Plugin extensions: Add e2e tests (#89048)

* add custom plugins

* update bundles

* provision app plugins and their dashboards

* add one more script that run e2e tests using e2e test server

* add e2e tests

* regenerate jsonnet dashboards

* ignore custom plugins and playwright report

* use minified

* cleanup tests

* update codeowners

* add leading slash

* document new script

* document custom-plugins

* cleanup

* twist modules

* add readme

e2e/plugin-e2e/plugin-e2e-api-tests/as-admin-user/extensionPoints.spec.ts

@@ -0,0 +1,35 @@
+import { test, expect } from '@grafana/plugin-e2e';
+
+const testIds = {
+  container: 'main-app-body',
+  actions: {
+    button: 'action-button',
+  },
+  modal: {
+    container: 'container',
+    open: 'open-link',
+  },
+  appA: {
+    container: 'a-app-body',
+  },
+  appB: {
+    modal: 'b-app-modal',
+  },
+};
+
+const pluginId = 'myorg-extensionpoint-app';
+
+test('should extend the actions menu with a link to a-app plugin', async ({ page }) => {
+  await page.goto(`/a/${pluginId}/one`);
+  await page.getByTestId(testIds.actions.button).click();
+  await page.getByTestId(testIds.container).getByText('Go to A').click();
+  await page.getByTestId(testIds.modal.open).click();
+  await expect(page.getByTestId(testIds.appA.container)).toBeVisible();
+});
+
+test('should extend the actions menu with a command triggered from b-app plugin', async ({ page }) => {
+  await page.goto(`/a/${pluginId}/one`);
+  await page.getByTestId(testIds.actions.button).click();
+  await page.getByTestId(testIds.container).getByText('Open from B').click();
+  await expect(page.getByTestId(testIds.appB.modal)).toBeVisible();
+});