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Gracy769
c31c5e27dd
Moves get_bash_executable and require_bash into a shared module so their lru_cache state is per-session rather than per-test-module. Also adds a comment regarding monkeypatching since lru_cache will silently drop changes to os.environ if it has already been populated. Closes follow-up items from PR review.
37 lines
1.2 KiB
Python
37 lines
1.2 KiB
Python
import functools
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import os
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import shutil
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import subprocess
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# Warning: get_bash_executable and require_bash use @functools.lru_cache.
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# Do not monkeypatch os.environ['PATH'] or shutil.which in tests and expect
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# these functions to re-evaluate. If you must patch them, call .cache_clear()
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# before and after the test.
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@functools.lru_cache(maxsize=1)
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def get_bash_executable() -> str | None:
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if os.name == 'nt':
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for candidate in (
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r'C:\Program Files\Git\bin\bash.exe',
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r'C:\Program Files\Git\usr\bin\bash.exe',
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r'C:\Program Files (x86)\Git\bin\bash.exe',
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os.path.expandvars(r'%LOCALAPPDATA%\Programs\Git\bin\bash.exe'),
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):
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if os.path.exists(candidate):
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return candidate
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bash = shutil.which('bash')
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if bash and 'WindowsApps' not in bash:
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return bash
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return None
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@functools.lru_cache(maxsize=1)
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def require_bash() -> bool:
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bash = get_bash_executable()
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if not bash:
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return False
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try:
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res = subprocess.run([bash, '-c', 'echo 1'], capture_output=True, text=True, timeout=2)
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return res.returncode == 0
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except Exception:
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return False
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