Rspec expect -> change syntax

gistfile1.rb

 context "when created" do
    it "tracked into activities " do
      expect{FactoryGirl.create(:drink_report)}.to change(Activity.count).by(1)
    end
  end

error :     Failure/Error: expect{FactoryGirl.create(:drink_report)}.to change(Activity.count).by(1)
     TypeError:
       nil is not a symbol
       
should change () => {} on the assertion 

 context "when created" do
    it "tracked into activities " do
      expect{FactoryGirl.create(:drink_report)}.to change{Activity.count)}.by(1)
    end
  end
  
  or another correct way.
   context "when created" do
    it "tracked into activities " do
      expect{FactoryGirl.create(:drink_report)}.to change{Activity.count)}.by(1)
    end
  end
  
   context "when created" do
    it "tracked into activities " do
      expect{FactoryGirl.create(:drink_report)}.to change(Activity, :count).by(1)
    end
  end