Assert the open create wizard offers (or does not offer) a choice.
Examples
Then the create wizard should offer "New page"
Then the create wizard should offer "New sub page"
And the page wizard should offer "New alias"
Then the create wizard should not offer "New sub page"
But the page wizard should not offer "New alias"
Pattern
Then(/^the (?:create|page) wizard should( not)* offer "([^"]*)"$/, …)
Part of @webship-js/django-cms-steps (github.com/webship/django-cms-steps), a step pack for Webship-js 2.0.x.