class ExampleFunctionalTest

class ExampleFunctionalTest extends ExamplesBrowserTestBase {
    
    /**
     * {@inheritdoc}
     */
    protected $defaultTheme = 'stable';
    
    /**
     * {@inheritdoc}
     */
    public static $modules = [
        'node',
        'user',
    ];
    
    /**
     * Fixture user with administrative powers.
     *
     * @var \Drupal\user\UserInterface
     */
    protected $adminUser;
    
    /**
     * Fixture authenticated user with no permissions.
     *
     * @var \Drupal\user\UserInterface
     */
    protected $authUser;
    
    /**
     * {@inheritdoc}
     *
     * The setUp() method is run before every other test method, so commonalities
     * should go here.
     */
    protected function setUp() {
        parent::setUp();
        // Create users.
        $this->adminUser = $this->drupalCreateUser([
            'access administration pages',
            'view the administration theme',
            'administer permissions',
            'administer nodes',
            'administer content types',
        ]);
        $this->authUser = $this->drupalCreateUser([], 'authuser');
        // We have to create a content type because testing uses the 'testing'
        // profile, which has no content types by default.
        // Although we could have visited admin pages and pushed buttons to create
        // the content type, there happens to be function we can use in this case.
        $this->createContentType([
            'type' => 'test_content_type',
        ]);
    }
    
    /**
     * Demonstrate node creation through UI interaction.
     */
    public function testNewPage() {
        // We log in an administrator because they will have permissions to create
        // content.
        $this->drupalLogin($this->adminUser);
        // For many assertions, we need a WebAssert object. This object gives us
        // assertion types for the HTTP requests we make, such as content and the
        // HTTP status code.
        
        /** @var \Drupal\Tests\WebAssert $assert */
        $assert = $this->assertSession();
        // Get the page that lets us add new content.
        $this->drupalGet('node/add/test_content_type');
        // Use the WebAssert object to assert the HTTP status code.
        $assert->statusCodeEquals(200);
        // Set up our new piece of content.
        $nodeTitle = 'Test node for testNewPage';
        $edit = [
            'title[0][value]' => $nodeTitle,
            'body[0][value]' => 'Body of test node',
        ];
        // Tell Drupal to post our new content. We post to NULL for the URL which
        // tells drupalPostForm() to use the current page.
        $this->drupalPostForm(NULL, $edit, 'op');
        // Check our expectations.
        $assert->statusCodeEquals(200);
        $assert->linkExists($nodeTitle);
        // Log in our non-admin user and navigate to the node.
        $this->drupalLogin($this->authUser);
        // We can search for the node by its title. Since the node object can also
        // tell us its URL, we can just feed that information into drupalGet().
        
        /** @var \Drupal\node\NodeInterface $createdNode */
        $createdNode = $this->drupalGetNodeByTitle($nodeTitle);
        $url = $createdNode->toUrl();
        $this->drupalGet($url);
        $assert->statusCodeEquals(200);
        // Look at the page title.
        $assert->titleEquals("{$nodeTitle} | Drupal");
        // Find the title of the node itself.
        $nodeTitleElement = $this->getSession()
            ->getPage()
            ->find('css', 'h1 span');
        $this->assertEquals($nodeTitleElement->getText(), $nodeTitle);
    }
    
    /**
     * Demonstrate node creation via NodeCreationTrait::createNode.
     */
    public function testNewPageApiCreate() {
        $assert = $this->assertSession();
        $this->drupalLogin($this->adminUser);
        $nodeTitle = 'Test node for testNewPageApiCreate';
        // Create new node using API.
        $node = $this->drupalCreateNode([
            'type' => 'test_content_type',
            'title' => $nodeTitle,
            'body' => [
                [
                    'format' => filter_default_format($this->adminUser),
                    'value' => 'Body of test node',
                ],
            ],
        ]);
        $node->save();
        $url = $node->toUrl();
        // Confirm page creation.
        $this->drupalGet($url);
        $assert->statusCodeEquals(200);
        // Log in our normal user and navigate to the node.
        $this->drupalLogin($this->authUser);
        $this->drupalGet($url);
        $assert->statusCodeEquals(200);
        // Look at the *page* title.
        $assert->titleEquals("{$nodeTitle} | Drupal");
        // Find the title of the node itself.
        $nodeTitleElement = $this->getSession()
            ->getPage()
            ->find('css', 'h1 span');
        $this->assertEquals($nodeTitleElement->getText(), $nodeTitle);
    }

}