| """ |
| Test harness for the venv module. |
| |
| Copyright (C) 2011-2012 Vinay Sajip. |
| Licensed to the PSF under a contributor agreement. |
| """ |
| |
| import ensurepip |
| import os |
| import os.path |
| import re |
| import struct |
| import subprocess |
| import sys |
| import tempfile |
| from test.support import (captured_stdout, captured_stderr, |
| can_symlink, EnvironmentVarGuard, rmtree) |
| import unittest |
| import venv |
| |
| |
| try: |
| import threading |
| except ImportError: |
| threading = None |
| |
| try: |
| import ctypes |
| except ImportError: |
| ctypes = None |
| |
| skipInVenv = unittest.skipIf(sys.prefix != sys.base_prefix, |
| 'Test not appropriate in a venv') |
| |
| class BaseTest(unittest.TestCase): |
| """Base class for venv tests.""" |
| maxDiff = 80 * 50 |
| |
| def setUp(self): |
| self.env_dir = os.path.realpath(tempfile.mkdtemp()) |
| if os.name == 'nt': |
| self.bindir = 'Scripts' |
| self.lib = ('Lib',) |
| self.include = 'Include' |
| else: |
| self.bindir = 'bin' |
| self.lib = ('lib', 'python%d.%d' % sys.version_info[:2]) |
| self.include = 'include' |
| if sys.platform == 'darwin' and '__PYVENV_LAUNCHER__' in os.environ: |
| executable = os.environ['__PYVENV_LAUNCHER__'] |
| else: |
| executable = sys.executable |
| self.exe = os.path.split(executable)[-1] |
| |
| def tearDown(self): |
| rmtree(self.env_dir) |
| |
| def run_with_capture(self, func, *args, **kwargs): |
| with captured_stdout() as output: |
| with captured_stderr() as error: |
| func(*args, **kwargs) |
| return output.getvalue(), error.getvalue() |
| |
| def get_env_file(self, *args): |
| return os.path.join(self.env_dir, *args) |
| |
| def get_text_file_contents(self, *args): |
| with open(self.get_env_file(*args), 'r') as f: |
| result = f.read() |
| return result |
| |
| class BasicTest(BaseTest): |
| """Test venv module functionality.""" |
| |
| def isdir(self, *args): |
| fn = self.get_env_file(*args) |
| self.assertTrue(os.path.isdir(fn)) |
| |
| def test_defaults(self): |
| """ |
| Test the create function with default arguments. |
| """ |
| rmtree(self.env_dir) |
| self.run_with_capture(venv.create, self.env_dir) |
| self.isdir(self.bindir) |
| self.isdir(self.include) |
| self.isdir(*self.lib) |
| # Issue 21197 |
| p = self.get_env_file('lib64') |
| conditions = ((struct.calcsize('P') == 8) and (os.name == 'posix') and |
| (sys.platform != 'darwin')) |
| if conditions: |
| self.assertTrue(os.path.islink(p)) |
| else: |
| self.assertFalse(os.path.exists(p)) |
| data = self.get_text_file_contents('pyvenv.cfg') |
| if sys.platform == 'darwin' and ('__PYVENV_LAUNCHER__' |
| in os.environ): |
| executable = os.environ['__PYVENV_LAUNCHER__'] |
| else: |
| executable = sys.executable |
| path = os.path.dirname(executable) |
| self.assertIn('home = %s' % path, data) |
| fn = self.get_env_file(self.bindir, self.exe) |
| if not os.path.exists(fn): # diagnostics for Windows buildbot failures |
| bd = self.get_env_file(self.bindir) |
| print('Contents of %r:' % bd) |
| print(' %r' % os.listdir(bd)) |
| self.assertTrue(os.path.exists(fn), 'File %r should exist.' % fn) |
| |
| def test_prompt(self): |
| env_name = os.path.split(self.env_dir)[1] |
| |
| builder = venv.EnvBuilder() |
| context = builder.ensure_directories(self.env_dir) |
| self.assertEqual(context.prompt, '(%s) ' % env_name) |
| |
| builder = venv.EnvBuilder(prompt='My prompt') |
| context = builder.ensure_directories(self.env_dir) |
| self.assertEqual(context.prompt, '(My prompt) ') |
| |
| @skipInVenv |
| def test_prefixes(self): |
| """ |
| Test that the prefix values are as expected. |
| """ |
| #check our prefixes |
| self.assertEqual(sys.base_prefix, sys.prefix) |
| self.assertEqual(sys.base_exec_prefix, sys.exec_prefix) |
| |
| # check a venv's prefixes |
| rmtree(self.env_dir) |
| self.run_with_capture(venv.create, self.env_dir) |
| envpy = os.path.join(self.env_dir, self.bindir, self.exe) |
