---
phase: 07-integration-and-end-to-end-validation
plan: 01
subsystem: testing
tags: [integration-tests, task-prompt-bridge, workflow, bug-fix, backward-compatibility]

# Dependency graph
requires:
  - phase: 04-task-aware-prompt-handler
    provides: TaskWorkflowPromptHandler, _meta field on GetPromptResult
  - phase: 05-partial-execution-engine
    provides: PauseReason variants, step status tracking, data dependency resolution
  - phase: 06-structured-handoff-and-client-continuation
    provides: Handoff message generation, client continuation via _task_id, cancel-with-result
provides:
  - Fixed task_id extraction from CreateTaskResult JSON (was always returning None)
  - Integration tests validating builder API wiring for task-aware workflows (INTG-01)
  - Backward compatibility tests proving non-task workflows are unaffected (INTG-02)
  - Full lifecycle integration tests through ServerCore::handle_request (INTG-04)
  - Cancel-with-result integration test (INTG-04)
affects: [07-02, examples, documentation]

# Tech tracking
tech-stack:
  added: []
  patterns: [handler-level integration testing via ServerCore::handle_request, dual-workflow registration pattern]

key-files:
  created:
    - crates/pmcp-tasks/tests/workflow_integration.rs
  modified:
    - src/server/workflow/task_prompt_handler.rs

key-decisions:
  - "Fix task_id extraction as first task since entire lifecycle depends on it"
  - "Use failing tool variant to trigger handoff for lifecycle test coverage"
  - "Handler-level testing via ServerCore::handle_request (not transport layer)"

patterns-established:
  - "Dual-workflow registration: task + non-task workflows on same server for backward compatibility validation"
  - "Failing tool variant pattern: separate tool struct that always returns Err for error-path testing"

requirements-completed: [INTG-01, INTG-02, INTG-04]

# Metrics
duration: 5min
completed: 2026-02-23
---

# Phase 7 Plan 01: Task-Prompt Bridge Integration Summary

**Fixed task_id extraction bug in TaskWorkflowPromptHandler and validated full lifecycle with 6 integration tests covering builder API wiring, backward compatibility, handoff, continuation, and cancel-with-result**

## Performance

- **Duration:** 5 min
- **Started:** 2026-02-23T16:39:35Z
- **Completed:** 2026-02-23T16:44:13Z
- **Tasks:** 2
- **Files modified:** 2

## Accomplishments
- Fixed critical bug where task_id extraction always returned None, causing all task-aware workflows to fall through to graceful degradation
- Validated that non-task workflows on the same server return standard GetPromptResult without _meta (INTG-02)
- Proved builder API wiring: with_task_store + prompt_workflow correctly creates task-aware handlers (INTG-01)
- Tested full create-execute-handoff-continue-complete lifecycle through real ServerCore (INTG-04)
- Verified cancel-with-result transitions to Completed status (INTG-04)

## Task Commits

Each task was committed atomically:

1. **Task 1: Fix task_id extraction bug in TaskWorkflowPromptHandler** - `046d51d` (fix)
2. **Task 2: Create workflow integration tests** - `e605840` (feat)

## Files Created/Modified
- `src/server/workflow/task_prompt_handler.rs` - Fixed task_id extraction from CreateTaskResult JSON (value.get("id") -> value.get("task").and_then(|t| t.get("taskId")))
- `crates/pmcp-tasks/tests/workflow_integration.rs` - 6 integration tests: backward compatibility, task workflow with _meta, full lifecycle, cancel-with-result, dual workflow coexistence, continuation with _task_id

## Decisions Made
- Fixed the task_id extraction bug as the first task since the entire task-prompt bridge lifecycle depended on it working correctly
- Used a separate FailingFetchDataTool struct to trigger handoff scenarios rather than runtime configuration, matching the existing tool handler pattern
- Interpreted "handler-level tests" from CONTEXT.md as ServerCore::handle_request (no transport) since that exercises the full builder wiring

## Deviations from Plan

None - plan executed exactly as written.

## Issues Encountered
- Pre-existing clippy warning in `crates/pmcp-tasks/src/router.rs:554` (unnecessary `get().is_none()` pattern) detected during `cargo clippy --package pmcp-tasks --tests`. This is out of scope for this plan as it exists in pre-existing code not modified by this plan.

## User Setup Required

None - no external service configuration required.

## Next Phase Readiness
- The task_id extraction fix unblocks the full lifecycle example (07-02-PLAN.md)
- Integration tests provide a safety net for any future changes to the task-prompt bridge
- All existing lifecycle_integration.rs tests continue to pass (11/11)

## Self-Check: PASSED

All files exist, all commits verified:
- FOUND: src/server/workflow/task_prompt_handler.rs
- FOUND: crates/pmcp-tasks/tests/workflow_integration.rs
- FOUND: commit 046d51d (task 1)
- FOUND: commit e605840 (task 2)
- FOUND: 07-01-SUMMARY.md

---
*Phase: 07-integration-and-end-to-end-validation*
*Completed: 2026-02-23*
