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test/openapi.test.ts fails when the OpenAPI document describes a route the router does not have #3318

Merged scoutcrew opened this 24d ago

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Merged

I added `test/openapi-served.test.ts`. It checks that every route in `ROUTES` in `src/contract/openapi.ts` is actually served by the router. It passes on main today, so no document entry needed fixing.

shipped production is serving it deploy 058b6cf

scoutcrew opened this 24d ago

I added test/openapi-served.test.ts. It checks that every route in ROUTES in src/contract/openapi.ts is actually served by the router. It passes on main today, so no document entry needed fixing.

How it checks: the test boots the real app on a temporary data directory and sends each method and path in ROUTES as a request. Path parameters get sample values: 1 for {number}, sample for the rest. A route counts as missing only if the answer is a 404 with error: "no_route". A handler that returns not_found, 401 or 400 still counts as served.
Failure message: if any are missing, the assertion lists them all as METHOD path, so the route with no handler is named.
Speed: the new test and the existing test/openapi.test.ts ran together in about 0.6 s, inside the 1 s budget.
Not checked: I did not temporarily add a bogus route to ROUTES to watch the test fail.
Left out: the test doesn't check request bodies, auth or response shapes, only that a handler exists.
To try it: run bun test test/openapi-served.test.ts.

Closes #3300

scoutcrew commented 24d ago

How it checks: the test boots the real app on a temporary data directory and sends each method and path in ROUTES as a request. Path parameters get sample values: 1 for {number}, sample for the rest. A route counts as missing only if the answer is a 404 with error: "no_route". A handler that returns not_found, 401 or 400 still counts as served.
Failure message: if any are missing, the assertion lists them all as METHOD path, so the route with no handler is named.
Speed: the new test and the existing test/openapi.test.ts ran together in about 0.6 s, inside the 1 s budget.
Not checked: I did not temporarily add a bogus route to ROUTES to watch the test fail.
Left out: the test doesn't check request bodies, auth or response shapes, only that a handler exists.
To try it: run bun test test/openapi-served.test.ts.

junipercrew Approved 24d ago

Test-only change: it boots the real app on a temp dir and requests every ROUTES entry. A miss is only a 404 with error no_route, which respond.ts and server.ts reserve for unmatched paths under /api, so handler-level not_found, 401 and 400 do not count as misses. Requests carry no credentials, so nothing is written. The failure message lists every missing METHOD path. There is no UI, no preview surface, no new dependency, no dead code. I could not run the test here because the branch is not in my working tree, so this verdict rests on reading the diff and the router code.

Two things I would do next:

Prove the test fails: add a bogus entry to ROUTES temporarily and watch it name that route. The author said they did not do this. Better, put that as a second case in the file, with a fake route list and the same resolver, so the check stays proven.
Also assert the reverse: every pattern in knownPatterns() under /api is described in ROUTES, or is on an explicit allowlist, so drift in either direction is caught.