AI Implementation feature(857): Authenticated Shell: Header, Quick Tabs and Change Password (#14)

tests/frontend/shell-active-section.spec.ts

@@ -0,0 +1,29 @@
+import { deriveActiveSectionFromUrl } from '../../frontend/src/app/features/home/home.shell';
+
+describe('deriveActiveSectionFromUrl', () => {
+  it('returns Scoreboard for /scoreboard', () => {
+    expect(deriveActiveSectionFromUrl('/scoreboard')).toBe('Scoreboard');
+  });
+
+  it('returns Blog for /blog', () => {
+    expect(deriveActiveSectionFromUrl('/blog')).toBe('Blog');
+  });
+
+  it('returns Admin for /admin', () => {
+    expect(deriveActiveSectionFromUrl('/admin')).toBe('Admin');
+  });
+
+  it('returns Challenges for / or /challenges', () => {
+    expect(deriveActiveSectionFromUrl('/')).toBe('Challenges');
+    expect(deriveActiveSectionFromUrl('/challenges')).toBe('Challenges');
+  });
+
+  it('ignores query string and hash', () => {
+    expect(deriveActiveSectionFromUrl('/scoreboard?x=1')).toBe('Scoreboard');
+    expect(deriveActiveSectionFromUrl('/blog#top')).toBe('Blog');
+  });
+
+  it('falls back to Challenges for empty url', () => {
+    expect(deriveActiveSectionFromUrl('')).toBe('Challenges');
+  });
+});