Routing error in the mountable rails plugin application.

[joowh85]

In command line

rails plugin new ENGINE_NAME --dummy-path=spec/dummy --skip-test-unit --mountable

gemspec file

s.add_development_dependency 'rspec-rails'
s.add_development_dependency 'factory_girl_rails'

rails_helper.rb

require File.expand_path('../dummy/config/environment', __FILE__)

engine.rb

 config.generators do |g|
      g.test_framework      :rspec,        :fixture => false
      g.fixture_replacement :factory_girl, :dir => 'spec/factories'
end

Command line

rails g scaffold NAME name:string

And run 'rspec' in command

  1) Backend::ShopsController GET new assigns a new shop as @shop
     Failure/Error: get :new, {}, valid_session
     ActionController::UrlGenerationError:
       No route matches {:action=>"new", :controller=>"backend/shops"}
     # /home/sangwoojoo/.rvm/gems/ruby-2.2.0/gems/actionpack-4.2.0/lib/action_dispatch/journey/formatter.rb:46:in `generate'
     # /home/sangwoojoo/.rvm/gems/ruby-2.2.0/gems/actionpack-4.2.0/lib/action_dispatch/routing/route_set.rb:710:in `generate'
     # /home/sangwoojoo/.rvm/gems/ruby-2.2.0/gems/actionpack-4.2.0/lib/action_dispatch/routing/route_set.rb:741:in `generate'
     # /home/sangwoojoo/.rvm/gems/ruby-2.2.0/gems/actionpack-4.2.0/lib/action_dispatch/routing/route_set.rb:736:in `generate_extras'
     # /home/sangwoojoo/.rvm/gems/ruby-2.2.0/gems/actionpack-4.2.0/lib/action_dispatch/routing/route_set.rb:731:in `extra_keys'
     # /home/sangwoojoo/.rvm/gems/ruby-2.2.0/gems/actionpack-4.2.0/lib/action_controller/test_case.rb:205:in `assign_parameters'
     # /home/sangwoojoo/.rvm/gems/ruby-2.2.0/gems/actionpack-4.2.0/lib/action_controller/test_case.rb:616:in `process'
     # /home/sangwoojoo/.rvm/gems/ruby-2.2.0/gems/actionpack-4.2.0/lib/action_controller/test_case.rb:65:in `process'
     # /home/sangwoojoo/.rvm/gems/ruby-2.2.0/gems/actionpack-4.2.0/lib/action_controller/test_case.rb:505:in `get'
     # ./spec/controllers/backend/shops_controller_spec.rb:58:in `block (3 levels) in <module:Backend>'

  2) Backend::ShopsController routing routes to #index
     Failure/Error: expect(:get => "/shops").to route_to("shops#index")
       No route matches "/shops"
     # ./spec/routing/backend/shops_routing_spec.rb:8:in `block (3 levels) in <module:Backend>'

  3) Backend::ShopsController routing routes to #new
     Failure/Error: expect(:get => "/shops/new").to route_to("shops#new")
       No route matches "/shops/new"
     # ./spec/routing/backend/shops_routing_spec.rb:12:in `block (3 levels) in <module:Backend>'

  4) Backend::ShopsController routing routes to #show
     Failure/Error: expect(:get => "/shops/1").to route_to("shops#show", :id => "1")
       No route matches "/shops/1"
     # ./spec/routing/backend/shops_routing_spec.rb:16:in `block (3 levels) in <module:Backend>'

  5) Backend::ShopsController routing routes to #edit
     Failure/Error: expect(:get => "/shops/1/edit").to route_to("shops#edit", :id => "1")
       No route matches "/shops/1/edit"
     # ./spec/routing/backend/shops_routing_spec.rb:20:in `block (3 levels) in <module:Backend>'

  6) Backend::ShopsController routing routes to #create
     Failure/Error: expect(:post => "/shops").to route_to("shops#create")
       No route matches "/shops"
     # ./spec/routing/backend/shops_routing_spec.rb:24:in `block (3 levels) in <module:Backend>'

  7) Backend::ShopsController routing routes to #update
     Failure/Error: expect(:put => "/shops/1").to route_to("shops#update", :id => "1")
       No route matches "/shops/1"
     # ./spec/routing/backend/shops_routing_spec.rb:28:in `block (3 levels) in <module:Backend>'

