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SOME/IP Test Traceability Matrix

Overview

This matrix maps individual test cases to specific requirements from the Open SOME/IP Specification, demonstrating comprehensive test coverage.

Test File Structure

  • test_sd.cpp: Service Discovery protocol tests (57 tests)
  • test_serialization.cpp: Data serialization/deserialization tests (37 tests)
  • test_e2e.cpp: End-to-End protection, CRC algorithms, header serialization, MC/DC validation (31 tests)
  • test_message.cpp: Message format and validation tests (27 tests)
  • test_tp.cpp: Transport Protocol segmentation tests (25 tests)
  • test_platform_containers.cpp: Platform container abstractions (21 tests)
  • test_session_manager.cpp: Session lifecycle, expiry, state transitions with MC/DC (19 tests)
  • test_tcp_transport.cpp: TCP transport binding tests (17 tests)
  • test_static_message_pool.cpp: Static message pool allocation (16 tests)
  • test_platform_threading.cpp: Threading, mutex, condition variable primitives (15 tests)
  • test_buffer_pool.cpp: Buffer pool management tests (14 tests)
  • test_static_alloc_integration.cpp: Static allocation integration tests (14 tests)
  • test_events.cpp: Event subscription, notification, and event groups (10 tests)
  • test_udp_transport.cpp: UDP transport binding tests (6 tests)
  • test_etl_error_handler.cpp: ETL error handler tests (4 tests)
  • test_someip_system.cpp: System-level integration tests (4 tests)
  • test_endpoint.cpp: IPv4/IPv6 address validation with MC/DC coverage (1 test)
  • test_pal_freertos_mock.cpp: FreeRTOS PAL conformance (1 test)
  • test_pal_threadx_mock.cpp: ThreadX PAL conformance (1 test)
  • test_pal_zephyr_mock.cpp: Zephyr PAL conformance (1 test)
  • test_pal_static_alloc_mock.cpp: Static allocation PAL conformance (1 test)
  • test_rpc.cpp: RPC request/response handling (1 test)
  • test_freertos_core.cpp: FreeRTOS core platform tests (1 test)
  • test_threadx_core.cpp: ThreadX core platform tests (1 test)

1. MESSAGE FORMAT TEST COVERAGE

Message Construction Tests (test_message.cpp)

Test Case Requirement ID Requirement Description Coverage
MessageTest.Constructor feat_req_someip_538-547 Message header field initialization ✅
MessageTest.CopyConstructor feat_req_someip_548 Message copying semantics ✅
MessageTest.MoveConstructor feat_req_someip_548 Message moving semantics (safety-related) ✅
MessageTest.CopyAndMove feat_req_someip_548 Safety-critical move semantics validation ✅
MessageTest.MessageIdOperations feat_req_someip_538-541 Service ID and Method ID handling ✅
MessageTest.RequestIdOperations feat_req_someip_544-545 Client ID and Session ID handling ✅
MessageTest.MessageTypeValidation feat_req_someip_548-559 All message type validations ✅
MessageTest.ReturnCodeValidation feat_req_someip_549-569 All return code validations ✅
MessageTest.PayloadOperations feat_req_someip_542 Payload size and content handling ✅
MessageTest.HeaderSize feat_req_someip_543 Fixed header size validation (16 bytes) ✅
MessageTest.SerializationRoundTrip feat_req_someip_620-622 Big-endian serialization validation ✅
MessageTest.ValidMessageCheck feat_req_someip_547-549 Message validity checking ✅
MessageTest.InvalidMessageDetection feat_req_someip_569 Malformed message detection ✅

Test File: tests/test_message.cpp Coverage: 23 test cases covering 30+ requirements

2. SERIALIZATION TEST COVERAGE

Data Type Serialization Tests (test_serialization.cpp)

Test Case Requirement ID Requirement Description Coverage
SerializationTest.SerializeDeserializeBool feat_req_someip_600 Boolean serialization round-trip ✅
SerializationTest.SerializeDeserializeUint8 feat_req_someip_601 uint8 big-endian serialization ✅
SerializationTest.SerializeDeserializeUint16 feat_req_someip_602 uint16 big-endian serialization ✅
SerializationTest.SerializeDeserializeUint32 feat_req_someip_603 uint32 big-endian serialization ✅
SerializationTest.SerializeDeserializeUint64 feat_req_someip_604 uint64 big-endian serialization ✅
SerializationTest.SerializeDeserializeInt8 feat_req_someip_605 int8 serialization ✅
SerializationTest.SerializeDeserializeInt16 feat_req_someip_606 int16 big-endian serialization ✅
SerializationTest.SerializeDeserializeInt32 feat_req_someip_607 int32 big-endian serialization ✅
SerializationTest.SerializeDeserializeInt64 feat_req_someip_608 int64 big-endian serialization ✅
SerializationTest.SerializeDeserializeFloat32 feat_req_someip_609 IEEE 754 float32 serialization ✅
SerializationTest.SerializeDeserializeFloat64 feat_req_someip_610 IEEE 754 float64 serialization ✅
SerializationTest.SerializeDeserializeString feat_req_someip_611 UTF-8 string serialization ✅
SerializationTest.SerializeDeserializeArray feat_req_someip_612 Array serialization with length ✅
SerializationTest.SerializeDeserializeStruct feat_req_someip_613 Struct serialization ✅
SerializationTest.EndiannessHandling feat_req_someip_620-622 Platform-independent byte order ✅
SerializationTest.BoundaryConditions feat_req_someip_620-622 Edge case handling ✅

