689 lines
24 KiB
Python
689 lines
24 KiB
Python
import errno
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import importlib
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import io
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import os
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import shutil
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import socket
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import stat
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import subprocess
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import sys
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import tempfile
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import textwrap
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import time
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import unittest
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from test import support
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from test.support import import_helper
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from test.support import os_helper
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from test.support import script_helper
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from test.support import socket_helper
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from test.support import warnings_helper
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TESTFN = os_helper.TESTFN
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class TestSupport(unittest.TestCase):
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def test_import_module(self):
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import_helper.import_module("ftplib")
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self.assertRaises(unittest.SkipTest,
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import_helper.import_module, "foo")
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def test_import_fresh_module(self):
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import_helper.import_fresh_module("ftplib")
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def test_get_attribute(self):
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self.assertEqual(support.get_attribute(self, "test_get_attribute"),
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self.test_get_attribute)
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self.assertRaises(unittest.SkipTest, support.get_attribute, self, "foo")
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@unittest.skip("failing buildbots")
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def test_get_original_stdout(self):
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self.assertEqual(support.get_original_stdout(), sys.stdout)
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def test_unload(self):
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import sched
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self.assertIn("sched", sys.modules)
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import_helper.unload("sched")
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self.assertNotIn("sched", sys.modules)
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def test_unlink(self):
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with open(TESTFN, "w") as f:
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pass
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os_helper.unlink(TESTFN)
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self.assertFalse(os.path.exists(TESTFN))
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os_helper.unlink(TESTFN)
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def test_rmtree(self):
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dirpath = os_helper.TESTFN + 'd'
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subdirpath = os.path.join(dirpath, 'subdir')
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os.mkdir(dirpath)
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os.mkdir(subdirpath)
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os_helper.rmtree(dirpath)
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self.assertFalse(os.path.exists(dirpath))
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with support.swap_attr(support, 'verbose', 0):
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os_helper.rmtree(dirpath)
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os.mkdir(dirpath)
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os.mkdir(subdirpath)
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os.chmod(dirpath, stat.S_IRUSR|stat.S_IXUSR)
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with support.swap_attr(support, 'verbose', 0):
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os_helper.rmtree(dirpath)
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self.assertFalse(os.path.exists(dirpath))
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os.mkdir(dirpath)
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os.mkdir(subdirpath)
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os.chmod(dirpath, 0)
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with support.swap_attr(support, 'verbose', 0):
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os_helper.rmtree(dirpath)
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self.assertFalse(os.path.exists(dirpath))
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def test_forget(self):
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mod_filename = TESTFN + '.py'
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with open(mod_filename, 'w') as f:
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print('foo = 1', file=f)
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sys.path.insert(0, os.curdir)
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importlib.invalidate_caches()
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try:
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mod = __import__(TESTFN)
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self.assertIn(TESTFN, sys.modules)
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import_helper.forget(TESTFN)
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self.assertNotIn(TESTFN, sys.modules)
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finally:
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del sys.path[0]
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os_helper.unlink(mod_filename)
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os_helper.rmtree('__pycache__')
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def test_HOST(self):
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s = socket.create_server((socket_helper.HOST, 0))
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s.close()
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def test_find_unused_port(self):
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port = socket_helper.find_unused_port()
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s = socket.create_server((socket_helper.HOST, port))
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s.close()
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def test_bind_port(self):
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s = socket.socket()
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socket_helper.bind_port(s)
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s.listen()
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s.close()
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# Tests for temp_dir()
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def test_temp_dir(self):
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"""Test that temp_dir() creates and destroys its directory."""
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parent_dir = tempfile.mkdtemp()
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parent_dir = os.path.realpath(parent_dir)
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try:
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path = os.path.join(parent_dir, 'temp')
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self.assertFalse(os.path.isdir(path))
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with os_helper.temp_dir(path) as temp_path:
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self.assertEqual(temp_path, path)
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self.assertTrue(os.path.isdir(path))
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self.assertFalse(os.path.isdir(path))
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finally:
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os_helper.rmtree(parent_dir)
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def test_temp_dir__path_none(self):
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"""Test passing no path."""
