[Dashboard] Add functional test for panel listing types (#205808)

Fixes #192663

## Summary

Add functional tests that verify the number of panel types registered in
the dashboards Add panel flyout. Any changes to the number of registered
panel types will trigger a review from the
`@elastic/kibana-presentation` team.

This PR also adds an additional test for panel types registered with an
advanced license.

test/functional/apps/dashboard/group5/dashboard_panel_listing.ts

@@ -33,7 +33,7 @@ export default function ({ getService, getPageObjects }: FtrProviderContext) {
       await kibanaServer.savedObjects.cleanStandardList();
     });
 
-    it('renders a panel with predefined order of panel groups', async () => {
+    it('renders a panel with predefined order of panel groups and panels', async () => {
       await PageObjects.dashboard.navigateToApp();
       await PageObjects.dashboard.clickNewDashboard();
       await PageObjects.dashboard.switchToEditMode();
@@ -48,6 +48,8 @@ export default function ({ getService, getPageObjects }: FtrProviderContext) {
         '[data-test-subj*="dashboardEditorMenu-"]'
       );
 
+      const panelTypes = await panelSelectionList.findAllByCssSelector('li');
+
       for (let i = 0; i < panelGroups.length; i++) {
         const panelGroup = panelGroups[i];
         const order = await panelGroup.getAttribute('data-group-sort-order');
@@ -67,6 +69,9 @@ export default function ({ getService, getPageObjects }: FtrProviderContext) {
         'observabilityGroup',
         'legacyGroup',
       ]);
+
+      // Any changes to the number of panels needs to be audited by @elastic/kibana-presentation
+      expect(panelTypes.length).to.eql(11);
     });
   });
 }

x-pack/test/functional/apps/dashboard/group2/dashboard_panel_listing.ts

@@ -0,0 +1,76 @@
+/*
+ * Copyright Elasticsearch B.V. and/or licensed to Elasticsearch B.V. under one
+ * or more contributor license agreements. Licensed under the Elastic License
+ * 2.0; you may not use this file except in compliance with the Elastic License
+ * 2.0.
+ */
+
+import expect from '@kbn/expect';
+
+import { FtrProviderContext } from '../../../ftr_provider_context';
+
+export default function ({ getService, getPageObjects }: FtrProviderContext) {
+  const { dashboard } = getPageObjects(['dashboard']);
+  const testSubjects = getService('testSubjects');
+  const kibanaServer = getService('kibanaServer');
+  const dashboardAddPanel = getService('dashboardAddPanel');
+
+  describe('dashboard panel listing', function () {
+    this.tags('skipFIPS');
+    before(async () => {
+      await kibanaServer.savedObjects.cleanStandardList();
+      await kibanaServer.importExport.load(
+        'test/functional/fixtures/kbn_archiver/dashboard/current/kibana'
+      );
+      await kibanaServer.uiSettings.replace({
+        defaultIndex: '0bf35f60-3dc9-11e8-8660-4d65aa086b3c',
+      });
+    });
+
+    after(async () => {
+      await kibanaServer.savedObjects.cleanStandardList();
+    });
+
+    it('renders a panel with predefined order of panel groups and panels', async () => {
+      await dashboard.navigateToApp();
+      await dashboard.clickNewDashboard();
+      await dashboard.switchToEditMode();
+
+      await dashboardAddPanel.clickEditorMenuButton();
+
+      const panelSelectionList = await testSubjects.find('dashboardPanelSelectionList');
+
+      const panelGroupByOrder = new Map();
+
+      const panelGroups = await panelSelectionList.findAllByCssSelector(
+        '[data-test-subj*="dashboardEditorMenu-"]'
+      );
+
+      const panelTypes = await panelSelectionList.findAllByCssSelector('li');
+
+      for (let i = 0; i < panelGroups.length; i++) {
+        const panelGroup = panelGroups[i];
+        const order = await panelGroup.getAttribute('data-group-sort-order');
+        // @ts-ignore
+        const [, panelGroupTitle] = (await panelGroup.getAttribute('data-test-subj'))?.match(
+          /dashboardEditorMenu-(.*)/
+        );
+
+        panelGroupByOrder.set(order, panelGroupTitle);
+      }
+
+      expect(panelGroupByOrder.size).to.eql(5);
+
+      expect([...panelGroupByOrder.values()]).to.eql([
+        'visualizationsGroup',
+        'annotation-and-navigationGroup',
+        'mlGroup',
+        'observabilityGroup',
+        'legacyGroup',
+      ]);
+
+      // Any changes to the number of panels needs to be audited by @elastic/kibana-presentation
+      expect(panelTypes.length).to.eql(21);
+    });
+  });
+}

x-pack/test/functional/apps/dashboard/group2/index.ts

@@ -14,6 +14,7 @@ export default function ({ loadTestFile }: FtrProviderContext) {
     loadTestFile(require.resolve('./dashboard_lens_by_value'));
     loadTestFile(require.resolve('./dashboard_maps_by_value'));
     loadTestFile(require.resolve('./dashboard_search_by_value'));
+    loadTestFile(require.resolve('./dashboard_panel_listing'));
     loadTestFile(require.resolve('./panel_titles'));
     loadTestFile(require.resolve('./panel_time_range'));