doTestRenderedOutput example

// Create a power user node.     Node::create(['title' => 'z' . $this->randomMachineName(), 'uid' => $this->powerUser->id(), 'type' => 'test'])->save();
  }

  /** * Tests complex field rewriting and uncacheable field handlers. */
  public function testAdvancedCaching() {
    // Test that row field output is actually cached and with the proper cache     // contexts.     $this->doTestRenderedOutput($this->editorUser);
    $this->doTestRenderedOutput($this->editorUser, TRUE);
    $this->doTestRenderedOutput($this->powerUser);
    $this->doTestRenderedOutput($this->powerUser, TRUE);
    $this->doTestRenderedOutput($this->regularUser);
    $this->doTestRenderedOutput($this->regularUser, TRUE);

    // Alter the result set order and check that counter is still working     // correctly.     $this->doTestRenderedOutput($this->editorUser);
    /** @var \Drupal\node\NodeInterface $node */
    $node = Node::load(6);