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with os_helper.temp_dir() as temp_path:
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self.assertTrue(os.path.isdir(temp_path))
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self.assertFalse(os.path.isdir(temp_path))
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def test_temp_dir__existing_dir__quiet_default(self):
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"""Test passing a directory that already exists."""
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def call_temp_dir(path):
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with os_helper.temp_dir(path) as temp_path:
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raise Exception("should not get here")
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path = tempfile.mkdtemp()
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path = os.path.realpath(path)
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try:
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self.assertTrue(os.path.isdir(path))
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self.assertRaises(FileExistsError, call_temp_dir, path)
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# Make sure temp_dir did not delete the original directory.
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self.assertTrue(os.path.isdir(path))
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finally:
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shutil.rmtree(path)
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def test_temp_dir__existing_dir__quiet_true(self):
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"""Test passing a directory that already exists with quiet=True."""
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path = tempfile.mkdtemp()
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path = os.path.realpath(path)
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try:
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with warnings_helper.check_warnings() as recorder:
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with os_helper.temp_dir(path, quiet=True) as temp_path:
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self.assertEqual(path, temp_path)
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warnings = [str(w.message) for w in recorder.warnings]
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# Make sure temp_dir did not delete the original directory.
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self.assertTrue(os.path.isdir(path))
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finally:
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shutil.rmtree(path)
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self.assertEqual(len(warnings), 1, warnings)
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warn = warnings[0]
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self.assertTrue(warn.startswith(f'tests may fail, unable to create '
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f'temporary directory {path!r}: '),
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warn)
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@unittest.skipUnless(hasattr(os, "fork"), "test requires os.fork")
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def test_temp_dir__forked_child(self):
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"""Test that a forked child process does not remove the directory."""
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# See bpo-30028 for details.
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# Run the test as an external script, because it uses fork.
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script_helper.assert_python_ok("-c", textwrap.dedent("""
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import os
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from test import support
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from test.support import os_helper
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with os_helper.temp_cwd() as temp_path:
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pid = os.fork()
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if pid != 0:
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# parent process
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# wait for the child to terminate
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support.wait_process(pid, exitcode=0)
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# Make sure that temp_path is still present. When the child
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# process leaves the 'temp_cwd'-context, the __exit__()-
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# method of the context must not remove the temporary
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# directory.
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if not os.path.isdir(temp_path):
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raise AssertionError("Child removed temp_path.")
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"""))
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# Tests for change_cwd()
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def test_change_cwd(self):
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original_cwd = os.getcwd()
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with os_helper.temp_dir() as temp_path:
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with os_helper.change_cwd(temp_path) as new_cwd:
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self.assertEqual(new_cwd, temp_path)
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self.assertEqual(os.getcwd(), new_cwd)
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self.assertEqual(os.getcwd(), original_cwd)
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def test_change_cwd__non_existent_dir(self):
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"""Test passing a non-existent directory."""
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original_cwd = os.getcwd()
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def call_change_cwd(path):
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with os_helper.change_cwd(path) as new_cwd:
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raise Exception("should not get here")
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with os_helper.temp_dir() as parent_dir:
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non_existent_dir = os.path.join(parent_dir, 'does_not_exist')
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self.assertRaises(FileNotFoundError, call_change_cwd,
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non_existent_dir)
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self.assertEqual(os.getcwd(), original_cwd)
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def test_change_cwd__non_existent_dir__quiet_true(self):
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"""Test passing a non-existent directory with quiet=True."""
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original_cwd = os.getcwd()
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with os_helper.temp_dir() as parent_dir:
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bad_dir = os.path.join(parent_dir, 'does_not_exist')
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with warnings_helper.check_warnings() as recorder:
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with os_helper.change_cwd(bad_dir, quiet=True) as new_cwd:
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self.assertEqual(new_cwd, original_cwd)
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self.assertEqual(os.getcwd(), new_cwd)
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warnings = [str(w.message) for w in recorder.warnings]
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self.assertEqual(len(warnings), 1, warnings)
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warn = warnings[0]
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self.assertTrue(warn.startswith(f'tests may fail, unable to change '
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f'the current working directory '
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f'to {bad_dir!r}: '),
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warn)
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# Tests for change_cwd()
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def test_change_cwd__chdir_warning(self):
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"""Check the warning message when os.chdir() fails."""
