Add tests for cache-control setting

ws-nextjs-app/pages/[service]/av-embeds/handleAvRoute.test.ts

@@ -0,0 +1,53 @@
+import { GetServerSidePropsContext } from 'next';
+import handleAvRoute from './handleAvRoute';
+
+const mockGetServerSidePropsContext = {
+  req: {
+    cookies: {},
+    headers: {},
+  },
+  res: {
+    setHeader: jest.fn(),
+  },
+  query: {
+    service: 'news',
+  },
+} as unknown as GetServerSidePropsContext;
+
+describe('Handle AV Route', () => {
+  beforeEach(() => {
+    jest.clearAllMocks();
+  });
+
+  it('should set the cache control header correctly for a Syndication route', async () => {
+    const { req, res, query } = mockGetServerSidePropsContext;
+
+    await handleAvRoute({
+      req,
+      res,
+      resolvedUrl: '/news/av-embeds/123',
+      query,
+    });
+
+    expect(mockGetServerSidePropsContext.res.setHeader).toHaveBeenCalledWith(
+      'Cache-Control',
+      'private, stale-if-error=90, stale-while-revalidate=30, max-age=0, must-revalidate',
+    );
+  });
+
+  it('should set the cache control header correctly for a non-Syndication route', async () => {
+    const { req, res, query } = mockGetServerSidePropsContext;
+
+    await handleAvRoute({
+      req,
+      res,
+      resolvedUrl: '/ws/av-embeds/123',
+      query,
+    });
+
+    expect(mockGetServerSidePropsContext.res.setHeader).toHaveBeenCalledWith(
+      'Cache-Control',
+      'public, stale-if-error=90, stale-while-revalidate=30, max-age=30',
+    );
+  });
+});