<?php

/**
 * @file
 * Tests for block.module.
 */

class BlockTestCase extends DrupalWebTestCase {
  protected $regions;
  protected $admin_user;

  public static function getInfo() {
    return array(
      'name' => 'Block functionality',
      'description' => 'Add, edit and delete custom block. Configure and move a module-defined block.',
      'group' => 'Block',
    );
  }

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

    // Create and log in an administrative user having access to the Full HTML
    // text format.
    $full_html_format = filter_format_load('full_html');
    $this->admin_user = $this->drupalCreateUser(array(
      'administer blocks',
      filter_permission_name($full_html_format),
      'access administration pages',
    ));
    $this->drupalLogin($this->admin_user);

    // Define the existing regions
    $this->regions = array();
    $this->regions[] = 'header';
    $this->regions[] = 'sidebar_first';
    $this->regions[] = 'content';
    $this->regions[] = 'sidebar_second';
    $this->regions[] = 'footer';
  }

  /**
   * Test creating custom block, moving it to a specific region and then deleting it.
   */
  function testCustomBlock() {
    // Confirm that the add block link appears on block overview pages.
    $this->drupalGet('admin/structure/block');
    $this->assertRaw(l('Add block', 'admin/structure/block/add'), 'Add block link is present on block overview page for default theme.');
    $this->drupalGet('admin/structure/block/list/seven');
    $this->assertRaw(l('Add block', 'admin/structure/block/list/seven/add'), 'Add block link is present on block overview page for non-default theme.');

    // Confirm that hidden regions are not shown as options for block placement
    // when adding a new block.
    theme_enable(array('stark'));
    $themes = list_themes();
    $this->drupalGet('admin/structure/block/add');
    foreach ($themes as $key => $theme) {
      if ($theme->status) {
        foreach ($theme->info['regions_hidden'] as $hidden_region) {
          $elements = $this->xpath('//select[@id=:id]//option[@value=:value]', array(':id' => 'edit-regions-' . $key, ':value' => $hidden_region));
          $this->assertFalse(isset($elements[0]), format_string('The hidden region @region is not available for @theme.', array('@region' => $hidden_region, '@theme' => $key)));
        }
      }
    }

    // Add a new custom block by filling out the input form on the admin/structure/block/add page.
    $custom_block = array();
    $custom_block['info'] = $this->randomName(8);
    $custom_block['title'] = $this->randomName(8);
    $custom_block['body[value]'] = $this->randomName(32);
    $this->drupalPost('admin/structure/block/add', $custom_block, t('Save block'));

    // Confirm that the custom block has been created, and then query the created bid.
    $this->assertText(t('The block has been created.'), 'Custom block successfully created.');
    $bid = db_query("SELECT bid FROM {block_custom} WHERE info = :info", array(':info' => $custom_block['info']))->fetchField();

    // Check to see if the custom block was created by checking that it's in the database.
    $this->assertTrue($bid, 'Custom block found in database');

    // Check that block_block_view() returns the correct title and content.
    $data = block_block_view($bid);
    $format = db_query("SELECT format FROM {block_custom} WHERE bid = :bid", array(':bid' => $bid))->fetchField();
    $this->assertTrue(array_key_exists('subject', $data) && empty($data['subject']), 'block_block_view() provides an empty block subject, since custom blocks do not have default titles.');
    $this->assertEqual(check_markup($custom_block['body[value]'], $format), $data['content'], 'block_block_view() provides correct block content.');

    // Check whether the block can be moved to all available regions.
    $custom_block['module'] = 'block';
    $custom_block['delta'] = $bid;
    foreach ($this->regions as $region) {
      $this->moveBlockToRegion($custom_block, $region);
    }

    // Verify presence of configure and delete links for custom block.
    $this->drupalGet('admin/structure/block');
    $this->assertLinkByHref('admin/structure/block/manage/block/' . $bid . '/configure', 0, 'Custom block configure link found.');
    $this->assertLinkByHref('admin/structure/block/manage/block/' . $bid . '/delete', 0, 'Custom block delete link found.');

    // Set visibility only for authenticated users, to verify delete functionality.
    $edit = array();
    $edit['roles[' . DRUPAL_AUTHENTICATED_RID . ']'] = TRUE;
    $this->drupalPost('admin/structure/block/manage/block/' . $bid . '/configure', $edit, t('Save block'));

