RoutingError on a mounted engine in a controller spec - ruby-on-rails

Question

I created a mountable engine with this routes :
Rails.application.routes.draw do
scope module: :minimalist_cms do
root to: "pages#show"
get ':id', to: "pages#show"
resources :pages
resources :page_parts
end
end
And I have this test :
require 'spec_helper'
module MinimalistCms
describe PagesController, type: :controller do
let(:page) { stub_model(Page) }
describe :show do
context "when there is a page" do
it 'should find by slug' do
Page.should_receive(:find_by_slug).and_return(page)
get :show, id: 'test'
end
end
end
end
end
And when I type rake routes I have this result :
root / minimalist_cms/pages#show
GET /:id(.:format) minimalist_cms/pages#show
pages GET /pages(.:format) minimalist_cms/pages#index
POST /pages(.:format) minimalist_cms/pages#create
new_page GET /pages/new(.:format) minimalist_cms/pages#new
edit_page GET /pages/:id/edit(.:format) minimalist_cms/pages#edit
page GET /pages/:id(.:format) minimalist_cms/pages#show
PUT /pages/:id(.:format) minimalist_cms/pages#update
DELETE /pages/:id(.:format) minimalist_cms/pages#destroy
page_parts GET /page_parts(.:format) minimalist_cms/page_parts#index
POST /page_parts(.:format) minimalist_cms/page_parts#create
new_page_part GET /page_parts/new(.:format) minimalist_cms/page_parts#new
edit_page_part GET /page_parts/:id/edit(.:format) minimalist_cms/page_parts#edit
page_part GET /page_parts/:id(.:format) minimalist_cms/page_parts#show
PUT /page_parts/:id(.:format) minimalist_cms/page_parts#update
DELETE /page_parts/:id(.:format) minimalist_cms/page_parts#destroy
It works but if I change for this, in my engine :
MinimalistCms::Engine.routes.draw do
scope module: :minimalist_cms do
root to: "pages#show"
get ':id', to: "pages#show"
resources :pages
resources :page_parts
end
end
And in my application :
mounted in my dummy application like this :
Dummy::Application.routes.draw do
mount MinimalistCms::Engine, at: '/'
end
I have this error :
Failure/Error: get :show, id: 'test'
ActionController::RoutingError:
No route matches {:id=>"test", :controller=>"minimalist_cms/pages", :action=>"show"}
And the rake routes result seem to be similar :
minimalist / MinimalistCms::Engine
root / minimalist_cms/pages#show
GET /:id(.:format) minimalist_cms/pages#show
pages GET /pages(.:format) minimalist_cms/pages#index
POST /pages(.:format) minimalist_cms/pages#create
new_page GET /pages/new(.:format) minimalist_cms/pages#new
edit_page GET /pages/:id/edit(.:format) minimalist_cms/pages#edit
page GET /pages/:id(.:format) minimalist_cms/pages#show
PUT /pages/:id(.:format) minimalist_cms/pages#update
DELETE /pages/:id(.:format) minimalist_cms/pages#destroy
page_parts GET /page_parts(.:format) minimalist_cms/page_parts#index
POST /page_parts(.:format) minimalist_cms/page_parts#create
new_page_part GET /page_parts/new(.:format) minimalist_cms/page_parts#new
edit_page_part GET /page_parts/:id/edit(.:format) minimalist_cms/page_parts#edit
page_part GET /page_parts/:id(.:format) minimalist_cms/page_parts#show
PUT /page_parts/:id(.:format) minimalist_cms/page_parts#update
DELETE /page_parts/:id(.:format) minimalist_cms/page_parts#destroy
The behaviour of the application is not changed, it works, but the test fail.
Do you have a solution?

Answer 1

Maybe instead of using a scope, try to use write the routes the normal way (without scope).
Now in the file where you declare the engine which inherits from Rails::Engine add isolated_namespace.
Module MinimalistCms
Class Engine < Rails::Engine
isolate_namespace MinimalistCms
end
end
Try running your test now.