  8) Backend::ShopsController routing routes to #destroy
     Failure/Error: expect(:delete => "/shops/1").to route_to("shops#destroy", :id => "1")
       No route matches "/shops/1"
     # ./spec/routing/backend/shops_routing_spec.rb:32:in `block (3 levels) in <module:Backend>'

  9) shops/edit renders the edit shop form
     Failure/Error: @shop = assign(:shop, Shop.create!(
     NameError:
       uninitialized constant Shop
     # ./spec/views/backend/shops/edit.html.erb_spec.rb:5:in `block (2 levels) in <top (required)>'

  10) shops/index renders a list of shops
     Failure/Error: Shop.create!(
     NameError:
       uninitialized constant Shop
     # ./spec/views/backend/shops/index.html.erb_spec.rb:6:in `block (2 levels) in <top (required)>'

  11) shops/new renders new shop form
     Failure/Error: assign(:shop, Shop.new(
     NameError:
       uninitialized constant Shop
     # ./spec/views/backend/shops/new.html.erb_spec.rb:5:in `block (2 levels) in <top (required)>'

  12) shops/show renders attributes in <p>
     Failure/Error: @shop = assign(:shop, Shop.create!(
     NameError:
       uninitialized constant Shop
     # ./spec/views/backend/shops/show.html.erb_spec.rb:5:in `block (2 levels) in <top (required)>'

Finished in 0.02859 seconds (files took 1.01 seconds to load)
29 examples, 12 failures, 17 pending

Failed examples:

rspec ./spec/controllers/backend/shops_controller_spec.rb:57 # Backend::ShopsController GET new assigns a new shop as @shop
rspec ./spec/routing/backend/shops_routing_spec.rb:7 # Backend::ShopsController routing routes to #index
rspec ./spec/routing/backend/shops_routing_spec.rb:11 # Backend::ShopsController routing routes to #new
rspec ./spec/routing/backend/shops_routing_spec.rb:15 # Backend::ShopsController routing routes to #show
rspec ./spec/routing/backend/shops_routing_spec.rb:19 # Backend::ShopsController routing routes to #edit
rspec ./spec/routing/backend/shops_routing_spec.rb:23 # Backend::ShopsController routing routes to #create
rspec ./spec/routing/backend/shops_routing_spec.rb:27 # Backend::ShopsController routing routes to #update
rspec ./spec/routing/backend/shops_routing_spec.rb:31 # Backend::ShopsController routing routes to #destroy
rspec ./spec/views/backend/shops/edit.html.erb_spec.rb:10 # shops/edit renders the edit shop form
rspec ./spec/views/backend/shops/index.html.erb_spec.rb:15 # shops/index renders a list of shops
rspec ./spec/views/backend/shops/new.html.erb_spec.rb:10 # shops/new renders new shop form
rspec ./spec/views/backend/shops/show.html.erb_spec.rb:10 # shops/show renders attributes in <p>

How can I fix this?

[JonRowe]

Add routes { MyEngine::Engine.routes } to your controller spec. As a side note, github issues are not the place to request support, please use the mailing list (https://groups.google.com/forum/#!forum/rspec) or #rspec on freenode.

[joowh85]

I think this is the Rspec code generator bug on the Rails mountable plugin project.
After add routes { MyEngine::Engine.routes } on my controller spec.
But the below problem was not solved.

1. shops/edit renders the edit shop form
   Failure/Error: @shop = assign(:shop, stub_model(Shop,
   NameError:
   uninitialized constant Shop

   ./spec/views/backend/shops/edit.html.erb_spec.rb:5:in `block (2 levels) in <top (required)>'

2. shops/index renders a list of shops
   Failure/Error: Shop.create!(
   NameError:
   uninitialized constant Shop

   ./spec/views/backend/shops/index.html.erb_spec.rb:6:in `block (2 levels) in <top (required)>'

3. shops/new renders new shop form
   Failure/Error: assign(:shop, Shop.new(
   NameError:
   uninitialized constant Shop

   ./spec/views/backend/shops/new.html.erb_spec.rb:5:in `block (2 levels) in <top (required)>'

4. shops/show renders attributes in

   
   Failure/Error: @shop = assign(:shop, Shop.create!(
   NameError:
   uninitialized constant Shop

   ./spec/views/backend/shops/show.html.erb_spec.rb:5:in `block (2 levels) in <top (required)>'

Finished in 0.06133 seconds (files took 1.16 seconds to load)
29 examples, 4 failures, 17 pending

[JonRowe]

Well shop is probably MyEngine::Shop ?