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path = TESTFN + '_does_not_exist'
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with warnings_helper.check_warnings() as recorder:
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with os_helper.change_cwd(path=path, quiet=True):
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pass
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messages = [str(w.message) for w in recorder.warnings]
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self.assertEqual(len(messages), 1, messages)
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msg = messages[0]
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self.assertTrue(msg.startswith(f'tests may fail, unable to change '
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f'the current working directory '
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f'to {path!r}: '),
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msg)
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# Tests for temp_cwd()
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def test_temp_cwd(self):
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here = os.getcwd()
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with os_helper.temp_cwd(name=TESTFN):
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self.assertEqual(os.path.basename(os.getcwd()), TESTFN)
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self.assertFalse(os.path.exists(TESTFN))
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self.assertEqual(os.getcwd(), here)
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def test_temp_cwd__name_none(self):
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"""Test passing None to temp_cwd()."""
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original_cwd = os.getcwd()
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with os_helper.temp_cwd(name=None) as new_cwd:
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self.assertNotEqual(new_cwd, original_cwd)
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self.assertTrue(os.path.isdir(new_cwd))
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self.assertEqual(os.getcwd(), new_cwd)
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self.assertEqual(os.getcwd(), original_cwd)
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def test_sortdict(self):
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self.assertEqual(support.sortdict({3:3, 2:2, 1:1}), "{1: 1, 2: 2, 3: 3}")
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def test_make_bad_fd(self):
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fd = os_helper.make_bad_fd()
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with self.assertRaises(OSError) as cm:
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os.write(fd, b"foo")
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self.assertEqual(cm.exception.errno, errno.EBADF)
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def test_check_syntax_error(self):
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support.check_syntax_error(self, "def class", lineno=1, offset=5)
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with self.assertRaises(AssertionError):
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support.check_syntax_error(self, "x=1")
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def test_CleanImport(self):
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import importlib
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with import_helper.CleanImport("asyncore"):
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importlib.import_module("asyncore")
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def test_DirsOnSysPath(self):
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with import_helper.DirsOnSysPath('foo', 'bar'):
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self.assertIn("foo", sys.path)
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self.assertIn("bar", sys.path)
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self.assertNotIn("foo", sys.path)
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self.assertNotIn("bar", sys.path)
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def test_captured_stdout(self):
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with support.captured_stdout() as stdout:
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print("hello")
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self.assertEqual(stdout.getvalue(), "hello\n")
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def test_captured_stderr(self):
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with support.captured_stderr() as stderr:
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print("hello", file=sys.stderr)
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self.assertEqual(stderr.getvalue(), "hello\n")
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def test_captured_stdin(self):
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with support.captured_stdin() as stdin:
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stdin.write('hello\n')
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stdin.seek(0)
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# call test code that consumes from sys.stdin
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captured = input()
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self.assertEqual(captured, "hello")
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def test_gc_collect(self):
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support.gc_collect()
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def test_python_is_optimized(self):
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self.assertIsInstance(support.python_is_optimized(), bool)
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def test_swap_attr(self):
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class Obj:
