class NodeEditFormTest

class NodeEditFormTest extends NodeTestBase {
    
    /**
     * {@inheritdoc}
     */
    protected $defaultTheme = 'stark';
    
    /**
     * A normal logged in user.
     *
     * @var \Drupal\user\UserInterface
     */
    protected $webUser;
    
    /**
     * A user with permission to bypass content access checks.
     *
     * @var \Drupal\user\UserInterface
     */
    protected $adminUser;
    
    /**
     * The node storage.
     *
     * @var \Drupal\node\NodeStorageInterface
     */
    protected $nodeStorage;
    
    /**
     * Modules to enable.
     *
     * @var string[]
     */
    public static $modules = [
        'block',
        'node',
        'datetime',
    ];
    protected function setUp() {
        parent::setUp();
        $this->webUser = $this->drupalCreateUser([
            'edit own page content',
            'create page content',
        ]);
        $this->adminUser = $this->drupalCreateUser([
            'bypass node access',
            'administer nodes',
        ]);
        $this->drupalPlaceBlock('local_tasks_block');
        $this->nodeStorage = $this->container
            ->get('entity_type.manager')
            ->getStorage('node');
    }
    
    /**
     * Checks node edit functionality.
     */
    public function testNodeEdit() {
        $this->drupalLogin($this->webUser);
        $title_key = 'title[0][value]';
        $body_key = 'body[0][value]';
        // Create node to edit.
        $edit = [];
        $edit[$title_key] = $this->randomMachineName(8);
        $edit[$body_key] = $this->randomMachineName(16);
        $this->drupalPostForm('node/add/page', $edit, t('Save'));
        // Check that the node exists in the database.
        $node = $this->drupalGetNodeByTitle($edit[$title_key]);
        $this->assertNotEmpty($node, 'Node found in database.');
        // Check that "edit" link points to correct page.
        $this->clickLink(t('Edit'));
        $this->assertUrl($node->toUrl('edit-form', [
            'absolute' => TRUE,
        ])
            ->toString());
        // Check that the title and body fields are displayed with the correct values.
        // @todo Ideally assertLink would support HTML, but it doesn't.
        $this->assertRaw('Edit<span class="visually-hidden">(active tab)</span>', 'Edit tab found and marked active.');
        $this->assertFieldByName($title_key, $edit[$title_key], 'Title field displayed.');
        $this->assertFieldByName($body_key, $edit[$body_key], 'Body field displayed.');
        // Edit the content of the node.
        $edit = [];
        $edit[$title_key] = $this->randomMachineName(8);
        $edit[$body_key] = $this->randomMachineName(16);
        // Stay on the current page, without reloading.
        $this->drupalPostForm(NULL, $edit, t('Save'));
        // Check that the title and body fields are displayed with the updated values.
        $this->assertText($edit[$title_key], 'Title displayed.');
        $this->assertText($edit[$body_key], 'Body displayed.');
        // Log in as a second administrator user.
        $second_web_user = $this->drupalCreateUser([
            'administer nodes',
            'edit any page content',
        ]);
        $this->drupalLogin($second_web_user);
        // Edit the same node, creating a new revision.
        $this->drupalGet("node/" . $node->id() . "/edit");
        $edit = [];
        $edit['title[0][value]'] = $this->randomMachineName(8);
        $edit[$body_key] = $this->randomMachineName(16);
        $edit['revision'] = TRUE;
        $this->drupalPostForm(NULL, $edit, t('Save'));
        // Ensure that the node revision has been created.
        $revised_node = $this->drupalGetNodeByTitle($edit['title[0][value]'], TRUE);
        $this->assertNotIdentical($node->getRevisionId(), $revised_node->getRevisionId(), 'A new revision has been created.');
        // Ensure that the node author is preserved when it was not changed in the
        // edit form.
        $this->assertIdentical($node->getOwnerId(), $revised_node->getOwnerId(), 'The node author has been preserved.');
        // Ensure that the revision authors are different since the revisions were
        // made by different users.
        $first_node_version = node_revision_load($node->getRevisionId());
        $second_node_version = node_revision_load($revised_node->getRevisionId());
        $this->assertNotIdentical($first_node_version->getRevisionUser()
            ->id(), $second_node_version->getRevisionUser()
            ->id(), 'Each revision has a distinct user.');
        // Check if the node revision checkbox is rendered on node edit form.
        $this->drupalGet('node/' . $node->id() . '/edit');
        $this->assertFieldById('edit-revision', NULL, 'The revision field is present.');
        // Check that details form element opens when there are errors on child
        // elements.
        $this->drupalGet('node/' . $node->id() . '/edit');
        $edit = [];
        // This invalid date will trigger an error.
        $edit['created[0][value][date]'] = $this->randomMachineName(8);
        // Get the current amount of open details elements.
        $open_details_elements = count($this->cssSelect('details[open="open"]'));
        $this->drupalPostForm(NULL, $edit, t('Save'));
        // The node author details must be open.
        $this->assertRaw('<details class="node-form-author js-form-wrapper form-wrapper" data-drupal-selector="edit-author" id="edit-author" open="open">');
        // Only one extra details element should now be open.
        $open_details_elements++;
        $this->assertEqual(count($this->cssSelect('details[open="open"]')), $open_details_elements, 'Exactly one extra open &lt;details&gt; element found.');
        // Edit the same node, save it and verify it's unpublished after unchecking
        // the 'Published' boolean_checkbox and clicking 'Save'.
        $this->drupalGet("node/" . $node->id() . "/edit");
        $edit = [
            'status[value]' => FALSE,
        ];
        $this->drupalPostForm(NULL, $edit, t('Save'));
        $this->nodeStorage
            ->resetCache([
            $node->id(),
        ]);
        $node = $this->nodeStorage
            ->load($node->id());
        $this->assertFalse($node->isPublished(), 'Node is unpublished');
    }
    
