608 lines
24 KiB
Python
608 lines
24 KiB
Python
from .. import abc
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from .. import util
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importlib = util.import_importlib('importlib')
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importlib_abc = util.import_importlib('importlib.abc')
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machinery = util.import_importlib('importlib.machinery')
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importlib_util = util.import_importlib('importlib.util')
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import errno
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import marshal
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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 types
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import unittest
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import warnings
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from test.support import make_legacy_pyc, unload
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class SimpleTest(abc.LoaderTests):
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"""Should have no issue importing a source module [basic]. And if there is
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a syntax error, it should raise a SyntaxError [syntax error].
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"""
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def setUp(self):
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self.name = 'spam'
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self.filepath = os.path.join('ham', self.name + '.py')
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self.loader = self.machinery.SourceFileLoader(self.name, self.filepath)
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def test_load_module_API(self):
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class Tester(self.abc.FileLoader):
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def get_source(self, _): return 'attr = 42'
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def is_package(self, _): return False
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loader = Tester('blah', 'blah.py')
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self.addCleanup(unload, 'blah')
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with warnings.catch_warnings():
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warnings.simplefilter('ignore', DeprecationWarning)
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module = loader.load_module() # Should not raise an exception.
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def test_get_filename_API(self):
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# If fullname is not set then assume self.path is desired.
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class Tester(self.abc.FileLoader):
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def get_code(self, _): pass
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def get_source(self, _): pass
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def is_package(self, _): pass
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def module_repr(self, _): pass
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path = 'some_path'
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name = 'some_name'
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loader = Tester(name, path)
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self.assertEqual(path, loader.get_filename(name))
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self.assertEqual(path, loader.get_filename())
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self.assertEqual(path, loader.get_filename(None))
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with self.assertRaises(ImportError):
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loader.get_filename(name + 'XXX')
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def test_equality(self):
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other = self.machinery.SourceFileLoader(self.name, self.filepath)
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self.assertEqual(self.loader, other)
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def test_inequality(self):
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other = self.machinery.SourceFileLoader('_' + self.name, self.filepath)
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self.assertNotEqual(self.loader, other)
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# [basic]
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def test_module(self):
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with util.create_modules('_temp') as mapping:
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loader = self.machinery.SourceFileLoader('_temp', mapping['_temp'])
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with warnings.catch_warnings():
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warnings.simplefilter('ignore', DeprecationWarning)
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module = loader.load_module('_temp')
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self.assertIn('_temp', sys.modules)
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check = {'__name__': '_temp', '__file__': mapping['_temp'],
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'__package__': ''}
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for attr, value in check.items():
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self.assertEqual(getattr(module, attr), value)
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def test_package(self):
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with util.create_modules('_pkg.__init__') as mapping:
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loader = self.machinery.SourceFileLoader('_pkg',
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mapping['_pkg.__init__'])
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with warnings.catch_warnings():
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warnings.simplefilter('ignore', DeprecationWarning)
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module = loader.load_module('_pkg')
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self.assertIn('_pkg', sys.modules)
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check = {'__name__': '_pkg', '__file__': mapping['_pkg.__init__'],
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'__path__': [os.path.dirname(mapping['_pkg.__init__'])],
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'__package__': '_pkg'}
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for attr, value in check.items():
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self.assertEqual(getattr(module, attr), value)
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def test_lacking_parent(self):
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with util.create_modules('_pkg.__init__', '_pkg.mod')as mapping:
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loader = self.machinery.SourceFileLoader('_pkg.mod',
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mapping['_pkg.mod'])
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with warnings.catch_warnings():
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warnings.simplefilter('ignore', DeprecationWarning)
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module = loader.load_module('_pkg.mod')
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self.assertIn('_pkg.mod', sys.modules)
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check = {'__name__': '_pkg.mod', '__file__': mapping['_pkg.mod'],
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'__package__': '_pkg'}
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for attr, value in check.items():
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self.assertEqual(getattr(module, attr), value)
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def fake_mtime(self, fxn):
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"""Fake mtime to always be higher than expected."""
