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from __future__ import unicode_literals

import contextlib

import os.path

import sys

import pytest

from pre_commit import parse_shebang

from pre_commit.languages.docker import docker_is_running

from pre_commit.languages.pcre import GREP

from pre_commit.util import cmd_output

from testing.auto_namedtuple import auto_namedtuple

TESTING_DIR = os.path.abspath(os.path.dirname(__file__))

def get_resource_path(path):

return os.path.join(TESTING_DIR, 'resources', path)

def cmd_output_mocked_pre_commit_home(*args, **kwargs):

# keyword-only argument

tempdir_factory = kwargs.pop('tempdir_factory')

pre_commit_home = kwargs.pop('pre_commit_home', tempdir_factory.get())

# Don't want to write to the home directory

env = dict(kwargs.pop('env', os.environ), PRE_COMMIT_HOME=pre_commit_home)

return cmd_output(*args, env=env, **kwargs)

skipif_cant_run_docker = pytest.mark.skipif(

docker_is_running() is False,

reason='Docker isn\'t running or can\'t be accessed',

)

skipif_cant_run_swift = pytest.mark.skipif(

parse_shebang.find_executable('swift') is None,

reason='swift isn\'t installed or can\'t be found',

)

xfailif_windows_no_ruby = pytest.mark.xfail(

os.name == 'nt',

reason='Ruby support not yet implemented on windows.',

)

def broken_deep_listdir(): # pragma: no cover (platform specific)

if sys.platform != 'win32':

return False

try:

os.listdir(str('\\\\?\\') + os.path.abspath(str('.')))

except OSError:

return True

try:

os.listdir(b'\\\\?\\C:' + b'\\' * 300)

except TypeError:

return True

except OSError:

return False

xfailif_broken_deep_listdir = pytest.mark.xfail(

broken_deep_listdir(),

reason='Node on windows requires deep listdir',

)

def platform_supports_pcre():

output = cmd_output(GREP, '-P', "name='pre", 'setup.py', retcode=None)

return output[0] == 0 and "name='pre_commit'," in output[1]

xfailif_no_pcre_support = pytest.mark.xfail(

not platform_supports_pcre(),

reason='grep -P is not supported on this platform',

)

xfailif_no_symlink = pytest.mark.xfail(

not hasattr(os, 'symlink'),

reason='Symlink is not supported on this platform',

)

def supports_venv(): # pragma: no cover (platform specific)

try:

__import__('ensurepip')

__import__('venv')

return True

except ImportError:

return False

xfailif_no_venv = pytest.mark.xfail(

not supports_venv(), reason='Does not support venv module',

)

def run_opts(

all_files=False,

files=(),

color=False,

verbose=False,

hook=None,

origin='',

source='',

hook_stage='commit',

show_diff_on_failure=False,

commit_msg_filename='',

# These are mutually exclusive

assert not (all_files and files)

return auto_namedtuple(

all_files=all_files,

files=files,

color=color,

verbose=verbose,

hook=hook,

origin=origin,

source=source,

hook_stage=hook_stage,

show_diff_on_failure=show_diff_on_failure,

commit_msg_filename=commit_msg_filename,

)

@contextlib.contextmanager

def cwd(path):

original_cwd = os.getcwd()

os.chdir(path)

try:

yield

finally:

os.chdir(original_cwd)

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