An RSpec matcher for UUIDs.
require "rspec/uuid"
it { is_expected.to be_a_uuid }
# check the version
it { is_expected.to be_a_uuid(version: 4) }
it { is_expected.to be_a_uuid.of_version(4) }
# compose with other matchers
it { expect(data).to include(uuid: a_uuid) }# Gemfile
gem "rspec-uuid"or
gem install rspec-uuid