Chris@0: <?php
Chris@0: 
Chris@0: namespace Drupal\node\Tests;
Chris@0: 
Chris@0: use Drupal\comment\Tests\CommentTestTrait;
Chris@0: use Drupal\Core\Field\FieldStorageDefinitionInterface;
Chris@0: use Drupal\Component\Utility\Unicode;
Chris@0: use Drupal\Core\Language\LanguageInterface;
Chris@0: use Drupal\Core\Url;
Chris@0: use Drupal\field\Tests\EntityReference\EntityReferenceTestTrait;
Chris@0: use Drupal\field\Entity\FieldConfig;
Chris@0: use Drupal\field\Entity\FieldStorageConfig;
Chris@0: use Drupal\node\Entity\NodeType;
Chris@0: use Drupal\taxonomy\Entity\Term;
Chris@0: use Drupal\taxonomy\Entity\Vocabulary;
Chris@0: 
Chris@0: /**
Chris@0:  * Tests the node entity preview functionality.
Chris@0:  *
Chris@0:  * @group node
Chris@0:  */
Chris@0: class PagePreviewTest extends NodeTestBase {
Chris@0: 
Chris@0:   use EntityReferenceTestTrait;
Chris@0:   use CommentTestTrait;
Chris@0: 
Chris@0:   /**
Chris@0:    * Enable the comment, node and taxonomy modules to test on the preview.
Chris@0:    *
Chris@0:    * @var array
Chris@0:    */
Chris@0:   public static $modules = ['node', 'taxonomy', 'comment', 'image', 'file', 'text', 'node_test', 'menu_ui'];
Chris@0: 
Chris@0:   /**
Chris@0:    * The name of the created field.
Chris@0:    *
Chris@0:    * @var string
Chris@0:    */
Chris@0:   protected $fieldName;
Chris@0: 
Chris@0:   protected function setUp() {
Chris@0:     parent::setUp();
Chris@0:     $this->addDefaultCommentField('node', 'page');
Chris@0: 
Chris@0:     $web_user = $this->drupalCreateUser(['edit own page content', 'create page content', 'administer menu']);
Chris@0:     $this->drupalLogin($web_user);
Chris@0: 
Chris@0:     // Add a vocabulary so we can test different view modes.
Chris@0:     $vocabulary = Vocabulary::create([
Chris@0:       'name' => $this->randomMachineName(),
Chris@0:       'description' => $this->randomMachineName(),
Chris@0:       'vid' => $this->randomMachineName(),
Chris@0:       'langcode' => LanguageInterface::LANGCODE_NOT_SPECIFIED,
Chris@0:       'help' => '',
Chris@0:     ]);
Chris@0:     $vocabulary->save();
Chris@0: 
Chris@0:     $this->vocabulary = $vocabulary;
Chris@0: 
Chris@0:     // Add a term to the vocabulary.
Chris@0:     $term = Term::create([
Chris@0:       'name' => $this->randomMachineName(),
Chris@0:       'description' => $this->randomMachineName(),
Chris@0:       'vid' => $this->vocabulary->id(),
Chris@0:       'langcode' => LanguageInterface::LANGCODE_NOT_SPECIFIED,
Chris@0:     ]);
Chris@0:     $term->save();
Chris@0: 
Chris@0:     $this->term = $term;
Chris@0: 
Chris@0:     // Create an image field.
Chris@0:     FieldStorageConfig::create([
Chris@0:       'field_name' => 'field_image',
Chris@0:       'entity_type' => 'node',
Chris@0:       'type' => 'image',
Chris@0:       'settings' => [],
Chris@0:       'cardinality' => FieldStorageConfig::CARDINALITY_UNLIMITED,
Chris@0:     ])->save();
Chris@0: 
Chris@0:     $field_config = FieldConfig::create([
Chris@0:       'field_name' => 'field_image',
Chris@0:       'label' => 'Images',
Chris@0:       'entity_type' => 'node',
Chris@0:       'bundle' => 'page',
Chris@0:       'required' => FALSE,
Chris@0:       'settings' => [],
Chris@0:     ]);
Chris@0:     $field_config->save();
Chris@0: 
Chris@0:     // Create a field.
