rails-controller-testing: Adding rails-controller-testing** gem does not fix NoMethodError message

Adding rails-controller-testing gem to my Rails 5 fork of codeforatlanta’s show-me-the-food5 (https://github.com/jasnow/show-me-the-food5) repo’s Gemfile does not fix the following message:

NoMethodError:assigns has been extracted to a gem. To continue using it, add gem 'rails-controller-testing' to your Gemfile.

Appears to not be the only one: http://stackoverflow.com/questions/30605868/rails-controller-testing-gem

If you run “rake” before upgrading to the most recent version of Rails 5, no tests break.

After adding the gem rails-controller-testing, running “bundle update”, and then running “rake,” you get:

Failures:

  1) LocationsController#index assigns @locations
     Failure/Error: subject{ assigns(:locations) }
     NoMethodError:
       assigns has been extracted to a gem. To continue using it,
               add `gem 'rails-controller-testing'` to your Gemfile.
     # /home/jasnow/.rvm/gems/ruby-2.2.2/bundler/gems/rails-7220ffcffd00/
       actionpack/lib/action_dispatch/testing/test_process.rb:8:in `assigns'
     # ./spec/controllers/locations_controller_spec.rb:5:in `block
       (3 levels) in <top (required)>'
     # ./spec/controllers/locations_controller_spec.rb:9:in `block
       (3 levels) in <top (required)>'

Finished in 0.29375 seconds (files took 3.41 seconds to load)
1 example, 1 failure

About this issue

Original URL
State: closed
Created 9 years ago
Comments: 44 (5 by maintainers)

Commits related to this issue

Remove assert_template because of error message https://github.com/rails/rails-controller-testing/issues/5 — committed to cheshire137/competiwatch by cheshire137 6 years ago
Update README.md to include configurations for RSpec. fixes https://github.com/rails/rails-controller-testing/issues/5 — committed to Good725/controller-rails by Good725 8 years ago

Most upvoted comments

This issue still seems to be active with Rails 5.1.6, RSpec 3.7.2, and rails-controller-testing 1.0.2.

I’ve tried all the solutions here, and nothing has worked. Here’s my spec_helper.rb:

...

require 'rails-controller-testing'
require "rails/controller/testing/test_process"
require "rails/controller/testing/integration"
require "rails/controller/testing/template_assertions"

...

RSpec.configure do |config|
  config.include Rails::Controller::Testing::TestProcess, type: :controller
  config.include Rails::Controller::Testing::Integration, type: :controller
  config.include Rails::Controller::Testing::TemplateAssertions, type: :controller
end

...

Still I get the following error:

NoMethodError:
       assigns has been extracted to a gem. To continue using it,
               add `gem 'rails-controller-testing'` to your Gemfile.

Help!

Onikoroshi on Jun 8, 2018

This worked for me:

group :development, :test do
  # Call 'byebug' anywhere in the code to stop execution and get a debugger console
  gem 'byebug', platforms: [:mri, :mingw, :x64_mingw]
  gem 'rails-controller-testing'
end

CornerstoneII on Dec 23, 2020

Rails 6.0.0.rc1, Ruby 2.6.0p0, still the error persists after adding rails-controller-testing gem
NoMethodError: assigns has been extracted to a gem. To continue using it,
add `gem 'rails-controller-testing'` to your Gemfile.

osfa on May 12, 2020

On my project it works fine with controller tests, but when I try to use it within a request spec I get:

NoMethodError:
       assigns has been extracted to a gem. To continue using it,
               add `gem 'rails-controller-testing'` to your Gemfile.

Versions: rails 5.1.4, rspec-rails 3.7.2, rails-controller-testing 1.0.2

samanthamjohn on Sep 4, 2018

In case anyone else runs into this issue, the README file’s section about usage with RSpec has since been modified, so the note that @tgxworld is alluding to no longer exists. It can be found, however, in this commit: https://github.com/rails/rails-controller-testing/commit/f756b33c138c593eabe37f6085f8bac477b99bfe

jprince on Dec 31, 2015