Files
pre-commit/tests/xargs_test.py
2016-03-25 11:21:50 -07:00

73 lines
1.7 KiB
Python

from __future__ import absolute_import
from __future__ import unicode_literals
import pytest
from pre_commit import xargs
def test_partition_trivial():
assert xargs.partition(('cmd',), ()) == (('cmd',),)
def test_partition_simple():
assert xargs.partition(('cmd',), ('foo',)) == (('cmd', 'foo'),)
def test_partition_limits():
ret = xargs.partition(
('ninechars',), (
# Just match the end (with spaces)
'.' * 5, '.' * 4,
# Just match the end (single arg)
'.' * 10,
# Goes over the end
'.' * 5,
'.' * 6,
),
_max_length=20,
)
assert ret == (
('ninechars', '.' * 5, '.' * 4),
('ninechars', '.' * 10),
('ninechars', '.' * 5),
('ninechars', '.' * 6),
)
def test_argument_too_long():
with pytest.raises(xargs.ArgumentTooLongError):
xargs.partition(('a' * 5,), ('a' * 5,), _max_length=10)
def test_xargs_smoke():
ret, out, err = xargs.xargs(('echo',), ('hello', 'world'))
assert ret == 0
assert out == b'hello world\n'
assert err == b''
exit_cmd = ('bash', '-c', 'exit $1', '--')
# Abuse max_length to control the exit code
max_length = len(' '.join(exit_cmd)) + 2
def test_xargs_negate():
ret, _, _ = xargs.xargs(
exit_cmd, ('1',), negate=True, _max_length=max_length,
)
assert ret == 0
ret, _, _ = xargs.xargs(
exit_cmd, ('1', '0'), negate=True, _max_length=max_length,
)
assert ret == 1
def test_xargs_retcode_normal():
ret, _, _ = xargs.xargs(exit_cmd, ('0',), _max_length=max_length)
assert ret == 0
ret, _, _ = xargs.xargs(exit_cmd, ('0', '1'), _max_length=max_length)
assert ret == 1