[joowh85]

Yes, MyEngine::Shop.
It was generated from the command "rails g scaffold shop".

module Backend
  class Shop < ActiveRecord::Base
  end
end

Generated rspec code.

require 'rails_helper'

RSpec.describe "shops/index", :type => :view do
  before(:each) do
    assign(:shops, [
      Shop.create!(
        :name => "Name"
      ),
      Shop.create!(
        :name => "Name"
      )
    ])
  end

  it "renders a list of shops" do
    render
    assert_select "tr>td", :text => "Name".to_s, :count => 2
  end
end

[cupakromer]

I've gotten some other errors in the process of using engines. I plan on getting to this and several other issues, between now and Monday.

[JonRowe]

@joowh85 yep, so you need to reference it as Backend::Shop thats how ruby works.

[joowh85]

Yep, But I can't found related articles, documents, any other.
Do you have a some links for that?
And Thanks guys (:

[cupakromer]

@joowh85 Unfortunately we do not yet. This is my main goal right now per #1227. We've had a sudden influx of users of engines recently. So I'm treating this as a top priority for myself right now.

[JonRowe]

@joowh85 please note that the constant lookup stuff is nothing to do with the engine and is purely down to how Ruby modules work, try this for a guide to how they work: http://rubymonk.com/learning/books/1-ruby-primer/chapters/35-modules/lessons/80-modules-as-namespaces

[joowh85]

Thanks @JonRowe

[joowh85]

Uninitialized constant was solved after adding the "Engine::Shop" but other issue pops up.

require 'rails_helper'

RSpec.describe "shops/edit", :type => :view do
  before(:each) do
    @shop = assign(:shop, Backend::Shop.create!(
      :name => "MyString"
    ))
  end

  it "renders the edit shop form" do
    render

    assert_select "form[action=?][method=?]", shop_path(@shop), "post" do

      assert_select "input#shop_name[name=?]", "shop[name]"
    end
  end
end

Stack traces.

  1) shops/edit renders the edit shop form
     Failure/Error: render
     ActionView::MissingTemplate:
       Missing template shops/edit with {:locale=>[:ko], :formats=>[:html, :text, :js, :css, :ics, :csv, :vcf, :png, :jpeg, :gif, :bmp, :tiff, :mpeg, :xml, :rss, :atom, :yaml, :multipart_form, :url_encoded_form, :json, :pdf, :zip], :variants=>[], :handlers=>[:erb, :builder, :raw, :ruby]}. Searched in:
         * "/home/sangwoojoo/work/backend/spec/dummy/app/views"
         * "/home/sangwoojoo/work/backend/app/views"
     # /home/sangwoojoo/.rvm/gems/ruby-2.2.0/gems/actionview-4.2.0/lib/action_view/path_set.rb:46:in `find'
     # /home/sangwoojoo/.rvm/gems/ruby-2.2.0/gems/actionview-4.2.0/lib/action_view/lookup_context.rb:121:in `find'
     # /home/sangwoojoo/.rvm/gems/ruby-2.2.0/gems/actionview-4.2.0/lib/action_view/renderer/abstract_renderer.rb:18:in `find_template'
     # /home/sangwoojoo/.rvm/gems/ruby-2.2.0/gems/actionview-4.2.0/lib/action_view/renderer/template_renderer.rb:40:in `determine_template'
     # /home/sangwoojoo/.rvm/gems/ruby-2.2.0/gems/actionview-4.2.0/lib/action_view/renderer/template_renderer.rb:8:in `render'
     # /home/sangwoojoo/.rvm/gems/ruby-2.2.0/gems/actionview-4.2.0/lib/action_view/renderer/renderer.rb:42:in `render_template'
     # /home/sangwoojoo/.rvm/gems/ruby-2.2.0/gems/actionview-4.2.0/lib/action_view/renderer/renderer.rb:23:in `render'
     # /home/sangwoojoo/.rvm/gems/ruby-2.2.0/gems/actionview-4.2.0/lib/action_view/helpers/rendering_helper.rb:32:in `render'
     # /home/sangwoojoo/.rvm/gems/ruby-2.2.0/gems/actionview-4.2.0/lib/action_view/test_case.rb:199:in `render'
     # /home/sangwoojoo/.rvm/gems/ruby-2.2.0/gems/actionview-4.2.0/lib/action_view/test_case.rb:120:in `render'
     # ./spec/views/backend/shops/edit.html.erb_spec.rb:11:in `block (2 levels) in <top (required)>'

