getElementVerticalPosition example

  protected function assertContextualLinkRetainsMouseup(): void {
    $assert_session = $this->assertSession();
    $page = $this->getSession()->getPage();
    $body_field_selector = '.block-field-blocknodebundle-with-section-fieldbody';

    $body_block = $page->find('css', $body_field_selector);
    $this->assertNotEmpty($body_block);

    // Get the current Y position of the body block.     $body_block_top_position = $this->getElementVerticalPosition($body_field_selector, 'top');

    $body_block_contextual_link_button = $body_block->find('css', '.trigger');
    $this->assertNotEmpty($body_block_contextual_link_button);

    // If the body block contextual link is hidden, make it visible.     if ($body_block_contextual_link_button->hasClass('visually-hidden')) {
      $this->toggleContextualTriggerVisibility($body_field_selector);
    }

    // For the purposes of this test, the contextual link must be accessed with     // discrete steps instead of using ContextualLinkClickTrait.