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127 lines
5 KiB
Python
127 lines
5 KiB
Python
import importlib.util
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import os
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import py_compile
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import shutil
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import stat
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import sys
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import tempfile
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import unittest
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from test import support
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class PyCompileTests(unittest.TestCase):
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def setUp(self):
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self.directory = tempfile.mkdtemp()
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self.source_path = os.path.join(self.directory, '_test.py')
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self.pyc_path = self.source_path + 'c'
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self.cache_path = importlib.util.cache_from_source(self.source_path)
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self.cwd_drive = os.path.splitdrive(os.getcwd())[0]
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# In these tests we compute relative paths. When using Windows, the
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# current working directory path and the 'self.source_path' might be
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# on different drives. Therefore we need to switch to the drive where
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# the temporary source file lives.
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drive = os.path.splitdrive(self.source_path)[0]
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if drive:
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os.chdir(drive)
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with open(self.source_path, 'w') as file:
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file.write('x = 123\n')
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def tearDown(self):
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shutil.rmtree(self.directory)
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if self.cwd_drive:
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os.chdir(self.cwd_drive)
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def test_absolute_path(self):
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py_compile.compile(self.source_path, self.pyc_path)
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self.assertTrue(os.path.exists(self.pyc_path))
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self.assertFalse(os.path.exists(self.cache_path))
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def test_do_not_overwrite_symlinks(self):
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# In the face of a cfile argument being a symlink, bail out.
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# Issue #17222
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try:
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os.symlink(self.pyc_path + '.actual', self.pyc_path)
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except (NotImplementedError, OSError):
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self.skipTest('need to be able to create a symlink for a file')
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else:
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assert os.path.islink(self.pyc_path)
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with self.assertRaises(FileExistsError):
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py_compile.compile(self.source_path, self.pyc_path)
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@unittest.skipIf(not os.path.exists(os.devnull) or os.path.isfile(os.devnull),
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'requires os.devnull and for it to be a non-regular file')
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def test_do_not_overwrite_nonregular_files(self):
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# In the face of a cfile argument being a non-regular file, bail out.
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# Issue #17222
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with self.assertRaises(FileExistsError):
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py_compile.compile(self.source_path, os.devnull)
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def test_cache_path(self):
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py_compile.compile(self.source_path)
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self.assertTrue(os.path.exists(self.cache_path))
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def test_cwd(self):
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with support.change_cwd(self.directory):
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py_compile.compile(os.path.basename(self.source_path),
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os.path.basename(self.pyc_path))
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self.assertTrue(os.path.exists(self.pyc_path))
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self.assertFalse(os.path.exists(self.cache_path))
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def test_relative_path(self):
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py_compile.compile(os.path.relpath(self.source_path),
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os.path.relpath(self.pyc_path))
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self.assertTrue(os.path.exists(self.pyc_path))
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self.assertFalse(os.path.exists(self.cache_path))
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@unittest.skipIf(hasattr(os, 'geteuid') and os.geteuid() == 0,
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'non-root user required')
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@unittest.skipIf(os.name == 'nt',
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'cannot control directory permissions on Windows')
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def test_exceptions_propagate(self):
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# Make sure that exceptions raised thanks to issues with writing
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# bytecode.
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# http://bugs.python.org/issue17244
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mode = os.stat(self.directory)
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os.chmod(self.directory, stat.S_IREAD)
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try:
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with self.assertRaises(IOError):
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py_compile.compile(self.source_path, self.pyc_path)
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finally:
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os.chmod(self.directory, mode.st_mode)
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def test_bad_coding(self):
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bad_coding = os.path.join(os.path.dirname(__file__), 'bad_coding2.py')
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with support.captured_stderr():
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self.assertIsNone(py_compile.compile(bad_coding, doraise=False))
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self.assertFalse(os.path.exists(
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importlib.util.cache_from_source(bad_coding)))
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@unittest.skipIf(sys.flags.optimize > 0, 'test does not work with -O')
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def test_double_dot_no_clobber(self):
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# http://bugs.python.org/issue22966
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# py_compile foo.bar.py -> __pycache__/foo.cpython-34.pyc
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weird_path = os.path.join(self.directory, 'foo.bar.py')
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cache_path = importlib.util.cache_from_source(weird_path)
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pyc_path = weird_path + 'c'
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head, tail = os.path.split(cache_path)
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penultimate_tail = os.path.basename(head)
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self.assertEqual(
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os.path.join(penultimate_tail, tail),
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os.path.join(
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'__pycache__',
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'foo.bar.{}.pyc'.format(sys.implementation.cache_tag)))
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with open(weird_path, 'w') as file:
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file.write('x = 123\n')
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py_compile.compile(weird_path)
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self.assertTrue(os.path.exists(cache_path))
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self.assertFalse(os.path.exists(pyc_path))
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def test_optimization_path(self):
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# Specifying optimized bytecode should lead to a path reflecting that.
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self.assertIn('opt-2', py_compile.compile(self.source_path, optimize=2))
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if __name__ == "__main__":
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unittest.main()
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