Create freeze period frontend fixture

spec/frontend/fixtures/freeze_period.rb

+# frozen_string_literal: true
+
+require 'spec_helper'
+
+RSpec.describe 'Freeze Periods (JavaScript fixtures)' do
+  include JavaScriptFixturesHelpers
+
+  let_it_be(:admin) { create(:admin) }
+  let_it_be(:project) { create(:project, :repository, path: 'freeze-periods-project') }
+  let_it_be(:freeze_period) { create(:ci_freeze_period, project: project, created_at: 2.days.ago) }
+
+  before(:all) do
+    clean_frontend_fixtures('api/freeze-periods/')
+  end
+
+  after(:all) do
+    remove_repository(project)
+  end
+
+  describe API::FreezePeriods, '(JavaScript fixtures)', type: :request do
+    include ApiHelpers
+
+    it 'api/freeze-periods/freeze-periods.json' do
+      get api("/projects/#{project.id}/freeze_periods", admin)
+
+      expect(response).to be_successful
+    end
+  end
+end