Chris@0:     $this->fieldName = Unicode::strtolower($this->randomMachineName());
Chris@0:     $handler_settings = [
Chris@0:       'target_bundles' => [
Chris@0:         $this->vocabulary->id() => $this->vocabulary->id(),
Chris@0:       ],
Chris@0:       'auto_create' => TRUE,
Chris@0:     ];
Chris@0:     $this->createEntityReferenceField('node', 'page', $this->fieldName, 'Tags', 'taxonomy_term', 'default', $handler_settings, FieldStorageDefinitionInterface::CARDINALITY_UNLIMITED);
Chris@0: 
Chris@0:     entity_get_form_display('node', 'page', 'default')
Chris@0:       ->setComponent($this->fieldName, [
Chris@0:         'type' => 'entity_reference_autocomplete_tags',
Chris@0:       ])
Chris@0:       ->save();
Chris@0: 
Chris@0:     // Show on default display and teaser.
Chris@0:     entity_get_display('node', 'page', 'default')
Chris@0:       ->setComponent($this->fieldName, [
Chris@0:         'type' => 'entity_reference_label',
Chris@0:       ])
Chris@0:       ->save();
Chris@0:     entity_get_display('node', 'page', 'teaser')
Chris@0:       ->setComponent($this->fieldName, [
Chris@0:         'type' => 'entity_reference_label',
Chris@0:       ])
Chris@0:       ->save();
Chris@0: 
Chris@0:     entity_get_form_display('node', 'page', 'default')
Chris@0:       ->setComponent('field_image', [
Chris@0:         'type' => 'image_image',
Chris@0:         'settings' => [],
Chris@0:       ])
Chris@0:       ->save();
Chris@0: 
Chris@0:     entity_get_display('node', 'page', 'default')
Chris@0:       ->setComponent('field_image')
Chris@0:       ->save();
Chris@0: 
Chris@0:     // Create a multi-value text field.
Chris@0:     $field_storage = FieldStorageConfig::create([
Chris@0:       'field_name' => 'field_test_multi',
Chris@0:       'entity_type' => 'node',
Chris@0:       'cardinality' => FieldStorageDefinitionInterface::CARDINALITY_UNLIMITED,
Chris@0:       'type' => 'text',
Chris@0:       'settings' => [
Chris@0:         'max_length' => 50,
Chris@0:       ]
Chris@0:     ]);
Chris@0:     $field_storage->save();
Chris@0:     FieldConfig::create([
Chris@0:       'field_storage' => $field_storage,
Chris@0:       'bundle' => 'page',
Chris@0:     ])->save();
Chris@0: 
Chris@0:     entity_get_form_display('node', 'page', 'default')
Chris@0:       ->setComponent('field_test_multi', [
Chris@0:         'type' => 'text_textfield',
Chris@0:       ])
Chris@0:       ->save();
Chris@0: 
Chris@0:     entity_get_display('node', 'page', 'default')
Chris@0:       ->setComponent('field_test_multi', [
Chris@0:         'type' => 'string',
Chris@0:       ])
Chris@0:       ->save();
Chris@0:   }
Chris@0: 
Chris@0:   /**
Chris@0:    * Checks the node preview functionality.
Chris@0:    */
Chris@0:   public function testPagePreview() {
Chris@0:     $title_key = 'title[0][value]';
Chris@0:     $body_key = 'body[0][value]';
Chris@0:     $term_key = $this->fieldName . '[target_id]';
Chris@0: 
Chris@0:     // Fill in node creation form and preview node.
Chris@0:     $edit = [];
Chris@0:     $edit[$title_key] = '<em>' . $this->randomMachineName(8) . '</em>';
Chris@0:     $edit[$body_key] = $this->randomMachineName(16);
Chris@0:     $edit[$term_key] = $this->term->getName();
Chris@0: 
Chris@0:     // Upload an image.
