expecting <"index"> but render with <[]> - ruby-on-rails

Question

I'm having problems to pass a test in rails with rspec. This is what console tells me when I ran the tests.
The fail is ControlsController GET index logged in renders the index template
Failure/Error: expect(response). to render_template(:index)
expecting <"index"> but rendering with <[]>
And this is my code
require "rails_helper"
RSpec.describe ControlsController, :type => :controller do
render_views
describe "GET index" do
let(:user) {
FactoryGirl.create(:user)
}
let(:control) {
FactoryGirl.create(:control, user: user)
}
context "logged in" do
before :each do
sign_in :user, user
end
it "loads all controls into #controls" do
get :index, { user_id: user.id}
expect(assigns(:controls)).to eq([control])
end
it "assigns a new control to #control" do
get :index, { user_id: user.id}
expect(assigns(:control)).to be_a_new(Control)
end
it "renders the index template" do
get :index, { user_id: user.id}
expect(response). to render_template(:index)
end
it "a user can't see the controls from other user" do
new_user = User.create(name: "Juan",
email: "juan#gmail.com",
password: "123456789",
password_confirmation: "123456789")
get :index, { user_id: new_user.id}
expect(response).to redirect_to root_path
end
class ControlsController < ApplicationController
before_action :authenticate_user!
def index
#user= current_user
#control= Control.new
# #control_last = Control.lastcontrol (current_user.id)
# #controls_average = Control.controls_average (current_user.id)
# #controls_average_day = Control.controls_day_average (current_user.id)
#controls = Control.all
if params[:user_id] != current_user.id
redirect_to root_path
end
end

Answer 1

The answer is to make a private method and redirect_to user_controls_path current_user.name
This is the new code of the controller
controlsController.rb
class ControlsController < ApplicationController
before_action :authenticate_user!
before_action :redirect_if_not_current_user, only: :index
private
def control_params
params.require(:control).permit(:level, :period, :day)
end
def redirect_if_not_current_user
if params[:user_id] != current_user.name
redirect_to user_controls_path current_user.name
end
end