From a916bf9d660cd704ea9f0d58ca2af4ec7b98be6b Mon Sep 17 00:00:00 2001
From: Gracy769 <169199616+Gracy769@users.noreply.github.com>
Date: Tue, 1 Sep 2026 13:54:53 +0530
Subject: [PATCH] perf(test): cache bash probe resolution per session with
 functools.lru_cache

---
 tests/test_pre_push_hook_contract.py |  3 +++
 tests/test_roadmap_helpers.py        | 10 +++++-----
 2 files changed, 8 insertions(+), 5 deletions(-)

diff --git a/tests/test_pre_push_hook_contract.py b/tests/test_pre_push_hook_contract.py
index 0cc1f287..a9ef026a 100644
--- a/tests/test_pre_push_hook_contract.py
+++ b/tests/test_pre_push_hook_contract.py
@@ -1,3 +1,4 @@
+import functools
 import os
 import shutil
 import subprocess
@@ -5,6 +6,7 @@ import unittest
 from pathlib import Path
 
 
+@functools.lru_cache(maxsize=1)
 def get_bash_executable() -> str | None:
     if os.name == 'nt':
         for candidate in (
@@ -21,6 +23,7 @@ def get_bash_executable() -> str | None:
     return None
 
 
+@functools.lru_cache(maxsize=1)
 def require_bash() -> bool:
     bash = get_bash_executable()
     if not bash:
diff --git a/tests/test_roadmap_helpers.py b/tests/test_roadmap_helpers.py
index 3b376357..f7307c71 100644
--- a/tests/test_roadmap_helpers.py
+++ b/tests/test_roadmap_helpers.py
@@ -1,7 +1,10 @@
 from __future__ import annotations
 
+import functools
+import os
 import shutil
 import subprocess
+import sys
 import tempfile
 import unittest
 from pathlib import Path
@@ -12,12 +15,8 @@ NEXT_ID = REPO_ROOT / 'scripts' / 'roadmap-next-id.sh'
 DOGFOOD_PROBE = REPO_ROOT / 'scripts' / 'dogfood-probe.py'
 
 
-
-
-import sys
-
+@functools.lru_cache(maxsize=1)
 def get_bash_executable() -> str | None:
-    import os
     if os.name == 'nt':
         for candidate in (
             r'C:\Program Files\Git\bin\bash.exe',
@@ -33,6 +32,7 @@ def get_bash_executable() -> str | None:
     return None
 
 
+@functools.lru_cache(maxsize=1)
 def require_bash() -> bool:
     bash = get_bash_executable()
     if not bash: