require "rails_helper" describe Follow do let(:follow) { build(:follow, :followed_proposal) } it "is valid" do expect(follow).to be_valid end it "is not valid without a user_id" do follow.user_id = nil expect(follow).not_to be_valid end it "is not valid without a followable_id" do follow.followable_id = nil expect(follow).not_to be_valid end it "is not valid without a followable_type" do follow.followable_type = nil expect(follow).not_to be_valid end end