Assert the breadcrumb contains (or does not contain) a page, by its menu title: a link for an ancestor, plain text for the current page.
Examples
Then the breadcrumb should contain "About"
Then the breadcrumb should not contain "Contact"
And the breadcrumb should contain "Team"
Then the breadcrumbs should contain "Home"
But the breadcrumb should not contain "Draft notes"
Pattern
Then(/^the breadcrumbs? should( not)* contain "([^"]*)"$/, …)
Part of @webship-js/django-cms-steps (github.com/webship/django-cms-steps), a step pack for Webship-js 2.0.x.