Set up test_helpers for inspecting pageHeaders

- primarily useful for rightSideItems, which often contain conditional logic

x-pack/plugins/enterprise_search/public/applications/test_helpers/get_page_header.tsx

@@ -0,0 +1,43 @@
+/*
+ * 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 React, { Fragment } from 'react';
+
+import { shallow, ShallowWrapper } from 'enzyme';
+
+import { EuiPageHeaderProps } from '@elastic/eui';
+
+/*
+ * Given an AppSearchPageTemplate or WorkplaceSearchPageTemplate, these
+ * helpers dive into various parts of the EuiPageHeader to make assertions
+ * slightly less of a pain in shallow renders
+ */
+
+export const getPageHeader = (wrapper: ShallowWrapper) => {
+  const pageHeader = wrapper.prop('pageHeader') as EuiPageHeaderProps;
+  return pageHeader || {};
+};
+
+export const getPageTitle = (wrapper: ShallowWrapper) => {
+  return getPageHeader(wrapper).pageTitle;
+};
+
+export const getPageDescription = (wrapper: ShallowWrapper) => {
+  return getPageHeader(wrapper).description;
+};
+
+export const getPageHeaderActions = (wrapper: ShallowWrapper) => {
+  const actions = getPageHeader(wrapper).rightSideItems || [];
+
+  return shallow(
+    <div>
+      {actions.map((action: React.ReactNode, i) => (
+        <Fragment key={i}>{action}</Fragment>
+      ))}
+    </div>
+  );
+};

x-pack/plugins/enterprise_search/public/applications/test_helpers/index.ts

@@ -10,6 +10,12 @@ export { mountAsync } from './mount_async';
 export { mountWithIntl } from './mount_with_i18n';
 export { shallowWithIntl } from './shallow_with_i18n';
 export { rerender } from './enzyme_rerender';
+export {
+  getPageHeader,
+  getPageTitle,
+  getPageDescription,
+  getPageHeaderActions,
+} from './get_page_header';
 
 // Misc
 export { expectedAsyncError } from './expected_async_error';