Add groups integrations_controller_spec

Mostly copied from admin/integrations_controller_spec.rb

spec/controllers/groups/settings/integrations_controller_spec.rb

+# frozen_string_literal: true
+
+require 'spec_helper'
+
+describe Groups::Settings::IntegrationsController do
+  let(:user) { create(:user) }
+  let(:group) { create(:group) }
+  let!(:project) { create(:project) }
+
+  before do
+    sign_in(user)
+  end
+
+  describe '#edit' do
+    context 'when group_level_integrations not enabled' do
+      it 'returns not_found' do
+        allow(Feature).to receive(:enabled?).with(:group_level_integrations) { false }
+
+        get :edit, params: { group_id: group, id: Service.available_services_names.sample }
+
+        expect(response).to have_gitlab_http_status(:not_found)
+      end
+    end
+
+    context 'when user is not owner' do
+      it 'renders not_found' do
+        get :edit, params: { group_id: group, id: Service.available_services_names.sample }
+
+        expect(response).to have_gitlab_http_status(:not_found)
+      end
+    end
+
+    context 'when user is owner' do
+      before do
+        group.add_owner(user)
+      end
+
+      Service.available_services_names.each do |integration_name|
+        context "#{integration_name}" do
+          it 'successfully displays the template' do
+            get :edit, params: { group_id: group, id: integration_name }
+
+            expect(response).to have_gitlab_http_status(:ok)
+            expect(response).to render_template(:edit)
+          end
+        end
+      end
+    end
+  end
+
+  describe '#update' do
+    let(:integration) { create(:jira_service, project: project) }
+
+    before do
+      group.add_owner(user)
+
+      put :update, params: { group_id: group, id: integration.class.to_param, service: { url: url } }
+    end
+
+    context 'valid params' do
+      let(:url) { 'https://jira.gitlab-example.com' }
+
+      it 'updates the integration' do
+        expect(response).to have_gitlab_http_status(:found)
+        expect(integration.reload.url).to eq(url)
+      end
+    end
+
+    context 'invalid params' do
+      let(:url) { 'ftp://jira.localhost' }
+
+      it 'does not update the integration' do
+        expect(response).to have_gitlab_http_status(:ok)
+        expect(response).to render_template(:edit)
+        expect(integration.reload.url).not_to eq(url)
+      end
+    end
+  end
+
+  describe '#test' do
+    context 'testable' do
+      let(:integration) { create(:jira_service, project: project) }
+
+      before do
+        group.add_owner(user)
+      end
+
+      it 'returns ok' do
+        allow_any_instance_of(integration.class).to receive(:test) { { success: true } }
+
+        put :test, params: { group_id: group, id: integration.class.to_param }
+
+        expect(response).to have_gitlab_http_status(:ok)
+      end
+    end
+
+    context 'not testable' do
+      let(:integration) { create(:alerts_service, project: project) }
+
+      it 'returns not found' do
+        put :test, params: { group_id: group, id: integration.class.to_param }
+
+        expect(response).to have_gitlab_http_status(:not_found)
+      end
+    end
+  end
+end