1016 lines
34 KiB
Python
1016 lines
34 KiB
Python
import io
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import marshal
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import os
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import sys
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from test import support
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from test.support import import_helper
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import types
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import unittest
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from unittest import mock
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import warnings
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from . import util as test_util
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init = test_util.import_importlib('importlib')
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abc = test_util.import_importlib('importlib.abc')
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machinery = test_util.import_importlib('importlib.machinery')
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util = test_util.import_importlib('importlib.util')
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##### Inheritance ##############################################################
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class InheritanceTests:
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"""Test that the specified class is a subclass/superclass of the expected
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classes."""
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subclasses = []
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superclasses = []
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def setUp(self):
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self.superclasses = [getattr(self.abc, class_name)
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for class_name in self.superclass_names]
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if hasattr(self, 'subclass_names'):
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# Because test.support.import_fresh_module() creates a new
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# importlib._bootstrap per module, inheritance checks fail when
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# checking across module boundaries (i.e. the _bootstrap in abc is
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# not the same as the one in machinery). That means stealing one of
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# the modules from the other to make sure the same instance is used.
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machinery = self.abc.machinery
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self.subclasses = [getattr(machinery, class_name)
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for class_name in self.subclass_names]
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assert self.subclasses or self.superclasses, self.__class__
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self.__test = getattr(self.abc, self._NAME)
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def test_subclasses(self):
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# Test that the expected subclasses inherit.
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for subclass in self.subclasses:
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self.assertTrue(issubclass(subclass, self.__test),
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"{0} is not a subclass of {1}".format(subclass, self.__test))
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def test_superclasses(self):
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# Test that the class inherits from the expected superclasses.
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for superclass in self.superclasses:
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self.assertTrue(issubclass(self.__test, superclass),
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"{0} is not a superclass of {1}".format(superclass, self.__test))
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class MetaPathFinder(InheritanceTests):
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superclass_names = ['Finder']
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subclass_names = ['BuiltinImporter', 'FrozenImporter', 'PathFinder',
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'WindowsRegistryFinder']
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(Frozen_MetaPathFinderInheritanceTests,
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Source_MetaPathFinderInheritanceTests
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) = test_util.test_both(MetaPathFinder, abc=abc)
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class PathEntryFinder(InheritanceTests):
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superclass_names = ['Finder']
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subclass_names = ['FileFinder']
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(Frozen_PathEntryFinderInheritanceTests,
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Source_PathEntryFinderInheritanceTests
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) = test_util.test_both(PathEntryFinder, abc=abc)
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class ResourceLoader(InheritanceTests):
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superclass_names = ['Loader']
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(Frozen_ResourceLoaderInheritanceTests,
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Source_ResourceLoaderInheritanceTests
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) = test_util.test_both(ResourceLoader, abc=abc)
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class InspectLoader(InheritanceTests):
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superclass_names = ['Loader']
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subclass_names = ['BuiltinImporter', 'FrozenImporter', 'ExtensionFileLoader']
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(Frozen_InspectLoaderInheritanceTests,
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Source_InspectLoaderInheritanceTests
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) = test_util.test_both(InspectLoader, abc=abc)
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class ExecutionLoader(InheritanceTests):
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superclass_names = ['InspectLoader']
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subclass_names = ['ExtensionFileLoader']
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(Frozen_ExecutionLoaderInheritanceTests,
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Source_ExecutionLoaderInheritanceTests
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) = test_util.test_both(ExecutionLoader, abc=abc)
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class FileLoader(InheritanceTests):
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superclass_names = ['ResourceLoader', 'ExecutionLoader']
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subclass_names = ['SourceFileLoader', 'SourcelessFileLoader']
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(Frozen_FileLoaderInheritanceTests,
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Source_FileLoaderInheritanceTests
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) = test_util.test_both(FileLoader, abc=abc)
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class SourceLoader(InheritanceTests):
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superclass_names = ['ResourceLoader', 'ExecutionLoader']
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subclass_names = ['SourceFileLoader']
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(Frozen_SourceLoaderInheritanceTests,
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Source_SourceLoaderInheritanceTests
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) = test_util.test_both(SourceLoader, abc=abc)
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##### Default return values ####################################################
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def make_abc_subclasses(base_class, name=None, inst=False, **kwargs):
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if name is None:
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name = base_class.__name__
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base = {kind: getattr(splitabc, name)
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for kind, splitabc in abc.items()}
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return {cls._KIND: cls() if inst else cls
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for cls in test_util.split_frozen(base_class, base, **kwargs)}
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class ABCTestHarness:
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@property
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def ins(self):
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# Lazily set ins on the class.
