Node 22 URL.createObjectURL strictly requires a native node:buffer Blob
and throws ERR_INVALID_ARG_TYPE when given a jsdom Blob (caught by
fetchImageAsBlob, returning ''). Node 24 relaxed this check, masking the
failure locally.
Tests 007, 011: replace MSW/Response-based fetch mocks with direct
vi.spyOn(fetch) mocks returning node:buffer Blobs via a duck-typed
response object. The real URL.createObjectURL now handles the correct
Blob type and returns a genuine blob: URL on all Node versions.
Test 012: URL.createObjectURL identity varies across Node versions
making it impossible to spy on reliably. Replace createObjectURLSpy
assertion with a completedFetches counter in the fetch mock, which
proves the same semantic guarantee (6 requests ran, 7th was cleared).
setup.ts: restore the original conditional guard so the vi.fn fallback
only applies when URL.createObjectURL is completely absent, not
overwriting a working real implementation.
In jsdom, source modules resolve bare 'URL' identifiers through
window.URL (the jsdom window object), not through globalThis.URL (Node's
URL class). On GitHub Actions these are distinct objects, so all prior
attempts (Object.defineProperty, direct assignment, vi.stubGlobal) were
patching the wrong object and failing silently.
Changes:
- setup.ts: Object.defineProperty targets window.URL so the vi.fn mock
is visible to authUrl.ts at call time
- authUrl.test.ts: drop vi.stubGlobal approach; add vi.clearAllMocks()
to reset accumulated call counts on the setup.ts vi.fn between tests;
fix vi.spyOn target to window.URL in test 012
Three interrelated issues caused 4 tests to pass locally but fail on CI:
1. setup.ts only applied the URL.createObjectURL stub when it was
undefined, but jsdom already defines it (returning ''). Changed to
always override with configurable:true so the predictable 'blob:mock'
value is set in every environment.
2. FE-API-013 used Object.defineProperty (non-configurable in jsdom) and
MSW to handle a native fetch call. Replaced with vi.spyOn for both
URL.createObjectURL/revokeObjectURL and a direct fetch mock, which is
more reliable across environments.
3. FE-COMP-AUTHURL-012's vi.spyOn(URL, 'createObjectURL') returned the
same vi.fn() instance set in setup.ts, accumulating calls from all
prior tests in the file (1+8+7+6=22 instead of 6). Added mockClear()
immediately after the spy setup to reset the count.
jubnl