```ruby
require 'rails_helper'

RSpec.describe CommentsController, :type => :controller do

end
```

Add spec controller with one test passed.
user
```ruby

require 'rails_helper'

RSpec.describe CommentsController, :type => :controller do

  
  let(:comment){Comment.new(body: "This is a great comment!",
                        user_id: 2,
                        response_id: 2)}

  let(:response){Comment.new(body: "This is a great response!",
                        user_id: 1,
                        response_id: 1)}

  describe "comment test success" do

  	it "comments#new" do
    	get :new, response_id: 2
   		expect(assigns(:comment)).to be_a Comment
      expect(response).to render_template(:new)
  	end
  end

    context "comments#create" do
    	it "creates a comment with valid params" do
        post :create, {response_id: 1, comment: {body: "what is it"} }
        expect(response).to redirect_to questions_path
    	end
  	end

      it "does not create a comment when params are invalid" do
      	post :create, {response_id: 1, comment: {body: nil} }
        expect(response).to render_template(:new)
    end

   #    context "#update" do
   #      before(:each) do

   #        @comment = Comment.create({body: "This is a great comment!"})
   #      end

   #      it "it updates a comment when params are valid" do
   #        put :update, id: @comment, comment: {body: "This is a great comment!"}
   #        expect(response).to redirect_to #ask peter
   #      end

   #      it "it does not update a comment when params are invalid" do
   #        put :update, id: @comment, comment: {body: nil}
   #        expect(response).to render_template(:edit)
   #      end
   #    end

      # it "#destroy" do
      #   comment = Comment.new
      #   comment.body = "greate comment"
      #   comment.save
      #   num_comments = Comment.count
      #   expect { delete :destroy, :id => comment }.to change { Comment.count }.from(num_comments).to(num_comments-1) #BUGBUG
      # end
end

```
assistant