<?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/config/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/config/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/config/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/config/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/config/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-beta3.
      // 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-alpha2)',
      // Test !=, explicitly incompatible.
      'common_test (=2.x, !=2.4-beta3)',
      // Three operations. Compatible.
      'common_test (=2.x, !=2.3, <2.5)',
      // Testing extra version. Incompatible.
      'common_test (<=2.4-beta2)',
      // Testing extra version. Compatible.
      'common_test (>2.4-beta2)',
      // Testing extra version. Incompatible.
      'common_test (>2.4-rc0)',
    );
    variable_set('dependencies', $dependencies);
    $n = count($dependencies);
    for ($i = 0; $i < $n; $i++) {
      $this->drupalGet('admin/config/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();
    $this->drupalGet('admin/config/modules');
    foreach ($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/config/people/ip-blocking');

    // Block a valid IP address.
    $edit = array();
    $edit['ip'] = '192.168.1.1';
    $this->drupalPost('admin/config/people/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/config/people/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/config/people/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/config/people/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/config/people/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/config/people/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' => array('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' => array('cron_key' => $key)));
    $this->assertResponse(200);

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

  /**
   * Follow every image paths in the previously retrieved content.
   */
  function drupalGetAllImages() {
    foreach ($this->xpath('//img') as $image) {
      $this->drupalGet($this->getAbsoluteUrl($image['src']));
    }
  }

  /**
   * Ensure that the cron image callback to run it automatically is working.
   *
   * In these tests we do not use REQUEST_TIME to track start time, because we
   * need the exact time when cron is triggered.
   */
  function testCronThreshold() {
    // Ensure cron does not run when the cron threshold is enabled and was
    // not passed.
    $start_cron_last = time();
    variable_set('cron_last', $start_cron_last);
    variable_set('cron_safe_threshold', 10);
    $this->drupalGet('');
    // Follow every image path on the page.
    $this->drupalGetAllImages();
    $this->assertTrue($start_cron_last == variable_get('cron_last', NULL), t('Cron does not run when the cron threshold is not passed.'));

    // Test if cron runs when the cron threshold was passed.
    $start_cron_last = time() - 15;
    variable_set('cron_last', $start_cron_last);
    $this->drupalGet('');
    // Follow every image path on the page.
    $this->drupalGetAllImages();
    $this->assertTrue(variable_get('cron_last', NULL) > $start_cron_last, t('Cron runs when the cron threshold is passed.'));

    // Test if cron does not run when the cron threshold was is disabled.
    $start_cron_last = time() - 15;
    variable_set('cron_safe_threshold', 0);
    variable_set('cron_last', $start_cron_last);
    $this->drupalGet('');
    // Follow every image path on the page.
    $this->drupalGetAllImages();
    $this->assertTrue($start_cron_last == variable_get('cron_last', NULL), t('Cron does not run when the cron threshold is disabled.'));
  }

  /**
   * Ensure that temporary files are removed.
   *
   * Create files for all the possible combinations of age and status. We are
   * using UPDATE statments rather than file_save() because it would set the
   * timestamp.
   */
  function testTempFileCleanup() {
    // Temporary file that is older than DRUPAL_MAXIMUM_TEMP_FILE_AGE.
    $temp_old = file_save_data('');
    db_update('file')
      ->fields(array(
        'status' => 0,
        'timestamp' => 1,
      ))
      ->condition('fid', $temp_old->fid)
      ->execute();
    $this->assertTrue(file_exists($temp_old->uri), 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('file')
      ->fields(array('status' => 0))
      ->condition('fid', $temp_new->fid)
      ->execute();
    $this->assertTrue(file_exists($temp_new->uri), 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('file')
      ->fields(array('timestamp' => 1))
      ->condition('fid', $temp_old->fid)
      ->execute();
    $this->assertTrue(file_exists($perm_old->uri), 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->uri), 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->uri), t('Old temp file was correctly removed.'));
    $this->assertTrue(file_exists($temp_new->uri), t('New temp file was correctly ignored.'));
    $this->assertTrue(file_exists($perm_old->uri), t('Old permanent file was correctly ignored.'));
    $this->assertTrue(file_exists($perm_new->uri), 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;

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

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

    // Use a custom 403 page.
    $this->drupalPost('admin/config/system/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/config/system/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/config/system/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(FIELD_LANGUAGE_NONE => array(array('value' => $this->randomName(100)))),
    );
    $node = $this->drupalCreateNode($edit);

    // Use a custom 404 page.
    $this->drupalPost('admin/config/system/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'));
  }
}

/**
 * Tests site maintenance functionality.
 */
class SiteMaintenanceTestCase extends DrupalWebTestCase {
  protected $admin_user;

  public static function getInfo() {
    return array(
      'name' => 'Site maintenance mode functionality',
      'description' => 'Test access to site while in maintenance mode.',
      'group' => 'System',
    );
  }