    // Delete the created custom block & verify that it's been deleted and no longer appearing on the page.
    $this->clickLink(t('delete'));
    $this->drupalPost('admin/structure/block/manage/block/' . $bid . '/delete', array(), t('Delete'));
    $this->assertRaw(t('The block %title has been removed.', array('%title' => $custom_block['info'])), 'Custom block successfully deleted.');
    $this->assertNoText(t($custom_block['title']), 'Custom block no longer appears on page.');
    $count = db_query("SELECT 1 FROM {block_role} WHERE module = :module AND delta = :delta", array(':module' => $custom_block['module'], ':delta' => $custom_block['delta']))->fetchField();
    $this->assertFalse($count, 'Table block_role being cleaned.');
  }

  /**
   * Test creating custom block using Full HTML.
   */
  function testCustomBlockFormat() {
    // Add a new custom block by filling out the input form on the admin/structure/block/add page.
    $custom_block = array();
    $custom_block['info'] = $this->randomName(8);
    $custom_block['title'] = $this->randomName(8);
    $custom_block['body[value]'] = '<h1>Full HTML</h1>';
    $full_html_format = filter_format_load('full_html');
    $custom_block['body[format]'] = $full_html_format->format;
    $this->drupalPost('admin/structure/block/add', $custom_block, t('Save block'));

    // Set the created custom block to a specific region.
    $bid = db_query("SELECT bid FROM {block_custom} WHERE info = :info", array(':info' => $custom_block['info']))->fetchField();
    $edit = array();
    $edit['blocks[block_' . $bid . '][region]'] = $this->regions[1];
    $this->drupalPost('admin/structure/block', $edit, t('Save blocks'));

    // Confirm that the custom block is being displayed using configured text format.
    $this->drupalGet('node');
    $this->assertRaw('<h1>Full HTML</h1>', 'Custom block successfully being displayed using Full HTML.');

    // Confirm that a user without access to Full HTML can not see the body field,
    // but can still submit the form without errors.
    $block_admin = $this->drupalCreateUser(array('administer blocks'));
    $this->drupalLogin($block_admin);
    $this->drupalGet('admin/structure/block/manage/block/' . $bid . '/configure');
    $this->assertFieldByXPath("//textarea[@name='body[value]' and @disabled='disabled']", t('This field has been disabled because you do not have sufficient permissions to edit it.'), 'Body field contains denied message');
    $this->drupalPost('admin/structure/block/manage/block/' . $bid . '/configure', array(), t('Save block'));
    $this->assertNoText(t('Ensure that each block description is unique.'));

    // Confirm that the custom block is still being displayed using configured text format.
    $this->drupalGet('node');
    $this->assertRaw('<h1>Full HTML</h1>', 'Custom block successfully being displayed using Full HTML.');
  }

  /**
   * Test block visibility.
   */
  function testBlockVisibility() {
    $block = array();

    // Create a random title for the block
    $title = $this->randomName(8);

    // Create the custom block
    $custom_block = array();
    $custom_block['info'] = $this->randomName(8);
    $custom_block['title'] = $title;
    $custom_block['body[value]'] = $this->randomName(32);
    $this->drupalPost('admin/structure/block/add', $custom_block, t('Save block'));

    $bid = db_query("SELECT bid FROM {block_custom} WHERE info = :info", array(':info' => $custom_block['info']))->fetchField();
    $block['module'] = 'block';
    $block['delta'] = $bid;
    $block['title'] = $title;

    // Set the block to be hidden on any user path, and to be shown only to
    // authenticated users.
    $edit = array();
    $edit['pages'] = 'user*';
    $edit['roles[' . DRUPAL_AUTHENTICATED_RID . ']'] = TRUE;
    $this->drupalPost('admin/structure/block/manage/' . $block['module'] . '/' . $block['delta'] . '/configure', $edit, t('Save block'));

    // Move block to the first sidebar.
    $this->moveBlockToRegion($block, $this->regions[1]);

    $this->drupalGet('');
    $this->assertText($title, 'Block was displayed on the front page.');

    $this->drupalGet('user');
    $this->assertNoText($title, 'Block was not displayed according to block visibility rules.');

    $this->drupalGet('USER/' . $this->admin_user->uid);
    $this->assertNoText($title, 'Block was not displayed according to block visibility rules regardless of path case.');

    // Confirm that the block is not displayed to anonymous users.
    $this->drupalLogout();
    $this->drupalGet('');
    $this->assertNoText($title, 'Block was not displayed to anonymous users.');
  }

  /**
   * Test block visibility when using "pages" restriction but leaving
   * "pages" textarea empty
   */
  function testBlockVisibilityListedEmpty() {
    $block = array();

    // Create a random title for the block
    $title = $this->randomName(8);

    // Create the custom block
    $custom_block = array();
    $custom_block['info'] = $this->randomName(8);
    $custom_block['title'] = $title;
    $custom_block['body[value]'] = $this->randomName(32);
    $this->drupalPost('admin/structure/block/add', $custom_block, t('Save block'));

