ruby on rails - How to test for flash using cucumber -

i writing cucumber tests ror app , need test flash appear:

<p class='flashnotice flash'>message sent.</p>

however, can't find solution works. i've tried:

  page.should have_selector('p', :class => 'flashnotice flash')     page.should have_content fartknocker   end

but returns error on :class , says can't use that. can show me right way test flash?

you can use style instead

page.should have_css('.flashnotice', text: "message sent")

Brande