How to import Rails helpers in to the functional tests

Question

Hi I recently inherited a project in which the former dev was not familiar with rails, and decided to put a lot of important logic into the view helpers.

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Answer 1

The only solution i found was to re-factor and use a decent auth plugin

Answer 2

If you want to test helpers, you can follow the example here:

http://guides.rubyonrails.org/testing.html#testing-helpers

class UserHelperTest < ActionView::TestCase
  include UserHelper       ########### <<<<<<<<<<<<<<<<<<<

  test "should return the user name" do
    # ...
  end
end

This is for unit tests on individual methods. I think that if you want to test at a higher level, and you will be using multiple controllers w/redirects, you should use an integration test:

http://guides.rubyonrails.org/testing.html#integration-testing

As an example:

require 'test_helper'
 
class UserFlowsTest < ActionDispatch::IntegrationTest
  fixtures :users
 
  test "login and browse site" do
    # login via https
    https!
    get "/login"
    assert_response :success
 
    post_via_redirect "/login", username: users(:david).username, password: users(:david).password
    assert_equal '/welcome', path
    assert_equal 'Welcome david!', flash[:notice]
 
    https!(false)
    get "/posts/all"
    assert_response :success
    assert assigns(:products)
  end
end

Answer 3

Why re-factor? You can very easily include helpers from your project in your tests. I did the following to do so.

require_relative '../../app/helpers/import_helper'

Answer 4

To be able to use Devise in your tests, you should add

include Devise::TestHelpers

to each ActionController::TestCase instance. Then in the setup method you do

sign_in users(:one)

instead of

current_user = users(:one)

All your functional tests should work fine, then.