Issue #3376369 by Spokje, quietone, smustgrave, catch: Remove use of book in...

    $this->assertSession()->statusMessageContains('Saved User comment configuration.', 'status');

  }

  /**

   * Tests that comment module works when installed after a content module.

   */

  public function testCommentInstallAfterContentModule() {

    // Create a user to do module administration.

    $this->adminUser = $this->drupalCreateUser([

      'access administration pages',

      'administer modules',

    ]);

    $this->drupalLogin($this->adminUser);

    // Drop default comment field added in CommentTestBase::setUp().

    FieldStorageConfig::loadByName('node', 'comment')->delete();

    if ($field_storage = FieldStorageConfig::loadByName('node', 'comment_forum')) {

      $field_storage->delete();

    }

    // Purge field data now to allow comment module to be uninstalled once the

    // field has been deleted.

    field_purge_batch(10);

    // Uninstall the comment module.

    $edit = [];

    $edit['uninstall[comment]'] = TRUE;

    $this->drupalGet('admin/modules/uninstall');

    $this->submitForm($edit, 'Uninstall');

    $this->submitForm([], 'Uninstall');

    $this->rebuildContainer();

    $this->assertFalse($this->container->get('module_handler')->moduleExists('comment'), 'Comment module uninstalled.');

    // Install core content type module (book).

    $edit = [];

    $edit['modules[book][enable]'] = 'book';

    $this->drupalGet('admin/modules');

    $this->submitForm($edit, 'Install');

    // Now install the comment module.

    $edit = [];

    $edit['modules[comment][enable]'] = 'comment';

    $this->drupalGet('admin/modules');

    $this->submitForm($edit, 'Install');

    $this->rebuildContainer();

    $this->assertTrue($this->container->get('module_handler')->moduleExists('comment'), 'Comment module enabled.');

    // Create nodes of each type.

    $this->addDefaultCommentField('node', 'book');

    $book_node = $this->drupalCreateNode(['type' => 'book']);

    $this->drupalLogout();

    // Try to post a comment on each node. A failure will be triggered if the

    // comment body is missing on one of these forms, due to postComment()

    // asserting that the body is actually posted correctly.

    $this->webUser = $this->drupalCreateUser([

      'access content',

      'access comments',

      'post comments',

      'skip comment approval',

    ]);

    $this->drupalLogin($this->webUser);

    $this->postComment($book_node, $this->randomMachineName(), $this->randomMachineName());

  }

}