Chris@0:     $test_image = current($this->drupalGetTestFiles('image', 39325));
Chris@0:     $edit['files[field_image_0][]'] = drupal_realpath($test_image->uri);
Chris@0:     $this->drupalPostForm('node/add/page', $edit, t('Upload'));
Chris@0: 
Chris@0:     // Add an alt tag and preview the node.
Chris@0:     $this->drupalPostForm(NULL, ['field_image[0][alt]' => 'Picture of llamas'], t('Preview'));
Chris@0: 
Chris@0:     // Check that the preview is displaying the title, body and term.
Chris@0:     $this->assertTitle(t('@title | Drupal', ['@title' => $edit[$title_key]]), 'Basic page title is preview.');
Chris@0:     $this->assertEscaped($edit[$title_key], 'Title displayed and escaped.');
Chris@0:     $this->assertText($edit[$body_key], 'Body displayed.');
Chris@0:     $this->assertText($edit[$term_key], 'Term displayed.');
Chris@0:     $this->assertLink(t('Back to content editing'));
Chris@0: 
Chris@0:     // Get the UUID.
Chris@0:     $url = parse_url($this->getUrl());
Chris@0:     $paths = explode('/', $url['path']);
Chris@0:     $view_mode = array_pop($paths);
Chris@0:     $uuid = array_pop($paths);
Chris@0: 
Chris@0:     // Switch view mode. We'll remove the body from the teaser view mode.
Chris@0:     entity_get_display('node', 'page', 'teaser')
Chris@0:       ->removeComponent('body')
Chris@0:       ->save();
Chris@0: 
Chris@0:     $view_mode_edit = ['view_mode' => 'teaser'];
Chris@0:     $this->drupalPostForm('node/preview/' . $uuid . '/full', $view_mode_edit, t('Switch'));
Chris@0:     $this->assertRaw('view-mode-teaser', 'View mode teaser class found.');
Chris@0:     $this->assertNoText($edit[$body_key], 'Body not displayed.');
Chris@0: 
Chris@0:     // Check that the title, body and term fields are displayed with the
Chris@0:     // values after going back to the content edit page.
Chris@0:     $this->clickLink(t('Back to content editing'));
Chris@0:     $this->assertFieldByName($title_key, $edit[$title_key], 'Title field displayed.');
Chris@0:     $this->assertFieldByName($body_key, $edit[$body_key], 'Body field displayed.');
Chris@0:     $this->assertFieldByName($term_key, $edit[$term_key], 'Term field displayed.');
Chris@0:     $this->assertFieldByName('field_image[0][alt]', 'Picture of llamas');
Chris@0:     $this->drupalPostAjaxForm(NULL, [], ['field_test_multi_add_more' => t('Add another item')], NULL, [], [], 'node-page-form');
Chris@0:     $this->assertFieldByName('field_test_multi[0][value]');
Chris@0:     $this->assertFieldByName('field_test_multi[1][value]');
Chris@0: 
Chris@0:     // Return to page preview to check everything is as expected.
Chris@0:     $this->drupalPostForm(NULL, [], t('Preview'));
Chris@0:     $this->assertTitle(t('@title | Drupal', ['@title' => $edit[$title_key]]), 'Basic page title is preview.');
Chris@0:     $this->assertEscaped($edit[$title_key], 'Title displayed and escaped.');
Chris@0:     $this->assertText($edit[$body_key], 'Body displayed.');
Chris@0:     $this->assertText($edit[$term_key], 'Term displayed.');
Chris@0:     $this->assertLink(t('Back to content editing'));
Chris@0: 
Chris@0:     // Assert the content is kept when reloading the page.
Chris@0:     $this->drupalGet('node/add/page', ['query' => ['uuid' => $uuid]]);
Chris@0:     $this->assertFieldByName($title_key, $edit[$title_key], 'Title field displayed.');
Chris@0:     $this->assertFieldByName($body_key, $edit[$body_key], 'Body field displayed.');
Chris@0:     $this->assertFieldByName($term_key, $edit[$term_key], 'Term field displayed.');
Chris@0: 
Chris@0:     // Save the node - this is a new POST, so we need to upload the image.
