How can I assert that no route matches in a Rails integration test?

Question

I have a Rails 3 integration test which tests my routes. It contains tests such as:

assert_routing(
    \"/#{@category.url.path}/#{@foo.url.path}\",
    { :c         


        

Answer 1

There is a similar way for checking this in Rails 4 by asserting on the UrlGenerationError exception:

def test_no_routes_match_when_neither_foo_nor_bar_exist
  assert_raises(ActionController::UrlGenerationError) do
    get '/category/this-is-neither-a-foo-nor-a-bar'
  end
end