from . import util as test_util init = test_util.import_importlib('importlib') machinery = test_util.import_importlib('importlib.machinery') util = test_util.import_importlib('importlib.util') import os.path from test.support import CleanImport import unittest import sys import warnings class TestLoader: def __init__(self, path=None, is_package=None): self.path = path self.package = is_package def __repr__(self): return '' def __getattr__(self, name): if name == 'get_filename' and self.path is not None: return self._get_filename if name == 'is_package': return self._is_package raise AttributeError(name) def _get_filename(self, name): return self.path def _is_package(self, name): return self.package def create_module(self, spec): return None class NewLoader(TestLoader): EGGS = 1 def exec_module(self, module): module.eggs = self.EGGS class LegacyLoader(TestLoader): HAM = -1 with warnings.catch_warnings(): warnings.simplefilter("ignore", DeprecationWarning) frozen_util = util['Frozen'] @frozen_util.module_for_loader def load_module(self, module): module.ham = self.HAM return module class ModuleSpecTests: def setUp(self): self.name = 'spam' self.path = 'spam.py' self.cached = self.util.cache_from_source(self.path) self.loader = TestLoader() self.spec = self.machinery.ModuleSpec(self.name, self.loader) self.loc_spec = self.machinery.ModuleSpec(self.name, self.loader, origin=self.path) self.loc_spec._set_fileattr = True def test_default(self): spec = self.machinery.ModuleSpec(self.name, self.loader) self.assertEqual(spec.name, self.name) self.assertEqual(spec.loader, self.loader) self.assertIs(spec.origin, None) self.assertIs(spec.loader_state, None) self.assertIs(spec.submodule_search_locations, None) self.assertIs(spec.cached, None) self.assertFalse(spec.has_location) def test_default_no_loader(self): spec = self.machinery.ModuleSpec(self.name, None) self.assertEqual(spec.name, self.name) self.assertIs(spec.loader, None) self.assertIs(spec.origin, None) self.assertIs(spec.loader_state, None) self.assertIs(spec.submodule_search_locations, None) self.assertIs(spec.cached, None) self.assertFalse(spec.has_location) def test_default_is_package_false(self): spec = self.machinery.ModuleSpec(self.name, self.loader, is_package=False) self.assertEqual(spec.name, self.name) self.assertEqual(spec.loader, self.loader) self.assertIs(spec.origin, None) self.assertIs(spec.loader_state, None) self.assertIs(spec.submodule_search_locations, None) self.assertIs(spec.cached, None) self.assertFalse(spec.has_location) def test_default_is_package_true(self): spec = self.machinery.ModuleSpec(self.name, self.loader, is_package=True) self.assertEqual(spec.name, self.name) self.assertEqual(spec.loader, self.loader) self.assertIs(spec.origin, None) self.assertIs(spec.loader_state, None) self.assertEqual(spec.submodule_search_locations, []) self.assertIs(spec.cached, None) self.assertFalse(spec.has_location) def test_has_location_setter(self): spec = self.machinery.ModuleSpec(self.name, self.loader, origin='somewhere') self.assertFalse(spec.has_location) spec.has_location = True self.assertTrue(spec.has_location) def test_equality(self): other = type(sys.implementation)(name=self.name, loader=self.loader, origin=None, submodule_search_locations=None, has_location=False, cached=None, ) self.assertTrue(self.spec == other) def test_equality_location(self): other = type(sys.implementation)(name=self.name, loader=self.loader, origin=self.path, submodule_search_locations=None, has_location=True, cached=self.cached, ) self.assertEqual(self.loc_spec, other) def test_inequality(self): other = type(sys.implementation)(name='ham', loader=self.loader, origin=None, submodule_search_locations=None, has_location=False, cached=None, ) self.assertNotEqual(self.spec, other) def test_inequality_incomplete(self): other = type(sys.implementation)(name=self.name, loader=self.loader, ) self.assertNotEqual(self.spec, other) def test_package(self): spec = self.machinery.ModuleSpec('spam.eggs', self.loader) self.assertEqual(spec.parent, 'spam') def test_package_is_package(self): spec = self.machinery.ModuleSpec('spam.eggs', self.loader, is_package=True) self.assertEqual(spec.parent, 'spam.eggs') # cached def test_cached_set(self): before = self.spec.cached self.spec.cached = 'there' after = self.spec.cached self.assertIs(before, None) self.assertEqual(after, 'there') def test_cached_no_origin(self): spec = self.machinery.ModuleSpec(self.name, self.loader) self.assertIs(spec.cached, None) def test_cached_with_origin_not_location(self): spec = self.machinery.ModuleSpec(self.name, self.loader, origin=self.path) self.assertIs(spec.cached, None) def test_cached_source(self): expected = self.util.cache_from_source(self.path) self.assertEqual(self.loc_spec.cached, expected) def test_cached_source_unknown_suffix(self): self.loc_spec.origin = 'spam.spamspamspam' self.assertIs(self.loc_spec.cached, None) def test_cached_source_missing_cache_tag(self): original = sys.implementation.cache_tag sys.implementation.cache_tag = None try: cached = self.loc_spec.cached finally: sys.implementation.cache_tag = original self.assertIs(cached, None) def test_cached_sourceless(self): self.loc_spec.origin = 'spam.pyc' self.assertEqual(self.loc_spec.cached, 'spam.pyc') (Frozen_ModuleSpecTests, Source_ModuleSpecTests ) = test_util.test_both(ModuleSpecTests, util=util, machinery=machinery) class ModuleSpecMethodsTests: @property def bootstrap(self): return self.init._bootstrap def setUp(self): self.name = 'spam' self.path = 'spam.py' self.cached = self.util.cache_from_source(self.path) self.loader = TestLoader() self.spec = self.machinery.ModuleSpec(self.name, self.loader) self.loc_spec = self.machinery.ModuleSpec(self.name, self.loader, origin=self.path) self.loc_spec._set_fileattr = True # exec() def test_exec(self): self.spec.loader = NewLoader() module = self.util.module_from_spec(self.spec) sys.modules[self.name] = module self.assertFalse(hasattr(module, 'eggs')) self.bootstrap._exec(self.spec, module) self.assertEqual(module.eggs, 1) # load() def test_load(self): self.spec.loader = NewLoader() with CleanImport(self.spec.name): loaded = self.bootstrap._load(self.spec) installed = sys.modules[self.spec.name] self.assertEqual(loaded.eggs, 1) self.assertIs(loaded, installed) def test_load_replaced(self): replacement = object() class ReplacingLoader(TestLoader): def exec_module(self, module): sys.modules[module.__name__] = replacement self.spec.loader = ReplacingLoader() with CleanImport(self.spec.name): loaded = self.bootstrap._load(self.spec) installed = sys.modules[self.spec.name] self.assertIs(loaded, replacement) self.assertIs(installed, replacement) def test_load_failed(self): class FailedLoader(TestLoader): def exec_module(self, module): raise RuntimeError self.spec.loader = FailedLoader() with CleanImport(self.spec.name): with self.assertRaises(RuntimeError): loaded = self.bootstrap._load(self.spec) self.assertNotIn(self.spec.name, sys.modules) def test_load_failed_removed(self): class FailedLoader(TestLoader): def exec_module(self, module): del sys.modules[module.__name__] raise RuntimeError self.spec.loader = FailedLoader() with CleanImport(self.spec.name): with self.assertRaises(RuntimeError): loaded = self.bootstrap._load(self.spec) self.assertNotIn(self.spec.name, sys.modules) def test_load_legacy(self): self.spec.loader = LegacyLoader() with CleanImport(self.spec.name): loaded = self.bootstrap._load(self.spec) self.assertEqual(loaded.ham, -1) def test_load_legacy_attributes(self): self.spec.loader = LegacyLoader() with CleanImport(self.spec.name): loaded = self.bootstrap._load(self.spec) self.assertIs(loaded.__loader__, self.spec.loader) self.assertEqual(loaded.__package__, self.spec.parent) self.assertIs(loaded.__spec__, self.spec) def test_load_legacy_attributes_immutable(self): module = object() class ImmutableLoader(TestLoader): def load_module(self, name): sys.modules[name] = module return module self.spec.loader = ImmutableLoader() with CleanImport(self.spec.name): loaded = self.bootstrap._load(self.spec) self.assertIs(sys.modules[self.spec.name], module) # reload() def test_reload(self): self.spec.loader = NewLoader() with CleanImport(self.spec.name): loaded = self.bootstrap._load(self.spec) reloaded = self.bootstrap._exec(self.spec, loaded) installed = sys.modules[self.spec.name] self.assertEqual(loaded.eggs, 1) self.assertIs(reloaded, loaded) self.assertIs(installed, loaded) def test_reload_modified(self): self.spec.loader = NewLoader() with CleanImport(self.spec.name): loaded = self.bootstrap._load(self.spec) loaded.eggs = 2 reloaded = self.bootstrap._exec(self.spec, loaded) self.assertEqual(loaded.eggs, 1) self.assertIs(reloaded, loaded) def test_reload_extra_attributes(self): self.spec.loader = NewLoader() with CleanImport(self.spec.name): loaded = self.bootstrap._load(self.spec) loaded.available = False reloaded = self.bootstrap._exec(self.spec, loaded) self.assertFalse(loaded.available) self.assertIs(reloaded, loaded) def test_reload_init_module_attrs(self): self.spec.loader = NewLoader() with CleanImport(self.spec.name): loaded = self.bootstrap._load(self.spec) loaded.