Assert that the actions menu of the edit form (or of the slide-out editor) offers, or does not offer, an item: what the account may do with the element decides what the menu lists.
Examples
Then the actions menu of the edit form should offer "Delete entry"
Then the actions menu of the edit form should not offer "Section settings"
Then the actions menu of the edit form should offer "Copy entry"
And the actions menu of the edit form should not offer "Entry type settings"
Then the actions menu of the edit form should offer "Delete draft"
Pattern
Then(/^the actions menu of the edit form should( not)* offer "([^"]*)"$/, …)
Part of @webship-js/craft-cms-steps (github.com/webship/craft-cms-steps), a step pack for Webship-js 2.0.x.