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from __future__ import annotations

import functools

import io

import os.path

from unittest import mock

import pytest

from pre_commit import output

from pre_commit.envcontext import envcontext

from pre_commit.logging_handler import logging_handler

from pre_commit.store import Store

from pre_commit.util import cmd_output

from pre_commit.util import make_executable

from testing.fixtures import git_dir

from testing.fixtures import make_consuming_repo

from testing.fixtures import write_config

from testing.util import cwd

from testing.util import git_commit

@pytest.fixture

def tempdir_factory(tmpdir):

class TmpdirFactory:

def __init__(self):

self.tmpdir_count = 0

def get(self):

path = tmpdir.join(str(self.tmpdir_count)).strpath

self.tmpdir_count += 1

os.mkdir(path)

return path

yield TmpdirFactory()

@pytest.fixture

def in_tmpdir(tempdir_factory):

path = tempdir_factory.get()

with cwd(path):

yield path

@pytest.fixture

def in_git_dir(tmpdir):

repo = tmpdir.join('repo').ensure_dir()

with repo.as_cwd():

cmd_output('git', 'init')

yield repo

def _make_conflict():

cmd_output('git', 'checkout', 'origin/master', '-b', 'foo')

with open('conflict_file', 'w') as conflict_file:

conflict_file.write('herp\nderp\n')

cmd_output('git', 'add', 'conflict_file')

with open('foo_only_file', 'w') as foo_only_file:

foo_only_file.write('foo')

cmd_output('git', 'add', 'foo_only_file')

git_commit(msg=_make_conflict.__name__)

cmd_output('git', 'checkout', 'origin/master', '-b', 'bar')

with open('conflict_file', 'w') as conflict_file:

conflict_file.write('harp\nddrp\n')

cmd_output('git', 'add', 'conflict_file')

with open('bar_only_file', 'w') as bar_only_file:

bar_only_file.write('bar')

cmd_output('git', 'add', 'bar_only_file')

git_commit(msg=_make_conflict.__name__)

cmd_output('git', 'merge', 'foo', check=False)

@pytest.fixture

def in_merge_conflict(tempdir_factory):

path = make_consuming_repo(tempdir_factory, 'script_hooks_repo')

open(os.path.join(path, 'placeholder'), 'a').close()

cmd_output('git', 'add', 'placeholder', cwd=path)

git_commit(msg=in_merge_conflict.__name__, cwd=path)

conflict_path = tempdir_factory.get()

cmd_output('git', 'clone', path, conflict_path)

with cwd(conflict_path):

_make_conflict()

yield os.path.join(conflict_path)

@pytest.fixture

def in_conflicting_submodule(tempdir_factory):

git_dir_1 = git_dir(tempdir_factory)

git_dir_2 = git_dir(tempdir_factory)

git_commit(msg=in_conflicting_submodule.__name__, cwd=git_dir_2)

cmd_output('git', 'submodule', 'add', git_dir_2, 'sub', cwd=git_dir_1)

with cwd(os.path.join(git_dir_1, 'sub')):

_make_conflict()

yield

@pytest.fixture

def commit_msg_repo(tempdir_factory):

path = git_dir(tempdir_factory)

config = {

'repo': 'local',

'hooks': [{

'id': 'must-have-signoff',

'name': 'Must have "Signed off by:"',

'entry': 'grep -q "Signed off by:"',

'language': 'system',

'stages': ['commit-msg'],

}],

}

write_config(path, config)

with cwd(path):

cmd_output('git', 'add', '.')

git_commit(msg=commit_msg_repo.__name__)

yield path

@pytest.fixture

def prepare_commit_msg_repo(tempdir_factory):

path = git_dir(tempdir_factory)

script_name = 'add_sign_off.sh'

config = {

'repo': 'local',

'hooks': [{

'id': 'add-signoff',

'name': 'Add "Signed off by:"',

'entry': f'./{script_name}',

'language': 'script',

'stages': ['prepare-commit-msg'],

}],

}

write_config(path, config)

with cwd(path):

with open(script_name, 'w') as script_file:

script_file.write(

'#!/usr/bin/env bash\n'

'set -eu\n'

'echo "\nSigned off by: " >> "$1"\n',

)

make_executable(script_name)

cmd_output('git', 'add', '.')

git_commit(msg=prepare_commit_msg_repo.__name__)

yield path

@pytest.fixture

def failing_prepare_commit_msg_repo(tempdir_factory):

path = git_dir(tempdir_factory)

config = {

'repo': 'local',

'hooks': [{

'id': 'add-signoff',

'name': 'Add "Signed off by:"',

'entry': 'bash -c "exit 1"',

'language': 'system',

'stages': ['prepare-commit-msg'],

}],

}

write_config(path, config)

with cwd(path):

cmd_output('git', 'add', '.')

git_commit(msg=failing_prepare_commit_msg_repo.__name__)

yield path

@pytest.fixture(autouse=True, scope='session')

def dont_write_to_home_directory():

"""pre_commit.store.Store will by default write to the home directory

We'll mock out `Store.get_default_directory` to raise invariantly so we

don't construct a `Store` object that writes to our home directory.

"""

class YouForgotToExplicitlyChooseAStoreDirectory(AssertionError):

pass

with mock.patch.object(

Store,

'get_default_directory',

side_effect=YouForgotToExplicitlyChooseAStoreDirectory,

yield

@pytest.fixture(autouse=True, scope='session')

def configure_logging():

with logging_handler(use_color=False):

yield

@pytest.fixture

def mock_store_dir(tempdir_factory):

tmpdir = tempdir_factory.get()

with mock.patch.object(

Store,

'get_default_directory',

return_value=tmpdir,

yield tmpdir

@pytest.fixture

def store(tempdir_factory):

yield Store(os.path.join(tempdir_factory.get(), '.pre-commit'))

class Fixture:

def __init__(self, stream: io.BytesIO) -> None:

self._stream = stream

def get_bytes(self) -> bytes:

"""Get the output as-if no encoding occurred"""

data = self._stream.getvalue()

self._stream.seek(0)

self._stream.truncate()

return data.replace(b'\r\n', b'\n')

def get(self) -> str:

"""Get the output assuming it was written as UTF-8 bytes"""

return self.get_bytes().decode()

@pytest.fixture

def cap_out():

stream = io.BytesIO()

write = functools.partial(output.write, stream=stream)

write_line_b = functools.partial(output.write_line_b, stream=stream)

with mock.patch.multiple(output, write=write, write_line_b=write_line_b):

yield Fixture(stream)

@pytest.fixture(scope='session', autouse=True)

def set_git_templatedir(tmpdir_factory):

tdir = str(tmpdir_factory.mktemp('git_template_dir'))

with envcontext((('GIT_TEMPLATE_DIR', tdir),)):

yield

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