catch 404 error for ldap overview (#11734) (#11738)

Co-authored-by: claire bontempo <[email protected]>

Author: hc-github-team-secure-vault-core

ui/lib/ldap/addon/components/page/overview.ts

@@ -97,8 +97,12 @@ export default class LdapLibrariesPageComponent extends Component<Args> {
       );
       this.checkInCapabilities = await this.capabilities.fetch(paths);
     } catch (error) {
-      // Hierarchical discovery failed - display inline error
-      this.librariesError = 'Unable to load complete library information. Please try refreshing the page.';
+      const { status } = await this.api.parseError(error);
+      // Only set error message if status is not a 404 which just means an empty response.
+      if (status !== 404) {
+        // Hierarchical discovery failed - display inline error
+        this.librariesError = 'Unable to load complete library information. Please try refreshing the page.';
+      }
       this.allLibraries = [];
     }
   });

ui/tests/integration/components/ldap/page/overview-test.js

@@ -197,4 +197,12 @@ module('Integration | Component | ldap | Page::Overview', function (hooks) {
       .dom('[data-test-overview-card-container="Accounts checked-out"]')
       .exists('AccountsCheckedOut component still renders when library discovery fails');
   });
+
+  test('it should display "None" when library request returns a 404', async function (assert) {
+    // Override server to return empty 404 response for library requests
+    this.apiLibraryStub.rejects(getErrorResponse({}, 404));
+    await this.renderComponent();
+    assert.dom('[data-test-libraries-error]').doesNotExist();
+    assert.dom('[data-test-libraries-count]').hasText('None');
+  });
 });