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return lambda name: fxn(name) + 1
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def test_module_reuse(self):
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with util.create_modules('_temp') as mapping:
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loader = self.machinery.SourceFileLoader('_temp', mapping['_temp'])
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with warnings.catch_warnings():
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warnings.simplefilter('ignore', DeprecationWarning)
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module = loader.load_module('_temp')
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module_id = id(module)
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module_dict_id = id(module.__dict__)
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with open(mapping['_temp'], 'w') as file:
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file.write("testing_var = 42\n")
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with warnings.catch_warnings():
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warnings.simplefilter('ignore', DeprecationWarning)
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module = loader.load_module('_temp')
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self.assertIn('testing_var', module.__dict__,
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"'testing_var' not in "
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"{0}".format(list(module.__dict__.keys())))
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self.assertEqual(module, sys.modules['_temp'])
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self.assertEqual(id(module), module_id)
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self.assertEqual(id(module.__dict__), module_dict_id)
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def test_state_after_failure(self):
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# A failed reload should leave the original module intact.
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attributes = ('__file__', '__path__', '__package__')
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value = '<test>'
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name = '_temp'
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with util.create_modules(name) as mapping:
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orig_module = types.ModuleType(name)
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for attr in attributes:
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setattr(orig_module, attr, value)
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with open(mapping[name], 'w') as file:
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file.write('+++ bad syntax +++')
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loader = self.machinery.SourceFileLoader('_temp', mapping['_temp'])
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with self.assertRaises(SyntaxError):
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loader.exec_module(orig_module)
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for attr in attributes:
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self.assertEqual(getattr(orig_module, attr), value)
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with self.assertRaises(SyntaxError):
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with warnings.catch_warnings():
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warnings.simplefilter('ignore', DeprecationWarning)
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loader.load_module(name)
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for attr in attributes:
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self.assertEqual(getattr(orig_module, attr), value)
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# [syntax error]
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def test_bad_syntax(self):
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with util.create_modules('_temp') as mapping:
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with open(mapping['_temp'], 'w') as file:
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file.write('=')
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loader = self.machinery.SourceFileLoader('_temp', mapping['_temp'])
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with self.assertRaises(SyntaxError):
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with warnings.catch_warnings():
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warnings.simplefilter('ignore', DeprecationWarning)
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loader.load_module('_temp')
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self.assertNotIn('_temp', sys.modules)
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def test_file_from_empty_string_dir(self):
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# Loading a module found from an empty string entry on sys.path should
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# not only work, but keep all attributes relative.
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file_path = '_temp.py'
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with open(file_path, 'w') as file:
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file.write("# test file for importlib")
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try:
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with util.uncache('_temp'):
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loader = self.machinery.SourceFileLoader('_temp', file_path)
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with warnings.catch_warnings():
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warnings.simplefilter('ignore', DeprecationWarning)
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mod = loader.load_module('_temp')
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self.assertEqual(file_path, mod.__file__)
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self.assertEqual(self.util.cache_from_source(file_path),
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mod.__cached__)
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finally:
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os.unlink(file_path)
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pycache = os.path.dirname(self.util.cache_from_source(file_path))
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if os.path.exists(pycache):
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shutil.rmtree(pycache)
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@util.writes_bytecode_files
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def test_timestamp_overflow(self):
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# When a modification timestamp is larger than 2**32, it should be
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# truncated rather than raise an OverflowError.
