function PagePreviewTest::testPagePreview

Checks the node preview functionality.

File

core/modules/node/tests/src/Functional/PagePreviewTest.php, line 185

Class

PagePreviewTest

Tests the node entity preview functionality.

Namespace

Code

public function testPagePreview() {
    $title_key = 'title[0][value]';
    $body_key = 'body[0][value]';
    $term_key = $this->fieldName . '[target_id]';
    // Fill in node creation form and preview node.
    $edit = [];
    $edit[$title_key] = '<em>' . $this->randomMachineName(8) . '</em>';
    $edit[$body_key] = $this->randomMachineName(16);
    $edit[$term_key] = $this->term
        ->getName();
    // Upload an image.
    $test_image = current($this->drupalGetTestFiles('image', 39325));
    $edit['files[field_image_0][]'] = \Drupal::service('file_system')->realpath($test_image->uri);
    $this->drupalPostForm('node/add/page', $edit, t('Upload'));
    // Add an alt tag and preview the node.
    $this->drupalPostForm(NULL, [
        'field_image[0][alt]' => 'Picture of llamas',
    ], t('Preview'));
    // Check that the preview is displaying the title, body and term.
    $expected_title = $edit[$title_key] . ' | Drupal';
    $this->assertSession()
        ->titleEquals($expected_title);
    $this->assertEscaped($edit[$title_key]);
    $this->assertText($edit[$body_key], 'Body displayed.');
    $this->assertText($edit[$term_key], 'Term displayed.');
    $this->assertSession()
        ->linkExists(t('Back to content editing'));
    // Check that we see the class of the node type on the body element.
    $body_class_element = $this->xpath("//body[contains(@class, 'page-node-type-page')]");
    $this->assertTrue(!empty($body_class_element), 'Node type body class found.');
    // Get the UUID.
    $url = parse_url($this->getUrl());
    $paths = explode('/', $url['path']);
    $view_mode = array_pop($paths);
    $uuid = array_pop($paths);
    // Switch view mode. We'll remove the body from the teaser view mode.
    \Drupal::service('entity_display.repository')->getViewDisplay('node', 'page', 'teaser')
        ->removeComponent('body')
        ->save();
    $view_mode_edit = [
        'view_mode' => 'teaser',
    ];
    $this->drupalPostForm('node/preview/' . $uuid . '/full', $view_mode_edit, t('Switch'));
    $this->assertRaw('view-mode-teaser', 'View mode teaser class found.');
    $this->assertNoText($edit[$body_key], 'Body not displayed.');
    // Check that the title, body and term fields are displayed with the
    // values after going back to the content edit page.
    $this->clickLink(t('Back to content editing'));
    $this->assertFieldByName($title_key, $edit[$title_key], 'Title field displayed.');
    $this->assertFieldByName($body_key, $edit[$body_key], 'Body field displayed.');
    $this->assertFieldByName($term_key, $edit[$term_key], 'Term field displayed.');
    $this->assertFieldByName('field_image[0][alt]', 'Picture of llamas');
    $this->getSession()
        ->getPage()
        ->pressButton('Add another item');
    $this->assertFieldByName('field_test_multi[0][value]');
    $this->assertFieldByName('field_test_multi[1][value]');
    // Return to page preview to check everything is as expected.
    $this->drupalPostForm(NULL, [], t('Preview'));
    $this->assertSession()
        ->titleEquals($expected_title);
    $this->assertEscaped($edit[$title_key]);
    $this->assertText($edit[$body_key], 'Body displayed.');
    $this->assertText($edit[$term_key], 'Term displayed.');
    $this->assertSession()
        ->linkExists(t('Back to content editing'));
    // Assert the content is kept when reloading the page.
    $this->drupalGet('node/add/page', [
        'query' => [
            'uuid' => $uuid,
        ],
    ]);
    $this->assertFieldByName($title_key, $edit[$title_key], 'Title field displayed.');
    $this->assertFieldByName($body_key, $edit[$body_key], 'Body field displayed.');
    $this->assertFieldByName($term_key, $edit[$term_key], 'Term field displayed.');
    // Save the node - this is a new POST, so we need to upload the image.
    $this->drupalPostForm('node/add/page', $edit, t('Upload'));
    $this->drupalPostForm(NULL, [
        'field_image[0][alt]' => 'Picture of llamas',
    ], t('Save'));
    $node = $this->drupalGetNodeByTitle($edit[$title_key]);
    // Check the term was displayed on the saved node.
    $this->drupalGet('node/' . $node->id());
    $this->assertText($edit[$term_key], 'Term displayed.');
    // Check the term appears again on the edit form.
    $this->drupalGet('node/' . $node->id() . '/edit');
    $this->assertFieldByName($term_key, $edit[$term_key] . ' (' . $this->term
        ->id() . ')', 'Term field displayed.');
    // Check with two new terms on the edit form, additionally to the existing
    // one.
    $edit = [];
    $newterm1 = $this->randomMachineName(8);
    $newterm2 = $this->randomMachineName(8);
    $edit[$term_key] = $this->term
        ->getName() . ', ' . $newterm1 . ', ' . $newterm2;
    $this->drupalPostForm('node/' . $node->id() . '/edit', $edit, t('Preview'));
    $this->assertRaw('>' . $newterm1 . '<', 'First new term displayed.');
    $this->assertRaw('>' . $newterm2 . '<', 'Second new term displayed.');
    // The first term should be displayed as link, the others not.
    $this->assertSession()
        ->linkExists($this->term
        ->getName());
    $this->assertSession()
        ->linkNotExists($newterm1);
    $this->assertSession()
        ->linkNotExists($newterm2);
    $this->drupalPostForm('node/' . $node->id() . '/edit', $edit, t('Save'));
    // Check with one more new term, keeping old terms, removing the existing
    // one.
    $edit = [];
    $newterm3 = $this->randomMachineName(8);
    $edit[$term_key] = $newterm1 . ', ' . $newterm3 . ', ' . $newterm2;
    $this->drupalPostForm('node/' . $node->id() . '/edit', $edit, t('Preview'));
    $this->assertRaw('>' . $newterm1 . '<', 'First existing term displayed.');
    $this->assertRaw('>' . $newterm2 . '<', 'Second existing term displayed.');
    $this->assertRaw('>' . $newterm3 . '<', 'Third new term displayed.');
    $this->assertNoText($this->term
        ->getName());
    $this->assertSession()
        ->linkExists($newterm1);
    $this->assertSession()
        ->linkExists($newterm2);
    $this->assertSession()
        ->linkNotExists($newterm3);
    // Check that editing an existing node after it has been previewed and not
    // saved doesn't remember the previous changes.
    $edit = [
        $title_key => $this->randomMachineName(8),
    ];
    $this->drupalPostForm('node/' . $node->id() . '/edit', $edit, t('Preview'));
    $this->assertText($edit[$title_key], 'New title displayed.');
    $this->clickLink(t('Back to content editing'));
    $this->assertFieldByName($title_key, $edit[$title_key], 'New title value displayed.');
    // Navigate away from the node without saving.
    $this->drupalGet('<front>');
    // Go back to the edit form, the title should have its initial value.
    $this->drupalGet('node/' . $node->id() . '/edit');
    $this->assertFieldByName($title_key, $node->label(), 'Correct title value displayed.');
    // Check with required preview.
    $node_type = NodeType::load('page');
    $node_type->setPreviewMode(DRUPAL_REQUIRED);
    $node_type->save();
    $this->drupalGet('node/add/page');
    $this->assertNoRaw('edit-submit');
    $this->drupalPostForm('node/add/page', [
        $title_key => 'Preview',
    ], t('Preview'));
    $this->clickLink(t('Back to content editing'));
    $this->assertRaw('edit-submit');
    // Check that destination is remembered when clicking on preview. When going
    // back to the edit form and clicking save, we should go back to the
    // original destination, if set.
    $destination = 'node';
    $this->drupalPostForm($node->toUrl('edit-form'), [], t('Preview'), [
        'query' => [
            'destination' => $destination,
        ],
    ]);
    $parameters = [
        'node_preview' => $node->uuid(),
        'view_mode_id' => 'full',
    ];
    $options = [
        'absolute' => TRUE,
        'query' => [
            'destination' => $destination,
        ],
    ];
    $this->assertUrl(Url::fromRoute('entity.node.preview', $parameters, $options));
    $this->drupalPostForm(NULL, [
        'view_mode' => 'teaser',
    ], t('Switch'));
    $this->clickLink(t('Back to content editing'));
    $this->drupalPostForm(NULL, [], t('Save'));
    $this->assertUrl($destination);
    // Check that preview page works as expected without a destination set.
    $this->drupalPostForm($node->toUrl('edit-form'), [], t('Preview'));
    $parameters = [
        'node_preview' => $node->uuid(),
        'view_mode_id' => 'full',
    ];
    $this->assertUrl(Url::fromRoute('entity.node.preview', $parameters, [
        'absolute' => TRUE,
    ]));
    $this->drupalPostForm(NULL, [
        'view_mode' => 'teaser',
    ], t('Switch'));
    $this->clickLink(t('Back to content editing'));
    $this->drupalPostForm(NULL, [], t('Save'));
    $this->assertUrl($node->toUrl());
    $this->assertSession()
        ->statusCodeEquals(200);
    