    $bid = db_query("SELECT bid FROM {block_custom} WHERE info = :info", array(':info' => $custom_block['info']))->fetchField();
    $block['module'] = 'block';
    $block['delta'] = $bid;
    $block['title'] = $title;

    // Move block to the first sidebar.
    $this->moveBlockToRegion($block, $this->regions[1]);

    // Set the block to be hidden on any user path, and to be shown only to
    // authenticated users.
    $edit = array();
    $edit['visibility'] = BLOCK_VISIBILITY_LISTED;
    $this->drupalPost('admin/structure/block/manage/' . $block['module'] . '/' . $block['delta'] . '/configure', $edit, t('Save block'));

    $this->drupalGet('');
    $this->assertNoText($title, 'Block was not displayed according to block visibility rules.');

    $this->drupalGet('user');
    $this->assertNoText($title, 'Block was not displayed according to block visibility rules regardless of path case.');

    // Confirm that the block is not displayed to anonymous users.
    $this->drupalLogout();
    $this->drupalGet('');
    $this->assertNoText($title, 'Block was not displayed to anonymous users.');
  }

  /**
   * Test user customization of block visibility.
   */
  function testBlockVisibilityPerUser() {
    $block = array();

    // Create a random title for the block.
    $title = $this->randomName(8);

    // Create our custom test block.
    $custom_block = array();
    $custom_block['info'] = $this->randomName(8);
    $custom_block['title'] = $title;
    $custom_block['body[value]'] = $this->randomName(32);
    $this->drupalPost('admin/structure/block/add', $custom_block, t('Save block'));

    $bid = db_query("SELECT bid FROM {block_custom} WHERE info = :info", array(':info' => $custom_block['info']))->fetchField();
    $block['module'] = 'block';
    $block['delta'] = $bid;
    $block['title'] = $title;

    // Move block to the first sidebar.
    $this->moveBlockToRegion($block, $this->regions[1]);

    // Set the block to be customizable per user, visible by default.
    $edit = array();
    $edit['custom'] = BLOCK_CUSTOM_ENABLED;
    $this->drupalPost('admin/structure/block/manage/' . $block['module'] . '/' . $block['delta'] . '/configure', $edit, t('Save block'));

    // Disable block visibility for the admin user.
    $edit = array();
    $edit['block[' . $block['module'] . '][' . $block['delta'] . ']'] = FALSE;
    $this->drupalPost('user/' . $this->admin_user->uid . '/edit', $edit, t('Save'));

    $this->drupalGet('');
    $this->assertNoText($block['title'], 'Block was not displayed according to per user block visibility setting.');

    // Set the block to be customizable per user, hidden by default.
    $edit = array();
    $edit['custom'] = BLOCK_CUSTOM_DISABLED;
    $this->drupalPost('admin/structure/block/manage/' . $block['module'] . '/' . $block['delta'] . '/configure', $edit, t('Save block'));

    // Enable block visibility for the admin user.
    $edit = array();
    $edit['block[' . $block['module'] . '][' . $block['delta'] . ']'] = TRUE;
    $this->drupalPost('user/' . $this->admin_user->uid . '/edit', $edit, t('Save'));

    $this->drupalGet('');
    $this->assertText($block['title'], 'Block was displayed according to per user block visibility setting.');
  }

  /**
   * Test configuring and moving a module-define block to specific regions.
   */
  function testBlock() {
    // Select the Navigation block to be configured and moved.
    $block = array();
    $block['module'] = 'system';
    $block['delta'] = 'management';
    $block['title'] = $this->randomName(8);

    // Set block title to confirm that interface works and override any custom titles.
    $this->drupalPost('admin/structure/block/manage/' . $block['module'] . '/' . $block['delta'] . '/configure', array('title' => $block['title']), t('Save block'));
    $this->assertText(t('The block configuration has been saved.'), 'Block title set.');
    $bid = db_query("SELECT bid FROM {block} WHERE module = :module AND delta = :delta", array(
      ':module' => $block['module'],
      ':delta' => $block['delta'],
    ))->fetchField();

    // Check to see if the block was created by checking that it's in the database.
    $this->assertTrue($bid, 'Block found in database');

    // Check whether the block can be moved to all available regions.
    foreach ($this->regions as $region) {
      $this->moveBlockToRegion($block, $region);
    }

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

    // Confirm that the block was moved to the proper region.
    $this->assertText(t('The block settings have been updated.'), 'Block successfully move to disabled region.');
    $this->assertNoText(t($block['title']), 'Block no longer appears on page.');

    // Confirm that the region's xpath is not available.
    $xpath = $this->buildXPathQuery('//div[@id=:id]/*', array(':id' => 'block-block-' . $bid));
    $this->assertNoFieldByXPath($xpath, FALSE, 'Custom block found in no regions.');