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with util.create_modules('_temp') as mapping:
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source = mapping['_temp']
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compiled = self.util.cache_from_source(source)
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with open(source, 'w') as f:
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f.write("x = 5")
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try:
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os.utime(source, (2 ** 33 - 5, 2 ** 33 - 5))
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except OverflowError:
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self.skipTest("cannot set modification time to large integer")
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except OSError as e:
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if e.errno != getattr(errno, 'EOVERFLOW', None):
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raise
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self.skipTest("cannot set modification time to large integer ({})".format(e))
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loader = self.machinery.SourceFileLoader('_temp', mapping['_temp'])
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# PEP 451
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module = types.ModuleType('_temp')
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module.__spec__ = self.util.spec_from_loader('_temp', loader)
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loader.exec_module(module)
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self.assertEqual(module.x, 5)
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self.assertTrue(os.path.exists(compiled))
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os.unlink(compiled)
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# PEP 302
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with warnings.catch_warnings():
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warnings.simplefilter('ignore', DeprecationWarning)
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mod = loader.load_module('_temp') # XXX
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# Sanity checks.
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self.assertEqual(mod.__cached__, compiled)
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self.assertEqual(mod.x, 5)
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# The pyc file was created.
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self.assertTrue(os.path.exists(compiled))
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def test_unloadable(self):
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loader = self.machinery.SourceFileLoader('good name', {})
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module = types.ModuleType('bad name')
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module.__spec__ = self.machinery.ModuleSpec('bad name', loader)
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with self.assertRaises(ImportError):
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loader.exec_module(module)
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with self.assertRaises(ImportError):
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with warnings.catch_warnings():
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warnings.simplefilter('ignore', DeprecationWarning)
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loader.load_module('bad name')
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(Frozen_SimpleTest,
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Source_SimpleTest
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) = util.test_both(SimpleTest, importlib=importlib, machinery=machinery,
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abc=importlib_abc, util=importlib_util)
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class BadBytecodeTest:
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def import_(self, file, module_name):
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loader = self.loader(module_name, file)
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with warnings.catch_warnings():
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warnings.simplefilter('ignore', DeprecationWarning)
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# XXX Change to use exec_module().
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module = loader.load_module(module_name)
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self.assertIn(module_name, sys.modules)
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def manipulate_bytecode(self, name, mapping, manipulator, *,
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del_source=False):
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"""Manipulate the bytecode of a module by passing it into a callable
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that returns what to use as the new bytecode."""
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try:
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del sys.modules['_temp']
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except KeyError:
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pass
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py_compile.compile(mapping[name])
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if not del_source:
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bytecode_path = self.util.cache_from_source(mapping[name])
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else:
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os.unlink(mapping[name])
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bytecode_path = make_legacy_pyc(mapping[name])
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if manipulator:
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with open(bytecode_path, 'rb') as file:
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bc = file.read()
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new_bc = manipulator(bc)
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with open(bytecode_path, 'wb') as file:
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if new_bc is not None:
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file.write(new_bc)
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return bytecode_path
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def _test_empty_file(self, test, *, del_source=False):
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with util.create_modules('_temp') as mapping:
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bc_path = self.manipulate_bytecode('_temp', mapping,
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lambda bc: b'',
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del_source=del_source)
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test('_temp', mapping, bc_path)
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@util.writes_bytecode_files
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def _test_partial_magic(self, test, *, del_source=False):
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# When their are less than 4 bytes to a .pyc, regenerate it if
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# possible, else raise ImportError.
