Root causes:
1. TermsGate (rendered inside OrgsPage Shell) fetches /cp/auth/terms-status
before OrgsPage fetches /cp/orgs, consuming the first mockResponseOnce
slot — leaving /cp/orgs with no mock and throwing TypeError.
Fix: mock TermsGate as a pass-through component in vi.mock.
2. Non-polling tests used mockFetchSession.mockResolvedValueOnce() which
exhausted after one call; React 18 concurrent re-renders call
fetchSession() multiple times, causing subsequent calls to return
undefined. Fix: use mockResolvedValue() (persistent) for fetchSession.
3. vi.clearAllMocks() in beforeEach kept mockResolvedValueOnce from
previous tests from leaking BUT the vi.fn() mock implementation was
already reset by mockFetchSession.mockReset() in beforeEach. Tests
were passing stale persistent mocks from previous tests. Fix:
mockFetchSession.mockReset() in beforeEach + mockResolvedValue in
each test.
4. Polling tests used vi.useFakeTimers() without shouldAdvanceTime,
which prevented React's useEffect from calling fetch() (0 calls).
Fix: use vi.useFakeTimers({ shouldAdvanceTime: true }) + await
vi.advanceTimersByTimeAsync() to advance time during await.
5. Unmount test unmounted before effects fired (with shouldAdvanceTime).
Fix: flush microtasks with await vi.advanceTimersByTimeAsync(0)
before unmount so the effect runs and schedules the poll timer.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Molecule AI Core-FE
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