require 'rails_helper' describe SampleMyModule, type: :model do it 'should be of class SampleMyModule' do expect(subject.class).to eq SampleMyModule end describe 'Database table' do it { should have_db_column :sample_id } it { should have_db_column :my_module_id } it { should have_db_column :assigned_by_id } it { should have_db_column :assigned_on } end describe 'Relations' do it { should belong_to(:assigned_by).class_name('User') } it { should belong_to :sample } it { should belong_to :my_module } end describe 'Should be a valid object' do it { should validate_presence_of :sample } it { should validate_presence_of :my_module } it { should validate_uniqueness_of(:sample_id).scoped_to(:my_module_id) } end end