class DevelToolbarTest

class DevelToolbarTest extends DevelBrowserTestBase {
    
    /**
     * {@inheritdoc}
     */
    public static $modules = [
        'devel',
        'toolbar',
        'block',
    ];
    
    /**
     * The user for tests.
     *
     * @var \Drupal\user\UserInterface
     */
    protected $toolbarUser;
    
    /**
     * The user for tests.
     *
     * @var \Drupal\user\UserInterface
     */
    protected $develUser;
    
    /**
     * The dafault toolbar items.
     *
     * @var array
     */
    protected $defaultToolbarItems = [
        'devel.cache_clear',
        'devel.container_info.service',
        'devel.admin_settings_link',
        'devel.menu_rebuild',
        'devel.reinstall',
        'devel.route_info',
        'devel.run_cron',
    ];
    
    /**
     * {@inheritdoc}
     */
    public function setUp() {
        parent::setUp();
        $this->drupalPlaceBlock('local_tasks_block');
        $this->drupalPlaceBlock('page_title_block');
        $this->develUser = $this->drupalCreateUser([
            'administer site configuration',
            'access devel information',
            'access toolbar',
        ]);
        $this->toolbarUser = $this->drupalCreateUser([
            'access toolbar',
        ]);
    }
    
    /**
     * Tests configuration form.
     */
    public function testConfigurationForm() {
        // Ensures that the page is accessible only to users with the adequate
        // permissions.
        $this->drupalGet('admin/config/development/devel/toolbar');
        $this->assertSession()
            ->statusCodeEquals(403);
        // Ensures that the config page is accessible for users with the adequate
        // permissions and the Devel toolbar local task and content are shown.
        $this->drupalLogin($this->develUser);
        $this->drupalGet('admin/config/development/devel/toolbar');
        $this->assertSession()
            ->statusCodeEquals(200);
        $this->assertSession()
            ->elementExists('xpath', '//h2[text()="Primary tabs"]/following-sibling::ul//a[contains(text(), "Toolbar Settings")]');
        $this->assertSession()
            ->elementExists('xpath', '//fieldset[@id="edit-toolbar-items--wrapper"]');
        $this->assertSession()
            ->pageTextContains('Devel Toolbar Settings');
        // Ensures and that all devel menu links are listed in the configuration
        // page.
        foreach ($this->getMenuLinkInfos() as $link) {
            $this->assertSession()
                ->fieldExists(sprintf('toolbar_items[%s]', $link['id']));
        }
        // Ensures and that the default configuration items are selected by
        // default.
        foreach ($this->defaultToolbarItems as $item) {
            $this->assertSession()
                ->checkboxChecked(sprintf('toolbar_items[%s]', $item));
        }
        // Ensures that the configuration save works as expected.
        $edit = [
            'toolbar_items[devel.event_info]' => 'devel.event_info',
            'toolbar_items[devel.theme_registry]' => 'devel.theme_registry',
        ];
        $this->drupalPostForm('admin/config/development/devel/toolbar', $edit, 'Save configuration');
        $this->assertSession()
            ->pageTextContains('The configuration options have been saved.');
        $expected_items = array_merge($this->defaultToolbarItems, [
            'devel.event_info',
            'devel.theme_registry',
        ]);
        sort($expected_items);
        $config_items = \Drupal::config('devel.toolbar.settings')->get('toolbar_items');
        sort($config_items);
        $this->assertEquals($expected_items, $config_items);
    }
    
    /**
     * Tests cache metadata headers.
     */
    public function testCacheHeaders() {
        // Disable user toolbar tab so we can test properly if the devel toolbar
        // implementation interferes with the page cacheability.
        \Drupal::service('module_installer')->install([
            'toolbar_disable_user_toolbar',
        ]);
        // The menu is not loaded for users without the adequate permission,
        // so no cache tags for configuration are added.
        $this->drupalLogin($this->toolbarUser);
        $this->assertSession()
            ->responseHeaderNotContains('X-Drupal-Cache-Tags', 'config:devel.toolbar.settings');
        $this->assertSession()
            ->responseHeaderNotContains('X-Drupal-Cache-Tags', 'config:system.menu.devel');
        // Make sure that the configuration cache tags are present for users with
        // the adequate permission.
        $this->drupalLogin($this->develUser);
        $this->assertSession()
            ->responseHeaderContains('X-Drupal-Cache-Tags', 'config:devel.toolbar.settings');
        $this->assertSession()
            ->responseHeaderContains('X-Drupal-Cache-Tags', 'config:system.menu.devel');
        // The Devel toolbar implementation should not interfere with the page
        // cacheability, so you expect a MISS value in the X-Drupal-Dynamic-Cache
        // header the first time.
        $this->assertSession()
            ->responseHeaderContains('X-Drupal-Dynamic-Cache', 'MISS');
        // Triggers a page reload and verify that the page is served from the
        // cache.
        $this->drupalGet('');
        $this->assertSession()
            ->responseHeaderContains('X-Drupal-Dynamic-Cache', 'HIT');
    }
    
