Assert the administrator sidebar menu (#sidebarmenu, the Atum menu) is (or is not) showing.
Examples
Then I should see the administrator menu
Then I should not see the administrator menu
Then we should see the admin menu
And I should see the administrator menu
Then should not see the admin menu
Pattern
Then(/^(I |we )*should( not)* see the admin(?:istrator)* menu$/, …)
Part of @webship-js/joomla-steps (github.com/webship/joomla-steps), a step pack for Webship-js 2.0.x.