Test File: tests/test_serialization.cpp Coverage: 49 test cases covering all data type requirements

3. SERVICE DISCOVERY TEST COVERAGE

SD Protocol Tests (test_sd.cpp)

Test Case Requirement ID Requirement Description Coverage
SdTest.SdMessageConstruction feat_req_someipsd_100-105 SD message header validation ✅
SdTest.ServiceOfferMessage feat_req_someipsd_201 OfferService entry creation ✅
SdTest.ServiceFindMessage feat_req_someipsd_200 FindService entry creation ✅
SdTest.SubscribeEventgroupMessage feat_req_someipsd_203 SubscribeEventgroup entry creation ✅
SdTest.StopSubscribeEventgroupMessage feat_req_someipsd_204 StopSubscribeEventgroup entry ✅
SdTest.SubscribeEventgroupAckMessage feat_req_someipsd_205 SubscribeEventgroupAck entry ✅
SdTest.SdOptionHandling feat_req_someipsd_300-310 SD option field handling ✅
SdTest.MulticastEndpoint feat_req_someipsd_300-301 Multicast address/port validation ✅
SdTest.RebootFlagHandling feat_req_someipsd_304 Reboot flag processing ✅
SdTest.EntryTypeValidation feat_req_someipsd_200-205 All entry type validations ✅
SdTest.OptionTypeValidation feat_req_someipsd_300-320 SD option type validations ✅
SdTest.MessageSerialization feat_req_someipsd_100-320 Complete SD message serialization ✅
SdTest.ClientServerInteraction feat_req_someipsd_400-450 Client-server SD protocol flow ✅

Test File: tests/test_sd.cpp Coverage: 52 test cases covering SD protocol requirements

4. TRANSPORT PROTOCOL TEST COVERAGE

TP Segmentation Tests (test_tp.cpp)

Test Case Requirement ID Requirement Description Coverage
TpTest.SingleSegmentMessage feat_req_someiptp_400-404 Single segment message handling ✅
TpTest.MultiSegmentMessage feat_req_someiptp_400-404 Multi-segment message segmentation ✅
TpTest.MaxSegmentSizeHandling feat_req_someiptp_403 Segment size limit enforcement ✅
TpTest.MessageReassembly feat_req_someiptp_404 Message reassembly from segments ✅
TpTest.OutOfOrderReassembly feat_req_someiptp_413 Out-of-order segment handling ✅
TpTest.DuplicateSegmentHandling feat_req_someiptp_414 Duplicate segment detection ✅
TpTest.SequenceNumberValidation feat_req_someiptp_402 Sequence number validation ✅
TpTest.OffsetFieldHandling feat_req_someiptp_400 TP offset field processing ✅
TpTest.MoreSegmentsFlag feat_req_someiptp_401 More segments flag handling ✅
TpTest.FirstSegmentHeader feat_req_someiptp_410 First segment header inclusion ✅
TpTest.SubsequentSegments feat_req_someiptp_411 Subsequent segment payload only ✅

Test File: tests/test_tp.cpp Coverage: 23 test cases covering all TP requirements

5. TCP TRANSPORT TEST COVERAGE

TCP Transport Tests (test_tcp_transport.cpp)

Test Case Requirement ID Requirement Description Coverage
TcpTransportTest.Initialization feat_req_someip_850-851 TCP transport initialization ⚠️ (Sandbox fails)
TcpTransportTest.ServerModeSetup feat_req_someip_850-851 Server mode configuration ⚠️ (Sandbox fails)
TcpTransportTest.ClientConnectionTimeout feat_req_someip_851 Connection timeout handling ⚠️ (Sandbox fails)
TcpTransportTest.MessageSerialization feat_req_someip_620-622 TCP message serialization ✅
TcpTransportTest.ListenerCallbacks feat_req_someip_852 Connection event callbacks ⚠️ (Sandbox fails)
TcpTransportTest.ConfigurationValidation feat_req_someip_853 Transport configuration validation ✅
TcpTransportTest.ConnectionStateManagement feat_req_someip_853 Connection state transitions ⚠️ (Sandbox fails)
TcpTransportTest.EndpointValidation feat_req_someip_851 Endpoint validation ⚠️ (Sandbox fails)
TcpTransportTest.TransportLifecycle feat_req_someip_850 Transport start/stop lifecycle ⚠️ (Sandbox fails)
TcpTransportTest.ResourceCleanup feat_req_someip_854 Resource cleanup validation ⚠️ (Sandbox fails)
TcpTransportTest.ConfigurationBoundaryValues feat_req_someip_853 Boundary condition handling ✅

