async def test_posix_file_lock(tmpdir):
file1 = Path(tmpdir / "1.lock")
# Also check having missing folders in the path is not an issue
file2 = Path(tmpdir / "missing_parent/missing_child/2.lock")
# Test multiple time to make sure we can re-acquire the mutex once released
for _ in range(2):
with _install_posix_file_lock(file1):
# Check mutex works
with pytest.raises(IPCServerAlreadyRunning):
with _install_posix_file_lock(file1):
pass
# Check we can create new mutex
with _install_posix_file_lock(file2):
pass
async def test_posix_file_lock_interprocess(tmpdir):
file1 = Path(tmpdir / "1.lock")
python_cmd = f"""
from pathlib import Path
from parsec.core.ipcinterface import _install_posix_file_lock, IPCServerAlreadyRunning
try:
with _install_posix_file_lock(Path("{file1}")):
pass
except IPCServerAlreadyRunning:
raise SystemExit(0)
else:
raise SystemExit(1)
"""
with _install_posix_file_lock(file1):
ret = subprocess.run(["python", "-c", python_cmd],
stdout=subprocess.PIPE,
stderr=subprocess.PIPE)
print(ret.stdout.decode())
print(ret.stderr.decode())
assert ret.returncode == 0