assertContextualLinksClickable example

// Ensure the links and forms are disabled using the defaults before the     // layout is saved.     $this->assertLinksFormIframeNotInteractive();

    $page->pressButton('Save layout');
    $this->clickLink('Manage layout');

    // Ensure the links and forms are disabled using the defaults.     $this->assertLinksFormIframeNotInteractive();

    // Ensure contextual links were not disabled.     $this->assertContextualLinksClickable();

    $this->drupalGet("{$field_ui_prefix}/display/default");
    $this->submitForm(['layout[allow_custom]' => TRUE], 'Save');
    $this->drupalGet('node/1/layout');

    // Ensure the links and forms are also disabled in using the override.     $this->assertLinksFormIframeNotInteractive();

    // Ensure contextual links were not disabled.     $this->assertContextualLinksClickable();
  }