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from __future__ import annotations
import os.path
import shlex
import shutil
import sys
from typing import Any
from unittest import mock
import cfgv
import pytest
import re_assert
import pre_commit.constants as C
from pre_commit import lang_base
from pre_commit.all_languages import languages
from pre_commit.clientlib import CONFIG_SCHEMA
from pre_commit.clientlib import load_manifest
from pre_commit.hook import Hook
from pre_commit.languages import python
from pre_commit.languages import system
from pre_commit.prefix import Prefix
from pre_commit.repository import _hook_installed
from pre_commit.repository import all_hooks
from pre_commit.repository import install_hook_envs
from pre_commit.util import cmd_output
from pre_commit.util import cmd_output_b
from testing.fixtures import make_config_from_repo
from testing.fixtures import make_repo
from testing.fixtures import modify_manifest
from testing.language_helpers import run_language
from testing.util import cwd
from testing.util import get_resource_path
def _hook_run(hook, filenames, color):
return run_language(
path=hook.prefix.prefix_dir,
language=languages[hook.language],
exe=hook.entry,
args=hook.args,
file_args=filenames,
version=hook.language_version,
deps=hook.additional_dependencies,
is_local=hook.src == 'local',
require_serial=hook.require_serial,
color=color,
)
def _get_hook_no_install(repo_config, store, hook_id):
config = {'repos': [repo_config]}
config = cfgv.validate(config, CONFIG_SCHEMA)
config = cfgv.apply_defaults(config, CONFIG_SCHEMA)
hooks = all_hooks(config, store)
hook, = (hook for hook in hooks if hook.id == hook_id)
return hook
def _get_hook(repo_config, store, hook_id):
hook = _get_hook_no_install(repo_config, store, hook_id)
install_hook_envs([hook], store)
return hook
def _test_hook_repo(
tempdir_factory,
store,
repo_path,
hook_id,
args,
expected,
expected_return_code=0,
config_kwargs=None,
color=False,
):
path = make_repo(tempdir_factory, repo_path)
config = make_config_from_repo(path, **(config_kwargs or {}))
hook = _get_hook(config, store, hook_id)
ret, out = _hook_run(hook, args, color=color)
assert ret == expected_return_code
assert out == expected
def test_python_venv_deprecation(store, caplog):
config = {
'repo': 'local',
'hooks': [{
'id': 'example',
'name': 'example',
'language': 'python_venv',
'entry': 'echo hi',
}],
}
_get_hook(config, store, 'example')
assert caplog.messages[-1] == (
'`repo: local` uses deprecated `language: python_venv`. '
'This is an alias for `language: python`. '
'Often `pre-commit autoupdate --repo local` will fix this.'
)
def test_system_hook_with_spaces(tempdir_factory, store):
_test_hook_repo(
tempdir_factory, store, 'system_hook_with_spaces_repo',
'system-hook-with-spaces', [os.devnull], b'Hello World\n',
)
def test_missing_executable(tempdir_factory, store):
_test_hook_repo(
tempdir_factory, store, 'not_found_exe',
'not-found-exe', [os.devnull],
b'Executable `i-dont-exist-lol` not found',
expected_return_code=1,
)
def test_run_a_script_hook(tempdir_factory, store):
_test_hook_repo(
tempdir_factory, store, 'script_hooks_repo',
'bash_hook', ['bar'], b'bar\nHello World\n',
)
def test_run_hook_with_spaced_args(tempdir_factory, store):
_test_hook_repo(
tempdir_factory, store, 'arg_per_line_hooks_repo',
'arg-per-line',
['foo bar', 'baz'],
b'arg: hello\narg: world\narg: foo bar\narg: baz\n',
)
def test_run_hook_with_curly_braced_arguments(tempdir_factory, store):
_test_hook_repo(
tempdir_factory, store, 'arg_per_line_hooks_repo',
'arg-per-line',
[],
b"arg: hi {1}\narg: I'm {a} problem\n",
config_kwargs={
'hooks': [{
'id': 'arg-per-line',
'args': ['hi {1}', "I'm {a} problem"],
}],
},
)
def test_intermixed_stdout_stderr(tempdir_factory, store):
_test_hook_repo(
tempdir_factory, store, 'stdout_stderr_repo',
'stdout-stderr',
[],
b'0\n1\n2\n3\n4\n5\n',
)
@pytest.mark.xfail(sys.platform == 'win32', reason='ptys are posix-only')
def test_output_isatty(tempdir_factory, store):
_test_hook_repo(
tempdir_factory, store, 'stdout_stderr_repo',
'tty-check',
[],
b'stdin: False\nstdout: True\nstderr: True\n',
color=True,
)
def _norm_pwd(path):
