rspec - How do i use named routes in an Rails engine's specs? -

i have rails engine engine.rb defined:

module keywords   class engine < ::rails::engine     isolate_namespace keywords end

i have routes defined:

keywords::engine.routes.draw   resources :keyword_groups,  only: [:new]  end

now, works great inside dummy app. can use variable keywords.new_keyword_group_path url path.

however, when try same in rspec tests using capybara, fails! tried add following line spec_helper.rb suggested:

config.include keywords::engine.routes.url_helpers

but, when try use following line in tests:

visit keywords.new_keyword_group_path

i following error:

nameerror: undefined local variable or method `keywords' #<rspec::core::examplegroup::nested_1:0x00000108833390>

if instead try leave off "keywords" prefix, , do:

visit new_keyword_group_path

i error:

actioncontroller::routingerror: no route matches [get] "/keyword_groups/new"

which makes sense path should "/keywords/keyword_groups/new".

how can included url helpers use correct namespace prefix?

i found solution based on spree gem. creating helper method prefix grab path engines routes so:

def keywords   keywords::engine.routes.url_helpers end

then keywords.new_keyword_path works charm

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