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import os.path

import stat

import subprocess

import pytest

from pre_commit.util import CalledProcessError

from pre_commit.util import clean_path_on_failure

from pre_commit.util import cmd_output

from pre_commit.util import cmd_output_b

from pre_commit.util import cmd_output_p

from pre_commit.util import make_executable

from pre_commit.util import parse_version

from pre_commit.util import rmtree

from pre_commit.util import tmpdir

def test_CalledProcessError_str():

error = CalledProcessError(1, ('exe',), 0, b'output', b'errors')

assert str(error) == (

"command: ('exe',)\n"

'return code: 1\n'

'expected return code: 0\n'

'stdout:\n'

' output\n'

'stderr:\n'

' errors'

)

def test_CalledProcessError_str_nooutput():

error = CalledProcessError(1, ('exe',), 0, b'', b'')

assert str(error) == (

"command: ('exe',)\n"

'return code: 1\n'

'expected return code: 0\n'

'stdout: (none)\n'

'stderr: (none)'

)

def test_clean_on_failure_noop(in_tmpdir):

with clean_path_on_failure('foo'):

pass

def test_clean_path_on_failure_does_nothing_when_not_raising(in_tmpdir):

with clean_path_on_failure('foo'):

os.mkdir('foo')

assert os.path.exists('foo')

def test_clean_path_on_failure_cleans_for_normal_exception(in_tmpdir):

class MyException(Exception):

pass

with pytest.raises(MyException):

with clean_path_on_failure('foo'):

os.mkdir('foo')

raise MyException

assert not os.path.exists('foo')

def test_clean_path_on_failure_cleans_for_system_exit(in_tmpdir):

class MySystemExit(SystemExit):

pass

with pytest.raises(MySystemExit):

with clean_path_on_failure('foo'):

os.mkdir('foo')

raise MySystemExit

assert not os.path.exists('foo')

def test_tmpdir():

with tmpdir() as tempdir:

assert os.path.exists(tempdir)

assert not os.path.exists(tempdir)

def test_cmd_output_exe_not_found():

ret, out, _ = cmd_output('dne', retcode=None)

assert ret == 1

assert out == 'Executable `dne` not found'

@pytest.mark.parametrize('fn', (cmd_output_b, cmd_output_p))

def test_cmd_output_exe_not_found_bytes(fn):

ret, out, _ = fn('dne', retcode=None, stderr=subprocess.STDOUT)

assert ret == 1

assert out == b'Executable `dne` not found'

@pytest.mark.parametrize('fn', (cmd_output_b, cmd_output_p))

def test_cmd_output_no_shebang(tmpdir, fn):

f = tmpdir.join('f').ensure()

make_executable(f)

# previously this raised `OSError` -- the output is platform specific

ret, out, _ = fn(str(f), retcode=None, stderr=subprocess.STDOUT)

assert ret == 1

assert isinstance(out, bytes)

assert out.endswith(b'\n')

def test_parse_version():

assert parse_version('0.0') == parse_version('0.0')

assert parse_version('0.1') > parse_version('0.0')

assert parse_version('2.1') >= parse_version('2')

def test_rmtree_read_only_directories(tmpdir):

"""Simulates the go module tree. See #1042"""

tmpdir.join('x/y/z').ensure_dir().join('a').ensure()

mode = os.stat(str(tmpdir.join('x'))).st_mode

mode_no_w = mode & ~(stat.S_IWUSR | stat.S_IWGRP | stat.S_IWOTH)

tmpdir.join('x/y/z').chmod(mode_no_w)

rmtree(str(tmpdir.join('x')))

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