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pass
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obj = Obj()
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obj.x = 1
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with support.swap_attr(obj, "x", 5) as x:
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self.assertEqual(obj.x, 5)
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self.assertEqual(x, 1)
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self.assertEqual(obj.x, 1)
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with support.swap_attr(obj, "y", 5) as y:
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self.assertEqual(obj.y, 5)
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self.assertIsNone(y)
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self.assertFalse(hasattr(obj, 'y'))
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with support.swap_attr(obj, "y", 5):
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del obj.y
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self.assertFalse(hasattr(obj, 'y'))
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def test_swap_item(self):
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D = {"x":1}
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with support.swap_item(D, "x", 5) as x:
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self.assertEqual(D["x"], 5)
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self.assertEqual(x, 1)
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self.assertEqual(D["x"], 1)
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with support.swap_item(D, "y", 5) as y:
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self.assertEqual(D["y"], 5)
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self.assertIsNone(y)
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self.assertNotIn("y", D)
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with support.swap_item(D, "y", 5):
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del D["y"]
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self.assertNotIn("y", D)
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class RefClass:
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attribute1 = None
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attribute2 = None
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_hidden_attribute1 = None
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__magic_1__ = None
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class OtherClass:
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attribute2 = None
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attribute3 = None
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__magic_1__ = None
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__magic_2__ = None
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def test_detect_api_mismatch(self):
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missing_items = support.detect_api_mismatch(self.RefClass,
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self.OtherClass)
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self.assertEqual({'attribute1'}, missing_items)
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missing_items = support.detect_api_mismatch(self.OtherClass,
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self.RefClass)
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self.assertEqual({'attribute3', '__magic_2__'}, missing_items)
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def test_detect_api_mismatch__ignore(self):
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ignore = ['attribute1', 'attribute3', '__magic_2__', 'not_in_either']
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missing_items = support.detect_api_mismatch(
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self.RefClass, self.OtherClass, ignore=ignore)
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self.assertEqual(set(), missing_items)
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missing_items = support.detect_api_mismatch(
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self.OtherClass, self.RefClass, ignore=ignore)
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self.assertEqual(set(), missing_items)
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def test_check__all__(self):
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extra = {'tempdir'}
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not_exported = {'template'}
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support.check__all__(self,
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tempfile,
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extra=extra,
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not_exported=not_exported)
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extra = {'TextTestResult', 'installHandler'}
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not_exported = {'load_tests', "TestProgram", "BaseTestSuite"}
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support.check__all__(self,
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unittest,
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("unittest.result", "unittest.case",
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"unittest.suite", "unittest.loader",
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"unittest.main", "unittest.runner",
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"unittest.signals", "unittest.async_case"),
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extra=extra,
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not_exported=not_exported)
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self.assertRaises(AssertionError, support.check__all__, self, unittest)
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@unittest.skipUnless(hasattr(os, 'waitpid') and hasattr(os, 'WNOHANG'),
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'need os.waitpid() and os.WNOHANG')
