def check_requested_output_file(options):
if options.output_file == '-':
if sys.stdout.isatty():
raise BadArgsError(
"Output was set to stdout '-' but it looks like stdout "
"is connected to a terminal. Please redirect stdout to a "
"file.")
elif not is_file_writable(options.output_file):
raise OutputFileAccessError(
f"Output file location ({options.output_file}) is not a writable file."
)
def test_permission_error(self, basic_file):
pathmock = MagicMock(spec_set=basic_file)
pathmock.is_symlink.return_value = False
pathmock.exists.return_value = True
pathmock.is_file.side_effect = PermissionError
assert not helpers.is_file_writable(pathmock)
def test_chmod(self, basic_file):
assert helpers.is_file_writable(basic_file)
basic_file.chmod(0o400)
assert not helpers.is_file_writable(basic_file)
basic_file.chmod(0o000)
assert not helpers.is_file_writable(basic_file)
def test_symlink_loop(self, tmp_path):
loop = tmp_path / 'loop'
loop.symlink_to(loop)
assert not helpers.is_file_writable(loop)
def test_plain(self, non_existent):
assert helpers.is_file_writable(non_existent)
