# Request Validation Review Findings

Reviewed commits `f315620`, `f3148bf`, and `60784e7` against the finalized
[feature roadmap](validate.md) and [implementation plan](implementation.md).

## 1. Reuse The Existing Preparation-Parity Test Helper

Priority: P3 (test maintainability). Status: complete.

At reviewed commit `60784e7`, in
[validate_request_contract_test.go](../../validate_request_contract_test.go),
`TestValidateRequestMatchesPrepareContract` defines a local `testParity` closure
at lines 25–45 that duplicates the package-level
`assertValidateRequestParity` helper at lines 87–108. Both invoke `Prepare` and
`ValidateRequest` and assert the same success/result and public-error behavior;
the package-level helper additionally returns the successful prepared value.
The nil-engine subtest repeats the same failure assertions again.

Retaining separate copies makes future parity-assertion improvements require
multiple edits and increases the risk that related tests diverge unnecessarily.
This is a small cleanup, not a demonstrated functional or release-blocking bug.

### Requested Remediation

- Replace calls to the local closure with `assertValidateRequestParity` and
  remove the redundant closure.
- Reuse that helper for the nil-engine subtest as well; retain its
  `ErrInvalidConfig` expectation.
- Preserve all existing cases, public-error assertions, and no-model-call
  checks. No production or public-contract changes are needed.

Verify with `go test -race . -run '^TestValidateRequest'` and
`git diff --check`, formatting the changed Go file.

### Completion

Removed the local closure and reused `assertValidateRequestParity` for all four
cases, including the nil-engine `ErrInvalidConfig` expectation. Existing cases,
public-error assertions, and no-model-call checks are preserved; production code
and public contracts are unchanged.

Formatted the Go file. The uncached, race-enabled `TestValidateRequest` tests
and `git diff --check` passed.

## Review Outcome

The public method and shared facade helper match the intended architecture.
No implementation gaps or unintended strengthening of contracts were found.
The uncached full race-enabled suite, vet, maintained consumer examples, and
implementation diff whitespace checks passed during review.