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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

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