Assert a text is (or is not) shown inside the CMS modal or the CMS sideframe. The step reads the iframe the overlay loads.
Examples
Then I should see "Provide a title for the new page." in the CMS modal
Then I should see "Select page content to change" in the CMS sideframe
And we should not see "Error" in the django CMS modal
Then should see "editor" in the CMS sideframe
But I should not see "Users" in the django CMS sideframe
Pattern
Then(/^(I |we )*should( not)* see "([^"]*)" in the (?:django )?CMS (modal|sideframe)$/, …)
Part of @webship-js/django-cms-steps (github.com/webship/django-cms-steps), a step pack for Webship-js 2.0.x.