Session 24: Connect everything — Slate wired to all sources, copy fixed, nav fixed, startup prefetch, language button removed (1571 tests)

tests/unit/startupPrefetch.test.js

@@ -0,0 +1,48 @@
+// Unit: startup prefetch (Session 24). Must be non-blocking and crash-safe.
+
+jest.mock('../../scripts/tank01-prefetch', () => ({
+  main: jest.fn(),
+}));
+const prefetch = require('../../scripts/tank01-prefetch');
+const { runStartupPrefetch, scheduleStartupPrefetch } = require('../../src/startupPrefetch');
+
+const savedKey = process.env.RAPID_API_KEY;
+afterAll(() => {
+  if (savedKey === undefined) delete process.env.RAPID_API_KEY;
+  else process.env.RAPID_API_KEY = savedKey;
+});
+
+beforeEach(() => jest.clearAllMocks());
+
+describe('runStartupPrefetch', () => {
+  test('skips (returns null) when RAPID_API_KEY is unset', async () => {
+    delete process.env.RAPID_API_KEY;
+    const result = await runStartupPrefetch();
+    expect(result).toBeNull();
+    expect(prefetch.main).not.toHaveBeenCalled();
+  });
+
+  test('runs the prefetch with sports + max budget when key is set', async () => {
+    process.env.RAPID_API_KEY = 'test-key';
+    prefetch.main.mockResolvedValue({ requestsSpent: 12 });
+    const result = await runStartupPrefetch({ sports: ['nba', 'mlb'], maxRequests: 40 });
+    expect(result).toEqual({ requestsSpent: 12 });
+    const argv = prefetch.main.mock.calls[0][0];
+    expect(argv).toEqual(expect.arrayContaining(['--sports=nba,mlb', '--max=40']));
+  });
+
+  test('prefetch failure resolves to null — never throws (server stays up)', async () => {
+    process.env.RAPID_API_KEY = 'test-key';
+    prefetch.main.mockRejectedValue(new Error('rapidapi 503'));
+    await expect(runStartupPrefetch()).resolves.toBeNull();
+  });
+});
+
+describe('scheduleStartupPrefetch', () => {
+  test('returns an unref-able timer and does not run synchronously', () => {
+    process.env.RAPID_API_KEY = 'test-key';
+    const timer = scheduleStartupPrefetch({ delayMs: 10_000 });
+    expect(prefetch.main).not.toHaveBeenCalled(); // deferred, not immediate
+    clearTimeout(timer);
+  });
+});