37db58b816
- PEM→DER round-trip identity test (re-parses DER base64 → verify CN) - DER→PEM round-trip identity test (re-parses PEM base64 → verify CN) - PEM→P7B: asserts mimeType + P7B contains ≥1 cert - malformed input: expects BadRequestException - All 4 fail against NotImplementedException stub (RED confirmed)