Then I should be on the administrator "Articles" page

Assert the page is (or is not) the named administrator page, by the component and view in its address (option=com_content&view=articles); the dashboard by the com_cpanel body class.

Examples

Then I should be on the administrator "Articles" page
Then I should be on the administrator "Dashboard" page
Then we should be on the administrator "Users" page
And I should not be on the administrator "Articles" page
Then should be on the administrator "Global Configuration" page

Pattern

Then(/^(I |we )*should( not)* be on the admin(?:istrator)* "([^"]*)?" page$/, …)

Part of @webship-js/joomla-steps (github.com/webship/joomla-steps), a step pack for Webship-js 2.0.x.