| cmd = [envpy, '-c', None] |
| for prefix, expected in ( |
| ('prefix', self.env_dir), |
| ('prefix', self.env_dir), |
| ('base_prefix', sys.prefix), |
| ('base_exec_prefix', sys.exec_prefix)): |
| cmd[2] = 'import sys; print(sys.%s)' % prefix |
| p = subprocess.Popen(cmd, stdout=subprocess.PIPE, |
| stderr=subprocess.PIPE) |
| out, err = p.communicate() |
| self.assertEqual(out.strip(), expected.encode()) |
| |
| if sys.platform == 'win32': |
| ENV_SUBDIRS = ( |
| ('Scripts',), |
| ('Include',), |
| ('Lib',), |
| ('Lib', 'site-packages'), |
| ) |
| else: |
| ENV_SUBDIRS = ( |
| ('bin',), |
| ('include',), |
| ('lib',), |
| ('lib', 'python%d.%d' % sys.version_info[:2]), |
| ('lib', 'python%d.%d' % sys.version_info[:2], 'site-packages'), |
| ) |
| |
| def create_contents(self, paths, filename): |
| """ |
| Create some files in the environment which are unrelated |
| to the virtual environment. |
| """ |
| for subdirs in paths: |
| d = os.path.join(self.env_dir, *subdirs) |
| os.mkdir(d) |
| fn = os.path.join(d, filename) |
| with open(fn, 'wb') as f: |
| f.write(b'Still here?') |
| |
| def test_overwrite_existing(self): |
| """ |
| Test creating environment in an existing directory. |
| """ |
| self.create_contents(self.ENV_SUBDIRS, 'foo') |
| venv.create(self.env_dir) |
| for subdirs in self.ENV_SUBDIRS: |
| fn = os.path.join(self.env_dir, *(subdirs + ('foo',))) |
| self.assertTrue(os.path.exists(fn)) |
| with open(fn, 'rb') as f: |
| self.assertEqual(f.read(), b'Still here?') |
| |
| builder = venv.EnvBuilder(clear=True) |
| builder.create(self.env_dir) |
| for subdirs in self.ENV_SUBDIRS: |
| fn = os.path.join(self.env_dir, *(subdirs + ('foo',))) |
| self.assertFalse(os.path.exists(fn)) |
| |
| def clear_directory(self, path): |
| for fn in os.listdir(path): |
| fn = os.path.join(path, fn) |
| if os.path.islink(fn) or os.path.isfile(fn): |
| os.remove(fn) |
| elif os.path.isdir(fn): |
| rmtree(fn) |
| |
| def test_unoverwritable_fails(self): |
| #create a file clashing with directories in the env dir |
| for paths in self.ENV_SUBDIRS[:3]: |
| fn = os.path.join(self.env_dir, *paths) |
| with open(fn, 'wb') as f: |
| f.write(b'') |
| self.assertRaises((ValueError, OSError), venv.create, self.env_dir) |
| self.clear_directory(self.env_dir) |
| |
| def test_upgrade(self): |
| """ |
| Test upgrading an existing environment directory. |
| """ |
| # See Issue #21643: the loop needs to run twice to ensure |
| # that everything works on the upgrade (the first run just creates |
| # the venv). |
| for upgrade in (False, True): |
| builder = venv.EnvBuilder(upgrade=upgrade) |
| self.run_with_capture(builder.create, self.env_dir) |
| self.isdir(self.bindir) |
| self.isdir(self.include) |
| self.isdir(*self.lib) |
| fn = self.get_env_file(self.bindir, self.exe) |
| if not os.path.exists(fn): |
| # diagnostics for Windows buildbot failures |
| bd = self.get_env_file(self.bindir) |
| print('Contents of %r:' % bd) |
| print(' %r' % os.listdir(bd)) |
| self.assertTrue(os.path.exists(fn), 'File %r should exist.' % fn) |
| |
| def test_isolation(self): |
| """ |
| Test isolation from system site-packages |
| """ |
| for ssp, s in ((True, 'true'), (False, 'false')): |
| builder = venv.EnvBuilder(clear=True, system_site_packages=ssp) |
| builder.create(self.env_dir) |
| data = self.get_text_file_contents('pyvenv.cfg') |
| self.assertIn('include-system-site-packages = %s\n' % s, data) |
| |
| @unittest.skipUnless(can_symlink(), 'Needs symlinks') |
| def test_symlinking(self): |
| """ |
| Test symlinking works as expected |
| """ |
| for usl in (False, True): |
| builder = venv.EnvBuilder(clear=True, symlinks=usl) |
| builder.create(self.env_dir) |
| fn = self.get_env_file(self.bindir, self.exe) |
| # Don't test when False, because e.g. 'python' is always |
| # symlinked to 'python3.3' in the env, even when symlinking in |
| # general isn't wanted. |
| if usl: |
| self.assertTrue(os.path.islink(fn)) |
| |
