group' => 'System',
    );
  }

  /**
   * Queues and dequeues a set of items to check the basic queue functionality.
   */
  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();