[Endpoint] TEST: verify alerts page header says 'Alerts' (elastic#60206)

* test to verify alerts page header says alerts

* updating test with pr feedback

* updating test with pr feedback and better verbiage

* updating test with pr feedback for better test titling

Co-authored-by: Elastic Machine <elasticmachine@users.noreply.github.com>

x-pack/plugins/endpoint/public/applications/endpoint/view/alerts/index.tsx

@@ -233,7 +233,7 @@ export const AlertIndex = memo(() => {
             <EuiPageContentHeader>
               <EuiPageContentHeaderSection>
                 <EuiTitle size="l">
-                  <h1>
+                  <h1 data-test-subj="alertsViewTitle">
                     <FormattedMessage
                       id="xpack.endpoint.alertList.viewTitle"
                       defaultMessage="Alerts"

x-pack/test/functional/apps/endpoint/alert_list.ts

@@ -12,16 +12,20 @@ export default function({ getPageObjects, getService }: FtrProviderContext) {
   const esArchiver = getService('esArchiver');
   const browser = getService('browser');
 
-  describe('Endpoint Alert List', function() {
+  describe('Endpoint Alert List page', function() {
     this.tags(['ciGroup7']);
     before(async () => {
       await esArchiver.load('endpoint/alerts/api_feature');
       await pageObjects.common.navigateToUrlWithBrowserHistory('endpoint', '/alerts');
     });
 
-    it('loads the Alert List Page', async () => {
+    it('loads in the browser', async () => {
       await testSubjects.existOrFail('alertListPage');
     });
+    it('contains the Alert List Page title', async () => {
+      const alertsTitle = await testSubjects.getVisibleText('alertsViewTitle');
+      expect(alertsTitle).to.equal('Alerts');
+    });
     it('includes alerts search bar', async () => {
       await testSubjects.existOrFail('alertsSearchBar');
     });