Assert the links of the primary navigation are (or are not) open to the visitor: visible on the screen, not folded behind the toggle.
Examples
Then the primary navigation should be open
Then the primary navigation should not be open
And the primary navigation should be open
Then the primary navigation links should be open
And the primary navigation links should not be open
Pattern
Then(/^the primary navigation(?: links)? should( not)* be open$/, …)
Part of @webship-js/backdrop-cms-steps (github.com/webship/backdrop-cms-steps), a step pack for Webship-js 2.0.x.