    // For convenience of developers, put the navigation block back.
    $edit = array();
    $edit['blocks[' . $block['module'] . '_' . $block['delta'] . '][region]'] = $this->regions[1];
    $this->drupalPost('admin/structure/block', $edit, t('Save blocks'));
    $this->assertText(t('The block settings have been updated.'), 'Block successfully move to first sidebar region.');

    $this->drupalPost('admin/structure/block/manage/' . $block['module'] . '/' . $block['delta'] . '/configure', array('title' => 'Navigation'), t('Save block'));
    $this->assertText(t('The block configuration has been saved.'), 'Block title set.');
  }

  function moveBlockToRegion($block, $region) {
    // Set the created block to a specific region.
    $edit = array();
    $edit['blocks[' . $block['module'] . '_' . $block['delta'] . '][region]'] = $region;
    $this->drupalPost('admin/structure/block', $edit, t('Save blocks'));

    // Confirm that the block was moved to the proper region.
    $this->assertText(t('The block settings have been updated.'), format_string('Block successfully moved to %region_name region.', array( '%region_name' => $region)));

    // Confirm that the block is being displayed.
    $this->drupalGet('node');
    $this->assertText(t($block['title']), 'Block successfully being displayed on the page.');

    // Confirm that the custom block was found at the proper region.
    $xpath = $this->buildXPathQuery('//div[@class=:region-class]//div[@id=:block-id]/*', array(
      ':region-class' => 'region region-' . str_replace('_', '-', $region),
      ':block-id' => 'block-' . $block['module'] . '-' . $block['delta'],
    ));
    $this->assertFieldByXPath($xpath, NULL, format_string('Custom block found in %region_name region.', array('%region_name' => $region)));
  }

  /**
   * Test _block_rehash().
   */
  function testBlockRehash() {
    module_enable(array('block_test'));
    $this->assertTrue(module_exists('block_test'), 'Test block module enabled.');

    // Our new block should be inserted in the database when we visit the
    // block management page.
    $this->drupalGet('admin/structure/block');
    // Our test block's caching should default to DRUPAL_CACHE_PER_ROLE.
    $current_caching = db_query("SELECT cache FROM {block} WHERE module = 'block_test' AND delta = 'test_cache'")->fetchField();
    $this->assertEqual($current_caching, DRUPAL_CACHE_PER_ROLE, 'Test block cache mode defaults to DRUPAL_CACHE_PER_ROLE.');

    // Disable caching for this block.
    variable_set('block_test_caching', DRUPAL_NO_CACHE);
    // Flushing all caches should call _block_rehash().
    drupal_flush_all_caches();
    // Verify that the database is updated with the new caching mode.
    $current_caching = db_query("SELECT cache FROM {block} WHERE module = 'block_test' AND delta = 'test_cache'")->fetchField();
    $this->assertEqual($current_caching, DRUPAL_NO_CACHE, "Test block's database entry updated to DRUPAL_NO_CACHE.");
  }
}

class NonDefaultBlockAdmin extends DrupalWebTestCase {
  public static function getInfo() {
    return array(
      'name' => 'Non default theme admin',
      'description' => 'Check the administer page for non default theme.',
      'group' => 'Block',
    );
  }

  /**
   * Test non-default theme admin.
   */
  function testNonDefaultBlockAdmin() {
    $admin_user = $this->drupalCreateUser(array('administer blocks', 'administer themes'));
    $this->drupalLogin($admin_user);
    theme_enable(array('stark'));
    $this->drupalGet('admin/structure/block/list/stark');
  }
}

/**
 * Test blocks correctly initialized when picking a new default theme.
 */
class NewDefaultThemeBlocks extends DrupalWebTestCase {
  public static function getInfo() {
    return array(
      'name' => 'New default theme blocks',
      'description' => 'Checks that the new default theme gets blocks.',
      'group' => 'Block',
    );
  }

  /**
   * Check the enabled Bartik blocks are correctly copied over.
   */
  function testNewDefaultThemeBlocks() {
    // Create administrative user.
    $admin_user = $this->drupalCreateUser(array('administer themes'));
    $this->drupalLogin($admin_user);

    // Ensure no other theme's blocks are in the block table yet.
    $themes = array();
    $themes['default'] = variable_get('theme_default', 'bartik');
    if ($admin_theme = variable_get('admin_theme')) {
      $themes['admin'] = $admin_theme;
    }
    $count = db_query_range('SELECT 1 FROM {block} WHERE theme NOT IN (:themes)', 0, 1, array(':themes' => $themes))->fetchField();
    $this->assertFalse($count, 'Only the default theme and the admin theme have blocks.');

