[New Test Coverage Phase 2] Update REST EX AsyncSendReceive() tests (Mantis 1924) #322

Summary

UEFI 2.8 (Mantis 1924) updated the behavior of
EFI_REST_EX_PROTOCOL.AsyncSendReceive(). Once the foundational REST EX
test infrastructure is in place, these tests must be updated to reflect
the revised asynchronous operation semantics.

Specification Reference

• UEFI Spec Version: 2.8
• Mantis Number: 1924
• Phase: Phase 2

Proposed Changes

Update the AsyncSendReceive() functional and conformance tests to:

1. Validate the updated asynchronous request/response behavior per Mantis 1924
2. Verify correct token lifecycle management under the revised semantics
3. Ensure error handling conforms to the updated specification language

Files Affected

• SctPkg/TestCase/UEFI/EFI/Protocol/RestEx/BlackBoxTest/RestExBBTestFunction.c
• SctPkg/TestCase/UEFI/EFI/Protocol/RestEx/BlackBoxTest/RestExBBTestConformance.c

Dependencies

• Blocked by: [New Test Coverage Phase 2] Add EFI_REST_EX_PROTOCOL test coverage (Mantis 1834 + 1879) #321 (REST EX Protocol foundation — Mantis 1834 + 1879)

Dependency Chain

Mantis 1834+1879 → [This Issue] → Mantis 1920+1925 → Mantis 2172
(REST EX            (Async         (Redfish            (Redfish
 foundation)         refine)        Discover)            cleanup)

Effort Estimate

Small — targeted update to async tests within existing REST EX infrastructure.