    /**
     * Tests changing a node's "authored by" field.
     */
    public function testNodeEditAuthoredBy() {
        $this->drupalLogin($this->adminUser);
        // Create node to edit.
        $body_key = 'body[0][value]';
        $edit = [];
        $edit['title[0][value]'] = $this->randomMachineName(8);
        $edit[$body_key] = $this->randomMachineName(16);
        $this->drupalPostForm('node/add/page', $edit, t('Save'));
        // Check that the node was authored by the currently logged in user.
        $node = $this->drupalGetNodeByTitle($edit['title[0][value]']);
        $this->assertIdentical($node->getOwnerId(), $this->adminUser
            ->id(), 'Node authored by admin user.');
        $this->checkVariousAuthoredByValues($node, 'uid[0][target_id]');
        // Check that normal users cannot change the authored by information.
        $this->drupalLogin($this->webUser);
        $this->drupalGet('node/' . $node->id() . '/edit');
        $this->assertNoFieldByName('uid[0][target_id]');
        // Now test with the Autocomplete (Tags) field widget.
        
        /** @var \Drupal\Core\Entity\Display\EntityFormDisplayInterface $form_display */
        $form_display = \Drupal::entityTypeManager()->getStorage('entity_form_display')
            ->load('node.page.default');
        $widget = $form_display->getComponent('uid');
        $widget['type'] = 'entity_reference_autocomplete_tags';
        $widget['settings'] = [
            'match_operator' => 'CONTAINS',
            'size' => 60,
            'placeholder' => '',
        ];
        $form_display->setComponent('uid', $widget);
        $form_display->save();
        $this->drupalLogin($this->adminUser);
        // Save the node without making any changes.
        $this->drupalPostForm('node/' . $node->id() . '/edit', [], t('Save'));
        $this->nodeStorage
            ->resetCache([
            $node->id(),
        ]);
        $node = $this->nodeStorage
            ->load($node->id());
        $this->assertIdentical($this->webUser
            ->id(), $node->getOwner()
            ->id());
        $this->checkVariousAuthoredByValues($node, 'uid[target_id]');
        // Hide the 'authored by' field from the form.
        $form_display->removeComponent('uid')
            ->save();
        // Check that saving the node without making any changes keeps the proper
        // author ID.
        $this->drupalPostForm('node/' . $node->id() . '/edit', [], t('Save'));
        $this->nodeStorage
            ->resetCache([
            $node->id(),
        ]);
        $node = $this->nodeStorage
            ->load($node->id());
        $this->assertIdentical($this->webUser
            ->id(), $node->getOwner()
            ->id());
    }
    
