require 'rails_helper' describe MyModuleGroup, type: :model do it 'should be of class MyModuleGroup' do expect(subject.class).to eq MyModuleGroup end describe 'Database table' do it { should have_db_column :id } it { should have_db_column :created_at } it { should have_db_column :updated_at } it { should have_db_column :created_by_id } it { should have_db_column :experiment_id } end describe 'Relations' do it { should belong_to :experiment } it { should belong_to(:created_by).class_name('User') } it { should have_many(:my_modules) } end describe 'Should be a valid object' do it { should validate_presence_of :experiment } end end