Ruby on Rails

please help solve the problem.

poll controller:

class PollsController < ApplicationController
def index
@user = User.find(params[:user_id])
@polls = @user.polls.paginate(page: params[:page], :per_page =>
10).order(title: :DESC)
end
end

route:

user_polls GET /users/:user_id/polls(.:format)
polls#index

polls_controller_spec.rb:
RSpec.describe PollsController, type: :controller do
describe "GET #index" do
before :all do
@user = FactoryGirl.create(:user)
end


it "assign user as @user" do
get :index, user_id: @user.id
expect(assigns(:user)).to eq(@user)
end


it "assigns polls as @polls" do
get :index, user_id: @user.id
expect(assigns(:polls)).to eq([@poll])
end


it "redirects to the index view" do
get :index, user_id: @user.id
expect(response).to render_template("index")
end
end
end

after run tests, i get follow error message:

kalinin@kalinin ~/rails/phs $ rspec
spec/controllers/polls_controller_spec.rb
.F.
Failures:
1) PollsController GET #index assigns polls as @polls
Failure/Error: expect(assigns(:polls)).to eq([@poll])
expected: [nil]
got: #<ActiveRecord::AssociationRelation []>
(compared using ==)
Diff:
@@ -1,2 +1,2 @@
-[nil]
+[]
# ./spec/controllers/polls_controller_spec.rb:16:in `block (3
levels) in <top (required)>'

Finished in 1.23 seconds (files took 2.81 seconds to load)
3 examples, 1 failure
Failed examples:
rspec ./spec/controllers/polls_controller_spec.rb:14 # PollsController
GET #index assigns polls as @polls


as you can see problem in test 'assigns polls as @polls'. I do not
understand why array @polls is empty

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