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cls = self.SPLIT[self._KIND]
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ins = cls()
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self.__class__.ins = ins
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return ins
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class MetaPathFinder:
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def find_module(self, fullname, path):
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return super().find_module(fullname, path)
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class MetaPathFinderDefaultsTests(ABCTestHarness):
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SPLIT = make_abc_subclasses(MetaPathFinder)
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def test_find_module(self):
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# Default should return None.
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with self.assertWarns(DeprecationWarning):
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found = self.ins.find_module('something', None)
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self.assertIsNone(found)
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def test_invalidate_caches(self):
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# Calling the method is a no-op.
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self.ins.invalidate_caches()
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(Frozen_MPFDefaultTests,
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Source_MPFDefaultTests
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) = test_util.test_both(MetaPathFinderDefaultsTests)
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class PathEntryFinder:
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def find_loader(self, fullname):
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return super().find_loader(fullname)
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class PathEntryFinderDefaultsTests(ABCTestHarness):
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SPLIT = make_abc_subclasses(PathEntryFinder)
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def test_find_loader(self):
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with self.assertWarns(DeprecationWarning):
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found = self.ins.find_loader('something')
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self.assertEqual(found, (None, []))
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def find_module(self):
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self.assertEqual(None, self.ins.find_module('something'))
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def test_invalidate_caches(self):
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# Should be a no-op.
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self.ins.invalidate_caches()
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(Frozen_PEFDefaultTests,
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Source_PEFDefaultTests
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) = test_util.test_both(PathEntryFinderDefaultsTests)
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class Loader:
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def load_module(self, fullname):
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return super().load_module(fullname)
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class LoaderDefaultsTests(ABCTestHarness):
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SPLIT = make_abc_subclasses(Loader)
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def test_create_module(self):
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spec = 'a spec'
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self.assertIsNone(self.ins.create_module(spec))
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def test_load_module(self):
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with self.assertRaises(ImportError):
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self.ins.load_module('something')
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def test_module_repr(self):
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mod = types.ModuleType('blah')
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with self.assertRaises(NotImplementedError):
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self.ins.module_repr(mod)
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original_repr = repr(mod)
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mod.__loader__ = self.ins
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# Should still return a proper repr.
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self.assertTrue(repr(mod))
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(Frozen_LDefaultTests,
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SourceLDefaultTests
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) = test_util.test_both(LoaderDefaultsTests)
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class ResourceLoader(Loader):
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def get_data(self, path):
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return super().get_data(path)
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class ResourceLoaderDefaultsTests(ABCTestHarness):
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SPLIT = make_abc_subclasses(ResourceLoader)
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def test_get_data(self):
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with self.assertRaises(IOError):
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self.ins.get_data('/some/path')
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(Frozen_RLDefaultTests,
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Source_RLDefaultTests
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) = test_util.test_both(ResourceLoaderDefaultsTests)
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class InspectLoader(Loader):
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def is_package(self, fullname):
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return super().is_package(fullname)
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def get_source(self, fullname):
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return super().get_source(fullname)
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SPLIT_IL = make_abc_subclasses(InspectLoader)
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class InspectLoaderDefaultsTests(ABCTestHarness):
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SPLIT = SPLIT_IL
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def test_is_package(self):
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with self.assertRaises(ImportError):
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self.ins.is_package('blah')
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def test_get_source(self):
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with self.assertRaises(ImportError):
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self.ins.get_source('blah')
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(Frozen_ILDefaultTests,
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Source_ILDefaultTests
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) = test_util.test_both(InspectLoaderDefaultsTests)
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class ExecutionLoader(InspectLoader):
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def get_filename(self, fullname):
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return super().get_filename(fullname)
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SPLIT_EL = make_abc_subclasses(ExecutionLoader)
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class ExecutionLoaderDefaultsTests(ABCTestHarness):
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SPLIT = SPLIT_EL
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def test_get_filename(self):
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with self.assertRaises(ImportError):
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self.ins.get_filename('blah')
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(Frozen_ELDefaultTests,
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Source_ELDefaultsTests
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) = test_util.test_both(InspectLoaderDefaultsTests)
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class ResourceReader:
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def open_resource(self, *args, **kwargs):
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return super().open_resource(*args, **kwargs)
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def resource_path(self, *args, **kwargs):
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return super().resource_path(*args, **kwargs)
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def is_resource(self, *args, **kwargs):