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def test_reap_children(self):
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# Make sure that there is no other pending child process
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support.reap_children()
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# Create a child process
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pid = os.fork()
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if pid == 0:
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# child process: do nothing, just exit
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os._exit(0)
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t0 = time.monotonic()
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deadline = time.monotonic() + support.SHORT_TIMEOUT
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was_altered = support.environment_altered
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try:
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support.environment_altered = False
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stderr = io.StringIO()
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while True:
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if time.monotonic() > deadline:
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self.fail("timeout")
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old_stderr = sys.__stderr__
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try:
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sys.__stderr__ = stderr
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support.reap_children()
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finally:
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sys.__stderr__ = old_stderr
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# Use environment_altered to check if reap_children() found
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# the child process
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if support.environment_altered:
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break
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# loop until the child process completed
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time.sleep(0.100)
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msg = "Warning -- reap_children() reaped child process %s" % pid
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self.assertIn(msg, stderr.getvalue())
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self.assertTrue(support.environment_altered)
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finally:
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support.environment_altered = was_altered
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# Just in case, check again that there is no other
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# pending child process
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support.reap_children()
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def check_options(self, args, func, expected=None):
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code = f'from test.support import {func}; print(repr({func}()))'
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cmd = [sys.executable, *args, '-c', code]
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env = {key: value for key, value in os.environ.items()
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if not key.startswith('PYTHON')}
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proc = subprocess.run(cmd,
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stdout=subprocess.PIPE,
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stderr=subprocess.DEVNULL,
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universal_newlines=True,
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env=env)
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if expected is None:
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expected = args
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self.assertEqual(proc.stdout.rstrip(), repr(expected))
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self.assertEqual(proc.returncode, 0)
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def test_args_from_interpreter_flags(self):
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# Test test.support.args_from_interpreter_flags()
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for opts in (
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# no option
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[],
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# single option
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['-B'],
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['-s'],
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['-S'],
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['-E'],
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['-v'],
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['-b'],
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['-q'],
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['-I'],
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# same option multiple times
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['-bb'],
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['-vvv'],
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# -W options
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['-Wignore'],
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# -X options
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['-X', 'dev'],
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['-Wignore', '-X', 'dev'],
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['-X', 'faulthandler'],
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['-X', 'importtime'],
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['-X', 'showrefcount'],
