1 files changed, 48 insertions, 0 deletions
diff --git a/spec/features/projects/services/prometheus_external_alerts_spec.rb b/spec/features/projects/services/prometheus_external_alerts_spec.rb
new file mode 100644
index 00000000000..e33b2d9a75e
--- /dev/null
+++ b/spec/features/projects/services/prometheus_external_alerts_spec.rb
@@ -0,0 +1,48 @@
+# frozen_string_literal: true
+
+require 'spec_helper'
+
+describe 'Prometheus external alerts', :js do
+  let(:project) { create(:project) }
+  let(:user) { create(:user) }
+
+  let(:alerts_section_selector) { '.js-prometheus-alerts' }
+  let(:alerts_section) { page.find(alerts_section_selector) }
+
+  before do
+    sign_in(user)
+    project.add_maintainer(user)
+
+    visit_edit_service
+  end
+
+  context 'with manual configuration' do
+    before do
+      create(:prometheus_service, project: project, api_url: 'http://prometheus.example.com', manual_configuration: '1', active: true)
+    end
+
+    it 'shows the Alerts section' do
+      visit_edit_service
+
+      expect(alerts_section).to have_content('Alerts')
+      expect(alerts_section).to have_content('Receive alerts from manually configured Prometheus servers.')
+      expect(alerts_section).to have_content('URL')
+      expect(alerts_section).to have_content('Authorization key')
+    end
+  end
+
+  context 'with no configuration' do
+    it 'does not show the Alerts section' do
+      wait_for_requests
+
+      expect(page).not_to have_css(alerts_section_selector)
+    end
+  end
+
+  private
+
+  def visit_edit_service
+    visit(project_settings_integrations_path(project))
+    click_link('Prometheus')
+  end
+end