Question on Ember QUnit

What type of selectors works in Ember QUnit ? Do they support just the CSS selectors (or jQuery selectors) OR do they even have support for XPath selectors ?

Also can I write multiple scenarios in a single acceptance test module/file ? So I want to have an initial setup for the test (say based on today’s date)

I want to test 2 scenarios (acceptance test workflows)

1. if some date column on screen is today's date &
2. date column is a past date

Can I handle this in a single module/file? If yes, how ?