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

    // Create a user allowed to access site in maintenance mode.
    $this->user = $this->drupalCreateUser(array('access site in maintenance mode'));
    // Create an administrative user.
    $this->admin_user = $this->drupalCreateUser(array('administer site configuration', 'access site in maintenance mode'));
    $this->drupalLogin($this->admin_user);
  }

  /**
   * Verify site maintenance mode functionality.
   */
  function testSiteMaintenance() {
    // Turn on maintenance mode.
    $edit = array(
      'maintenance_mode' => 1,
    );
    $this->drupalPost('admin/config/development/maintenance', $edit, t('Save configuration'));

    $admin_message = t('Operating in maintenance mode. <a href="@url">Go online.</a>', array('@url' => url('admin/config/development/maintenance')));
    $user_message = t('Operating in maintenance mode.');
    $offline_message = t('@site is currently under maintenance. We should be back shortly. Thank you for your patience.', array('@site' => variable_get('site_name', 'Drupal')));

    $this->drupalGet('');
    $this->assertRaw($admin_message, t('Found the site maintenance mode message.'));

    // Logout and verify that offline message is displayed.
    $this->drupalLogout();
    $this->drupalGet('');
    $this->assertText($offline_message);
    $this->drupalGet('node');
    $this->assertText($offline_message);
    $this->drupalGet('user/register');
    $this->assertText($offline_message);
    $this->drupalGet('user/password');
    $this->assertText($offline_message);

    // Verify that user is able to log in.
    $this->drupalGet('user');
    $this->assertNoText($offline_message);
    $this->drupalGet('user/login');
    $this->assertNoText($offline_message);

    // Log in user and verify that maintenance mode message is displayed
    // directly after login.
    $edit = array(
      'name' => $this->user->name,
      'pass' => $this->user->pass_raw,
    );
    $this->drupalPost(NULL, $edit, t('Log in'));
    $this->assertText($user_message);

    // Log in administrative user and configure a custom site offline message.
    $this->drupalLogout();
    $this->drupalLogin($this->admin_user);
    $this->drupalGet('admin/config/development/maintenance');
    $this->assertNoRaw($admin_message, t('Site maintenance mode message not displayed.'));

    $offline_message = 'Sorry, not online.';
    $edit = array(
      'maintenance_mode_message' => $offline_message,
    );
    $this->drupalPost(NULL, $edit, t('Save configuration'));

    // Logout and verify that custom site offline message is displayed.
    $this->drupalLogout();
    $this->drupalGet('');
    $this->assertRaw($offline_message, t('Found the site offline message.'));
  }
}

/**
 * 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.
    $langcode = FIELD_LANGUAGE_NONE;
    $edit = array(
     'title' => '!SimpleTest! ' . $title . $this->randomName(20),
     "body[$langcode][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/config/system/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/config/system/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['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();

    $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, t('Two items matched'));

    // Add two more items.
    $queue1->createItem($data[2]);
    $queue1->createItem($data[3]);

    $this->assertTrue($queue1->numberOfItems(), t('Queue 1 is not empty after adding items.'));
    $this->assertFalse($queue2->numberOfItems(), t('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, t('Four items matched'));

    // There should be no duplicate items.
    $this->assertEqual($this->queueScore($new_items, $new_items), 4, t('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(), t('Queue 1 is empty'));
    $this->assertFalse($queue2->numberOfItems(), t('Queue 2 is empty'));
  }

  /**
   * This function returns the number of equal items in two arrays.
   */
  function queueScore($items, $new_items) {
    $score = 0;
    foreach ($items as $item) {
      foreach ($new_items as $new_item) {
        if ($item === $new_item) {
          $score++;
        }
      }
    }
    return $score;
  }
}

/**
 * Test token replacement in strings.
 */
class TokenReplaceTestCase extends DrupalWebTestCase {
  public static function getInfo() {
    return array(
      'name' => 'Token replacement',
      'description' => 'Generates text using placeholders for dummy content to check token replacement.',
      'group' => 'System',
    );
  }

  /**
   * Creates a user and a node, then tests the tokens generated from them.
   */
  function testTokenReplacement() {
    // Create the initial objects.
    $account = $this->drupalCreateUser();
    $node = $this->drupalCreateNode(array('uid' => $account->uid));
    $node->title = '<blink>Blinking Text</blink>';
    global $user, $language;

    $source  = '[node:title]';         // Title of the node we passed in
    $source .= '[node:author:name]';   // Node author's name
    $source .= '[node:created:since]'; // Time since the node was created
    $source .= '[current-user:name]';  // Current user's name
    $source .= '[user:name]';          // No user passed in, should be untouched
    $source .= '[date:short]';         // Short date format of REQUEST_TIME
    $source .= '[bogus:token]';        // Nonexistent token, should be untouched

    $target  = check_plain($node->title);
    $target .= check_plain($account->name);
    $target .= format_interval(REQUEST_TIME - $node->created, 2, $language->language);
    $target .= check_plain($user->name);
    $target .= '[user:name]';
    $target .= format_date(REQUEST_TIME, 'short', '', NULL, $language->language);
    $target .= '[bogus:token]';

