class NavigationLinkBlockTest

class NavigationLinkBlockTest extends PageCacheTagsTestBase {
    
    /**
     * {@inheritdoc}
     */
    protected static $modules = [
        'navigation',
        'test_page_test',
        'block',
    ];
    
    /**
     * {@inheritdoc}
     */
    protected $defaultTheme = 'stark';
    
    /**
     * User with permission to administer navigation blocks and access navigation.
     *
     * @var \Drupal\user\UserInterface
     */
    protected $adminUser;
    
    /**
     * An authenticated user to test navigation block caching.
     *
     * @var \Drupal\user\UserInterface
     */
    protected $normalUser;
    
    /**
     * {@inheritdoc}
     */
    protected function setUp() : void {
        parent::setUp();
        // Create an admin user, log in and enable test navigation blocks.
        $this->adminUser = $this->drupalCreateUser([
            'access administration pages',
            'administer site configuration',
            'access navigation',
        ]);
        // Create additional users to test caching modes.
        $this->normalUser = $this->drupalCreateUser([
            'access navigation',
        ]);
        // Add programmatically a link block to the navigation.
        $section_storage_manager = \Drupal::service('plugin.manager.layout_builder.section_storage');
        $cacheability = new CacheableMetadata();
        $contexts = [
            'navigation' => new Context(ContextDefinition::create('string'), 'navigation'),
        ];
        
        /** @var \Drupal\layout_builder\SectionListInterface $section_list */
        $section_list = $section_storage_manager->findByContext($contexts, $cacheability);
        $section = $section_list->getSection(0);
        $section->appendComponent(new SectionComponent(\Drupal::service('uuid')->generate(), 'content', [
            'id' => 'navigation_link',
            'label' => 'Admin Main Page',
            'label_display' => '0',
            'provider' => 'navigation',
            'context_mapping' => [],
            'title' => 'Navigation Settings',
            'uri' => 'internal:/admin/config/user-interface/navigation/settings',
            'icon_class' => 'admin-link',
        ]));
        $section_list->save();
    }
    
    /**
     * Test output of the link navigation with regards to caching and contents.
     */
    public function testNavigationLinkBlock() : void {
        // Verify some basic cacheability metadata. Ensures that we're not doing
        // anything so egregious as to upset expected caching behavior. In this
        // case, as an anonymous user, we should have zero effect on the page.
        $test_page_url = Url::fromRoute('test_page_test.test_page');
        $this->verifyPageCache($test_page_url, 'MISS');
        $this->verifyPageCache($test_page_url, 'HIT');
        // Login as a limited access user, and verify that the dynamic page cache
        // is working as expected.
        $this->drupalLogin($this->normalUser);
        $this->verifyDynamicPageCache($test_page_url, 'MISS');
        $this->verifyDynamicPageCache($test_page_url, 'HIT');
        // We should not see the admin page link in the page.
        $link_selector = '.admin-toolbar__item .toolbar-button--icon--admin-link';
        $this->assertSession()
            ->elementNotExists('css', $link_selector);
        // Login as a different user, UI should update.
        $this->drupalLogin($this->adminUser);
        $this->verifyDynamicPageCache($test_page_url, 'MISS');
        $this->verifyDynamicPageCache($test_page_url, 'HIT');
        $this->drupalGet(Url::fromRoute('navigation.settings'));
        $this->assertSession()
            ->statusCodeEquals(200);
        $this->assertSession()
            ->elementExists('css', $link_selector);
        $this->assertSession()
            ->elementTextContains('css', $link_selector, 'Navigation Settings');
        // The link should link to the admin page.
        $link = $this->getSession()
            ->getPage()
            ->find('named', [
            'link',
            'Navigation Settings',
        ]);
        $this->assertStringContainsString('/admin/config/user-interface/navigation/settings', $link->getAttribute('href'));
    }

}