Dynamically add method in before(:all)

Question

Im testing a Module that can be included in a Controller. Right now the code looks like that:

class GithubAuthorizationController < ApplicationController
  include Frontend::Concerns::GithubAuthorization

  def index
    render inline: "lorem_ipsum"
  end
end

describe GithubAuthorizationController do
  before(:all) do
    @page_content = "lorem_ipsum"
  end
  ...........

As you can see I basically create a Test-Controller before the tests are run. Now I would like to add the module and index method in the before(:all)-block. I tried:

class GithubAuthorizationController < ApplicationController
end

describe GithubAuthorizationController do
  before(:all) do
    @page_content = "lorem_ipsum"

    class < @controller
      include Frontend::Concerns::GithubAuthorization

      def index
        render inline: "lorem_ipsum"
      end
    end
  end
  ...........

As I can see in debugger in the before(:all) block the @controller is defined as <GithubAuthorizationController .... So It is a instance. There Is also no error when running the code, but the tests fails, because of The action 'index' could not be found ...

What do I wrong? How can I move the code to the before(:all) block? Thanks

Frederick Cheung · Accepted Answer · 2016-04-17 10:36:24Z

2

The way to do this in rspec is with a controller block:

describe GithubAuthorizationController, type: :controller do
  context "with module" do
    controller do
      include Frontend::Concerns::GithubAuthorization

      def index
        render inline: "lorem_ipsum"
      end
    end

    # within this block the controller will be the anonymous controller class created above 
  end
end

If you have set infer_base_class_for_anonymous_controllers to false (this is not the default) then you need to do controller(GithubAuthorizationController) or you'll inherit directly from ApplicationController

Your issue could be down to a missing route - the controller helper creates some routes for you (for the default index, show etc.) actions. You can add extra ones in an example with

 it "does something with a custom route" do 
  routes.draw { get "custom" => "github_authorization#custom" } 
  get :custom
    ...
end

edited Apr 17, 2016 at 10:36

answered Apr 17, 2016 at 10:20

Frederick Cheung

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4 Comments

John Smith Over a year ago

Hi, great answer. I would really like to use this solution. But right now Im getting ` method_missing': undefined method controller' for Class.Do you have an idea why it fails? Can you send me the docs for controller do. I was not able to find them. Thanks

John Smith Over a year ago

Ok seems to work with control_class. Great. Now Im getting the error with missing routes. Where would you add the routes.draw { get "custom" => "github_authorization#custom" } block? in the context?

Frederick Cheung Over a year ago

You may need type: :controller on the spec, as I have just added. See relishapp.com/rspec/rspec-rails/v/3-4/docs/controller-specs/…

John Smith Over a year ago

Thanks! Great Answer!

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