466 lines
16 KiB
Python
466 lines
16 KiB
Python
import importlib
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import shutil
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import stat
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import sys
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import os
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import unittest
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import socket
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import tempfile
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import textwrap
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import errno
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from test import support
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from test.support import script_helper
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TESTFN = support.TESTFN
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class ClassicClass:
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pass
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class NewStyleClass(object):
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pass
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class TestSupport(unittest.TestCase):
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def test_import_module(self):
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support.import_module("ftplib")
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self.assertRaises(unittest.SkipTest, support.import_module, "foo")
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def test_import_fresh_module(self):
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support.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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with self.assertRaisesRegexp(unittest.SkipTest, 'unittest'):
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support.get_attribute(unittest, 'foo')
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with self.assertRaisesRegexp(unittest.SkipTest, 'ClassicClass'):
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support.get_attribute(ClassicClass, 'foo')
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with self.assertRaisesRegexp(unittest.SkipTest, 'ClassicClass'):
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support.get_attribute(ClassicClass(), 'foo')
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with self.assertRaisesRegexp(unittest.SkipTest, 'NewStyleClass'):
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support.get_attribute(NewStyleClass, 'foo')
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with self.assertRaisesRegexp(unittest.SkipTest, 'NewStyleClass'):
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support.get_attribute(NewStyleClass(), '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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support.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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support.unlink(TESTFN)
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self.assertFalse(os.path.exists(TESTFN))
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support.unlink(TESTFN)
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def test_rmtree(self):
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dirpath = support.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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support.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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support.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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support.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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support.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, 'wt') as f:
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f.write('foo = 1\n')
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sys.path.insert(0, os.curdir)
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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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support.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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support.unlink(mod_filename)
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support.rmtree('__pycache__')
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def test_HOST(self):
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s = socket.socket()
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s.bind((support.HOST, 0))
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s.close()
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def test_find_unused_port(self):
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port = support.find_unused_port()
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s = socket.socket()
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s.bind((support.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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support.bind_port(s)
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s.listen(5)
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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 support.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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support.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 support.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 support.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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with self.assertRaises(OSError) as cm:
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call_temp_dir(path)
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self.assertEqual(cm.exception.errno, errno.EEXIST)
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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 support.check_warnings() as recorder:
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with support.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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expected = ['tests may fail, unable to create temp dir: ' + path]
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self.assertEqual(warnings, expected)
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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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with support.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 (child has pid == 0)
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# wait for the child to terminate
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(pid, status) = os.waitpid(pid, 0)
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if status != 0:
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raise AssertionError("Child process failed with exit "
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"status indication "
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"0x{:x}.".format(status))
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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 support.temp_dir() as temp_path:
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with support.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 support.change_cwd(path) as new_cwd:
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raise Exception("should not get here")
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with support.temp_dir() as parent_dir:
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non_existent_dir = os.path.join(parent_dir, 'does_not_exist')
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with self.assertRaises(OSError) as cm:
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call_change_cwd(non_existent_dir)
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self.assertEqual(cm.exception.errno, errno.ENOENT)
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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 support.temp_dir() as parent_dir:
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bad_dir = os.path.join(parent_dir, 'does_not_exist')
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with support.check_warnings() as recorder:
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with support.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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expected = ['tests may fail, unable to change CWD to: ' + bad_dir]
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self.assertEqual(warnings, expected)
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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 support.check_warnings() as recorder:
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with support.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(messages, ['tests may fail, unable to change CWD to: ' + path])
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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 support.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 support.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 = support.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=9)
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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 support.CleanImport("asyncore"):
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importlib.import_module("asyncore")
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def test_DirsOnSysPath(self):
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with support.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 >>sys.stderr, "hello"
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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 = raw_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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def test_match_test(self):
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class Test:
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def __init__(self, test_id):
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self.test_id = test_id
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def id(self):
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return self.test_id
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test_access = Test('test.test_os.FileTests.test_access')
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test_chdir = Test('test.test_os.Win32ErrorTests.test_chdir')
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with support.swap_attr(support, '_match_test_func', None):
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# match all
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support.set_match_tests([])
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self.assertTrue(support.match_test(test_access))
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self.assertTrue(support.match_test(test_chdir))
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# match all using None
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support.set_match_tests(None)
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self.assertTrue(support.match_test(test_access))
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self.assertTrue(support.match_test(test_chdir))
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# match the full test identifier
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support.set_match_tests([test_access.id()])
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self.assertTrue(support.match_test(test_access))
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self.assertFalse(support.match_test(test_chdir))
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# match the module name
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support.set_match_tests(['test_os'])
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self.assertTrue(support.match_test(test_access))
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self.assertTrue(support.match_test(test_chdir))
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# Test '*' pattern
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support.set_match_tests(['test_*'])
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self.assertTrue(support.match_test(test_access))
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self.assertTrue(support.match_test(test_chdir))
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# Test case sensitivity
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support.set_match_tests(['filetests'])
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self.assertFalse(support.match_test(test_access))
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support.set_match_tests(['FileTests'])
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self.assertTrue(support.match_test(test_access))
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# Test pattern containing '.' and a '*' metacharacter
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support.set_match_tests(['*test_os.*.test_*'])
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self.assertTrue(support.match_test(test_access))
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self.assertTrue(support.match_test(test_chdir))
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# Multiple patterns
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support.set_match_tests([test_access.id(), test_chdir.id()])
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self.assertTrue(support.match_test(test_access))
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self.assertTrue(support.match_test(test_chdir))
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support.set_match_tests(['test_access', 'DONTMATCH'])
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self.assertTrue(support.match_test(test_access))
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self.assertFalse(support.match_test(test_chdir))
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def test_fd_count(self):
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# We cannot test the absolute value of fd_count(): on old Linux
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# kernel or glibc versions, os.urandom() keeps a FD open on
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# /dev/urandom device and Python has 4 FD opens instead of 3.
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start = support.fd_count()
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fd = os.open(__file__, os.O_RDONLY)
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try:
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more = support.fd_count()
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finally:
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os.close(fd)
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self.assertEqual(more - start, 1)
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# XXX -follows a list of untested API
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# make_legacy_pyc
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# is_resource_enabled
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# requires
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# fcmp
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# umaks
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# findfile
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# check_warnings
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# EnvironmentVarGuard
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# TransientResource
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# transient_internet
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# run_with_locale
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# set_memlimit
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# bigmemtest
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# precisionbigmemtest
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# bigaddrspacetest
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# requires_resource
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# run_doctest
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# threading_cleanup
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# reap_threads
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# reap_children
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# strip_python_stderr
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# args_from_interpreter_flags
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# can_symlink
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# skip_unless_symlink
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# SuppressCrashReport
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def test_main():
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tests = [TestSupport]
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support.run_unittest(*tests)
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if __name__ == '__main__':
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test_main()
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