Chris@0:     $this->drupalPostForm('node/add/page', $edit, t('Upload'));
Chris@0:     $this->drupalPostForm(NULL, ['field_image[0][alt]' => 'Picture of llamas'], t('Save'));
Chris@0:     $node = $this->drupalGetNodeByTitle($edit[$title_key]);
Chris@0: 
Chris@0:     // Check the term was displayed on the saved node.
Chris@0:     $this->drupalGet('node/' . $node->id());
Chris@0:     $this->assertText($edit[$term_key], 'Term displayed.');
Chris@0: 
Chris@0:     // Check the term appears again on the edit form.
Chris@0:     $this->drupalGet('node/' . $node->id() . '/edit');
Chris@0:     $this->assertFieldByName($term_key, $edit[$term_key] . ' (' . $this->term->id() . ')', 'Term field displayed.');
Chris@0: 
Chris@0:     // Check with two new terms on the edit form, additionally to the existing
Chris@0:     // one.
Chris@0:     $edit = [];
Chris@0:     $newterm1 = $this->randomMachineName(8);
Chris@0:     $newterm2 = $this->randomMachineName(8);
Chris@0:     $edit[$term_key] = $this->term->getName() . ', ' . $newterm1 . ', ' . $newterm2;
Chris@0:     $this->drupalPostForm('node/' . $node->id() . '/edit', $edit, t('Preview'));
Chris@0:     $this->assertRaw('>' . $newterm1 . '<', 'First new term displayed.');
Chris@0:     $this->assertRaw('>' . $newterm2 . '<', 'Second new term displayed.');
Chris@0:     // The first term should be displayed as link, the others not.
Chris@0:     $this->assertLink($this->term->getName());
Chris@0:     $this->assertNoLink($newterm1);
Chris@0:     $this->assertNoLink($newterm2);
Chris@0: 
Chris@0:     $this->drupalPostForm('node/' . $node->id() . '/edit', $edit, t('Save'));
Chris@0: 
Chris@0:     // Check with one more new term, keeping old terms, removing the existing
Chris@0:     // one.
Chris@0:     $edit = [];
Chris@0:     $newterm3 = $this->randomMachineName(8);
Chris@0:     $edit[$term_key] = $newterm1 . ', ' . $newterm3 . ', ' . $newterm2;
Chris@0:     $this->drupalPostForm('node/' . $node->id() . '/edit', $edit, t('Preview'));
Chris@0:     $this->assertRaw('>' . $newterm1 . '<', 'First existing term displayed.');
Chris@0:     $this->assertRaw('>' . $newterm2 . '<', 'Second existing term displayed.');
Chris@0:     $this->assertRaw('>' . $newterm3 . '<', 'Third new term displayed.');
Chris@0:     $this->assertNoText($this->term->getName());
Chris@0:     $this->assertLink($newterm1);
Chris@0:     $this->assertLink($newterm2);
Chris@0:     $this->assertNoLink($newterm3);
Chris@0: 
Chris@0:     // Check that editing an existing node after it has been previewed and not
Chris@0:     // saved doesn't remember the previous changes.
Chris@0:     $edit = [
Chris@0:       $title_key => $this->randomMachineName(8),
Chris@0:     ];
Chris@0:     $this->drupalPostForm('node/' . $node->id() . '/edit', $edit, t('Preview'));
Chris@0:     $this->assertText($edit[$title_key], 'New title displayed.');
Chris@0:     $this->clickLink(t('Back to content editing'));
Chris@0:     $this->assertFieldByName($title_key, $edit[$title_key], 'New title value displayed.');
Chris@0:     // Navigate away from the node without saving.
Chris@0:     $this->drupalGet('<front>');
Chris@0:     // Go back to the edit form, the title should have its initial value.
Chris@0:     $this->drupalGet('node/' . $node->id() . '/edit');
Chris@0:     $this->assertFieldByName($title_key, $node->label(), 'Correct title value displayed.');
Chris@0: 
Chris@0:     // Check with required preview.