| # If a venv is created from a source build and that venv is used to |
| # run the test, the pyvenv.cfg in the venv created in the test will |
| # point to the venv being used to run the test, and we lose the link |
| # to the source build - so Python can't initialise properly. |
| @skipInVenv |
| def test_executable(self): |
| """ |
| Test that the sys.executable value is as expected. |
| """ |
| rmtree(self.env_dir) |
| self.run_with_capture(venv.create, self.env_dir) |
| envpy = os.path.join(os.path.realpath(self.env_dir), self.bindir, self.exe) |
| cmd = [envpy, '-c', 'import sys; print(sys.executable)'] |
| p = subprocess.Popen(cmd, stdout=subprocess.PIPE, |
| stderr=subprocess.PIPE) |
| out, err = p.communicate() |
| self.assertEqual(out.strip(), envpy.encode()) |
| |
| @unittest.skipUnless(can_symlink(), 'Needs symlinks') |
| def test_executable_symlinks(self): |
| """ |
| Test that the sys.executable value is as expected. |
| """ |
| rmtree(self.env_dir) |
| builder = venv.EnvBuilder(clear=True, symlinks=True) |
| builder.create(self.env_dir) |
| envpy = os.path.join(os.path.realpath(self.env_dir), self.bindir, self.exe) |
| cmd = [envpy, '-c', 'import sys; print(sys.executable)'] |
| p = subprocess.Popen(cmd, stdout=subprocess.PIPE, |
| stderr=subprocess.PIPE) |
| out, err = p.communicate() |
| self.assertEqual(out.strip(), envpy.encode()) |
| |
| |
| @skipInVenv |
| class EnsurePipTest(BaseTest): |
| """Test venv module installation of pip.""" |
| def assert_pip_not_installed(self): |
| envpy = os.path.join(os.path.realpath(self.env_dir), |
| self.bindir, self.exe) |
| try_import = 'try:\n import pip\nexcept ImportError:\n print("OK")' |
| cmd = [envpy, '-c', try_import] |
| p = subprocess.Popen(cmd, stdout=subprocess.PIPE, |
| stderr=subprocess.PIPE) |
| out, err = p.communicate() |
| # We force everything to text, so unittest gives the detailed diff |
| # if we get unexpected results |
| err = err.decode("latin-1") # Force to text, prevent decoding errors |
| self.assertEqual(err, "") |
| out = out.decode("latin-1") # Force to text, prevent decoding errors |
| self.assertEqual(out.strip(), "OK") |
| |
| |
| def test_no_pip_by_default(self): |
| rmtree(self.env_dir) |
| self.run_with_capture(venv.create, self.env_dir) |
| self.assert_pip_not_installed() |
| |
| def test_explicit_no_pip(self): |
| rmtree(self.env_dir) |
| self.run_with_capture(venv.create, self.env_dir, with_pip=False) |
| self.assert_pip_not_installed() |
| |
| def test_devnull(self): |
| # Fix for issue #20053 uses os.devnull to force a config file to |
| # appear empty. However http://bugs.python.org/issue20541 means |
| # that doesn't currently work properly on Windows. Once that is |
| # fixed, the "win_location" part of test_with_pip should be restored |
| with open(os.devnull, "rb") as f: |
| self.assertEqual(f.read(), b"") |
| |
| # Issue #20541: os.path.exists('nul') is False on Windows |
| if os.devnull.lower() == 'nul': |
| self.assertFalse(os.path.exists(os.devnull)) |
| else: |
| self.assertTrue(os.path.exists(os.devnull)) |
| |
| def do_test_with_pip(self, system_site_packages): |
| rmtree(self.env_dir) |
| with EnvironmentVarGuard() as envvars: |
| # pip's cross-version compatibility may trigger deprecation |
| # warnings in current versions of Python. Ensure related |
| # environment settings don't cause venv to fail. |
| envvars["PYTHONWARNINGS"] = "e" |
| # ensurepip is different enough from a normal pip invocation |
| # that we want to ensure it ignores the normal pip environment |
| # variable settings. We set PIP_NO_INSTALL here specifically |
| # to check that ensurepip (and hence venv) ignores it. |
| # See http://bugs.python.org/issue19734 |
| envvars["PIP_NO_INSTALL"] = "1" |
| # Also check that we ignore the pip configuration file |
| # See http://bugs.python.org/issue20053 |
| with tempfile.TemporaryDirectory() as home_dir: |
| envvars["HOME"] = home_dir |
