[ui] Remove unnecessary subnav for parent jobs (#17190)

* Nest job subnav in a parent-check

* Move the evaluation tab test to withn an else of the children condition

ui/app/components/job-subnav.js

@@ -16,4 +16,11 @@ export default class JobSubnav extends Component {
       job?.hasClientStatus && !job?.hasChildren && this.can.can('read client')
     );
   }
+
+  // Periodic and Parameterized jobs "parents" are not jobs unto themselves, but more like summaries.
+  // They should not have tabs for allocations, evaluations, etc.
+  // but their child jobs, and other job types generally, should.
+  get shouldHideNonParentTabs() {
+    return this.args.job?.hasChildren;
+  }
 }

ui/app/templates/components/job-subnav.hbs

@@ -44,6 +44,7 @@
         </LinkTo>
       </li>
     {{/if}}
+    {{#unless this.shouldHideNonParentTabs}}
       <li data-test-tab="allocations">
         <LinkTo
           @route="jobs.job.allocations"
@@ -82,5 +83,6 @@
           Services
         </LinkTo>
       </li>
+    {{/unless}}
   </ul>
 </div>

ui/tests/helpers/module-for-job.js

@@ -101,16 +101,6 @@ export default function moduleForJob(
       assert.equal(decodeURIComponent(currentURL()), expectedURL);
     });
 
-    test('the subnav links to evaluations', async function (assert) {
-      await JobDetail.tabFor('evaluations').visit();
-
-      const expectedURL = job.namespace
-        ? `/jobs/${job.name}@${job.namespace}/evaluations`
-        : `/jobs/${job.name}/evaluations`;
-
-      assert.equal(decodeURIComponent(currentURL()), expectedURL);
-    });
-
     test('the title buttons are dependent on job status', async function (assert) {
       if (job.status === 'dead') {
         assert.ok(JobDetail.start.isPresent);
@@ -229,6 +219,16 @@ export default function moduleForJob(
           'Allocations are not shown in the summary section'
         );
       });
+    } else {
+      test('the subnav links to evaluations', async function (assert) {
+        await JobDetail.tabFor('evaluations').visit();
+
+        const expectedURL = job.namespace
+          ? `/jobs/${job.name}@${job.namespace}/evaluations`
+          : `/jobs/${job.name}/evaluations`;
+
+        assert.equal(decodeURIComponent(currentURL()), expectedURL);
+      });
     }
 
     for (var testName in additionalTests) {