# Under windows bash's temp and windows temp is different.
# This normalizes to the bash /tmp
return cmd_output_b(
'bash', '-c', f"cd '{path}' && pwd",
)[1].strip()
def test_cwd_of_hook(in_git_dir, tempdir_factory, store):
# Note: this doubles as a test for `system` hooks
_test_hook_repo(
tempdir_factory, store, 'prints_cwd_repo',
'prints_cwd', ['-L'], _norm_pwd(in_git_dir.strpath) + b'\n',
)
def test_lots_of_files(tempdir_factory, store):
_test_hook_repo(
tempdir_factory, store, 'script_hooks_repo',
'bash_hook', [os.devnull] * 15000, mock.ANY,
)
def test_additional_dependencies_roll_forward(tempdir_factory, store):
path = make_repo(tempdir_factory, 'python_hooks_repo')
config1 = make_config_from_repo(path)
hook1 = _get_hook(config1, store, 'foo')
with python.in_env(hook1.prefix, hook1.language_version):
assert 'mccabe' not in cmd_output('pip', 'freeze', '-l')[1]
# Make another repo with additional dependencies
config2 = make_config_from_repo(path)
config2['hooks'][0]['additional_dependencies'] = ['mccabe']
hook2 = _get_hook(config2, store, 'foo')
with python.in_env(hook2.prefix, hook2.language_version):
assert 'mccabe' in cmd_output('pip', 'freeze', '-l')[1]
# should not have affected original
with python.in_env(hook1.prefix, hook1.language_version):
assert 'mccabe' not in cmd_output('pip', 'freeze', '-l')[1]
@pytest.mark.parametrize('v', ('v1', 'v2'))
def test_repository_state_compatibility(tempdir_factory, store, v):
path = make_repo(tempdir_factory, 'python_hooks_repo')
config = make_config_from_repo(path)
hook = _get_hook(config, store, 'foo')
envdir = lang_base.environment_dir(
hook.prefix,
python.ENVIRONMENT_DIR,
hook.language_version,
)
os.remove(os.path.join(envdir, f'.install_state_{v}'))
assert _hook_installed(hook) is True
def test_unknown_keys(store, caplog):
config = {
'repo': 'local',
'hooks': [{
'id': 'too-much',
'name': 'too much',
'hello': 'world',
'foo': 'bar',
'language': 'system',
'entry': 'true',
}],
}
_get_hook(config, store, 'too-much')
msg, = caplog.messages
assert msg == 'Unexpected key(s) present on local => too-much: foo, hello'
def test_reinstall(tempdir_factory, store, log_info_mock):
path = make_repo(tempdir_factory, 'python_hooks_repo')
config = make_config_from_repo(path)
_get_hook(config, store, 'foo')
# We print some logging during clone (1) + install (3)
assert log_info_mock.call_count == 4
log_info_mock.reset_mock()
# Reinstall on another run should not trigger another install
_get_hook(config, store, 'foo')
assert log_info_mock.call_count == 0
def test_control_c_control_c_on_install(tempdir_factory, store):
"""Regression test for #186."""
path = make_repo(tempdir_factory, 'python_hooks_repo')
config = make_config_from_repo(path)
hooks = [_get_hook_no_install(config, store, 'foo')]
class MyKeyboardInterrupt(KeyboardInterrupt):
pass
# To simulate a killed install, we'll make PythonEnv.run raise ^C
# and then to simulate a second ^C during cleanup, we'll make shutil.rmtree
# raise as well.
with pytest.raises(MyKeyboardInterrupt):
with mock.patch.object(
lang_base, 'setup_cmd', side_effect=MyKeyboardInterrupt,
):
with mock.patch.object(
shutil, 'rmtree', side_effect=MyKeyboardInterrupt,
):
install_hook_envs(hooks, store)
# Should have made an environment, however this environment is broken!
hook, = hooks
envdir = lang_base.environment_dir(
hook.prefix,
python.ENVIRONMENT_DIR,
hook.language_version,
)
assert os.path.exists(envdir)
# However, it should be perfectly runnable (reinstall after botched
# install)
install_hook_envs(hooks, store)
ret, out = _hook_run(hook, (), color=False)
assert ret == 0
def test_invalidated_virtualenv(tempdir_factory, store):
