test for ci shared runner settings adjustments

spec/factories/namespaces.rb

@@ -4,6 +4,10 @@ FactoryGirl.define do
     path { name.downcase.gsub(/\s/, '_') }
     owner
 
+    trait :with_build_minutes do
+      namespace_metrics factory: :namespace_metrics, shared_runners_minutes: 400
+    end
+
     trait :with_build_minutes_limit do
       shared_runners_minutes_limit 500
     end

spec/features/ci_shared_runner_settings_spec.rb

+require 'spec_helper'
+
+feature 'CI shared runner settings', feature: true do
+  let(:admin) { create(:admin) }
+  let(:group) { create(:group, :with_build_minutes) }
+  let!(:project) { create(:project, namespace: group, shared_runners_enabled: true) }
+
+  before do
+    login_as(admin)
+  end
+
+  context 'without global shared runners quota' do
+    scenario 'should display ratio with global quota' do
+      visit_admin_group_path
+      expect(page).to have_content("Build minutes quota: 400 / Unlimited")
+      expect(page).to have_selector('.shared_runners_limit_disabled')
+    end
+  end
+
+  context 'with global shared runners quota' do
+    before do
+      set_admin_shared_runners_minutes 500
+    end
+
+    scenario 'should display ratio with global quota' do
+      visit_admin_group_path
+      expect(page).to have_content("Build minutes quota: 400 / 500")
+      expect(page).to have_selector('.shared_runners_limit_under_quota')
+    end
+
+    scenario 'should display new ratio with overridden group quota' do
+      set_group_shared_runners_minutes 300
+      visit_admin_group_path
+      expect(page).to have_content("Build minutes quota: 400 / 300")
+      expect(page).to have_selector('.shared_runners_limit_over_quota')
+    end
+
+    scenario 'should display unlimited ratio with overridden group quota' do
+      set_group_shared_runners_minutes 0
+      visit_admin_group_path
+      expect(page).to have_content("Build minutes quota: 400 / Unlimited")
+      expect(page).to have_selector('.shared_runners_limit_disabled')
+    end
+  end
+
+  def set_admin_shared_runners_minutes(limit)
+    visit admin_application_settings_path
+    fill_in 'application_setting_shared_runners_minutes', with: limit
+    click_on 'Save'
+  end
+
+  def set_group_shared_runners_minutes(limit)
+    visit admin_group_edit_path(group)
+    fill_in 'group_shared_runners_minutes_limit', with: limit
+    click_on 'Save changes'
+  end
+
+  def visit_admin_group_path
+    visit admin_group_path(group)
+  end
+end