When I open the "Promotion options" vertical tab

Switch to a vertical tab of a form by its title ("Publishing options", "Display settings", "Menu settings" on the content type form). When the theme shows that section as collapsible details instead, as the node form of Drupal 12 does, the details element is opened: the step does what the sentence means on either rendering.

Examples

When I open the "Promotion options" vertical tab
And I open the "Authoring information" vertical tab
When we open the "Menu settings" vertical tab
And I open the "URL alias" vertical tab
When I open the "Revision information" vertical tab

Pattern

When(/^(I |we )*open the "([^"]*)" vertical tab$/, …)

Part of @webship-js/drupal-cms-steps (github.com/webship/drupal-cms-steps), a step pack for Webship-js 2.0.x.