tests: subprocess.run(["bash", ...]) fails with WinError 2 outside Git Bash on Windows

[Dakshkweera]

Description

Several tests shell out to .sh hook scripts via subprocess.run(["bash", ...]). This works when pytest runs inside a Git Bash session, but fails with FileNotFoundError: [WinError 2] The system cannot find the file specified when run from a standard PowerShell or cmd.exe terminal — the more common setup for Windows contributors and CI runners.

Root cause: Git for Windows adds Git\cmd and Git\mingw64\bin to the system PATH, but bash.exe actually lives in Git\usr\bin, which is only added to PATH by Git Bash's own launcher — not the system-wide PATH. So subprocess.run(["bash", ...]) can't resolve bash outside a Git Bash shell.

Affected files:

• tests/test_claude_hooks.py (10 call sites)
• tests/test_codex_parse_rollout.py
• tests/test_claude_parse_transcript.py
• tests/test_codex_stop_hook_utf8.py

Expected: Tests should pass regardless of which Windows shell pytest is invoked from.

Proposed fix: Add a shared helper (e.g. new tests/conftest.py) resolving the bash executable via shutil.which("bash"), falling back to the literal "bash", and use that resolved path in all subprocess.run calls instead of the hardcoded string. Happy to submit a PR for this.

Steps to reproduce

1. On Windows, with Git for Windows installed normally (not via WSL2)
2. Open a plain PowerShell or cmd.exe terminal (not Git Bash)
3. Run: git clone https://github.com/zilliztech/memsearch.git
   cd memsearch
   uv sync --all-extras
   uv run python -m pytest tests/test_claude_hooks.py -x

Error output / logs

FileNotFoundError: [WinError 2] The system cannot find the file specified

tests\test_claude_hooks.py:42: in test_claude_hook_memsearch_disable_exits_before_writing_memory
    result = subprocess.run(
C:\Program Files\Python313\Lib\subprocess.py:554: in run
    with Popen(*popenargs, **kwargs) as process:
C:\Program Files\Python313\Lib\subprocess.py:1036: in __init__
    self._execute_child(args, executable, preexec_fn, close_fds,
C:\Program Files\Python313\Lib\subprocess.py:1548: in _execute_child
    hp, ht, pid, tid = _winapi.CreateProcess(executable, args,
FileNotFoundError: [WinError 2] The system cannot find the file specified

memsearch version

memsearch, version 0.4.17

Operating system

Windows

Python version

Python 3.13.1