    /** @var \Drupal\Core\File\FileSystemInterface $file_system */
    $file_system = \Drupal::service('file_system');
    // Assert multiple items can be added and are not lost when previewing.
    $test_image_1 = current($this->drupalGetTestFiles('image', 39325));
    $edit_image_1['files[field_image_0][]'] = $file_system->realpath($test_image_1->uri);
    $test_image_2 = current($this->drupalGetTestFiles('image', 39325));
    $edit_image_2['files[field_image_1][]'] = $file_system->realpath($test_image_2->uri);
    $edit['field_image[0][alt]'] = 'Alt 1';
    $this->drupalPostForm('node/add/page', $edit_image_1, t('Upload'));
    $this->drupalPostForm(NULL, $edit, t('Preview'));
    $this->clickLink(t('Back to content editing'));
    $this->assertFieldByName('files[field_image_1][]');
    $this->drupalPostForm(NULL, $edit_image_2, t('Upload'));
    $this->assertNoFieldByName('files[field_image_1][]');
    $title = 'node_test_title';
    $example_text_1 = 'example_text_preview_1';
    $example_text_2 = 'example_text_preview_2';
    $example_text_3 = 'example_text_preview_3';
    $this->drupalGet('node/add/page');
    $edit = [
        'title[0][value]' => $title,
        'field_test_multi[0][value]' => $example_text_1,
    ];
    $this->assertRaw('Storage is not set');
    $this->drupalPostForm(NULL, $edit, t('Preview'));
    $this->clickLink(t('Back to content editing'));
    $this->assertRaw('Storage is set');
    $this->assertFieldByName('field_test_multi[0][value]');
    $this->drupalPostForm(NULL, [], t('Save'));
    $this->assertText('Basic page ' . $title . ' has been created.');
    $node = $this->drupalGetNodeByTitle($title);
    $this->drupalGet('node/' . $node->id() . '/edit');
    $this->getSession()
        ->getPage()
        ->pressButton('Add another item');
    $this->getSession()
        ->getPage()
        ->pressButton('Add another item');
    $edit = [
        'field_test_multi[1][value]' => $example_text_2,
        'field_test_multi[2][value]' => $example_text_3,
    ];
    $this->drupalPostForm(NULL, $edit, t('Preview'));
    $this->clickLink(t('Back to content editing'));
    $this->drupalPostForm(NULL, $edit, t('Preview'));
    $this->clickLink(t('Back to content editing'));
    $this->assertFieldByName('field_test_multi[0][value]', $example_text_1);
    $this->assertFieldByName('field_test_multi[1][value]', $example_text_2);
    $this->assertFieldByName('field_test_multi[2][value]', $example_text_3);
    // Now save the node and make sure all values got saved.
    $this->drupalPostForm(NULL, [], t('Save'));
    $this->assertText($example_text_1);
    $this->assertText($example_text_2);
    $this->assertText($example_text_3);
    // Edit again, change the menu_ui settings and click on preview.
    $this->drupalGet('node/' . $node->id() . '/edit');
    $edit = [
        'menu[enabled]' => TRUE,
        'menu[title]' => 'Changed title',
    ];
    $this->drupalPostForm(NULL, $edit, t('Preview'));
    $this->clickLink(t('Back to content editing'));
    $this->assertFieldChecked('edit-menu-enabled', 'Menu option is still checked');
    $this->assertFieldByName('menu[title]', 'Changed title', 'Menu link title is correct after preview');
    // Save, change the title while saving and make sure that it is correctly
    // saved.
    $edit = [
        'menu[enabled]' => TRUE,
        'menu[title]' => 'Second title change',
    ];
    $this->drupalPostForm(NULL, $edit, t('Save'));
    $this->drupalGet('node/' . $node->id() . '/edit');
    $this->assertFieldByName('menu[title]', 'Second title change', 'Menu link title is correct after saving');
}