Testing rendering of a given layout with RSpec & Rails

Question

Is it possible to test the use of a given layout using RSpec with Rails, for example I\'d like a matcher that does the following:

response.should use_layout(         


        

Answer 1

Shoulda Matchers provides a matcher for this scenario. (Documentation) This seems to work:

       expect(response).to render_with_layout('my_layout')

it produces appropriate failure messages like:

Expected to render with the "calendar_layout" layout, but rendered with "application", "application"

Tested with rails 4.2, rspec 3.3 and shoulda-matchers 2.8.0

Edit: shoulda-matchers provides this method. Shoulda::Matchers::ActionController::RenderWithLayoutMatcher