    // Populate list of all blocks for matching against new theme.
    $blocks = array();
    $result = db_query('SELECT * FROM {block} WHERE theme = :theme', array(':theme' => $themes['default']));
    foreach ($result as $block) {
      // $block->theme and $block->bid will not match, so remove them.
      unset($block->theme, $block->bid);
      $blocks[$block->module][$block->delta] = $block;
    }

    // Turn on the Stark theme and ensure that it contains all of the blocks
    // the default theme had.
    theme_enable(array('stark'));
    variable_set('theme_default', 'stark');
    $result = db_query('SELECT * FROM {block} WHERE theme = :theme', array(':theme' => 'stark'));
    foreach ($result as $block) {
      unset($block->theme, $block->bid);
      $this->assertEqual($blocks[$block->module][$block->delta], $block, format_string('Block %name matched', array('%name' => $block->module . '-' . $block->delta)));
    }
  }
}

/**
 * Test the block system with admin themes.
 */
class BlockAdminThemeTestCase extends DrupalWebTestCase {
  public static function getInfo() {
    return array(
      'name' => 'Admin theme block admin accessibility',
      'description' => "Check whether the block administer page for a disabled theme accessible if and only if it's the admin theme.",
      'group' => 'Block',
    );
  }

  /**
   * Check for the accessibility of the admin theme on the  block admin page.
   */
  function testAdminTheme() {
    // Create administrative user.
    $admin_user = $this->drupalCreateUser(array('administer blocks', 'administer themes'));
    $this->drupalLogin($admin_user);

    // Ensure that access to block admin page is denied when theme is disabled.
    $this->drupalGet('admin/structure/block/list/stark');
    $this->assertResponse(403, 'The block admin page for a disabled theme can not be accessed');

    // Enable admin theme and confirm that tab is accessible.
    $edit['admin_theme'] = 'stark';
    $this->drupalPost('admin/appearance', $edit, t('Save configuration'));
    $this->drupalGet('admin/structure/block/list/stark');
    $this->assertResponse(200, 'The block admin page for the admin theme can be accessed');
  }
}

/**
 * Test block caching.
 */
class BlockCacheTestCase extends DrupalWebTestCase {
  protected $admin_user;
  protected $normal_user;
  protected $normal_user_alt;

  public static function getInfo() {
    return array(
      'name' => 'Block caching',
      'description' => 'Test block caching.',
      'group' => 'Block',
    );
  }

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

    // Create an admin user, log in and enable test blocks.
    $this->admin_user = $this->drupalCreateUser(array('administer blocks', 'access administration pages'));
    $this->drupalLogin($this->admin_user);

    // Create additional users to test caching modes.
    $this->normal_user = $this->drupalCreateUser();
    $this->normal_user_alt = $this->drupalCreateUser();
    // Sync the roles, since drupalCreateUser() creates separate roles for
    // the same permission sets.
    user_save($this->normal_user_alt, array('roles' => $this->normal_user->roles));
    $this->normal_user_alt->roles = $this->normal_user->roles;

    // Enable block caching.
    variable_set('block_cache', TRUE);

    // Enable our test block.
    $edit['blocks[block_test_test_cache][region]'] = 'sidebar_first';
    $this->drupalPost('admin/structure/block', $edit, t('Save blocks'));
  }

  /**
   * Test DRUPAL_CACHE_PER_ROLE.
   */
  function testCachePerRole() {
    $this->setCacheMode(DRUPAL_CACHE_PER_ROLE);

    // Enable our test block. Set some content for it to display.
    $current_content = $this->randomName();
    variable_set('block_test_content', $current_content);
    $this->drupalLogin($this->normal_user);
    $this->drupalGet('');
    $this->assertText($current_content, 'Block content displays.');

    // Change the content, but the cached copy should still be served.
    $old_content = $current_content;
    $current_content = $this->randomName();
    variable_set('block_test_content', $current_content);
    $this->drupalGet('');
    $this->assertText($old_content, 'Block is served from the cache.');

    // Clear the cache and verify that the stale data is no longer there.
    cache_clear_all();
    $this->drupalGet('');
    $this->assertNoText($old_content, 'Block cache clear removes stale cache data.');
    $this->assertText($current_content, 'Fresh block content is displayed after clearing the cache.');

    // Test whether the cached data is served for the correct users.
    $old_content = $current_content;
    $current_content = $this->randomName();
    variable_set('block_test_content', $current_content);
    $this->drupalLogout();
    $this->drupalGet('');
    $this->assertNoText($old_content, 'Anonymous user does not see content cached per-role for normal user.');

    $this->drupalLogin($this->normal_user_alt);
    $this->drupalGet('');
    $this->assertText($old_content, 'User with the same roles sees per-role cached content.');