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with util.create_modules('_temp') as mapping:
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bc_path = self.manipulate_bytecode('_temp', mapping,
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lambda bc: bc[:3],
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del_source=del_source)
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test('_temp', mapping, bc_path)
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def _test_magic_only(self, test, *, del_source=False):
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with util.create_modules('_temp') as mapping:
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bc_path = self.manipulate_bytecode('_temp', mapping,
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lambda bc: bc[:4],
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del_source=del_source)
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test('_temp', mapping, bc_path)
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def _test_partial_timestamp(self, test, *, del_source=False):
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with util.create_modules('_temp') as mapping:
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bc_path = self.manipulate_bytecode('_temp', mapping,
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lambda bc: bc[:7],
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del_source=del_source)
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test('_temp', mapping, bc_path)
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def _test_partial_size(self, test, *, del_source=False):
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with util.create_modules('_temp') as mapping:
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bc_path = self.manipulate_bytecode('_temp', mapping,
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lambda bc: bc[:11],
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del_source=del_source)
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test('_temp', mapping, bc_path)
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def _test_no_marshal(self, *, del_source=False):
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with util.create_modules('_temp') as mapping:
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bc_path = self.manipulate_bytecode('_temp', mapping,
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lambda bc: bc[:12],
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del_source=del_source)
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file_path = mapping['_temp'] if not del_source else bc_path
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with self.assertRaises(EOFError):
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self.import_(file_path, '_temp')
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def _test_non_code_marshal(self, *, del_source=False):
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with util.create_modules('_temp') as mapping:
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bytecode_path = self.manipulate_bytecode('_temp', mapping,
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lambda bc: bc[:12] + marshal.dumps(b'abcd'),
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del_source=del_source)
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file_path = mapping['_temp'] if not del_source else bytecode_path
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with self.assertRaises(ImportError) as cm:
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self.import_(file_path, '_temp')
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self.assertEqual(cm.exception.name, '_temp')
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self.assertEqual(cm.exception.path, bytecode_path)
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def _test_bad_marshal(self, *, del_source=False):
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with util.create_modules('_temp') as mapping:
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bytecode_path = self.manipulate_bytecode('_temp', mapping,
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lambda bc: bc[:12] + b'<test>',
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del_source=del_source)
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file_path = mapping['_temp'] if not del_source else bytecode_path
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with self.assertRaises(EOFError):
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self.import_(file_path, '_temp')
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def _test_bad_magic(self, test, *, del_source=False):
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with util.create_modules('_temp') as mapping:
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bc_path = self.manipulate_bytecode('_temp', mapping,
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lambda bc: b'\x00\x00\x00\x00' + bc[4:])
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test('_temp', mapping, bc_path)
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class BadBytecodeTestPEP451(BadBytecodeTest):
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def import_(self, file, module_name):
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loader = self.loader(module_name, file)
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module = types.ModuleType(module_name)
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module.__spec__ = self.util.spec_from_loader(module_name, loader)
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loader.exec_module(module)
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class BadBytecodeTestPEP302(BadBytecodeTest):
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def import_(self, file, module_name):
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loader = self.loader(module_name, file)
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with warnings.catch_warnings():
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warnings.simplefilter('ignore', DeprecationWarning)
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module = loader.load_module(module_name)
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self.assertIn(module_name, sys.modules)
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class SourceLoaderBadBytecodeTest:
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@classmethod
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def setUpClass(cls):
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cls.loader = cls.machinery.SourceFileLoader
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@util.writes_bytecode_files
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def test_empty_file(self):
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# When a .pyc is empty, regenerate it if possible, else raise
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# ImportError.
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def test(name, mapping, bytecode_path):
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self.import_(mapping[name], name)
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with open(bytecode_path, 'rb') as file:
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self.assertGreater(len(file.read()), 12)
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self._test_empty_file(test)
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def test_partial_magic(self):
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def test(name, mapping, bytecode_path):
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self.import_(mapping[name], name)
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with open(bytecode_path, 'rb') as file:
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self.assertGreater(len(file.read()), 12)
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self._test_partial_magic(test)
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@util.writes_bytecode_files
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def test_magic_only(self):
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# When there is only the magic number, regenerate the .pyc if possible,
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# else raise EOFError.
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def test(name, mapping, bytecode_path):
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self.import_(mapping[name], name)
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with open(bytecode_path, 'rb') as file:
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self.assertGreater(len(file.read()), 12)
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self._test_magic_only(test)
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@util.writes_bytecode_files
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def test_bad_magic(self):
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# When the magic number is different, the bytecode should be
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# regenerated.
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def test(name, mapping, bytecode_path):
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self.import_(mapping[name], name)
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with open(bytecode_path, 'rb') as bytecode_file:
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self.assertEqual(bytecode_file.read(4),
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self.util.MAGIC_NUMBER)
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self._test_bad_magic(test)
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@util.writes_bytecode_files
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def test_partial_timestamp(self):
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# When the timestamp is partial, regenerate the .pyc, else
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# raise EOFError.
