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 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', ('python3.6', 'python3', 'python')) def test_sys_executable_matches(v): with mock.patch.object(sys, 'version_info', (3, 6, 7)): 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, 6, 7)): 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/python3.6m', '/usr/bin/python3.6m', 'python3.6m'), ('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.healthy(prefix, C.DEFAULT) is True # even if a `types.py` file exists, should still be healthy tmpdir.join('types.py').ensure() assert python.healthy(prefix, C.DEFAULT) is True 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.healthy(prefix, C.DEFAULT) is True def test_unhealthy_python_goes_missing(python_dir): prefix, tmpdir = python_dir python.install_environment(prefix, C.DEFAULT, ()) exe_name = 'python' if sys.platform != 'win32' else 'python.exe' py_exe = prefix.path(python.bin_dir('py_env-default'), exe_name) os.remove(py_exe) assert python.healthy(prefix, C.DEFAULT) is False 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'), 'w') as f: f.write('version_info = 1.2.3\n') assert python.healthy(prefix, C.DEFAULT) is False 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') assert python.healthy(prefix, C.DEFAULT) is False 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')) assert python.healthy(prefix, C.DEFAULT) is False 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 = 'python.exe' if sys.platform == 'win32' else '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 assert python.healthy(prefix, C.DEFAULT) is False # now put the exe back and it should be healthy again os.replace(f'{py_exe}.tmp', py_exe) assert python.healthy(prefix, C.DEFAULT) is True