    /**
     * Tests the node meta information.
     */
    public function testNodeMetaInformation() {
        // Check that regular users (i.e. without the 'administer nodes' permission)
        // can not see the meta information.
        $this->drupalLogin($this->webUser);
        $this->drupalGet('node/add/page');
        $this->assertNoText('Not saved yet');
        // Create node to edit.
        $edit['title[0][value]'] = $this->randomMachineName(8);
        $edit['body[0][value]'] = $this->randomMachineName(16);
        $this->drupalPostForm(NULL, $edit, t('Save'));
        $node = $this->drupalGetNodeByTitle($edit['title[0][value]']);
        $this->drupalGet("node/" . $node->id() . "/edit");
        $this->assertNoText('Published');
        $this->assertNoText($this->container
            ->get('date.formatter')
            ->format($node->getChangedTime(), 'short'));
        // Check that users with the 'administer nodes' permission can see the meta
        // information.
        $this->drupalLogin($this->adminUser);
        $this->drupalGet('node/add/page');
        $this->assertText('Not saved yet');
        // Create node to edit.
        $edit['title[0][value]'] = $this->randomMachineName(8);
        $edit['body[0][value]'] = $this->randomMachineName(16);
        $this->drupalPostForm(NULL, $edit, t('Save'));
        $node = $this->drupalGetNodeByTitle($edit['title[0][value]']);
        $this->drupalGet("node/" . $node->id() . "/edit");
        $this->assertText('Published');
        $this->assertText($this->container
            ->get('date.formatter')
            ->format($node->getChangedTime(), 'short'));
    }
    
    /**
     * Checks that the "authored by" works correctly with various values.
     *
     * @param \Drupal\node\NodeInterface $node
     *   A node object.
     * @param string $form_element_name
     *   The name of the form element to populate.
     */
    protected function checkVariousAuthoredByValues(NodeInterface $node, $form_element_name) {
        // Try to change the 'authored by' field to an invalid user name.
        $edit = [
            $form_element_name => 'invalid-name',
        ];
        $this->drupalPostForm('node/' . $node->id() . '/edit', $edit, t('Save'));
        $this->assertRaw(t('There are no entities matching "%name".', [
            '%name' => 'invalid-name',
        ]));
        // Change the authored by field to an empty string, which should assign
        // authorship to the anonymous user (uid 0).
        $edit[$form_element_name] = '';
        $this->drupalPostForm('node/' . $node->id() . '/edit', $edit, t('Save'));
        $this->nodeStorage
            ->resetCache([
            $node->id(),
        ]);
        $node = $this->nodeStorage
            ->load($node->id());
        $uid = $node->getOwnerId();
        // Most SQL database drivers stringify fetches but entities are not
        // necessarily stored in a SQL database. At the same time, NULL/FALSE/""
        // won't do.
        $this->assertTrue($uid === 0 || $uid === '0', 'Node authored by anonymous user.');
        // Go back to the edit form and check that the correct value is displayed
        // in the author widget.
        $this->drupalGet('node/' . $node->id() . '/edit');
        $anonymous_user = User::getAnonymousUser();
        $expected = $anonymous_user->label() . ' (' . $anonymous_user->id() . ')';
        $this->assertFieldByName($form_element_name, $expected, 'Authored by field displays the correct value for the anonymous user.');
        // Change the authored by field to another user's name (that is not
        // logged in).
        $edit[$form_element_name] = $this->webUser
            ->getAccountName();
        $this->drupalPostForm(NULL, $edit, t('Save'));
        $this->nodeStorage
            ->resetCache([
            $node->id(),
        ]);
        $node = $this->nodeStorage
            ->load($node->id());
        $this->assertIdentical($node->getOwnerId(), $this->webUser
            ->id(), 'Node authored by normal user.');
    }

}