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|
['-X', 'tracemalloc'],
|
|
['-X', 'tracemalloc=3'],
|
|
):
|
|
with self.subTest(opts=opts):
|
|
self.check_options(opts, 'args_from_interpreter_flags')
|
|
|
|
self.check_options(['-I', '-E', '-s'], 'args_from_interpreter_flags',
|
|
['-I'])
|
|
|
|
def test_optim_args_from_interpreter_flags(self):
|
|
# Test test.support.optim_args_from_interpreter_flags()
|
|
for opts in (
|
|
# no option
|
|
[],
|
|
['-O'],
|
|
['-OO'],
|
|
['-OOOO'],
|
|
):
|
|
with self.subTest(opts=opts):
|
|
self.check_options(opts, 'optim_args_from_interpreter_flags')
|
|
|
|
def test_match_test(self):
|
|
class Test:
|
|
def __init__(self, test_id):
|
|
self.test_id = test_id
|
|
|
|
def id(self):
|
|
return self.test_id
|
|
|
|
test_access = Test('test.test_os.FileTests.test_access')
|
|
test_chdir = Test('test.test_os.Win32ErrorTests.test_chdir')
|
|
|
|
# Test acceptance
|
|
with support.swap_attr(support, '_match_test_func', None):
|
|
# match all
|
|
support.set_match_tests([])
|
|
self.assertTrue(support.match_test(test_access))
|
|
self.assertTrue(support.match_test(test_chdir))
|
|
|
|
# match all using None
|
|
support.set_match_tests(None, None)
|
|
self.assertTrue(support.match_test(test_access))
|
|
self.assertTrue(support.match_test(test_chdir))
|
|
|
|
# match the full test identifier
|
|
support.set_match_tests([test_access.id()], None)
|
|
self.assertTrue(support.match_test(test_access))
|
|
self.assertFalse(support.match_test(test_chdir))
|
|
|
|
# match the module name
|
|
support.set_match_tests(['test_os'], None)
|
|
self.assertTrue(support.match_test(test_access))
|
|
self.assertTrue(support.match_test(test_chdir))
|
|
|
|
# Test '*' pattern
|
|
support.set_match_tests(['test_*'], None)
|
|
self.assertTrue(support.match_test(test_access))
|
|
self.assertTrue(support.match_test(test_chdir))
|
|
|
|
# Test case sensitivity
|
|
support.set_match_tests(['filetests'], None)
|
|
self.assertFalse(support.match_test(test_access))
|
|
support.set_match_tests(['FileTests'], None)
|
|
self.assertTrue(support.match_test(test_access))
|
|
|
|
# Test pattern containing '.' and a '*' metacharacter
|
|
support.set_match_tests(['*test_os.*.test_*'], None)
|
|
self.assertTrue(support.match_test(test_access))
|
|
self.assertTrue(support.match_test(test_chdir))
|
|
|
|
# Multiple patterns
|
|
support.set_match_tests([test_access.id(), test_chdir.id()], None)
|
|
self.assertTrue(support.match_test(test_access))
|
|
self.assertTrue(support.match_test(test_chdir))
|
|
|
|
support.set_match_tests(['test_access', 'DONTMATCH'], None)
|
|
self.assertTrue(support.match_test(test_access))
|
|
self.assertFalse(support.match_test(test_chdir))
|
|
|
|
# Test rejection
|
|
with support.swap_attr(support, '_match_test_func', None):
|
|
# match all
|
|
support.set_match_tests(ignore_patterns=[])
|
|
self.assertTrue(support.match_test(test_access))
|
|
self.assertTrue(support.match_test(test_chdir))
|
|
|
|
# match all using None
|
|
support.set_match_tests(None, None)
|
|
self.assertTrue(support.match_test(test_access))
|
|
self.assertTrue(support.match_test(test_chdir))
|
|
|
|
# match the full test identifier
|
|
support.set_match_tests(None, [test_access.id()])
|
|
self.assertFalse(support.match_test(test_access))
|
|
self.assertTrue(support.match_test(test_chdir))
|
|
|
|
# match the module name
|
|
support.set_match_tests(None, ['test_os'])
|
|
self.assertFalse(support.match_test(test_access))
|
|
self.assertFalse(support.match_test(test_chdir))
|
|
|
|
# Test '*' pattern
|
|
support.set_match_tests(None, ['test_*'])
|
|
self.assertFalse(support.match_test(test_access))
|
|
self.assertFalse(support.match_test(test_chdir))
|
|
|
|
# Test case sensitivity
|
|
support.set_match_tests(None, ['filetests'])
|
|
self.assertTrue(support.match_test(test_access))
|
|
support.set_match_tests(None, ['FileTests'])
|
|
self.assertFalse(support.match_test(test_access))
|
|
|
|
# Test pattern containing '.' and a '*' metacharacter
|
|
support.set_match_tests(None, ['*test_os.*.test_*'])
|
|
self.assertFalse(support.match_test(test_access))
|
|
self.assertFalse(support.match_test(test_chdir))
|
|
|
|
# Multiple patterns
|
|
support.set_match_tests(None, [test_access.id(), test_chdir.id()])
|
|
self.assertFalse(support.match_test(test_access))
|
|
self.assertFalse(support.match_test(test_chdir))
|
|
|
|
support.set_match_tests(None, ['test_access', 'DONTMATCH'])
|
|
self.assertFalse(support.match_test(test_access))
|
|
self.assertTrue(support.match_test(test_chdir))
|
|
|
|
def test_fd_count(self):
|
|
# We cannot test the absolute value of fd_count(): on old Linux
|
|
# kernel or glibc versions, os.urandom() keeps a FD open on
|
|
# /dev/urandom device and Python has 4 FD opens instead of 3.
|
|
start = os_helper.fd_count()
|
|
fd = os.open(__file__, os.O_RDONLY)
|
|
try:
|
|
more = os_helper.fd_count()
|
|
finally:
|
|
os.close(fd)
|
|
self.assertEqual(more - start, 1)
|
|
|
|
def check_print_warning(self, msg, expected):
|
|
stderr = io.StringIO()
|
|
|
|
old_stderr = sys.__stderr__
|
|
try:
|
|
sys.__stderr__ = stderr
|
|
support.print_warning(msg)
|
|
finally:
|
|
sys.__stderr__ = old_stderr
|
|
|
|
self.assertEqual(stderr.getvalue(), expected)
|
|
|
|
def test_print_warning(self):
|
|
self.check_print_warning("msg",
|
|
"Warning -- msg\n")
|
|
self.check_print_warning("a\nb",
|
|
'Warning -- a\nWarning -- b\n')
|
|
|
|
# XXX -follows a list of untested API
|
|
# make_legacy_pyc
|
|
# is_resource_enabled
|
|
# requires
|
|
# fcmp
|
|
# umaks
|
|
# findfile
|
|
# check_warnings
|
|
# EnvironmentVarGuard
|
|
# transient_internet
|
|
# run_with_locale
|
|
# set_memlimit
|
|
# bigmemtest
|
|
# precisionbigmemtest
|
|
# bigaddrspacetest
|
|
# requires_resource
|
|
# run_doctest
|
|
# threading_cleanup
|
|
# reap_threads
|
|
# can_symlink
|
|
# skip_unless_symlink
|
|
# SuppressCrashReport
|
|
|
|
|
|
def test_main():
|
|
tests = [TestSupport]
|
|
support.run_unittest(*tests)
|
|
|
|
if __name__ == '__main__':
|
|
test_main()
|