| bad_config = "[global]\nno-install=1" |
| # Write to both config file names on all platforms to reduce |
| # cross-platform variation in test code behaviour |
| win_location = ("pip", "pip.ini") |
| posix_location = (".pip", "pip.conf") |
| # Skips win_location due to http://bugs.python.org/issue20541 |
| for dirname, fname in (posix_location,): |
| dirpath = os.path.join(home_dir, dirname) |
| os.mkdir(dirpath) |
| fpath = os.path.join(dirpath, fname) |
| with open(fpath, 'w') as f: |
| f.write(bad_config) |
| |
| # Actually run the create command with all that unhelpful |
| # config in place to ensure we ignore it |
| try: |
| self.run_with_capture(venv.create, self.env_dir, |
| system_site_packages=system_site_packages, |
| with_pip=True) |
| except subprocess.CalledProcessError as exc: |
| # The output this produces can be a little hard to read, |
| # but at least it has all the details |
| details = exc.output.decode(errors="replace") |
| msg = "{}\n\n**Subprocess Output**\n{}" |
| self.fail(msg.format(exc, details)) |
| # Ensure pip is available in the virtual environment |
| envpy = os.path.join(os.path.realpath(self.env_dir), self.bindir, self.exe) |
| cmd = [envpy, '-Im', 'pip', '--version'] |
| p = subprocess.Popen(cmd, stdout=subprocess.PIPE, |
| stderr=subprocess.PIPE) |
| out, err = p.communicate() |
| # We force everything to text, so unittest gives the detailed diff |
| # if we get unexpected results |
| err = err.decode("latin-1") # Force to text, prevent decoding errors |
| self.assertEqual(err, "") |
| out = out.decode("latin-1") # Force to text, prevent decoding errors |
| expected_version = "pip {}".format(ensurepip.version()) |
| self.assertEqual(out[:len(expected_version)], expected_version) |
| env_dir = os.fsencode(self.env_dir).decode("latin-1") |
| self.assertIn(env_dir, out) |
| |
| # http://bugs.python.org/issue19728 |
| # Check the private uninstall command provided for the Windows |
| # installers works (at least in a virtual environment) |
| cmd = [envpy, '-Im', 'ensurepip._uninstall'] |
| with EnvironmentVarGuard() as envvars: |
| p = subprocess.Popen(cmd, stdout=subprocess.PIPE, |
| stderr=subprocess.PIPE) |
| out, err = p.communicate() |
| # We force everything to text, so unittest gives the detailed diff |
| # if we get unexpected results |
| err = err.decode("latin-1") # Force to text, prevent decoding errors |
| # Ignore the warning: |
| # "The directory '$HOME/.cache/pip/http' or its parent directory |
| # is not owned by the current user and the cache has been disabled. |
| # Please check the permissions and owner of that directory. If |
| # executing pip with sudo, you may want sudo's -H flag." |
| # where $HOME is replaced by the HOME environment variable. |
| err = re.sub("^The directory .* or its parent directory is not owned " |
| "by the current user .*$", "", err, flags=re.MULTILINE) |
| self.assertEqual(err.rstrip(), "") |
| # Being fairly specific regarding the expected behaviour for the |
| # initial bundling phase in Python 3.4. If the output changes in |
| # future pip versions, this test can likely be relaxed further. |
| out = out.decode("latin-1") # Force to text, prevent decoding errors |
| self.assertIn("Successfully uninstalled pip", out) |
| self.assertIn("Successfully uninstalled setuptools", out) |
| # Check pip is now gone from the virtual environment. This only |
| # applies in the system_site_packages=False case, because in the |
| # other case, pip may still be available in the system site-packages |
| if not system_site_packages: |
| self.assert_pip_not_installed() |
| |
| @unittest.skipUnless(threading, 'some dependencies of pip import threading' |
| ' module unconditionally') |
| # Issue #26610: pip/pep425tags.py requires ctypes |
| @unittest.skipUnless(ctypes, 'pip requires ctypes') |
| def test_with_pip(self): |
| self.do_test_with_pip(False) |
| self.do_test_with_pip(True) |
| |
| if __name__ == "__main__": |
| unittest.main() |