    $this->drupalLogin($this->admin_user);
    $this->drupalGet('');
    $this->assertNoText($old_content, 'Admin user does not see content cached per-role for normal user.');

    $this->drupalLogin($this->normal_user);
    $this->drupalGet('');
    $this->assertText($old_content, 'Block is served from the per-role cache.');
  }

  /**
   * Test DRUPAL_CACHE_GLOBAL.
   */
  function testCacheGlobal() {
    $this->setCacheMode(DRUPAL_CACHE_GLOBAL);
    $current_content = $this->randomName();
    variable_set('block_test_content', $current_content);

    $this->drupalGet('');
    $this->assertText($current_content, 'Block content displays.');

    $old_content = $current_content;
    $current_content = $this->randomName();
    variable_set('block_test_content', $current_content);

    $this->drupalLogout();
    $this->drupalGet('user');
    $this->assertText($old_content, 'Block content served from global cache.');
  }

  /**
   * Test DRUPAL_NO_CACHE.
   */
  function testNoCache() {
    $this->setCacheMode(DRUPAL_NO_CACHE);
    $current_content = $this->randomName();
    variable_set('block_test_content', $current_content);

    // If DRUPAL_NO_CACHE has no effect, the next request would be cached.
    $this->drupalGet('');
    $this->assertText($current_content, 'Block content displays.');

    // A cached copy should not be served.
    $current_content = $this->randomName();
    variable_set('block_test_content', $current_content);
    $this->drupalGet('');
    $this->assertText($current_content, 'DRUPAL_NO_CACHE prevents blocks from being cached.');
  }

  /**
   * Test DRUPAL_CACHE_PER_USER.
   */
  function testCachePerUser() {
    $this->setCacheMode(DRUPAL_CACHE_PER_USER);
    $current_content = $this->randomName();
    variable_set('block_test_content', $current_content);
    $this->drupalLogin($this->normal_user);

    $this->drupalGet('');
    $this->assertText($current_content, 'Block content displays.');

    $old_content = $current_content;
    $current_content = $this->randomName();
    variable_set('block_test_content', $current_content);

    $this->drupalGet('');
    $this->assertText($old_content, 'Block is served from per-user cache.');

    $this->drupalLogin($this->normal_user_alt);
    $this->drupalGet('');
    $this->assertText($current_content, 'Per-user block cache is not served for other users.');

    $this->drupalLogin($this->normal_user);
    $this->drupalGet('');
    $this->assertText($old_content, 'Per-user block cache is persistent.');
  }

  /**
   * Test DRUPAL_CACHE_PER_PAGE.
   */
  function testCachePerPage() {
    $this->setCacheMode(DRUPAL_CACHE_PER_PAGE);
    $current_content = $this->randomName();
    variable_set('block_test_content', $current_content);

    $this->drupalGet('node');
    $this->assertText($current_content, 'Block content displays on the node page.');

    $old_content = $current_content;
    $current_content = $this->randomName();
    variable_set('block_test_content', $current_content);

    $this->drupalGet('user');
    $this->assertNoText($old_content, 'Block content cached for the node page does not show up for the user page.');
    $this->drupalGet('node');
    $this->assertText($old_content, 'Block content cached for the node page.');
  }

  /**
   * Private helper method to set the test block's cache mode.
   */
  private function setCacheMode($cache_mode) {
    db_update('block')
      ->fields(array('cache' => $cache_mode))
      ->condition('module', 'block_test')
      ->execute();

    $current_mode = db_query("SELECT cache FROM {block} WHERE module = 'block_test'")->fetchField();
    if ($current_mode != $cache_mode) {
      $this->fail(t('Unable to set cache mode to %mode. Current mode: %current_mode', array('%mode' => $cache_mode, '%current_mode' => $current_mode)));
    }
  }
}

/**
 * Test block HTML id validity.
 */
class BlockHTMLIdTestCase extends DrupalWebTestCase {
  protected $admin_user;

  public static function getInfo() {
    return array(
      'name' => 'Block HTML id',
      'description' => 'Test block HTML id validity.',
      'group' => 'Block',
    );
  }

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

    // Create an admin user, log in and enable test blocks.
    $this->admin_user = $this->drupalCreateUser(array('administer blocks', 'access administration pages'));
    $this->drupalLogin($this->admin_user);

    // Enable our test block.
    $edit['blocks[block_test_test_html_id][region]'] = 'sidebar_first';
    $this->drupalPost('admin/structure/block', $edit, t('Save blocks'));

    // Make sure the block has some content so it will appear
    $current_content = $this->randomName();
    variable_set('block_test_content', $current_content);
  }