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def test(name, mapping, bc_path):
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self.import_(mapping[name], name)
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with open(bc_path, 'rb') as file:
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self.assertGreater(len(file.read()), 12)
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self._test_partial_timestamp(test)
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@util.writes_bytecode_files
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def test_partial_size(self):
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# When the size is partial, regenerate the .pyc, else
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# raise EOFError.
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def test(name, mapping, bc_path):
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self.import_(mapping[name], name)
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with open(bc_path, 'rb') as file:
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self.assertGreater(len(file.read()), 12)
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self._test_partial_size(test)
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@util.writes_bytecode_files
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def test_no_marshal(self):
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# When there is only the magic number and timestamp, raise EOFError.
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self._test_no_marshal()
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@util.writes_bytecode_files
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def test_non_code_marshal(self):
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self._test_non_code_marshal()
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# XXX ImportError when sourceless
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# [bad marshal]
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@util.writes_bytecode_files
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def test_bad_marshal(self):
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# Bad marshal data should raise a ValueError.
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self._test_bad_marshal()
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# [bad timestamp]
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@util.writes_bytecode_files
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def test_old_timestamp(self):
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# When the timestamp is older than the source, bytecode should be
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# regenerated.
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zeros = b'\x00\x00\x00\x00'
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with util.create_modules('_temp') as mapping:
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py_compile.compile(mapping['_temp'])
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bytecode_path = self.util.cache_from_source(mapping['_temp'])
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with open(bytecode_path, 'r+b') as bytecode_file:
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bytecode_file.seek(4)
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bytecode_file.write(zeros)
|
|
self.import_(mapping['_temp'], '_temp')
|
|
source_mtime = os.path.getmtime(mapping['_temp'])
|
|
source_timestamp = self.importlib._w_long(source_mtime)
|
|
with open(bytecode_path, 'rb') as bytecode_file:
|
|
bytecode_file.seek(4)
|
|
self.assertEqual(bytecode_file.read(4), source_timestamp)
|
|
|
|
# [bytecode read-only]
|
|
@util.writes_bytecode_files
|
|
def test_read_only_bytecode(self):
|
|
# When bytecode is read-only but should be rewritten, fail silently.
|
|
with util.create_modules('_temp') as mapping:
|
|
# Create bytecode that will need to be re-created.
|
|
py_compile.compile(mapping['_temp'])
|
|
bytecode_path = self.util.cache_from_source(mapping['_temp'])
|
|
with open(bytecode_path, 'r+b') as bytecode_file:
|
|
bytecode_file.seek(0)
|
|
bytecode_file.write(b'\x00\x00\x00\x00')
|
|
# Make the bytecode read-only.
|
|
os.chmod(bytecode_path,
|
|
stat.S_IRUSR | stat.S_IRGRP | stat.S_IROTH)
|
|
try:
|
|
# Should not raise OSError!
|
|
self.import_(mapping['_temp'], '_temp')
|
|
finally:
|
|
# Make writable for eventual clean-up.
|
|
os.chmod(bytecode_path, stat.S_IWUSR)
|
|
|
|
|
|
class SourceLoaderBadBytecodeTestPEP451(
|
|
SourceLoaderBadBytecodeTest, BadBytecodeTestPEP451):
|
|
pass
|
|
|
|
|
|
(Frozen_SourceBadBytecodePEP451,
|
|
Source_SourceBadBytecodePEP451
|
|
) = util.test_both(SourceLoaderBadBytecodeTestPEP451, importlib=importlib,
|
|
machinery=machinery, abc=importlib_abc,
|
|
util=importlib_util)
|
|
|
|
|
|
class SourceLoaderBadBytecodeTestPEP302(
|
|
SourceLoaderBadBytecodeTest, BadBytecodeTestPEP302):
|
|
pass
|
|
|
|
|
|
(Frozen_SourceBadBytecodePEP302,
|
|
Source_SourceBadBytecodePEP302
|
|
) = util.test_both(SourceLoaderBadBytecodeTestPEP302, importlib=importlib,
|
|
machinery=machinery, abc=importlib_abc,
|
|
util=importlib_util)
|
|
|
|
|
|
class SourcelessLoaderBadBytecodeTest:
|
|
|
|
@classmethod
|
|
def setUpClass(cls):
|
|
cls.loader = cls.machinery.SourcelessFileLoader
|
|
|
|
def test_empty_file(self):
|
|
def test(name, mapping, bytecode_path):
|
|
with self.assertRaises(ImportError) as cm:
|
|
self.import_(bytecode_path, name)
|
|
self.assertEqual(cm.exception.name, name)
|
|
self.assertEqual(cm.exception.path, bytecode_path)
|
|
|
|
self._test_empty_file(test, del_source=True)
|
|
|
|
def test_partial_magic(self):
|
|
def test(name, mapping, bytecode_path):
|
|
with self.assertRaises(ImportError) as cm:
|
|
self.import_(bytecode_path, name)
|
|
self.assertEqual(cm.exception.name, name)
|
|
self.assertEqual(cm.exception.path, bytecode_path)
|
|
self._test_partial_magic(test, del_source=True)
|
|
|
|
def test_magic_only(self):
|
|
def test(name, mapping, bytecode_path):
|
|
with self.assertRaises(EOFError):
|
|
self.import_(bytecode_path, name)
|
|
|
|
self._test_magic_only(test, del_source=True)
|
|
|
|
def test_bad_magic(self):
|
|
def test(name, mapping, bytecode_path):
|
|
with self.assertRaises(ImportError) as cm:
|
|
self.import_(bytecode_path, name)
|
|
self.assertEqual(cm.exception.name, name)
|
|
self.assertEqual(cm.exception.path, bytecode_path)
|
|
|
|
self._test_bad_magic(test, del_source=True)
|
|
|
|
def test_partial_timestamp(self):
|
|
def test(name, mapping, bytecode_path):
|
|
with self.assertRaises(EOFError):
|
|
self.import_(bytecode_path, name)
|
|
|
|
self._test_partial_timestamp(test, del_source=True)
|
|
|
|
def test_partial_size(self):
|
|
def test(name, mapping, bytecode_path):
|
|
with self.assertRaises(EOFError):
|
|
self.import_(bytecode_path, name)
|
|
|
|
self._test_partial_size(test, del_source=True)
|
|
|
|
def test_no_marshal(self):
|
|
self._test_no_marshal(del_source=True)
|
|
|
|
def test_non_code_marshal(self):
|
|
self._test_non_code_marshal(del_source=True)
|
|
|
|
|
|
class SourcelessLoaderBadBytecodeTestPEP451(SourcelessLoaderBadBytecodeTest,
|
|
BadBytecodeTestPEP451):
|
|
pass
|
|
|
|
|
|
(Frozen_SourcelessBadBytecodePEP451,
|
|
Source_SourcelessBadBytecodePEP451
|
|
) = util.test_both(SourcelessLoaderBadBytecodeTestPEP451, importlib=importlib,
|
|
machinery=machinery, abc=importlib_abc,
|
|
util=importlib_util)
|
|
|
|
|
|
class SourcelessLoaderBadBytecodeTestPEP302(SourcelessLoaderBadBytecodeTest,
|
|
BadBytecodeTestPEP302):
|
|
pass
|
|
|
|
|
|
(Frozen_SourcelessBadBytecodePEP302,
|
|
Source_SourcelessBadBytecodePEP302
|
|
) = util.test_both(SourcelessLoaderBadBytecodeTestPEP302, importlib=importlib,
|
|
machinery=machinery, abc=importlib_abc,
|
|
util=importlib_util)
|
|
|
|
|
|
if __name__ == '__main__':
|
|
unittest.main()
|