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from __future__ import annotations
import os.path
import sys
from unittest import mock
import pytest
import pre_commit.constants as C
from pre_commit.envcontext import envcontext
from pre_commit.languages import python
from pre_commit.prefix import Prefix
from pre_commit.util import make_executable
from pre_commit.util import win_exe
from testing.language_helpers import run_language
def test_read_pyvenv_cfg(tmpdir):
pyvenv_cfg = tmpdir.join('pyvenv.cfg')
pyvenv_cfg.write(
'# I am a comment\n'
'\n'
'foo = bar\n'
'version-info=123\n',
)
expected = {'foo': 'bar', 'version-info': '123'}
assert python._read_pyvenv_cfg(pyvenv_cfg) == expected
def test_read_pyvenv_cfg_non_utf8(tmpdir):
pyvenv_cfg = tmpdir.join('pyvenv_cfg')
pyvenv_cfg.write_binary('hello = hello john.š\n'.encode())
expected = {'hello': 'hello john.š'}
assert python._read_pyvenv_cfg(pyvenv_cfg) == expected
def test_norm_version_expanduser():
home = os.path.expanduser('~')
if os.name == 'nt': # pragma: nt cover
path = r'~\python343'
expected_path = fr'{home}\python343'
else: # pragma: nt no cover
path = '~/.pyenv/versions/3.4.3/bin/python'
expected_path = f'{home}/.pyenv/versions/3.4.3/bin/python'
result = python.norm_version(path)
assert result == expected_path
def test_norm_version_of_default_is_sys_executable():
assert python.norm_version('default') is None
@pytest.mark.parametrize('v', ('python3.9', 'python3', 'python'))
def test_sys_executable_matches(v):
with mock.patch.object(sys, 'version_info', (3, 9, 10)):
assert python._sys_executable_matches(v)
assert python.norm_version(v) is None
@pytest.mark.parametrize('v', ('notpython', 'python3.x'))
def test_sys_executable_matches_does_not_match(v):
with mock.patch.object(sys, 'version_info', (3, 9, 10)):
assert not python._sys_executable_matches(v)
@pytest.mark.parametrize(
('exe', 'realpath', 'expected'), (
('/usr/bin/python3', '/usr/bin/python3.7', 'python3'),
('/usr/bin/python', '/usr/bin/python3.7', 'python3.7'),
('/usr/bin/python', '/usr/bin/python', None),
('/usr/bin/python3.7m', '/usr/bin/python3.7m', 'python3.7m'),
('v/bin/python', 'v/bin/pypy', 'pypy'),
),
)
def test_find_by_sys_executable(exe, realpath, expected):
with mock.patch.object(sys, 'executable', exe):
with mock.patch.object(os.path, 'realpath', return_value=realpath):
with mock.patch.object(python, 'find_executable', lambda x: x):
assert python._find_by_sys_executable() == expected
@pytest.fixture
def python_dir(tmpdir):
with tmpdir.as_cwd():
prefix = tmpdir.join('prefix').ensure_dir()
prefix.join('setup.py').write('import setuptools; setuptools.setup()')
prefix = Prefix(str(prefix))
yield prefix, tmpdir
def test_healthy_default_creator(python_dir):
prefix, tmpdir = python_dir
python.install_environment(prefix, C.DEFAULT, ())
# should be healthy right after creation
assert python.health_check(prefix, C.DEFAULT) is None
# even if a `types.py` file exists, should still be healthy
tmpdir.join('types.py').ensure()
assert python.health_check(prefix, C.DEFAULT) is None
def test_healthy_venv_creator(python_dir):
# venv creator produces slightly different pyvenv.cfg
prefix, tmpdir = python_dir
with envcontext((('VIRTUALENV_CREATOR', 'venv'),)):
python.install_environment(prefix, C.DEFAULT, ())
assert python.health_check(prefix, C.DEFAULT) is None
def test_unhealthy_python_goes_missing(python_dir):
prefix, tmpdir = python_dir
python.install_environment(prefix, C.DEFAULT, ())
exe_name = win_exe('python')