Test File: tests/test_tcp_transport.cpp Coverage: 3/11 tests passing (sandbox limitations), implementation complete

6. SESSION MANAGEMENT TEST COVERAGE

Session Management Tests (test_session_manager.cpp)

Test Case Requirement ID Requirement Description Coverage
SessionManagerTest.SessionIdGeneration feat_req_someip_545 Unique session ID generation ✅
SessionManagerTest.SessionIdUniqueness feat_req_someip_910 Session ID uniqueness guarantee ✅
SessionManagerTest.RequestResponseCorrelation feat_req_someip_911 Request/response correlation ✅
SessionManagerTest.SessionTimeoutHandling feat_req_someip_912 Session timeout management ✅
SessionManagerTest.ConcurrentSessions feat_req_someip_913 Concurrent session handling ✅
SessionManagerTest.SessionCleanup feat_req_someip_912 Session resource cleanup ✅
SessionManagerTest.SessionStateTransitions feat_req_someip_913 Session state management ✅

Test File: tests/test_session_manager.cpp Coverage: 23 test cases covering session management requirements

7. INTEGRATION TEST COVERAGE

Cross-Component Integration Tests

Test Scenario Requirements Covered Test Location Coverage
Message Round-trip feat_req_someip_538-569 examples/simple_message_demo.cpp ✅
RPC Request/Response feat_req_someip_550-553 examples/rpc_*_demo.cpp ✅
SD Service Discovery feat_req_someipsd_100-450 examples/sd_*_demo.cpp ✅
TP Large Message feat_req_someiptp_400-414 examples/tp_example.cpp ✅
TCP Reliable Transport feat_req_someip_850-854 examples/tcp_*_demo.cpp ✅
Event Publish/Subscribe feat_req_someip_552 examples/event_*_demo.cpp ✅

8. TEST COVERAGE METRICS (VALIDATED)

Note: These metrics are produced by scripts/validate_requirements.py. To regenerate, run: cmake --build build --target requirements_check

Methodology: "Fully traced" = requirement has both @implements code annotation and @tests test annotation. "Orphaned" = requirement defined in RST but has no code annotation. Counts reflect the full RST requirement set (669 requirements).

Validated Traceability Summary

Metric Value Status
Total requirements (RST) 669 -
Fully traced (code + tests) 594 (88.8%) Good
Requirements with code refs 596 Good
Requirements with test coverage 662 Good
Orphaned (no code annotation) 73 Needs improvement
Missing spec links 0 Resolved

Test Execution Results (Current Environment)

Test Suite Tests Passing Notes
SD Tests 57 57
Serialization Tests 37 37
E2E Tests 31 31
Message Tests 27 27
TP Tests 25 25
Platform Containers 21 21
Session Manager Tests 19 19
TCP Transport Tests 17 17
Static Message Pool 16 16
Platform Threading 15 15
Buffer Pool Tests 14 14
Static Alloc Integration 14 14
Events Tests 10 10
UDP Transport Tests 6 6
ETL Error Handler 4 4
System Tests 4 4
PAL FreeRTOS Mock 1 1
PAL ThreadX Mock 1 1
PAL Zephyr Mock 1 1
PAL Static Alloc Mock 1 1
RPC Tests 1 1

9. COVERAGE GAPS & RECOMMENDATIONS

Remaining Gaps

  • Annotation gap: 73 requirements have no @implements annotation in code. Many are likely implemented but unannotated.
  • Test annotation gap: 7 requirements have no @tests annotation (REQ_PAL_MEM_THREADSAFE_E01, REQ_PAL_CONTAINER_CAPACITY_E01, REQ_PAL_BUFPOOL_THREADSAFE_E01, REQ_PAL_STATIC_CONFIG, REQ_PLATFORM_STATIC_001, REQ_PLATFORM_STATIC_005, REQ_ARCH_008).

Recommended Improvements

  1. Add @implements annotations to the 73 unannotated requirements
  2. Add @tests annotations for the 7 remaining untested requirements
  3. Implement remaining serialization requirements (REQ_SER_090-107)
  4. Performance, stress, and fault-injection testing
  5. Cross-platform and fuzzing tests

10. TRACEABILITY VERIFICATION (VALIDATED)

Requirements - Implementation - Tests

Traceability Level Validated Method
Requirements with code refs 596/669 extract_code_requirements.py
Requirements with test refs 662/669 extract_code_requirements.py
Fully traced (code + tests) 88.8% (594/669) validate_requirements.py
Spec-linked implementation reqs 669/669 validate_requirements.py

This test traceability matrix is validated against the automated extraction scripts. Numbers reflect @tests and @test_case annotations found in test source files.