# A cached virtualenv may become invalidated if the system python upgrades
# This should not cause every hook in that virtualenv to fail.
path = make_repo(tempdir_factory, 'python_hooks_repo')
config = make_config_from_repo(path)
hook = _get_hook(config, store, 'foo')
# Simulate breaking of the virtualenv
envdir = lang_base.environment_dir(
hook.prefix,
python.ENVIRONMENT_DIR,
hook.language_version,
)
libdir = os.path.join(envdir, 'lib', hook.language_version)
paths = [
os.path.join(libdir, p) for p in ('site.py', 'site.pyc', '__pycache__')
]
cmd_output_b('rm', '-rf', *paths)
# pre-commit should rebuild the virtualenv and it should be runnable
hook = _get_hook(config, store, 'foo')
ret, out = _hook_run(hook, (), color=False)
assert ret == 0
def test_really_long_file_paths(tempdir_factory, store):
base_path = tempdir_factory.get()
really_long_path = os.path.join(base_path, 'really_long' * 10)
cmd_output_b('git', 'init', really_long_path)
path = make_repo(tempdir_factory, 'python_hooks_repo')
config = make_config_from_repo(path)
with cwd(really_long_path):
_get_hook(config, store, 'foo')
def test_config_overrides_repo_specifics(tempdir_factory, store):
path = make_repo(tempdir_factory, 'script_hooks_repo')
config = make_config_from_repo(path)
hook = _get_hook(config, store, 'bash_hook')
assert hook.files == ''
# Set the file regex to something else
config['hooks'][0]['files'] = '\\.sh$'
hook = _get_hook(config, store, 'bash_hook')
assert hook.files == '\\.sh$'
def _create_repo_with_tags(tempdir_factory, src, tag):
path = make_repo(tempdir_factory, src)
cmd_output_b('git', 'tag', tag, cwd=path)
return path
def test_tags_on_repositories(in_tmpdir, tempdir_factory, store):
tag = 'v1.1'
git1 = _create_repo_with_tags(tempdir_factory, 'prints_cwd_repo', tag)
git2 = _create_repo_with_tags(tempdir_factory, 'script_hooks_repo', tag)
config1 = make_config_from_repo(git1, rev=tag)
hook1 = _get_hook(config1, store, 'prints_cwd')
ret1, out1 = _hook_run(hook1, ('-L',), color=False)
assert ret1 == 0
assert out1.strip() == _norm_pwd(in_tmpdir)
config2 = make_config_from_repo(git2, rev=tag)
hook2 = _get_hook(config2, store, 'bash_hook')
ret2, out2 = _hook_run(hook2, ('bar',), color=False)
assert ret2 == 0
assert out2 == b'bar\nHello World\n'
@pytest.fixture
def local_python_config():
# Make a "local" hooks repo that just installs our other hooks repo
repo_path = get_resource_path('python_hooks_repo')
manifest = load_manifest(os.path.join(repo_path, C.MANIFEST_FILE))
hooks = [
dict(hook, additional_dependencies=[repo_path]) for hook in manifest
]
return {'repo': 'local', 'hooks': hooks}
def test_local_python_repo(store, local_python_config):
hook = _get_hook(local_python_config, store, 'foo')
# language_version should have been adjusted to the interpreter version
assert hook.language_version != C.DEFAULT
ret, out = _hook_run(hook, ('filename',), color=False)
assert ret == 0
assert out == b"['filename']\nHello World\n"
def test_default_language_version(store, local_python_config):
config: dict[str, Any] = {
'default_language_version': {'python': 'fake'},
'default_stages': ['pre-commit'],
'repos': [local_python_config],
}
# `language_version` was not set, should default
hook, = all_hooks(config, store)
assert hook.language_version == 'fake'
# `language_version` is set, should not default
config['repos'][0]['hooks'][0]['language_version'] = 'fake2'
hook, = all_hooks(config, store)
assert hook.language_version == 'fake2'
def test_default_stages(store, local_python_config):
config: dict[str, Any] = {
'default_language_version': {'python': C.DEFAULT},
'default_stages': ['pre-commit'],
'repos': [local_python_config],
}
# `stages` was not set, should default
hook, = all_hooks(config, store)
assert hook.stages == ['pre-commit']
# `stages` is set, should not default
config['repos'][0]['hooks'][0]['stages'] = ['pre-push']
hook, = all_hooks(config, store)
assert hook.stages == ['pre-push']
def test_hook_id_not_present(tempdir_factory, store, caplog):
path = make_repo(tempdir_factory, 'script_hooks_repo')
config = make_config_from_repo(path)
config['hooks'][0]['id'] = 'i-dont-exist'
with pytest.raises(SystemExit):
_get_hook(config, store, 'i-dont-exist')
_, msg = caplog.messages
assert msg == (
f'`i-dont-exist` is not present in repository file://{path}. '
f'Typo? Perhaps it is introduced in a newer version? '
f'Often `pre-commit autoupdate` fixes this.'