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return super().is_resource(*args, **kwargs)
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def contents(self, *args, **kwargs):
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return super().contents(*args, **kwargs)
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class ResourceReaderDefaultsTests(ABCTestHarness):
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SPLIT = make_abc_subclasses(ResourceReader)
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def test_open_resource(self):
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with self.assertRaises(FileNotFoundError):
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self.ins.open_resource('dummy_file')
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def test_resource_path(self):
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with self.assertRaises(FileNotFoundError):
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self.ins.resource_path('dummy_file')
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def test_is_resource(self):
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with self.assertRaises(FileNotFoundError):
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self.ins.is_resource('dummy_file')
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def test_contents(self):
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self.assertEqual([], list(self.ins.contents()))
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(Frozen_RRDefaultTests,
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Source_RRDefaultsTests
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) = test_util.test_both(ResourceReaderDefaultsTests)
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##### MetaPathFinder concrete methods ##########################################
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class MetaPathFinderFindModuleTests:
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@classmethod
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def finder(cls, spec):
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class MetaPathSpecFinder(cls.abc.MetaPathFinder):
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def find_spec(self, fullname, path, target=None):
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self.called_for = fullname, path
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return spec
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return MetaPathSpecFinder()
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def test_find_module(self):
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finder = self.finder(None)
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path = ['a', 'b', 'c']
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name = 'blah'
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with self.assertWarns(DeprecationWarning):
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found = finder.find_module(name, path)
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self.assertIsNone(found)
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def test_find_spec_with_explicit_target(self):
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loader = object()
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spec = self.util.spec_from_loader('blah', loader)
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finder = self.finder(spec)
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found = finder.find_spec('blah', 'blah', None)
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self.assertEqual(found, spec)
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def test_no_spec(self):
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finder = self.finder(None)
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path = ['a', 'b', 'c']
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name = 'blah'
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found = finder.find_spec(name, path, None)
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self.assertIsNone(found)
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self.assertEqual(name, finder.called_for[0])
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self.assertEqual(path, finder.called_for[1])
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def test_spec(self):
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loader = object()
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spec = self.util.spec_from_loader('blah', loader)
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finder = self.finder(spec)
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found = finder.find_spec('blah', None)
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self.assertIs(found, spec)
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(Frozen_MPFFindModuleTests,
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Source_MPFFindModuleTests
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) = test_util.test_both(MetaPathFinderFindModuleTests, abc=abc, util=util)
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##### PathEntryFinder concrete methods #########################################
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class PathEntryFinderFindLoaderTests:
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@classmethod
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def finder(cls, spec):
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class PathEntrySpecFinder(cls.abc.PathEntryFinder):
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def find_spec(self, fullname, target=None):
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self.called_for = fullname
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return spec
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return PathEntrySpecFinder()
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def test_no_spec(self):
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finder = self.finder(None)
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name = 'blah'
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with self.assertWarns(DeprecationWarning):
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found = finder.find_loader(name)
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self.assertIsNone(found[0])
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self.assertEqual([], found[1])
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self.assertEqual(name, finder.called_for)
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def test_spec_with_loader(self):
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loader = object()
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spec = self.util.spec_from_loader('blah', loader)
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finder = self.finder(spec)
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with self.assertWarns(DeprecationWarning):
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found = finder.find_loader('blah')
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self.assertIs(found[0], spec.loader)
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def test_spec_with_portions(self):
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spec = self.machinery.ModuleSpec('blah', None)
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paths = ['a', 'b', 'c']
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spec.submodule_search_locations = paths
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finder = self.finder(spec)
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with self.assertWarns(DeprecationWarning):
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found = finder.find_loader('blah')
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self.assertIsNone(found[0])
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self.assertEqual(paths, found[1])
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(Frozen_PEFFindLoaderTests,
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Source_PEFFindLoaderTests
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) = test_util.test_both(PathEntryFinderFindLoaderTests, abc=abc, util=util,
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machinery=machinery)
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##### Loader concrete methods ##################################################
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class LoaderLoadModuleTests:
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def loader(self):
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class SpecLoader(self.abc.Loader):
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found = None
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def exec_module(self, module):
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self.found = module
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def is_package(self, fullname):
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"""Force some non-default module state to be set."""
