mgr/dashboard: Hosts Page Service Links Tests

Test at least one host is present
Test links in "Services" column on hosts page properly link to Performance Counters pages

Fixes: https://tracker.ceph.com/issues/41142

Signed-off-by: Adam King <adking@redhat.com>
Signed-off-by: Rafael Quintero <rquinter@redhat.com>

src/pybind/mgr/dashboard/frontend/e2e/cluster/hosts.e2e-spec.ts

@@ -32,4 +32,14 @@ describe('Hosts page', () => {
       expect(hosts.getTabText(1)).toEqual('Overall Performance');
     });
   });
+
+  describe('services link test', () => {
+    it('should check at least one host is present', () => {
+      hosts.check_for_host();
+    });
+
+    it('should check services link(s) work for first host', () => {
+      hosts.check_services_links();
+    });
+  });
 });

src/pybind/mgr/dashboard/frontend/e2e/cluster/hosts.po.ts

@@ -1,5 +1,52 @@
+import { by, element } from 'protractor';
 import { PageHelper } from '../page-helper.po';
 
 export class HostsPageHelper extends PageHelper {
   pages = { index: '/#/hosts' };
+
+  check_for_host() {
+    this.navigateTo();
+
+    this.getTableCount()
+      .getText()
+      .then((hostcount) => {
+        expect(hostcount.includes('0 total')).toBe(false);
+      });
+  }
+
+  // function that checks all services links work for first
+  // host in table
+  check_services_links() {
+    this.navigateTo();
+    let links_tested = 0;
+
+    // grab services column for first host
+    const services = element.all(by.css('.datatable-body-cell')).get(1);
+    // check is any services links are present
+    services
+      .getText()
+      .then((txt) => {
+        // check that text (links) is present in services box
+        expect(txt.length).toBeGreaterThan(0, 'No services links exist on first host');
+        if (txt.length === 0) {
+          return;
+        }
+        const links = services.all(by.css('a.ng-star-inserted'));
+        links.count().then((num_links) => {
+          for (let i = 0; i < num_links; i++) {
+            // click link, check it worked by looking for changed breadcrumb,
+            // navigate back to hosts page, repeat until all links checked
+            links.get(i).click();
+            expect(this.getBreadcrumbText()).toEqual('Performance Counters');
+            this.navigateTo();
+            expect(this.getBreadcrumbText()).toEqual('Hosts');
+            links_tested++;
+          }
+        });
+      })
+      .then(() => {
+        // check if any links were actually tested
+        expect(links_tested > 0).toBe(true, 'No links were tested. Test failed');
+      });
+  }
 }