Rspec-rails: In controller specs params that are hashes are not passed to controller action

[antonrd]

Hello,

I'm converting a Rails 4.2 project to Rails 5.0 and changing the existing controller specs. rspec-rails is at 3.6.0, ruby is 2.3.3. I've included the rails-controller-testing gem in the project.

One spec passes a param that is a hash, like that:

    describe "#submit" do
      before do
        params = {param1: 'hello', param2: {}, id: quiz.id}
        post :submit, params: params
      end

      it { is_expected.to respond_with(:found) }
      it { is_expected.to redirect_to(quiz_path(quiz)) }
    end

In the controller action if I print the received params:

  def submit
    p params
    ...
  end

the output is like that:

<ActionController::Parameters {"param1"=>"hello", "id"=>"7938", "controller"=>"quizzes", "action"=>"submit"} permitted: false>

The param2 param is missing, while the param1 param is present. This is why it seems to me that the hash param is skipped somehow.

[laertispappas]

You need to pas as: :json to your request. See related issue https://github.com/rails/rails/issues/26569

post :submit, params: params, as: :json

[antonrd]

@laertispappas: thanks for the comment, updating to Rails 5.0.5 and using as: :json resolves the issue.