From 1ecbb1837ea47a4de2e17272c6f7979c239c90ff Mon Sep 17 00:00:00 2001
From: Benjamin Janssens <benji.janssens@gmail.com>
Date: Tue, 7 Apr 2026 15:26:35 +0200
Subject: [PATCH] test(app): add tests

Signed-off-by: Benjamin Janssens <benji.janssens@gmail.com>
---
 plugins/app/src/extensions/AppNav.test.tsx | 100 +++++++++++++++++++++
 1 file changed, 100 insertions(+)
 create mode 100644 plugins/app/src/extensions/AppNav.test.tsx

diff --git a/plugins/app/src/extensions/AppNav.test.tsx b/plugins/app/src/extensions/AppNav.test.tsx
new file mode 100644
index 0000000000..387c75a87a
--- /dev/null
+++ b/plugins/app/src/extensions/AppNav.test.tsx
@@ -0,0 +1,100 @@
+/*
+ * Copyright 2026 The Backstage Authors
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+import { screen, waitFor, within } from '@testing-library/react';
+import { renderTestApp } from '@backstage/frontend-test-utils';
+import {
+  PageBlueprint,
+  NavItemBlueprint,
+  createRouteRef,
+} from '@backstage/frontend-plugin-api';
+
+const DEFAULT_CONFIG = {
+  app: { baseUrl: 'http://localhost:3000' },
+  backend: { baseUrl: 'http://localhost:7007' },
+};
+
+const mockPage = PageBlueprint.make({
+  name: 'my-plugin',
+  params: {
+    title: 'My Plugin',
+    icon: <span>icon</span>,
+    path: '/my-plugin',
+    routeRef: createRouteRef(),
+  },
+});
+
+const mockNavItem = NavItemBlueprint.make({
+  name: 'my-plugin',
+  params: {
+    title: 'My Plugin',
+    icon: () => <span>icon</span>,
+    routeRef: createRouteRef(),
+  },
+});
+
+describe('AppNav', () => {
+  it('should show a nav item for a page with an enabled nav-item extension', async () => {
+    renderTestApp({
+      extensions: [mockPage, mockNavItem],
+      config: DEFAULT_CONFIG,
+    });
+
+    await waitFor(() => {
+      expect(
+        within(screen.getByRole('navigation')).getByText('My Plugin'),
+      ).toBeInTheDocument();
+    });
+  });
+
+  it('should hide a nav item when its nav-item extension is disabled via config', async () => {
+    renderTestApp({
+      extensions: [mockPage, mockNavItem],
+      config: {
+        ...DEFAULT_CONFIG,
+        app: {
+          ...DEFAULT_CONFIG.app,
+          extensions: [{ 'nav-item:test/my-plugin': false }],
+        },
+      },
+    });
+
+    await waitFor(() => {
+      expect(
+        within(screen.getByRole('navigation')).queryByText('My Plugin'),
+      ).not.toBeInTheDocument();
+    });
+  });
+
+  it('should still show a nav item for a page without a nav-item extension', async () => {
+    renderTestApp({
+      extensions: [mockPage],
+      config: {
+        ...DEFAULT_CONFIG,
+        app: {
+          ...DEFAULT_CONFIG.app,
+          extensions: [{ 'nav-item:test/my-plugin': false }],
+        },
+      },
+    });
+
+    await waitFor(() => {
+      expect(
+        within(screen.getByRole('navigation')).getByText('My Plugin'),
+      ).toBeInTheDocument();
+    });
+  });
+});