py_exe = prefix.path(python.bin_dir('py_env-default'), exe_name)
os.remove(py_exe)
ret = python.health_check(prefix, C.DEFAULT)
assert ret == (
f'virtualenv python version did not match created version:\n'
f'- actual version: <<error retrieving version from {py_exe}>>\n'
f'- expected version: {python._version_info(sys.executable)}\n'
)
def test_unhealthy_with_version_change(python_dir):
prefix, tmpdir = python_dir
python.install_environment(prefix, C.DEFAULT, ())
with open(prefix.path('py_env-default/pyvenv.cfg'), 'a+') as f:
f.write('version_info = 1.2.3\n')
ret = python.health_check(prefix, C.DEFAULT)
assert ret == (
f'virtualenv python version did not match created version:\n'
f'- actual version: {python._version_info(sys.executable)}\n'
f'- expected version: 1.2.3\n'
)
def test_unhealthy_system_version_changes(python_dir):
prefix, tmpdir = python_dir
python.install_environment(prefix, C.DEFAULT, ())
with open(prefix.path('py_env-default/pyvenv.cfg'), 'a') as f:
f.write('base-executable = /does/not/exist\n')
ret = python.health_check(prefix, C.DEFAULT)
assert ret == (
f'base executable python version does not match created version:\n'
f'- base-executable version: <<error retrieving version from /does/not/exist>>\n' # noqa: E501
f'- expected version: {python._version_info(sys.executable)}\n'
)
def test_unhealthy_old_virtualenv(python_dir):
prefix, tmpdir = python_dir
python.install_environment(prefix, C.DEFAULT, ())
# simulate "old" virtualenv by deleting this file
os.remove(prefix.path('py_env-default/pyvenv.cfg'))
ret = python.health_check(prefix, C.DEFAULT)
assert ret == 'pyvenv.cfg does not exist (old virtualenv?)'
def test_unhealthy_unexpected_pyvenv(python_dir):
prefix, tmpdir = python_dir
python.install_environment(prefix, C.DEFAULT, ())
# simulate a buggy environment build (I don't think this is possible)
with open(prefix.path('py_env-default/pyvenv.cfg'), 'w'):
pass
ret = python.health_check(prefix, C.DEFAULT)
assert ret == "created virtualenv's pyvenv.cfg is missing `version_info`"
def test_unhealthy_then_replaced(python_dir):
prefix, tmpdir = python_dir
python.install_environment(prefix, C.DEFAULT, ())
# simulate an exe which returns an old version
exe_name = win_exe('python')
py_exe = prefix.path(python.bin_dir('py_env-default'), exe_name)
os.rename(py_exe, f'{py_exe}.tmp')
with open(py_exe, 'w') as f:
f.write('#!/usr/bin/env bash\necho 1.2.3\n')
make_executable(py_exe)
# should be unhealthy due to version mismatch
ret = python.health_check(prefix, C.DEFAULT)
assert ret == (
f'virtualenv python version did not match created version:\n'
f'- actual version: 1.2.3\n'
f'- expected version: {python._version_info(sys.executable)}\n'
)
# now put the exe back and it should be healthy again
os.replace(f'{py_exe}.tmp', py_exe)
assert python.health_check(prefix, C.DEFAULT) is None
def test_language_versioned_python_hook(tmp_path):
setup_py = '''\
from setuptools import setup
setup(
name='example',
py_modules=['mod'],
entry_points={'console_scripts': ['myexe=mod:main']},
)
'''
tmp_path.joinpath('setup.py').write_text(setup_py)
tmp_path.joinpath('mod.py').write_text('def main(): print("ohai")')
# we patch this to force virtualenv executing with `-p` since we can't
# reliably have multiple pythons available in CI
with mock.patch.object(
python,
'_sys_executable_matches',
return_value=False,
):
assert run_language(tmp_path, python, 'myexe') == (0, b'ohai\n')
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