  /**
   * Test valid HTML id.
   */
  function testHTMLId() {
    $this->drupalGet('');
    $this->assertRaw('block-block-test-test-html-id', 'HTML id for test block is valid.');
  }
}


/**
 * Unit tests for template_preprocess_block().
 */
class BlockTemplateSuggestionsUnitTest extends DrupalUnitTestCase {
  public static function getInfo() {
    return array(
      'name' => 'Block template suggestions',
      'description' => 'Test the template_preprocess_block() function.',
      'group' => 'Block',
    );
  }

  /**
   * Test if template_preprocess_block() handles the suggestions right.
   */
  function testBlockThemeHookSuggestions() {
    // Define block delta with underscore to be preprocessed
    $block1 = new stdClass();
    $block1->module = 'block';
    $block1->delta = 'underscore_test';
    $block1->region = 'footer';
    $variables1 = array();
    $variables1['elements']['#block'] = $block1;
    $variables1['elements']['#children'] = '';
    template_preprocess_block($variables1);
    $this->assertEqual($variables1['theme_hook_suggestions'], array('block__footer', 'block__block', 'block__block__underscore_test'), 'Found expected block suggestions for delta with underscore');

    // Define block delta with hyphens to be preprocessed. Hyphens should be
    // replaced with underscores.
    $block2 = new stdClass();
    $block2->module = 'block';
    $block2->delta = 'hyphen-test';
    $block2->region = 'footer';
    $variables2 = array();
    $variables2['elements']['#block'] = $block2;
    $variables2['elements']['#children'] = '';
    template_preprocess_block($variables2);
    $this->assertEqual($variables2['theme_hook_suggestions'], array('block__footer', 'block__block', 'block__block__hyphen_test'), 'Hyphens (-) in block delta were replaced by underscore (_)');
  }
}

/**
 * Tests for hook_block_view_MODULE_DELTA_alter().
 */
class BlockViewModuleDeltaAlterWebTest extends DrupalWebTestCase {

  public static function getInfo() {
    return array(
      'name' => 'Block view module delta alter',
      'description' => 'Test the hook_block_view_MODULE_DELTA_alter() hook.',
      'group' => 'Block',
    );
  }

  public function setUp() {
    parent::setUp(array('block_test'));
  }

  /**
   * Tests that the alter hook is called, even if the delta contains a hyphen.
   */
  public function testBlockViewModuleDeltaAlter() {
    $block = new stdClass;
    $block->module = 'block_test';
    $block->delta = 'test_underscore';
    $block->title = '';
    $render_array = _block_render_blocks(array('region' => $block));
    $render = array_pop($render_array);
    $test_underscore = $render->content['#markup'];
    $this->assertEqual($test_underscore, 'hook_block_view_MODULE_DELTA_alter', 'Found expected altered block content for delta with underscore');

    $block = new stdClass;
    $block->module = 'block_test';
    $block->delta = 'test-hyphen';
    $block->title = '';
    $render_array = _block_render_blocks(array('region' => $block));
    $render = array_pop($render_array);
    $test_hyphen = $render->content['#markup'];
    $this->assertEqual($test_hyphen, 'hook_block_view_MODULE_DELTA_alter', 'Hyphens (-) in block delta were replaced by underscore (_)');
  }

}

/**
 * Tests that hidden regions do not inherit blocks when a theme is enabled.
 */
class BlockHiddenRegionTestCase extends DrupalWebTestCase {
  public static function getInfo() {
    return array(
      'name' => 'Blocks not in hidden region',
      'description' => 'Checks that a newly enabled theme does not inherit blocks to its hidden regions.',
      'group' => 'Block',
    );
  }

  function setUp() {
    parent::setUp(array('block_test'));
  }

  /**
   * Tests that hidden regions do not inherit blocks when a theme is enabled.
   */
  function testBlockNotInHiddenRegion() {
    // Create administrative user.
    $admin_user = $this->drupalCreateUser(array('administer blocks', 'administer themes', 'search content'));
    $this->drupalLogin($admin_user);

    // Enable "block_test_theme" and set it as the default theme.
    $theme = 'block_test_theme';
    theme_enable(array($theme));
    variable_set('theme_default', $theme);
    menu_rebuild();

    // Ensure that "block_test_theme" is set as the default theme.
    $this->drupalGet('admin/structure/block');
    $this->assertText('Block test theme(' . t('active tab') . ')', 'Default local task on blocks admin page is the block test theme.');

    // Ensure that the search form block is displayed.
    $this->drupalGet('');
    $this->assertText('Search form', 'Block was displayed on the front page.');
  }
}