    /**
     * Tests toolbar integration.
     */
    public function testToolbarIntegration() {
        $library_css_url = 'css/devel.toolbar.css';
        $toolbar_selector = '#toolbar-bar .toolbar-tab';
        $toolbar_tab_selector = '#toolbar-bar .toolbar-tab a.toolbar-icon-devel';
        $toolbar_tray_selector = '#toolbar-bar .toolbar-tab #toolbar-item-devel-tray';
        // Ensures that devel toolbar item is accessible only for user with the
        // adequate permissions.
        $this->drupalGet('');
        $this->assertSession()
            ->responseNotContains($library_css_url);
        $this->assertSession()
            ->elementNotExists('css', $toolbar_selector);
        $this->assertSession()
            ->elementNotExists('css', $toolbar_tab_selector);
        $this->drupalLogin($this->toolbarUser);
        $this->assertSession()
            ->responseNotContains($library_css_url);
        $this->assertSession()
            ->elementExists('css', $toolbar_selector);
        $this->assertSession()
            ->elementNotExists('css', $toolbar_tab_selector);
        $this->drupalLogin($this->develUser);
        $this->assertSession()
            ->responseContains($library_css_url);
        $this->assertSession()
            ->elementExists('css', $toolbar_selector);
        $this->assertSession()
            ->elementExists('css', $toolbar_tab_selector);
        $this->assertSession()
            ->elementTextContains('css', $toolbar_tab_selector, 'Devel');
        // Ensures that the configure link in the toolbar is present and point to
        // the correct page.
        $this->clickLink('Configure');
        $this->assertSession()
            ->addressEquals('admin/config/development/devel/toolbar');
        // Ensures that the toolbar tray contains the all the menu links. To the
        // links not marked as always visible will be assigned a css class that
        // allow to hide they when the toolbar has horizontal orientation.
        $this->drupalGet('');
        $toolbar_tray = $this->assertSession()
            ->elementExists('css', $toolbar_tray_selector);
        $devel_menu_items = $this->getMenuLinkInfos();
        $toolbar_items = $toolbar_tray->findAll('css', 'ul.toolbar-menu a');
        $this->assertCount(count($devel_menu_items), $toolbar_items);
        foreach ($devel_menu_items as $link) {
            $item_selector = sprintf('ul.toolbar-menu a:contains("%s")', $link['title']);
            $item = $this->assertSession()
                ->elementExists('css', $item_selector, $toolbar_tray);
            // Only test the url up to the ? as the destination and token parameters
            // will vary and are not checkable.
            $this->assertEquals(strtok($link['url'], '?'), strtok($item->getAttribute('href'), '?'));
            $not_visible = !in_array($link['id'], $this->defaultToolbarItems);
            $this->assertTrue($not_visible === $item->hasClass('toolbar-horizontal-item-hidden'));
        }
        // Ensures that changing the toolbar settings configuration the changes are
        // immediately visible.
        $saved_items = $this->config('devel.toolbar.settings')
            ->get('toolbar_items');
        $saved_items[] = 'devel.event_info';
        $this->config('devel.toolbar.settings')
            ->set('toolbar_items', $saved_items)
            ->save();
        $this->drupalGet('');
        $toolbar_tray = $this->assertSession()
            ->elementExists('css', $toolbar_tray_selector);
        $item = $this->assertSession()
            ->elementExists('css', sprintf('ul.toolbar-menu a:contains("%s")', 'Events Info'), $toolbar_tray);
        $this->assertFalse($item->hasClass('toolbar-horizontal-item-hidden'));
        // Ensures that disabling a menu link it will not more shown in the toolbar
        // and that the changes are immediately visible.
        $menu_link_manager = \Drupal::service('plugin.manager.menu.link');
        $menu_link_manager->updateDefinition('devel.event_info', [
            'enabled' => FALSE,
        ]);
        $this->drupalGet('');
        $toolbar_tray = $this->assertSession()
            ->elementExists('css', $toolbar_tray_selector);
        $this->assertSession()
            ->elementNotExists('css', sprintf('ul.toolbar-menu a:contains("%s")', 'Events Info'), $toolbar_tray);
    }
    
    /**
     * Tests devel when toolbar module is not installed.
     */
    public function testToolbarModuleNotInstalled() {
        // Ensures that when toolbar module is not installed all works properly.
        \Drupal::service('module_installer')->uninstall([
            'toolbar',
        ]);
        $this->drupalLogin($this->develUser);
        // Toolbar settings page should respond with 404.
        $this->drupalGet('admin/config/development/devel/toolbar');
        $this->assertSession()
            ->statusCodeEquals(404);
        // Primary local task should not contain toolbar tab.
        $this->drupalGet('admin/config/development/devel');
        $this->assertSession()
            ->statusCodeEquals(200);
        $this->assertSession()
            ->elementNotExists('xpath', '//a[contains(text(), "Toolbar Settings")]');
        // Toolbar setting config and devel menu cache tags sholud not present.
        $this->drupalGet('');
        $this->assertSession()
            ->responseHeaderNotContains('X-Drupal-Cache-Tags', 'config:devel.toolbar.settings');
        $this->assertSession()
            ->responseHeaderNotContains('X-Drupal-Cache-Tags', 'config:system.menu.devel');
    }
    
    /**
     * Helper function for retrieve the menu link informations.
     *
     * @return array
     *   An array containing the menu link informations.
     */
    protected function getMenuLinkInfos() {
        $parameters = new MenuTreeParameters();
        $parameters->onlyEnabledLinks()
            ->setTopLevelOnly();
        $tree = \Drupal::menuTree()->load('devel', $parameters);
        $links = [];
        foreach ($tree as $element) {
            $links[] = [
                'id' => $element->link
                    ->getPluginId(),
                'title' => $element->link
                    ->getTitle(),
                'url' => $element->link
                    ->getUrlObject()
                    ->toString(),
            ];
        }
        return $links;
    }

}