require 'rails_helper' RSpec.describe Region, type: :model do context "validations" do it { is_expected.to validate_presence_of(:abbreviation) } it { is_expected.to validate_uniqueness_of(:abbreviation) .with_message("must be unique") } it { is_expected.to validate_presence_of(:description) } it { is_expected.to validate_presence_of(:name) } end context "associations" do it { is_expected.to belong_to :super_region } it { is_expected.to have_many :sub_regions } end end