require 'rails_helper' RSpec.describe Language, type: :model do context "validations" do subject { build(:language) } it { is_expected.to validate_presence_of(:name) } it { is_expected.to validate_length_of(:name).is_at_most(20) } 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 allow_values('en', 'en_GB').for(:abbreviation) } it { is_expected.not_to allow_value('NOOP', 'en_', 'EN') .for(:abbreviation) } it { is_expected.to validate_length_of(:abbreviation).is_at_most(5) } end end