Finished in 0.01827 seconds (files took 1.04 seconds to load)
1 example, 1 failure

Failed examples:

rspec ./spec/views/backend/shops/edit.html.erb_spec.rb:10 # shops/edit renders the edit shop form

routes { MyEngine::Engine.routes } <- this also not works.


/home/sangwoojoo/work/backend/spec/views/backend/shops/index.html.erb_spec.rb:4:in `block in <top (required)>': undefined method `routes' for RSpec::ExampleGroups::ShopsIndex:Class (NoMethodError)
    from /home/sangwoojoo/.rvm/gems/ruby-2.2.0/gems/rspec-core-3.1.7/lib/rspec/core/example_group.rb:325:in `module_exec'
    from /home/sangwoojoo/.rvm/gems/ruby-2.2.0/gems/rspec-core-3.1.7/lib/rspec/core/example_group.rb:325:in `subclass'
    from /home/sangwoojoo/.rvm/gems/ruby-2.2.0/gems/rspec-core-3.1.7/lib/rspec/core/example_group.rb:219:in `block in define_example_group_method'
    from /home/sangwoojoo/.rvm/gems/ruby-2.2.0/gems/rspec-core-3.1.7/lib/rspec/core/dsl.rb:41:in `block in expose_example_group_alias'
    from /home/sangwoojoo/work/backend/spec/views/backend/shops/index.html.erb_spec.rb:3:in `<top (required)>'
    from /home/sangwoojoo/.rvm/gems/ruby-2.2.0/gems/rspec-core-3.1.7/lib/rspec/core/configuration.rb:1105:in `load'
    from /home/sangwoojoo/.rvm/gems/ruby-2.2.0/gems/rspec-core-3.1.7/lib/rspec/core/configuration.rb:1105:in `block in load_spec_files'
    from /home/sangwoojoo/.rvm/gems/ruby-2.2.0/gems/rspec-core-3.1.7/lib/rspec/core/configuration.rb:1105:in `each'
    from /home/sangwoojoo/.rvm/gems/ruby-2.2.0/gems/rspec-core-3.1.7/lib/rspec/core/configuration.rb:1105:in `load_spec_files'
    from /home/sangwoojoo/.rvm/gems/ruby-2.2.0/gems/rspec-core-3.1.7/lib/rspec/core/runner.rb:96:in `setup'
    from /home/sangwoojoo/.rvm/gems/ruby-2.2.0/gems/rspec-core-3.1.7/lib/rspec/core/runner.rb:84:in `run'
    from /home/sangwoojoo/.rvm/gems/ruby-2.2.0/gems/rspec-core-3.1.7/lib/rspec/core/runner.rb:69:in `run'
    from /home/sangwoojoo/.rvm/gems/ruby-2.2.0/gems/rspec-core-3.1.7/lib/rspec/core/runner.rb:37:in `invoke'
    from /home/sangwoojoo/.rvm/gems/ruby-2.2.0/gems/rspec-core-3.1.7/exe/rspec:4:in `<top (required)>'
    from /home/sangwoojoo/.rvm/gems/ruby-2.2.0/bin/rspec:23:in `load'
    from /home/sangwoojoo/.rvm/gems/ruby-2.2.0/bin/rspec:23:in `<main>'
    from /home/sangwoojoo/.rvm/gems/ruby-2.2.0/bin/ruby_executable_hooks:15:in `eval'
    from /home/sangwoojoo/.rvm/gems/ruby-2.2.0/bin/ruby_executable_hooks:15:in `<main>'