Chris@0:     $node_type = NodeType::load('page');
Chris@0:     $node_type->setPreviewMode(DRUPAL_REQUIRED);
Chris@0:     $node_type->save();
Chris@0:     $this->drupalGet('node/add/page');
Chris@0:     $this->assertNoRaw('edit-submit');
Chris@0:     $this->drupalPostForm('node/add/page', [$title_key => 'Preview'], t('Preview'));
Chris@0:     $this->clickLink(t('Back to content editing'));
Chris@0:     $this->assertRaw('edit-submit');
Chris@0: 
Chris@0:     // Check that destination is remembered when clicking on preview. When going
Chris@0:     // back to the edit form and clicking save, we should go back to the
Chris@0:     // original destination, if set.
Chris@0:     $destination = 'node';
Chris@0:     $this->drupalPostForm($node->toUrl('edit-form'), [], t('Preview'), ['query' => ['destination' => $destination]]);
Chris@0:     $parameters = ['node_preview' => $node->uuid(), 'view_mode_id' => 'full'];
Chris@0:     $options = ['absolute' => TRUE, 'query' => ['destination' => $destination]];
Chris@0:     $this->assertUrl(Url::fromRoute('entity.node.preview', $parameters, $options));
Chris@0:     $this->drupalPostForm(NULL, ['view_mode' => 'teaser'], t('Switch'));
Chris@0:     $this->clickLink(t('Back to content editing'));
Chris@0:     $this->drupalPostForm(NULL, [], t('Save'));
Chris@0:     $this->assertUrl($destination);
Chris@0: 
Chris@0:     // Check that preview page works as expected without a destination set.
Chris@0:     $this->drupalPostForm($node->toUrl('edit-form'), [], t('Preview'));
Chris@0:     $parameters = ['node_preview' => $node->uuid(), 'view_mode_id' => 'full'];
Chris@0:     $this->assertUrl(Url::fromRoute('entity.node.preview', $parameters, ['absolute' => TRUE]));
Chris@0:     $this->drupalPostForm(NULL, ['view_mode' => 'teaser'], t('Switch'));
Chris@0:     $this->clickLink(t('Back to content editing'));
Chris@0:     $this->drupalPostForm(NULL, [], t('Save'));
Chris@0:     $this->assertUrl($node->toUrl());
Chris@0:     $this->assertResponse(200);
Chris@0: 
Chris@0:     // Assert multiple items can be added and are not lost when previewing.
Chris@0:     $test_image_1 = current($this->drupalGetTestFiles('image', 39325));
Chris@0:     $edit_image_1['files[field_image_0][]'] = drupal_realpath($test_image_1->uri);
Chris@0:     $test_image_2 = current($this->drupalGetTestFiles('image', 39325));
Chris@0:     $edit_image_2['files[field_image_1][]'] = drupal_realpath($test_image_2->uri);
Chris@0:     $edit['field_image[0][alt]'] = 'Alt 1';
Chris@0: 
Chris@0:     $this->drupalPostForm('node/add/page', $edit_image_1, t('Upload'));
Chris@0:     $this->drupalPostForm(NULL, $edit, t('Preview'));
Chris@0:     $this->clickLink(t('Back to content editing'));
Chris@0:     $this->assertFieldByName('files[field_image_1][]');
Chris@0:     $this->drupalPostForm(NULL, $edit_image_2, t('Upload'));
Chris@0:     $this->assertNoFieldByName('files[field_image_1][]');
Chris@0: 
Chris@0:     $title = 'node_test_title';
Chris@0:     $example_text_1 = 'example_text_preview_1';
Chris@0:     $example_text_2 = 'example_text_preview_2';
Chris@0:     $example_text_3 = 'example_text_preview_3';
Chris@0:     $this->drupalGet('node/add/page');
Chris@0:     $edit = [
Chris@0:       'title[0][value]' => $title,
Chris@0:       'field_test_multi[0][value]' => $example_text_1,
Chris@0:     ];
Chris@0:     $this->assertRaw('Storage is not set');