/**
 * Tests that a block assigned to an invalid region triggers the warning.
 */
class BlockInvalidRegionTestCase extends DrupalWebTestCase {
  public static function getInfo() {
    return array(
      'name' => 'Blocks in invalid regions',
      'description' => 'Checks that an active block assigned to a non-existing region triggers the warning message and is disabled.',
      'group' => 'Block',
    );
  }

  function setUp() {
    parent::setUp(array('block', 'block_test'));
    // Create an admin user.
    $admin_user = $this->drupalCreateUser(array('administer site configuration', 'access administration pages'));
    $this->drupalLogin($admin_user);
  }

  /**
   * Tests that blocks assigned to invalid regions work correctly.
   */
  function testBlockInInvalidRegion() {
    // Enable a test block in the default theme and place it in an invalid region.
    db_merge('block')
      ->key(array(
        'module' => 'block_test',
        'delta' => 'test_html_id',
        'theme' => variable_get('theme_default', 'stark'),
      ))
      ->fields(array(
        'status' => 1,
        'region' => 'invalid_region',
        'cache' => DRUPAL_NO_CACHE,
      ))
      ->execute();

    $warning_message = t('The block %info was assigned to the invalid region %region and has been disabled.', array('%info' => t('Test block html id'), '%region' => 'invalid_region'));

    // Clearing the cache should disable the test block placed in the invalid region.
    $this->drupalPost('admin/config/development/performance', array(), 'Clear all caches');
    $this->assertRaw($warning_message, 'Enabled block was in the invalid region and has been disabled.');

    // Clear the cache to check if the warning message is not triggered.
    $this->drupalPost('admin/config/development/performance', array(), 'Clear all caches');
    $this->assertNoRaw($warning_message, 'Disabled block in the invalid region will not trigger the warning.');

    // Place disabled test block in the invalid region of the default theme.
    db_merge('block')
      ->key(array(
        'module' => 'block_test',
        'delta' => 'test_html_id',
        'theme' => variable_get('theme_default', 'stark'),
      ))
      ->fields(array(
        'region' => 'invalid_region',
        'cache' => DRUPAL_NO_CACHE,
      ))
      ->execute();

    // Clear the cache to check if the warning message is not triggered.
    $this->drupalPost('admin/config/development/performance', array(), 'Clear all caches');
    $this->assertNoRaw($warning_message, 'Disabled block in the invalid region will not trigger the warning.');
  }
}

/**
 * Tests that block rehashing works correctly.
 */
class BlockHashTestCase extends DrupalWebTestCase {
  public static function getInfo() {
    return array(
      'name' => 'Block rehash',
      'description' => 'Checks _block_rehash() functionality.',
      'group' => 'Block',
    );
  }

  function setUp() {
    parent::setUp(array('block'));
  }

  /**
   * Tests that block rehashing does not write to the database too often.
   */
  function testBlockRehash() {
    // No hook_block_info_alter(), no save.
    $this->doRehash();
    module_enable(array('block_test'), FALSE);
    // Save the new blocks, check that the new blocks exist by checking weight.
    _block_rehash();
    $this->assertWeight(0);
    // Now hook_block_info_alter() exists but no blocks are saved on a second
    // rehash.
    $this->doRehash();
    $this->assertWeight(0);
    // Now hook_block_info_alter() exists and is changing one block which
    // should be saved.
    $GLOBALS['conf']['block_test_info_alter'] = 1;
    $this->doRehash(TRUE);
    $this->assertWeight(10000);
    // Now hook_block_info_alter() exists but already changed the block's
    // weight before, so it should not be saved again.
    $this->doRehash();
    $this->assertWeight(10000);
  }

  /**
   * Performs a block rehash and checks several related assertions.
   *
   * @param $alter_active
   *   Set to TRUE if the block_test module's hook_block_info_alter()
   *   implementation is expected to make a change that results in an existing
   *   block needing to be resaved to the database. Defaults to FALSE.
   */
  function doRehash($alter_active = FALSE) {
    $saves = 0;
    foreach (_block_rehash() as $block) {
      $module = $block['module'];
      $delta = $block['delta'];
      if ($alter_active && $module == 'block_test' && $delta == 'test_html_id') {
        $this->assertFalse(empty($block['saved']), "$module $delta saved");
        $saves++;
      }
      else {
        $this->assertTrue(empty($block['saved']), "$module $delta not saved");
      }
    }
    $this->assertEqual($alter_active, $saves);
  }

  /**
   * Asserts that the block_test module's block has a given weight.
   *
   * @param $weight
   *   The expected weight.
   */
  function assertWeight($weight) {
    $db_weight = db_query('SELECT weight FROM {block} WHERE module = :module AND delta = :delta', array(':module' => 'block_test', ':delta' => 'test_html_id'))->fetchField();
    // By casting to string the assert fails on FALSE.
    $this->assertIdentical((string) $db_weight, (string) $weight);
  }
}