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return True
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return SpecLoader()
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def test_fresh(self):
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loader = self.loader()
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name = 'blah'
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with test_util.uncache(name):
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loader.load_module(name)
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module = loader.found
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self.assertIs(sys.modules[name], module)
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self.assertEqual(loader, module.__loader__)
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self.assertEqual(loader, module.__spec__.loader)
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self.assertEqual(name, module.__name__)
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self.assertEqual(name, module.__spec__.name)
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self.assertIsNotNone(module.__path__)
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self.assertIsNotNone(module.__path__,
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module.__spec__.submodule_search_locations)
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def test_reload(self):
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name = 'blah'
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loader = self.loader()
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module = types.ModuleType(name)
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module.__spec__ = self.util.spec_from_loader(name, loader)
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module.__loader__ = loader
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with test_util.uncache(name):
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sys.modules[name] = module
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loader.load_module(name)
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found = loader.found
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self.assertIs(found, sys.modules[name])
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self.assertIs(module, sys.modules[name])
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(Frozen_LoaderLoadModuleTests,
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Source_LoaderLoadModuleTests
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) = test_util.test_both(LoaderLoadModuleTests, abc=abc, util=util)
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##### InspectLoader concrete methods ###########################################
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class InspectLoaderSourceToCodeTests:
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def source_to_module(self, data, path=None):
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"""Help with source_to_code() tests."""
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module = types.ModuleType('blah')
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loader = self.InspectLoaderSubclass()
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if path is None:
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code = loader.source_to_code(data)
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else:
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code = loader.source_to_code(data, path)
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exec(code, module.__dict__)
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return module
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def test_source_to_code_source(self):
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# Since compile() can handle strings, so should source_to_code().
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source = 'attr = 42'
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module = self.source_to_module(source)
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self.assertTrue(hasattr(module, 'attr'))
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self.assertEqual(module.attr, 42)
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def test_source_to_code_bytes(self):
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# Since compile() can handle bytes, so should source_to_code().
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source = b'attr = 42'
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module = self.source_to_module(source)
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self.assertTrue(hasattr(module, 'attr'))
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self.assertEqual(module.attr, 42)
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def test_source_to_code_path(self):
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# Specifying a path should set it for the code object.
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path = 'path/to/somewhere'
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loader = self.InspectLoaderSubclass()
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code = loader.source_to_code('', path)
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self.assertEqual(code.co_filename, path)
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def test_source_to_code_no_path(self):
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# Not setting a path should still work and be set to <string> since that
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# is a pre-existing practice as a default to compile().
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loader = self.InspectLoaderSubclass()
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code = loader.source_to_code('')
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self.assertEqual(code.co_filename, '<string>')
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(Frozen_ILSourceToCodeTests,
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Source_ILSourceToCodeTests
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) = test_util.test_both(InspectLoaderSourceToCodeTests,
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InspectLoaderSubclass=SPLIT_IL)
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class InspectLoaderGetCodeTests:
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def test_get_code(self):
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# Test success.
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module = types.ModuleType('blah')
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with mock.patch.object(self.InspectLoaderSubclass, 'get_source') as mocked:
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mocked.return_value = 'attr = 42'
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loader = self.InspectLoaderSubclass()
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|
code = loader.get_code('blah')
|
|
exec(code, module.__dict__)
|
|
self.assertEqual(module.attr, 42)
|
|
|
|
def test_get_code_source_is_None(self):
|
|
# If get_source() is None then this should be None.
|
|
with mock.patch.object(self.InspectLoaderSubclass, 'get_source') as mocked:
|
|
mocked.return_value = None
|
|
loader = self.InspectLoaderSubclass()
|
|
code = loader.get_code('blah')
|
|
self.assertIsNone(code)
|
|
|
|
def test_get_code_source_not_found(self):
|
|
# If there is no source then there is no code object.
|
|
loader = self.InspectLoaderSubclass()
|
|
with self.assertRaises(ImportError):
|
|
loader.get_code('blah')
|
|
|
|
|
|
(Frozen_ILGetCodeTests,
|
|
Source_ILGetCodeTests
|
|
) = test_util.test_both(InspectLoaderGetCodeTests,
|
|
InspectLoaderSubclass=SPLIT_IL)
|
|
|
|
|
|
class InspectLoaderLoadModuleTests:
|
|
|
|
"""Test InspectLoader.load_module()."""
|
|
|
|
module_name = 'blah'
|
|
|
|
def setUp(self):
|
|
import_helper.unload(self.module_name)
|
|
self.addCleanup(import_helper.unload, self.module_name)
|
|
|
|
def load(self, loader):
|
|
spec = self.util.spec_from_loader(self.module_name, loader)
|
|
with warnings.catch_warnings():
|
|
warnings.simplefilter('ignore', DeprecationWarning)
|
|
return self.init._bootstrap._load_unlocked(spec)
|
|
|
|
def mock_get_code(self):
|
|
return mock.patch.object(self.InspectLoaderSubclass, 'get_code')
|
|
|
|
def test_get_code_ImportError(self):
