docs/a2a-protocol/TEST_RESULTS.md - eventmesh - Git at Google

 # Test Results: EventMesh A2A Protocol v2.0

 **Date**: 2025-12-08
 **Version**: v2.0.0 (MCP Edition)
 **Status**: ✅ **PASS**

 ## Test Suite Summary

 The test suite provides comprehensive coverage across two protocols (JSON-RPC 2.0 & Native CloudEvents) and three interaction patterns (RPC, Pub/Sub, Streaming).

 | Test Class | Scenarios | Result | Description |
 | :--- | :--- | :--- | :--- |
 | `EnhancedA2AProtocolAdaptorTest` | 12 | **PASS** | Unit tests covering core protocol logic, MCP parsing, Batching, Error handling, and A2A Standard Ops. |
 | `McpIntegrationDemoTest` | 1 | **PASS** | End-to-end RPC demo using MCP (JSON-RPC). |
 | `McpPatternsIntegrationTest` | 2 | **PASS** | End-to-end Pub/Sub and Streaming demos using MCP (JSON-RPC). |
 | `McpComprehensiveDemoTest` | 3 | **PASS** | Validation of all 3 patterns in MCP mode. |
 | `CloudEventsComprehensiveDemoTest` | 3 | **PASS** | Validation of all 3 patterns in Native CloudEvents mode. |

 **Total Scenarios**: 21 (All Passed)

 ## Detailed Test Cases

 ### 1. `EnhancedA2AProtocolAdaptorTest` (Unit)
 - **MCP Core**: Validated Request/Response/Notification mapping.
 - **Error Handling**: Validated JSON-RPC Error object mapping.
 - **Batching**: Validated JSON Array splitting.
 - **Legacy Removal**: Confirmed legacy A2A format is no longer processed.
 - **A2A Ops**: Verified `task/get`, `message/sendStream` mappings.

 ### 2. `McpIntegrationDemoTest` (Integration - RPC)
 - Simulated Client -> EventMesh -> Server flow.
 - Verified correlation ID linking (`req-id` <-> `collaborationid`).

 ### 3. `McpPatternsIntegrationTest` (Integration - Advanced)
 - **Pub/Sub**: Verified `_topic` -> `subject` mapping for Broadcast.
 - **Streaming**: Verified `_seq` -> `seq` mapping for ordered chunks.

 ### 4. `McpComprehensiveDemoTest` (Protocol: JSON-RPC)
 - **RPC**: Request/Response flow verification.
 - **Pub/Sub**: Broadcast to Topic routing verification.
 - **Streaming**: Sequence ID preservation verification.

 ### 5. `CloudEventsComprehensiveDemoTest` (Protocol: Native CloudEvents)
 - **RPC**: Verified manual construction of `.req` / `.resp` CloudEvents works.
 - **Pub/Sub**: Verified manual setting of `subject` works.
 - **Streaming**: Verified manual setting of `seq` extension works.

 ## Environment

 - **JDK**: Java 8 (Source/Target 1.8), Compatible with Java 21 Runtime
 - **Build System**: Gradle 7.x+
 - **Dependencies**: Jackson 2.18+, CloudEvents SDK 3.0+

 ## Conclusion

 The A2A Protocol v2.0 implementation is stable, functionally complete, and ready for production deployment. It successfully supports the **Hybrid Architecture** (MCP & CloudEvents) and all three interaction patterns (RPC, Pub/Sub, Streaming) on the EventMesh runtime.
	# Test Results: EventMesh A2A Protocol v2.0

	Date: 2025-12-08
	Version: v2.0.0 (MCP Edition)
	Status: ✅ PASS

	## Test Suite Summary

	The test suite provides comprehensive coverage across two protocols (JSON-RPC 2.0 & Native CloudEvents) and three interaction patterns (RPC, Pub/Sub, Streaming).

	\| Test Class \| Scenarios \| Result \| Description \|
	\| :--- \| :--- \| :--- \| :--- \|
	\| `EnhancedA2AProtocolAdaptorTest` \| 12 \| PASS \| Unit tests covering core protocol logic, MCP parsing, Batching, Error handling, and A2A Standard Ops. \|
	\| `McpIntegrationDemoTest` \| 1 \| PASS \| End-to-end RPC demo using MCP (JSON-RPC). \|
	\| `McpPatternsIntegrationTest` \| 2 \| PASS \| End-to-end Pub/Sub and Streaming demos using MCP (JSON-RPC). \|
	\| `McpComprehensiveDemoTest` \| 3 \| PASS \| Validation of all 3 patterns in MCP mode. \|
	\| `CloudEventsComprehensiveDemoTest` \| 3 \| PASS \| Validation of all 3 patterns in Native CloudEvents mode. \|

	Total Scenarios: 21 (All Passed)

	## Detailed Test Cases

	### 1. `EnhancedA2AProtocolAdaptorTest` (Unit)
	- MCP Core: Validated Request/Response/Notification mapping.
	- Error Handling: Validated JSON-RPC Error object mapping.
	- Batching: Validated JSON Array splitting.
	- Legacy Removal: Confirmed legacy A2A format is no longer processed.
	- A2A Ops: Verified `task/get`, `message/sendStream` mappings.

	### 2. `McpIntegrationDemoTest` (Integration - RPC)
	- Simulated Client -> EventMesh -> Server flow.
	- Verified correlation ID linking (`req-id` <-> `collaborationid`).

	### 3. `McpPatternsIntegrationTest` (Integration - Advanced)
	- Pub/Sub: Verified `_topic` -> `subject` mapping for Broadcast.
	- Streaming: Verified `_seq` -> `seq` mapping for ordered chunks.

	### 4. `McpComprehensiveDemoTest` (Protocol: JSON-RPC)
	- RPC: Request/Response flow verification.
	- Pub/Sub: Broadcast to Topic routing verification.
	- Streaming: Sequence ID preservation verification.

	### 5. `CloudEventsComprehensiveDemoTest` (Protocol: Native CloudEvents)
	- RPC: Verified manual construction of `.req` / `.resp` CloudEvents works.
	- Pub/Sub: Verified manual setting of `subject` works.
	- Streaming: Verified manual setting of `seq` extension works.

	## Environment

	- JDK: Java 8 (Source/Target 1.8), Compatible with Java 21 Runtime
	- Build System: Gradle 7.x+
	- Dependencies: Jackson 2.18+, CloudEvents SDK 3.0+

	## Conclusion

	The A2A Protocol v2.0 implementation is stable, functionally complete, and ready for production deployment. It successfully supports the Hybrid Architecture (MCP & CloudEvents) and all three interaction patterns (RPC, Pub/Sub, Streaming) on the EventMesh runtime.