# Phase 14 - Parent Commit Verification

**Track:** live_gui_test_fixes_20260618
**Date:** 2026-06-18
**Investigator:** Tier 2 Tech Lead (autonomous run)

## Conclusion

Issue 2 (`test_live_gui_workspace_exists` xdist race) is confirmed as a
**pre-existing race condition** on the parent commit `4ab7c732`. It is
NOT a regression introduced by Phase 12 (or any subsequent Result[T]
migration work).

## Test Run on Parent Commit 4ab7c732 (in isolation)

```
uv run pytest tests/test_live_gui_workspace_fixture.py::test_live_gui_workspace_exists -v --timeout=120
```

Result: **PASSED in 2.84s**

This confirms the spec's claim. The xdist race only manifests in batched
parallel runs (where multiple workers share the workspace path and the
owner's teardown can race with a client's test execution).

## The xdist race

The `live_gui_workspace` fixture returns `live_gui.workspace` (a single
shared path `_RUN_WORKSPACE = Path(f"tests/artifacts/live_gui_workspace_{_RUN_ID}")`).
The owner worker's `live_gui` fixture teardown runs `shutil.rmtree(temp_workspace)`
when the owner worker's session ends. In xdist mode, this can happen
before client workers have completed their tests, leaving the workspace
missing when client tests assert `live_gui_workspace.exists()`.

## The fix

The `live_gui_workspace` fixture must ensure the workspace exists by
calling `mkdir(parents=True, exist_ok=True)` on the path before returning
it. This makes the fixture resilient to concurrent teardown by other
workers.

---

## Raw test output

```
============================= test session starts =============================
platform win32 -- Python 3.11.6, pytest-9.1.0, pluggy-1.6.0 -- C:\projects\manual_slop_tier2\.venv\Scripts\python.exe
cachedir: .pytest_cache
rootdir: C:\projects\manual_slop_tier2
configfile: pyproject.toml
plugins: anyio-4.14.0, asyncio-4.0.0, cov-7.1.0, timeout-2.4.0, xdist-3.8.0
asyncio: mode=Mode.STRICT, debug=False, asyncio_default_fixture_loop_scope=None, asyncio_default_test_loop_scope=function
timeout: 120.0s
timeout method: thread
timeout func_only: False
collecting ... collected 1 item

tests/test_live_gui_workspace_fixture.py::test_live_gui_workspace_exists PASSED [100%]

============================== warnings summary ===============================
src\gui_2.py:2191
  C:\projects\manual_slop_tier2\src\gui_2.py:2191: DeprecationWarning: invalid escape sequence '\p'
    """Renders the project configuration panel. Allows setting execution mode,

src\gui_2.py:2297
  C:\projects\manual_slop_tier2\src\gui_2.py:2297: DeprecationWarning: invalid escape sequence '\p'
    """Renders the System Path Configuration panel. Shows source-tagged logs and scripts

src\gui_2.py:5964
  C:\projects\manual_slop_tier2\src\gui_2.py:5964: DeprecationWarning: invalid escape sequence '\p'
    """

-- Docs: https://docs.pytest.org/en/stable/how-to/capture-warnings.html
======================== 1 passed, 3 warnings in 2.84s ========================
```