)
def test_too_new_version(tempdir_factory, store, caplog):
path = make_repo(tempdir_factory, 'script_hooks_repo')
with modify_manifest(path) as manifest:
manifest[0]['minimum_pre_commit_version'] = '999.0.0'
config = make_config_from_repo(path)
with pytest.raises(SystemExit):
_get_hook(config, store, 'bash_hook')
_, msg = caplog.messages
pattern = re_assert.Matches(
r'^The hook `bash_hook` requires pre-commit version 999\.0\.0 but '
r'version \d+\.\d+\.\d+ is installed. '
r'Perhaps run `pip install --upgrade pre-commit`\.$',
)
pattern.assert_matches(msg)
@pytest.mark.parametrize('version', ('0.1.0', C.VERSION))
def test_versions_ok(tempdir_factory, store, version):
path = make_repo(tempdir_factory, 'script_hooks_repo')
with modify_manifest(path) as manifest:
manifest[0]['minimum_pre_commit_version'] = version
config = make_config_from_repo(path)
# Should succeed
_get_hook(config, store, 'bash_hook')
def test_manifest_hooks(tempdir_factory, store):
path = make_repo(tempdir_factory, 'script_hooks_repo')
config = make_config_from_repo(path)
hook = _get_hook(config, store, 'bash_hook')
assert hook == Hook(
src=f'file://{path}',
prefix=Prefix(mock.ANY),
additional_dependencies=[],
alias='',
always_run=False,
args=[],
description='',
entry='bin/hook.sh',
exclude='^$',
exclude_types=[],
files='',
id='bash_hook',
language='script',
language_version='default',
log_file='',
minimum_pre_commit_version='0',
name='Bash hook',
pass_filenames=True,
require_serial=False,
stages=[
'commit-msg',
'post-checkout',
'post-commit',
'post-merge',
'post-rewrite',
'pre-commit',
'pre-merge-commit',
'pre-push',
'pre-rebase',
'prepare-commit-msg',
'manual',
],
types=['file'],
types_or=[],
verbose=False,
fail_fast=False,
)
def test_non_installable_hook_error_for_language_version(store, caplog):
config = {
'repo': 'local',
'hooks': [{
'id': 'system-hook',
'name': 'system-hook',
'language': 'system',
'entry': 'python3 -c "import sys; print(sys.version)"',
'language_version': 'python3.10',
}],
}
with pytest.raises(SystemExit) as excinfo:
_get_hook(config, store, 'system-hook')
assert excinfo.value.code == 1
msg, = caplog.messages
assert msg == (
'The hook `system-hook` specifies `language_version` but is using '
'language `system` which does not install an environment. '
'Perhaps you meant to use a specific language?'
)
def test_non_installable_hook_error_for_additional_dependencies(store, caplog):
config = {
'repo': 'local',
'hooks': [{
'id': 'system-hook',
'name': 'system-hook',
'language': 'system',
'entry': 'python3 -c "import sys; print(sys.version)"',
'additional_dependencies': ['astpretty'],
}],
}
with pytest.raises(SystemExit) as excinfo:
_get_hook(config, store, 'system-hook')
assert excinfo.value.code == 1
msg, = caplog.messages
assert msg == (
'The hook `system-hook` specifies `additional_dependencies` but is '
'using language `system` which does not install an environment. '
'Perhaps you meant to use a specific language?'
)
def test_args_with_spaces_and_quotes(tmp_path):
ret = run_language(
tmp_path, system,
f"{shlex.quote(sys.executable)} -c 'import sys; print(sys.argv[1:])'",
('i have spaces', 'and"\'quotes', '$and !this'),
)
expected = b"['i have spaces', 'and\"\\'quotes', '$and !this']\n"
assert ret == (0, expected)
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