    $result = token_replace($source, array('node' => $node), array('language' => $language));

    // Check that the results of token_generate are sanitized properly. This does NOT
    // test the cleanliness of every token -- just that the $sanitize flag is being
    // passed properly through the call stack and being handled correctly by a 'known'
    // token, [node:title].
    $this->assertFalse(strcmp($target, $result), t('Basic placeholder tokens replaced.'));

    $raw_tokens = array('title' => '[node:title]');
    $generated = token_generate('node', $raw_tokens, array('node' => $node));
    $this->assertFalse(strcmp($generated['[node:title]'], check_plain($node->title)), t('Token sanitized.'));

    $generated = token_generate('node', $raw_tokens, array('node' => $node), array('sanitize' => FALSE));
    $this->assertFalse(strcmp($generated['[node:title]'], $node->title), t('Unsanitized token generated properly.'));
  }
}

class InfoFileParserTestCase extends DrupalUnitTestCase {
  public static function getInfo() {
    return array(
      'name' => 'Info file format parser',
      'description' => 'Tests proper parsing of a .info file formatted string.',
      'group' => 'System',
    );
  }

  /**
   * Test drupal_parse_info_format().
   */
  function testDrupalParseInfoFormat() {
    $config = '
simple = Value
quoted = " Value"
multiline = "Value
  Value"
array[] = Value1
array[] = Value2
array_assoc[a] = Value1
array_assoc[b] = Value2
array_deep[][][] = Value
array_deep_assoc[a][b][c] = Value
array_space[a b] = Value';

    $expected = array(
      'simple' => 'Value',
      'quoted' => ' Value',
      'multiline' => "Value\n  Value",
      'array' => array(
        0 => 'Value1',
        1 => 'Value2',
      ),
      'array_assoc' => array(
        'a' => 'Value1',
        'b' => 'Value2',
      ),
      'array_deep' => array(
        0 => array(
          0 => array(
            0 => 'Value',
          ),
        ),
      ),
      'array_deep_assoc' => array(
        'a' => array(
          'b' => array(
            'c' => 'Value',
          ),
        ),
      ),
      'array_space' => array(
        'a b' => 'Value',
      ),
    );

    $parsed = drupal_parse_info_format($config);

    $this->assertEqual($parsed['simple'], $expected['simple'], t('Set a simple value.'));
    $this->assertEqual($parsed['quoted'], $expected['quoted'], t('Set a simple value in quotes.'));
    $this->assertEqual($parsed['multiline'], $expected['multiline'], t('Set a multiline value.'));
    $this->assertEqual($parsed['array'], $expected['array'], t('Set a simple array.'));
    $this->assertEqual($parsed['array_assoc'], $expected['array_assoc'], t('Set an associative array.'));
    $this->assertEqual($parsed['array_deep'], $expected['array_deep'], t('Set a nested array.'));
    $this->assertEqual($parsed['array_deep_assoc'], $expected['array_deep_assoc'], t('Set a nested associative array.'));
    $this->assertEqual($parsed['array_space'], $expected['array_space'], t('Set an array with a whitespace in the key.'));
    $this->assertEqual($parsed, $expected, t('Entire parsed .info string and expected array are identical.'));
  }
}

/**
 * Tests for the update system functionality.
 */
class UpdateScriptFunctionalTest extends DrupalWebTestCase {
  private $update_url;
  private $update_user;

  public static function getInfo() {
    return array(
      'name' => 'Update functionality',
      'description' => 'Tests the update script access and functionality.',
      'group' => 'System',
    );
  }

  function setUp() {
    parent::setUp();
    $this->update_url = $GLOBALS['base_url'] . '/update.php';
    $this->update_user = $this->drupalCreateUser(array('administer software updates'));
  }

  /**
   * Tests access to the update script.
   */
  function testUpdateAccess() {
    // Try accessing update.php without the proper permission.
    $regular_user = $this->drupalCreateUser();
    $this->drupalLogin($regular_user);
    $this->drupalGet($this->update_url, array('external' => TRUE));
    $this->assertResponse(403);

    // Try accessing update.php as an anonymous user.
    $this->drupalLogout();
    $this->drupalGet($this->update_url, array('external' => TRUE));
    $this->assertResponse(403);

    // Access the update page with the proper permission.
    $this->drupalLogin($this->update_user);
    $this->drupalGet($this->update_url, array('external' => TRUE));
    $this->assertResponse(200);

    // Access the update page as user 1.
    $user1 = user_load(1);
    $user1->pass_raw = user_password();
    require_once DRUPAL_ROOT . '/' . variable_get('password_inc', 'includes/password.inc');
    $user1->pass = user_hash_password(trim($user1->pass_raw));
    db_query("UPDATE {users} SET pass = :pass WHERE uid = :uid", array(':pass' => $user1->pass, ':uid' => $user1->uid));
    $this->drupalLogin($user1);
    $this->drupalGet($this->update_url, array('external' => TRUE));
    $this->assertResponse(200);
  }
}