|
|
# If get_code() raises ImportError, it should propagate.
|
|
with self.mock_get_code() as mocked_get_code:
|
|
mocked_get_code.side_effect = ImportError
|
|
with self.assertRaises(ImportError):
|
|
loader = self.InspectLoaderSubclass()
|
|
self.load(loader)
|
|
|
|
def test_get_code_None(self):
|
|
# If get_code() returns None, raise ImportError.
|
|
with self.mock_get_code() as mocked_get_code:
|
|
mocked_get_code.return_value = None
|
|
with self.assertRaises(ImportError):
|
|
loader = self.InspectLoaderSubclass()
|
|
self.load(loader)
|
|
|
|
def test_module_returned(self):
|
|
# The loaded module should be returned.
|
|
code = compile('attr = 42', '<string>', 'exec')
|
|
with self.mock_get_code() as mocked_get_code:
|
|
mocked_get_code.return_value = code
|
|
loader = self.InspectLoaderSubclass()
|
|
module = self.load(loader)
|
|
self.assertEqual(module, sys.modules[self.module_name])
|
|
|
|
|
|
(Frozen_ILLoadModuleTests,
|
|
Source_ILLoadModuleTests
|
|
) = test_util.test_both(InspectLoaderLoadModuleTests,
|
|
InspectLoaderSubclass=SPLIT_IL,
|
|
init=init,
|
|
util=util)
|
|
|
|
|
|
##### ExecutionLoader concrete methods #########################################
|
|
class ExecutionLoaderGetCodeTests:
|
|
|
|
def mock_methods(self, *, get_source=False, get_filename=False):
|
|
source_mock_context, filename_mock_context = None, None
|
|
if get_source:
|
|
source_mock_context = mock.patch.object(self.ExecutionLoaderSubclass,
|
|
'get_source')
|
|
if get_filename:
|
|
filename_mock_context = mock.patch.object(self.ExecutionLoaderSubclass,
|
|
'get_filename')
|
|
return source_mock_context, filename_mock_context
|
|
|
|
def test_get_code(self):
|
|
path = 'blah.py'
|
|
source_mock_context, filename_mock_context = self.mock_methods(
|
|
get_source=True, get_filename=True)
|
|
with source_mock_context as source_mock, filename_mock_context as name_mock:
|
|
source_mock.return_value = 'attr = 42'
|
|
name_mock.return_value = path
|
|
loader = self.ExecutionLoaderSubclass()
|
|
code = loader.get_code('blah')
|
|
self.assertEqual(code.co_filename, path)
|
|
module = types.ModuleType('blah')
|
|
exec(code, module.__dict__)
|
|
self.assertEqual(module.attr, 42)
|
|
|
|
def test_get_code_source_is_None(self):
|
|
# If get_source() is None then this should be None.
|
|
source_mock_context, _ = self.mock_methods(get_source=True)
|
|
with source_mock_context as mocked:
|
|
mocked.return_value = None
|
|
loader = self.ExecutionLoaderSubclass()
|
|
code = loader.get_code('blah')
|
|
self.assertIsNone(code)
|
|
|
|
def test_get_code_source_not_found(self):
|
|
# If there is no source then there is no code object.
|
|
loader = self.ExecutionLoaderSubclass()
|
|
with self.assertRaises(ImportError):
|
|
loader.get_code('blah')
|
|
|
|
def test_get_code_no_path(self):
|
|
# If get_filename() raises ImportError then simply skip setting the path
|
|
# on the code object.
|
|
source_mock_context, filename_mock_context = self.mock_methods(
|
|
get_source=True, get_filename=True)
|
|
with source_mock_context as source_mock, filename_mock_context as name_mock:
|
|
source_mock.return_value = 'attr = 42'
|
|
name_mock.side_effect = ImportError
|
|
loader = self.ExecutionLoaderSubclass()
|
|
code = loader.get_code('blah')
|
|
self.assertEqual(code.co_filename, '<string>')
|
|
module = types.ModuleType('blah')
|
|
exec(code, module.__dict__)
|
|
self.assertEqual(module.attr, 42)
|
|
|
|
|
|
(Frozen_ELGetCodeTests,
|
|
Source_ELGetCodeTests
|
|
) = test_util.test_both(ExecutionLoaderGetCodeTests,
|
|
ExecutionLoaderSubclass=SPLIT_EL)
|
|
|
|
|
|
##### SourceLoader concrete methods ############################################
|
|
class SourceOnlyLoader:
|
|
|
|
# Globals that should be defined for all modules.
|
|
source = (b"_ = '::'.join([__name__, __file__, __cached__, __package__, "
|
|
b"repr(__loader__)])")
|
|
|
|
def __init__(self, path):
|
|
self.path = path
|
|
|
|
def get_data(self, path):
|
|
if path != self.path:
|
|
raise IOError
|
|
return self.source
|
|
|
|
def get_filename(self, fullname):
|
|
return self.path
|
|
|
|
def module_repr(self, module):
|
|
return '<module>'
|
|
|
|
|
|
SPLIT_SOL = make_abc_subclasses(SourceOnlyLoader, 'SourceLoader')
|
|
|
|
|
|
class SourceLoader(SourceOnlyLoader):
|
|
|
|
source_mtime = 1
|
|
|
|
def __init__(self, path, magic=None):
|
|
super().__init__(path)
|
|
self.bytecode_path = self.util.cache_from_source(self.path)
|
|
self.source_size = len(self.source)
|
|
if magic is None:
|
|
magic = self.util.MAGIC_NUMBER
|
|
data = bytearray(magic)
|
|
data.extend(self.init._pack_uint32(0))
|
|
data.extend(self.init._pack_uint32(self.source_mtime))
|
|
data.extend(self.init._pack_uint32(self.source_size))
|
|
code_object = compile(self.source, self.path, 'exec',
|
|
dont_inherit=True)
|
|
data.extend(marshal.dumps(code_object))
|
|
self.bytecode = bytes(data)
|
|
self.written = {}
|
|
|
|
def get_data(self, path):
|
|
if path == self.path:
|
|
return super().get_data(path)
|
|
elif path == self.bytecode_path:
|
|
return self.bytecode
|
|
else:
|
|
raise OSError
|
|
|
|
def path_stats(self, path):
|
|
if path != self.path:
|
|
raise IOError
|
|
return {'mtime': self.source_mtime, 'size': self.source_size}
|
|
|
|
def set_data(self, path, data):
|
|
self.written[path] = bytes(data)
|
|
return path == self.bytecode_path
|
|
|
|
|
|
SPLIT_SL = make_abc_subclasses(SourceLoader, util=util, init=init)
|
|
|
|
|
|
class SourceLoaderTestHarness:
|
|
|
|
def setUp(self, *, is_package=True, **kwargs):
|
|
self.package = 'pkg'
|
|
if is_package:
|
|
self.path = os.path.join(self.package, '__init__.py')
|
|
self.name = self.package
|
|
else:
|
|
module_name = 'mod'
|
|
self.path = os.path.join(self.package, '.'.join(['mod', 'py']))
|
|
self.name = '.'.join([self.package, module_name])
|
|
self.cached = self.util.cache_from_source(self.path)
|
|
self.loader = self.loader_mock(self.path, **kwargs)
|
|
|
|
def verify_module(self, module):
|
|
self.assertEqual(module.__name__, self.name)
|
|
self.assertEqual(module.__file__, self.path)
|
|
self.assertEqual(module.__cached__, self.cached)
|
|
self.assertEqual(module.__package__, self.package)
|
|
self.assertEqual(module.__loader__, self.loader)
|
|
values = module._.split('::')
|
|
self.assertEqual(values[0], self.name)
|
|
self.assertEqual(values[1], self.path)
|
|
self.assertEqual(values[2], self.cached)
|
|
self.assertEqual(values[3], self.package)
|
|
self.assertEqual(values[4], repr(self.loader))
|
|
|
|
def verify_code(self, code_object):
|
|
module = types.ModuleType(self.name)
|
|
module.__file__ = self.path
|
|
module.__cached__ = self.cached
|
|
module.__package__ = self.package
|
|
module.__loader__ = self.loader
|
|
module.__path__ = []
|
|
exec(code_object, module.__dict__)
|
|
self.verify_module(module)
|
|
|
|
|
|
class SourceOnlyLoaderTests(SourceLoaderTestHarness):
|
|
|
|
"""Test importlib.abc.SourceLoader for source-only loading.
|
|
|
|
Reload testing is subsumed by the tests for
|
|
importlib.util.module_for_loader.
