RSpec: scaffold index undefined method create

Rails 3.1.3 rspec-rails (2.11.4) rspec 2.11.1

I have generated a scaffold named Plan. And I have not done RSpec tests for controllers at all.

schema.rb

  create_table "plans", :force => true do |t|     t.integer "give_take"     t.integer "weight"     t.boolean "check_in"     t.datetime "created_at"     t.datetime "updated_at"     t.integer "flight_name_id"   end

plans_controller.rb

  def index     @plans = Plan.all

    respond_to do |format|       format.html # index.html.erb       format.json { render json: @plans }     end   end

spec/factories/plans.rb

FactoryGirl.define do   factory :plan do     give_take 1     weight 1     check_in false     flight_name_id 11   end end

plans_controller_spec.rb

  describe "GET index" do     it "populates an array of plans" do       plan = create(:plan) #######HERE!!!!!       get :index       assigns(:plans).should eq [plan]     end

    it "renders the :index view" do       get :index       response.should render_template :index     end   end

It raises a failure for index

  2) PlansController GET index populates an array of plans      Failure/Error: plan = create(:plan)      NoMethodError:        undefined method `create' for #<RSpec::Core::ExampleGroup::Nested_1::Nested_1:0x000001037a8e70>      # ./spec/controllers/plans_controller_spec.rb:45:in `block (3 levels) in <top (required)>'

Certainly I haven't defined method "create" anywhere except the one generated by scaffold, which is not shown here.

How can I CREATE an instance here?

soichi