ApiKeyService had zero coverage despite real logic (key generation,
hashing, org-scoped revoke). Also filled branch gaps in AuthService
(logout with unknown token) and the auth handlers (empty header
values).
ApiKeyEndpoints/AuthEndpoints are marked [ExcludeFromCodeCoverage]:
they're minimal-API route registration that needs a live HTTP
pipeline to exercise, which CLAUDE.md disallows (no
WebApplicationFactory/InMemory). Their branch logic is already
covered via the underlying service unit tests.
Raises the namespace from 66% to 91%. Remaining gap is plain
positional records with no logic (LoginRequest, PagedResult, etc.) -
left untested per CLAUDE.md's guidance against coverage-only tests.
## Summary
- Extract `IMicCheckDbContext` and mock DB access with Moq instead of the EF InMemory provider, per CLAUDE.md testing guidelines.
- Rewrite HTTP-pipeline tests to exercise controllers/auth handlers directly instead of `WebApplicationFactory`.
- Remove tuple return types across the API in favor of named records (`PagedResult<T>`, `ProfileUpdateResult`, `ApiKeyCreationResult`).
## Test plan
- [x] `dotnet build` (full solution)
- [x] `dotnet test tests/api/MicCheck.Api.Tests.Unit` — 187/187 pass
- [x] `dotnet test tests/api/MicCheck.Api.Tests.Integration` — 8/8 pass (live API + Postgres via Aspire)
- [x] Verified Aspire AppHost/dashboard starts and API responds
Reviewed-on: #4