|
|
|
|
"""
|
|
|
|
def test_get_source(self):
|
|
# Verify the source code is returned as a string.
|
|
# If an OSError is raised by get_data then raise ImportError.
|
|
expected_source = self.loader.source.decode('utf-8')
|
|
self.assertEqual(self.loader.get_source(self.name), expected_source)
|
|
def raise_OSError(path):
|
|
raise OSError
|
|
self.loader.get_data = raise_OSError
|
|
with self.assertRaises(ImportError) as cm:
|
|
self.loader.get_source(self.name)
|
|
self.assertEqual(cm.exception.name, self.name)
|
|
|
|
def test_is_package(self):
|
|
# Properly detect when loading a package.
|
|
self.setUp(is_package=False)
|
|
self.assertFalse(self.loader.is_package(self.name))
|
|
self.setUp(is_package=True)
|
|
self.assertTrue(self.loader.is_package(self.name))
|
|
self.assertFalse(self.loader.is_package(self.name + '.__init__'))
|
|
|
|
def test_get_code(self):
|
|
# Verify the code object is created.
|
|
code_object = self.loader.get_code(self.name)
|
|
self.verify_code(code_object)
|
|
|
|
def test_source_to_code(self):
|
|
# Verify the compiled code object.
|
|
code = self.loader.source_to_code(self.loader.source, self.path)
|
|
self.verify_code(code)
|
|
|
|
def test_load_module(self):
|
|
# Loading a module should set __name__, __loader__, __package__,
|
|
# __path__ (for packages), __file__, and __cached__.
|
|
# The module should also be put into sys.modules.
|
|
with test_util.uncache(self.name):
|
|
with warnings.catch_warnings():
|
|
warnings.simplefilter('ignore', DeprecationWarning)
|
|
module = self.loader.load_module(self.name)
|
|
self.verify_module(module)
|
|
self.assertEqual(module.__path__, [os.path.dirname(self.path)])
|
|
self.assertIn(self.name, sys.modules)
|
|
|
|
def test_package_settings(self):
|
|
# __package__ needs to be set, while __path__ is set on if the module
|
|
# is a package.
|
|
# Testing the values for a package are covered by test_load_module.
|
|
self.setUp(is_package=False)
|
|
with test_util.uncache(self.name):
|
|
with warnings.catch_warnings():
|
|
warnings.simplefilter('ignore', DeprecationWarning)
|
|
module = self.loader.load_module(self.name)
|
|
self.verify_module(module)
|
|
self.assertFalse(hasattr(module, '__path__'))
|
|
|
|
def test_get_source_encoding(self):
|
|
# Source is considered encoded in UTF-8 by default unless otherwise
|
|
# specified by an encoding line.
|
|
source = "_ = 'ü'"
|
|
self.loader.source = source.encode('utf-8')
|
|
returned_source = self.loader.get_source(self.name)
|
|
self.assertEqual(returned_source, source)
|
|
source = "# coding: latin-1\n_ = ü"
|
|
self.loader.source = source.encode('latin-1')
|
|
returned_source = self.loader.get_source(self.name)
|
|
self.assertEqual(returned_source, source)
|
|
|
|
|
|
(Frozen_SourceOnlyLoaderTests,
|
|
Source_SourceOnlyLoaderTests
|
|
) = test_util.test_both(SourceOnlyLoaderTests, util=util,
|
|
loader_mock=SPLIT_SOL)
|
|
|
|
|
|
@unittest.skipIf(sys.dont_write_bytecode, "sys.dont_write_bytecode is true")
|
|
class SourceLoaderBytecodeTests(SourceLoaderTestHarness):
|
|
|
|
"""Test importlib.abc.SourceLoader's use of bytecode.
|
|
|
|
Source-only testing handled by SourceOnlyLoaderTests.
|
|
|
|
"""
|
|
|
|
def verify_code(self, code_object, *, bytecode_written=False):
|
|
super().verify_code(code_object)
|
|
if bytecode_written:
|
|
self.assertIn(self.cached, self.loader.written)
|
|
data = bytearray(self.util.MAGIC_NUMBER)
|
|
data.extend(self.init._pack_uint32(0))
|
|
data.extend(self.init._pack_uint32(self.loader.source_mtime))
|
|
data.extend(self.init._pack_uint32(self.loader.source_size))
|
|
data.extend(marshal.dumps(code_object))
|
|
self.assertEqual(self.loader.written[self.cached], bytes(data))
|
|
|
|
def test_code_with_everything(self):
|
|
# When everything should work.
|
|
code_object = self.loader.get_code(self.name)
|
|
self.verify_code(code_object)
|
|
|
|
def test_no_bytecode(self):
|
|
# If no bytecode exists then move on to the source.
|
|
self.loader.bytecode_path = "<does not exist>"
|
|
# Sanity check
|
|
with self.assertRaises(OSError):
|
|
bytecode_path = self.util.cache_from_source(self.path)
|
|
self.loader.get_data(bytecode_path)
|
|
code_object = self.loader.get_code(self.name)
|
|
self.verify_code(code_object, bytecode_written=True)
|
|
|
|
def test_code_bad_timestamp(self):