Chris@0:     $this->drupalPostForm(NULL, $edit, t('Preview'));
Chris@0:     $this->clickLink(t('Back to content editing'));
Chris@0:     $this->assertRaw('Storage is set');
Chris@0:     $this->assertFieldByName('field_test_multi[0][value]');
Chris@0:     $this->drupalPostForm(NULL, [], t('Save'));
Chris@0:     $this->assertText('Basic page ' . $title . ' has been created.');
Chris@0:     $node = $this->drupalGetNodeByTitle($title);
Chris@0:     $this->drupalGet('node/' . $node->id() . '/edit');
Chris@0:     $this->drupalPostAjaxForm(NULL, [], ['field_test_multi_add_more' => t('Add another item')]);
Chris@0:     $this->drupalPostAjaxForm(NULL, [], ['field_test_multi_add_more' => t('Add another item')]);
Chris@0:     $edit = [
Chris@0:       'field_test_multi[1][value]' => $example_text_2,
Chris@0:       'field_test_multi[2][value]' => $example_text_3,
Chris@0:     ];
Chris@0:     $this->drupalPostForm(NULL, $edit, t('Preview'));
Chris@0:     $this->clickLink(t('Back to content editing'));
Chris@0:     $this->drupalPostForm(NULL, $edit, t('Preview'));
Chris@0:     $this->clickLink(t('Back to content editing'));
Chris@0:     $this->assertFieldByName('field_test_multi[0][value]', $example_text_1);
Chris@0:     $this->assertFieldByName('field_test_multi[1][value]', $example_text_2);
Chris@0:     $this->assertFieldByName('field_test_multi[2][value]', $example_text_3);
Chris@0: 
Chris@0:     // Now save the node and make sure all values got saved.
Chris@0:     $this->drupalPostForm(NULL, [], t('Save'));
Chris@0:     $this->assertText($example_text_1);
Chris@0:     $this->assertText($example_text_2);
Chris@0:     $this->assertText($example_text_3);
Chris@0: 
Chris@0:     // Edit again, change the menu_ui settings and click on preview.
Chris@0:     $this->drupalGet('node/' . $node->id() . '/edit');
Chris@0:     $edit = [
Chris@0:       'menu[enabled]' => TRUE,
Chris@0:       'menu[title]' => 'Changed title',
Chris@0:     ];
Chris@0:     $this->drupalPostForm(NULL, $edit, t('Preview'));
Chris@0:     $this->clickLink(t('Back to content editing'));
Chris@0:     $this->assertFieldChecked('edit-menu-enabled', 'Menu option is still checked');
Chris@0:     $this->assertFieldByName('menu[title]', 'Changed title', 'Menu link title is correct after preview');
Chris@0: 
Chris@0:     // Save, change the title while saving and make sure that it is correctly
Chris@0:     // saved.
Chris@0:     $edit = [
Chris@0:       'menu[enabled]' => TRUE,
Chris@0:       'menu[title]' => 'Second title change',
Chris@0:     ];
Chris@0:     $this->drupalPostForm(NULL, $edit, t('Save'));
Chris@0:     $this->drupalGet('node/' . $node->id() . '/edit');
Chris@0:     $this->assertFieldByName('menu[title]', 'Second title change', 'Menu link title is correct after saving');
Chris@0: 
Chris@0:   }
Chris@0: 
Chris@0:   /**
Chris@0:    * Checks the node preview functionality, when using revisions.
Chris@0:    */
Chris@0:   public function testPagePreviewWithRevisions() {
Chris@0:     $title_key = 'title[0][value]';
Chris@0:     $body_key = 'body[0][value]';
Chris@0:     $term_key = $this->fieldName . '[target_id]';
Chris@0:     // Force revision on "Basic page" content.
Chris@0:     $node_type = NodeType::load('page');
Chris@0:     $node_type->setNewRevision(TRUE);
Chris@0:     $node_type->save();
Chris@0: 
Chris@0:     // Fill in node creation form and preview node.
