require 'rails_helper' describe Project do it {is_expected.to have_many(:tasks)} it { is_expected.to have_many(:tasks)} it { is_expected.to have_many(:user_project_participations)} it { is_expected.to have_many(:users)} it { is_expected.to have_many(:versions)} it { is_expected.to belong_to(:customer)} it { is_expected.to belong_to(:supplier)} end