require 'rails_helper' RSpec.describe Like, type: :model do let(:like) { FactoryBot.build(:like) } it 'is valid' do expect(like).to be_valid end it 'must have a user_id' do like.user = nil expect(like).to be_invalid end it 'must have a post_id' do like.post = nil expect(like).to be_invalid end end