Chris@0:     $edit = [];
Chris@0:     $edit[$title_key] = $this->randomMachineName(8);
Chris@0:     $edit[$body_key] = $this->randomMachineName(16);
Chris@0:     $edit[$term_key] = $this->term->id();
Chris@0:     $edit['revision_log[0][value]'] = $this->randomString(32);
Chris@0:     $this->drupalPostForm('node/add/page', $edit, t('Preview'));
Chris@0: 
Chris@0:     // Check that the preview is displaying the title, body and term.
Chris@0:     $this->assertTitle(t('@title | Drupal', ['@title' => $edit[$title_key]]), 'Basic page title is preview.');
Chris@0:     $this->assertText($edit[$title_key], 'Title displayed.');
Chris@0:     $this->assertText($edit[$body_key], 'Body displayed.');
Chris@0:     $this->assertText($edit[$term_key], 'Term displayed.');
Chris@0: 
Chris@0:     // Check that the title and body fields are displayed with the correct
Chris@0:     // values after going back to the content edit page.
Chris@0:     $this->clickLink(t('Back to content editing'));    $this->assertFieldByName($title_key, $edit[$title_key], 'Title field displayed.');
Chris@0:     $this->assertFieldByName($body_key, $edit[$body_key], 'Body field displayed.');
Chris@0:     $this->assertFieldByName($term_key, $edit[$term_key], 'Term field displayed.');
Chris@0: 
Chris@0:     // Check that the revision log field has the correct value.
Chris@0:     $this->assertFieldByName('revision_log[0][value]', $edit['revision_log[0][value]'], 'Revision log field displayed.');
Chris@0: 
Chris@0:     // Save the node after coming back from the preview page so we can create a
Chris@0:     // pending revision for it.
Chris@0:     $this->drupalPostForm(NULL, [], t('Save'));
Chris@0:     $node = $this->drupalGetNodeByTitle($edit[$title_key]);
Chris@0: 
Chris@0:     // Check that previewing a pending revision of a node works. This can not be
Chris@0:     // accomplished through the UI so we have to use API calls.
Chris@0:     // @todo Change this test to use the UI when we will be able to create
Chris@0:     // pending revisions in core.
Chris@0:     // @see https://www.drupal.org/node/2725533
Chris@0:     $node->setNewRevision(TRUE);
Chris@0:     $node->isDefaultRevision(FALSE);
Chris@0: 
Chris@0:     /** @var \Drupal\Core\Controller\ControllerResolverInterface $controller_resolver */
Chris@0:     $controller_resolver = \Drupal::service('controller_resolver');
Chris@0:     $node_preview_controller = $controller_resolver->getControllerFromDefinition('\Drupal\node\Controller\NodePreviewController::view');
Chris@0:     $node_preview_controller($node, 'full');
Chris@0:   }
Chris@0: 
Chris@0:   /**
Chris@0:    * Checks the node preview accessible for simultaneous node editing.
Chris@0:    */
Chris@0:   public function testSimultaneousPreview() {
Chris@0:     $title_key = 'title[0][value]';
Chris@0:     $node = $this->drupalCreateNode([]);
Chris@0: 
Chris@0:     $edit = [$title_key => 'New page title'];
Chris@0:     $this->drupalPostForm('node/' . $node->id() . '/edit', $edit, t('Preview'));
Chris@0:     $this->assertText($edit[$title_key]);
Chris@0: 
Chris@0:     $user2 = $this->drupalCreateUser(['edit any page content']);
Chris@0:     $this->drupalLogin($user2);
Chris@0:     $this->drupalGet('node/' . $node->id() . '/edit');
Chris@0:     $this->assertFieldByName($title_key, $node->label(), 'No title leaked from previous user.');
Chris@0: 
Chris@0:     $edit2 = [$title_key => 'Another page title'];
Chris@0:     $this->drupalPostForm('node/' . $node->id() . '/edit', $edit2, t('Preview'));
Chris@0:     $this->assertUrl(\Drupal::url('entity.node.preview', ['node_preview' => $node->uuid(), 'view_mode_id' => 'full'], ['absolute' => TRUE]));
Chris@0:     $this->assertText($edit2[$title_key]);
Chris@0:   }
Chris@0: 
Chris@0: }