| """ |
| Test harness for the venv module. |
| |
| Copyright (C) 2011-2012 Vinay Sajip. |
| Licensed to the PSF under a contributor agreement. |
| """ |
| |
| import os |
| import os.path |
| import shutil |
| import subprocess |
| import sys |
| import tempfile |
| from test.support import (captured_stdout, captured_stderr, run_unittest, |
| can_symlink) |
| import unittest |
| import venv |
| |
| class BaseTest(unittest.TestCase): |
| """Base class for venv tests.""" |
| |
| 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%s' % sys.version[:3]) |
| 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): |
| shutil.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. |
| """ |
| shutil.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) |
| 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) |
| |
| @unittest.skipIf(sys.prefix != sys.base_prefix, 'Test not appropriate ' |
| 'in a venv') |
| 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 |
| shutil.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()) |
| |
| def test_overwrite_existing(self): |
| """ |
| Test control of overwriting an existing environment directory. |
| """ |
| self.assertRaises(ValueError, venv.create, self.env_dir) |
| builder = venv.EnvBuilder(clear=True) |
| builder.create(self.env_dir) |
| |
| def test_upgrade(self): |
| """ |
| Test upgrading an existing environment directory. |
| """ |
| builder = venv.EnvBuilder(upgrade=True) |
| 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. |
| @unittest.skipIf(sys.prefix != sys.base_prefix, 'Test not appropriate ' |
| 'in a venv') |
| def test_executable(self): |
| """ |
| Test that the sys.executable value is as expected. |
| """ |
| shutil.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. |
| """ |
| shutil.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()) |
| |
| def test_main(): |
| run_unittest(BasicTest) |
| |
| if __name__ == "__main__": |
| test_main() |