|
|
# Bytecode is only used when the timestamp matches the source EXACTLY.
|
|
for source_mtime in (0, 2):
|
|
assert source_mtime != self.loader.source_mtime
|
|
original = self.loader.source_mtime
|
|
self.loader.source_mtime = source_mtime
|
|
# If bytecode is used then EOFError would be raised by marshal.
|
|
self.loader.bytecode = self.loader.bytecode[8:]
|
|
code_object = self.loader.get_code(self.name)
|
|
self.verify_code(code_object, bytecode_written=True)
|
|
self.loader.source_mtime = original
|
|
|
|
def test_code_bad_magic(self):
|
|
# Skip over bytecode with a bad magic number.
|
|
self.setUp(magic=b'0000')
|
|
# If bytecode is used then EOFError would be raised by marshal.
|
|
self.loader.bytecode = self.loader.bytecode[8:]
|
|
code_object = self.loader.get_code(self.name)
|
|
self.verify_code(code_object, bytecode_written=True)
|
|
|
|
def test_dont_write_bytecode(self):
|
|
# Bytecode is not written if sys.dont_write_bytecode is true.
|
|
# Can assume it is false already thanks to the skipIf class decorator.
|
|
try:
|
|
sys.dont_write_bytecode = True
|
|
self.loader.bytecode_path = "<does not exist>"
|
|
code_object = self.loader.get_code(self.name)
|
|
self.assertNotIn(self.cached, self.loader.written)
|
|
finally:
|
|
sys.dont_write_bytecode = False
|
|
|
|
def test_no_set_data(self):
|
|
# If set_data is not defined, one can still read bytecode.
|
|
self.setUp(magic=b'0000')
|
|
original_set_data = self.loader.__class__.mro()[1].set_data
|
|
try:
|
|
del self.loader.__class__.mro()[1].set_data
|
|
code_object = self.loader.get_code(self.name)
|
|
self.verify_code(code_object)
|
|
finally:
|
|
self.loader.__class__.mro()[1].set_data = original_set_data
|
|
|
|
def test_set_data_raises_exceptions(self):
|
|
# Raising NotImplementedError or OSError is okay for set_data.
|
|
def raise_exception(exc):
|
|
def closure(*args, **kwargs):
|
|
raise exc
|
|
return closure
|
|
|
|
self.setUp(magic=b'0000')
|
|
self.loader.set_data = raise_exception(NotImplementedError)
|
|
code_object = self.loader.get_code(self.name)
|
|
self.verify_code(code_object)
|
|
|
|
|
|
(Frozen_SLBytecodeTests,
|
|
SourceSLBytecodeTests
|
|
) = test_util.test_both(SourceLoaderBytecodeTests, init=init, util=util,
|
|
loader_mock=SPLIT_SL)
|
|
|
|
|
|
class SourceLoaderGetSourceTests:
|
|
|
|
"""Tests for importlib.abc.SourceLoader.get_source()."""
|
|
|
|
def test_default_encoding(self):
|
|
# Should have no problems with UTF-8 text.
|
|
name = 'mod'
|
|
mock = self.SourceOnlyLoaderMock('mod.file')
|
|
source = 'x = "ü"'
|
|
mock.source = source.encode('utf-8')
|
|
returned_source = mock.get_source(name)
|
|
self.assertEqual(returned_source, source)
|
|
|
|
def test_decoded_source(self):
|
|
# Decoding should work.
|
|
name = 'mod'
|
|
mock = self.SourceOnlyLoaderMock("mod.file")
|
|
source = "# coding: Latin-1\nx='ü'"
|
|
assert source.encode('latin-1') != source.encode('utf-8')
|
|
mock.source = source.encode('latin-1')
|
|
returned_source = mock.get_source(name)
|
|
self.assertEqual(returned_source, source)
|
|
|
|
def test_universal_newlines(self):
|
|
# PEP 302 says universal newlines should be used.
|
|
name = 'mod'
|
|
mock = self.SourceOnlyLoaderMock('mod.file')
|
|
source = "x = 42\r\ny = -13\r\n"
|
|
mock.source = source.encode('utf-8')
|
|
expect = io.IncrementalNewlineDecoder(None, True).decode(source)
|
|
self.assertEqual(mock.get_source(name), expect)
|
|
|
|
|
|
(Frozen_SourceOnlyLoaderGetSourceTests,
|
|
Source_SourceOnlyLoaderGetSourceTests
|
|
) = test_util.test_both(SourceLoaderGetSourceTests,
|
|
SourceOnlyLoaderMock=SPLIT_SOL)
|
|
|
|
|
|
if __name__ == '__main__':
|
|
unittest.main()
|