def test_temp_mount_failure_error_on_umount(mocker, shared_datadir):
if not is_superuser():
pytest.xfail("can only run this test as superuser")
cmd = [None]
def check_output(*args, **kwargs):
cmd[0] = args[0]
cmd_ = cmd[0]
if "umount" in cmd_:
raise subprocess.CalledProcessError(
returncode=1,
cmd=cmd_,
output="umount: {}: this is not what I'm expecting".format(
shared_datadir).encode("utf8"))
# do nothing, because there isn't a reason to really mount when I
# am going to fail its umount. It is just something else to tear down
# manually later.
mocker.patch.object(subprocess, "check_call")
with mocker.mock_module.patch.object(subprocess,
"check_output",
side_effect=check_output,
autospec=True):
with pytest.raises(subprocess.CalledProcessError) as e:
with temp_mount(shared_datadir, "testtempmount"):
pass
assert str(
e.value) == "Command '{}' returned non-zero exit status 1.".format(
cmd[0])
def test_temp_mount_failure_not_superuser(mocker):
def fake(_):
class Fake:
def __init__(self):
self.pw_uid = 1000
return Fake()
mocker.patch.object(pwd, "getpwuid", side_effect=fake, autospec=True)
with pytest.raises(PermissionError) as e:
with temp_mount("doesnt_matter", "testtempmount"):
assert pwd.getpwuid.called
assert str(e.value) == "Requires superuser"
def test_temp_mount_failure_not_dir(mocker, shared_datadir):
# force always to be superuser, as it will fail because of
# directory anyway
def fake(_):
class Fake:
def __init__(self):
self.pw_uid = 0
return Fake()
mocker.patch.object(pwd, "getpwuid", side_effect=fake, autospec=True)
with pytest.raises(NotADirectoryError) as e:
invalid_dir = shared_datadir / "&&&"
with temp_mount(invalid_dir, "testtempmount"):
assert pwd.getpwuid.called
assert str(e.value) == "{} is not a directory".format(invalid_dir)
def test_temp_mount_unmounted_arbitrarily(shared_datadir):
if not is_superuser():
pytest.xfail("can only run this test as superuser")
tmp = tempfile.mkdtemp(dir=shared_datadir)
path = os.path.join(tmp, "test")
with open(path, "w") as f:
f.write("hello world")
assert os.path.isfile(path)
# tmpfs starts empty, test file should no longer exist
with temp_mount(shared_datadir, "testtempmount"):
subprocess.check_call("umount {}".format(shared_datadir), shell=True)
assert os.path.isfile(path)
# make sure tmpfs was umounted on tear down
tmpfs = subprocess.check_output("mount | grep tmpfs", shell=True)
tmpfs = tmpfs.decode("utf8")
assert "testtempmount" not in tmpfs