__name__ = 'ham' del loaded.__loader__ del loaded.__package__ del loaded.__spec__ self.bootstrap._exec(self.spec, loaded) self.assertEqual(loaded.__name__, self.spec.name) self.assertIs(loaded.__loader__, self.spec.loader) self.assertEqual(loaded.__package__, self.spec.parent) self.assertIs(loaded.__spec__, self.spec) self.assertFalse(hasattr(loaded, '__path__')) self.assertFalse(hasattr(loaded, '__file__')) self.assertFalse(hasattr(loaded, '__cached__')) def test_reload_legacy(self): self.spec.loader = LegacyLoader() with CleanImport(self.spec.name): loaded = self.bootstrap._load(self.spec) reloaded = self.bootstrap._exec(self.spec, loaded) installed = sys.modules[self.spec.name] self.assertEqual(loaded.ham, -1) self.assertIs(reloaded, loaded) self.assertIs(installed, loaded) (Frozen_ModuleSpecMethodsTests, Source_ModuleSpecMethodsTests ) = test_util.test_both(ModuleSpecMethodsTests, init=init, util=util, machinery=machinery) class ModuleReprTests: @property def bootstrap(self): return self.init._bootstrap def setUp(self): self.module = type(os)('spam') self.spec = self.machinery.ModuleSpec('spam', TestLoader()) def test_module___loader___module_repr(self): class Loader: def module_repr(self, module): return ''.format(module.__name__) self.module.__loader__ = Loader() modrepr = self.bootstrap._module_repr(self.module) self.assertEqual(modrepr, '') def test_module___loader___module_repr_bad(self): class Loader(TestLoader): def module_repr(self, module): raise Exception self.module.__loader__ = Loader() modrepr = self.bootstrap._module_repr(self.module) self.assertEqual(modrepr, ')>'.format('spam')) def test_module___spec__(self): origin = 'in a hole, in the ground' self.spec.origin = origin self.module.__spec__ = self.spec modrepr = self.bootstrap._module_repr(self.module) self.assertEqual(modrepr, ''.format('spam', origin)) def test_module___spec___location(self): location = 'in_a_galaxy_far_far_away.py' self.spec.origin = location self.spec._set_fileattr = True self.module.__spec__ = self.spec modrepr = self.bootstrap._module_repr(self.module) self.assertEqual(modrepr, ''.format('spam', location)) def test_module___spec___no_origin(self): self.spec.loader = TestLoader() self.module.__spec__ = self.spec modrepr = self.bootstrap._module_repr(self.module) self.assertEqual(modrepr, ')>'.format('spam')) def test_module___spec___no_origin_no_loader(self): self.spec.loader = None self.module.__spec__ = self.spec modrepr = self.bootstrap._module_repr(self.module) self.assertEqual(modrepr, ''.format('spam')) def test_module_no_name(self): del self.module.__name__ modrepr = self.bootstrap._module_repr(self.module) self.assertEqual(modrepr, ''.format('?')) def test_module_with_file(self): filename = 'e/i/e/i/o/spam.py' self.module.__file__ = filename modrepr = self.bootstrap._module_repr(self.module) self.assertEqual(modrepr, ''.format('spam', filename)) def test_module_no_file(self): self.module.__loader__ = TestLoader() modrepr = self.bootstrap._module_repr(self.module) self.assertEqual(modrepr, ')>'.format('spam')) def test_module_no_file_no_loader(self): modrepr = self.bootstrap._module_repr(self.module) self.assertEqual(modrepr, ''.format('spam')) (Frozen_ModuleReprTests, Source_ModuleReprTests ) = test_util.test_both(ModuleReprTests, init=init, util=util, machinery=machinery) class FactoryTests: def setUp(self): self.name = 'spam' self.path = 'spam.py' self.cached = self.util.cache_from_source(self.path) self.loader = TestLoader() self.fileloader = TestLoader(self.path) self.pkgloader = TestLoader(self.path, True) # spec_from_loader() def test_spec_from_loader_default(self): spec = self.util.spec_from_loader(self.name, self.loader) self.assertEqual(spec.name, self.name) self.assertEqual(spec.loader, self.loader) self.assertIs(spec.origin, None) self.assertIs(spec.loader_state, None) self.assertIs(spec.submodule_search_locations, None) self.assertIs(spec.cached, None) self.assertFalse(spec.has_location) def test_spec_from_loader_default_with_bad_is_package(self): class Loader: def is_package(self, name): raise ImportError loader = Loader() spec = self.util.spec_from_loader(self.name, loader) self.assertEqual(spec.name, self.name) self.assertEqual(spec.loader, loader) self.assertIs(spec.origin, None) self.assertIs(spec.loader_state, None) self.assertIs(spec.submodule_search_locations, None) self.assertIs(spec.cached, None) self.assertFalse(spec.has_location) def test_spec_from_loader_origin(self): origin = 'somewhere over the rainbow' spec = self.util.spec_from_loader(self.name, self.loader, origin=origin) self.assertEqual(spec.name, self.name) self.assertEqual(spec.loader, self.loader) self.assertIs(spec.origin, origin) self.assertIs(spec.loader_state, None) self.assertIs(spec.submodule_search_locations, None) self.assertIs(spec.cached, None) self.assertFalse(spec.has_location) def test_spec_from_loader_is_package_false(self): spec = self.util.spec_from_loader(self.name, self.loader, is_package=False) self.assertEqual(spec.name, self.name) self.assertEqual(spec.loader, self.loader) self.assertIs(spec.origin, None) self.assertIs(spec.loader_state, None) self.assertIs(spec.submodule_search_locations, None) self.assertIs(spec.cached, None) self.assertFalse(spec.has_location) def test_spec_from_loader_is_package_true(self): spec = self.util.spec_from_loader(self.name, self.loader, is_package=True) self.assertEqual(spec.name, self.name) self.assertEqual(spec.loader, self.loader) self.assertIs(spec.origin, None) self.assertIs(spec.loader_state, None) self.assertEqual(spec.submodule_search_locations, []) self.assertIs(spec.cached, None) self.assertFalse(spec.has_location) def test_spec_from_loader_origin_and_is_package(self): origin = 'where the streets have no name' spec = self.util.spec_from_loader(self.name, self.loader, origin=origin, is_package=True) self.assertEqual(spec.name, self.name) self.assertEqual(spec.loader, self.loader) self.assertIs(spec.origin, origin) self.assertIs(spec.loader_state, None) self.assertEqual(spec.submodule_search_locations, []) self.assertIs(spec.cached, None) self.assertFalse(spec.has_location) def test_spec_from_loader_is_package_with_loader_false(self): loader = TestLoader(is_package=False) spec = self.util.spec_from_loader(self.name, loader) self.assertEqual(spec.name, self.name) self.assertEqual(spec.loader, loader) self.assertIs(spec.origin, None) self.assertIs(spec.loader_state, None) self.assertIs(spec.submodule_search_locations, None) self.assertIs(spec.cached, None) self.assertFalse(spec.has_location) def test_spec_from_loader_is_package_with_loader_true(self): loader = TestLoader(is_package=True) spec = self.util.spec_from_loader(self.name, loader) self.assertEqual(spec.name, self.name) self.assertEqual(spec.loader, loader) self.assertIs(spec.origin, None) self.assertIs(spec.loader_state, None) self.assertEqual(spec.submodule_search_locations, []) self.assertIs(spec.cached, None) self.assertFalse(spec.has_location) def test_spec_from_loader_default_with_file_loader(self): spec = self.util.spec_from_loader(self.name, self.fileloader) self.assertEqual(spec.name, self.name) self.assertEqual(spec.loader, self.fileloader) self.assertEqual(spec.origin, self.path) self.assertIs(spec.loader_state, None) self.assertIs(spec.submodule_search_locations, None) self.assertEqual(spec.cached, self.cached) self.assertTrue(spec.has_location) def test_spec_from_loader_is_package_false_with_fileloader(self): spec = self.util.spec_from_loader(self.name, self.fileloader, is_package=False) self.assertEqual(spec.name, self.name) self.assertEqual(spec.loader, self.fileloader) self.assertEqual(spec.origin, self.path) self.assertIs(spec.loader_state, None) self.assertIs(spec.submodule_search_locations, None) self.assertEqual(spec.cached, self.cached) self.assertTrue(spec.has_location) def test_spec_from_loader_is_package_true_with_fileloader(self): spec = self.util.spec_from_loader(self.name, self.fileloader, is_package=True) self.assertEqual(spec.name, self.name) self.assertEqual(spec.loader, self.fileloader) self.assertEqual(spec.origin, self.path) self.assertIs(spec.loader_state, None) self.assertEqual(spec.submodule_search_locations, ['']) self.assertEqual(spec.cached, self.cached) self.assertTrue(spec.has_location) # spec_from_file_location() def test_spec_from_file_location_default(self): spec = self.util.spec_from_file_location(self.name, self.path) self.assertEqual(spec.name, self.name) # Need to use a circuitous route to get at importlib.machinery to make # sure the same class object is used in the isinstance() check as # would have been used to create the loader. self.assertIsInstance(spec.loader, self.util.abc.machinery.SourceFileLoader) self.assertEqual(spec.loader.name, self.name) self.assertEqual(spec.loader.path, self.path) self.assertEqual(spec.origin, self.path) self.assertIs(spec.loader_state, None) self.assertIs(spec.submodule_search_locations, None) self.assertEqual(spec.cached, self.cached) self.assertTrue(spec.has_location) def test_spec_from_file_location_default_without_location(self): spec = self.util.spec_from_file_location(self.name) self.assertIs(spec, None) def test_spec_from_file_location_default_bad_suffix(self): spec = self.util.spec_from_file_location(self.name, 'spam.eggs') self.assertIs(spec, None) def test_spec_from_file_location_loader_no_location(self): spec = self.util.spec_from_file_location(self.name, loader=self.fileloader) self.assertEqual(spec.name, self.name) self.assertEqual(spec.loader, self.fileloader) self.assertEqual(spec.origin, self.path) self.assertIs(spec.loader_state, None) self.assertIs(spec.submodule_search_locations, None) self.assertEqual(spec.cached, self.cached) self.assertTrue(spec.has_location) def test_spec_from_file_location_loader_no_location_no_get_filename(self): spec = self.util.spec_from_file_location(self.name, loader=self.loader) self.assertEqual(spec.name, self.name) self.assertEqual(spec.loader, self.loader) self.assertEqual(spec.origin, '') self.assertIs(spec.loader_state, None) self.assertIs(spec.submodule_search_locations, None) self.assertIs(spec.cached, None) self.assertTrue(spec.has_location) def test_spec_from_file_location_loader_no_location_bad_get_filename(self): class Loader: def get_filename(self, name): raise ImportError loader = Loader() spec = self.util.spec_from_file_location(self.name, loader=loader) self.assertEqual(spec.name, self.name) self.assertEqual(spec.loader, loader) self.assertEqual(spec.origin, '') self.assertIs(spec.loader_state, None) self.assertIs(spec.submodule_search_locations, None) self.assertIs(spec.cached, None) self.assertTrue(spec.has_location) def test_spec_from_file_location_smsl_none(self): spec = self.util.spec_from_file_location(self.name, self.path, loader=self.fileloader, submodule_search_locations=None) self.assertEqual(spec.name, self.name) self.assertEqual(spec.loader, self.fileloader) self.assertEqual(spec.origin, self.path) self.assertIs(spec.loader_state, None) self.assertIs(spec.submodule_search_locations, None) self.assertEqual(spec.cached, self.cached) self.assertTrue(spec.has_location) def test_spec_from_file_location_smsl_empty(self): spec = self.util.spec_from_file_location(self.name, self.path, loader=self.fileloader, submodule_search_locations=[]) self.assertEqual(spec.name, self.name) self.assertEqual(spec.loader, self.fileloader) self.assertEqual(spec.origin, self.path) self.assertIs(spec.loader_state, None) self.assertEqual(spec.submodule_search_locations, ['']) self.assertEqual(spec.cached, self.cached) self.assertTrue(spec.has_location) def test_spec_from_file_location_smsl_not_empty(self): spec = self.util.spec_from_file_location(self.name, self.path, loader=self.fileloader, submodule_search_locations=['eggs']) self.assertEqual(spec.name, self.name) self.assertEqual(spec.loader, self.fileloader) self.assertEqual(spec.origin, self.path) self.assertIs(spec.loader_state, None) self.assertEqual(spec.submodule_search_locations, ['eggs']) self.assertEqual(spec.cached, self.cached) self.assertTrue(spec.has_location) def test_spec_from_file_location_smsl_default(self): spec = self.util.spec_from_file_location(self.name, self.path, loader=self.pkgloader) self.assertEqual(spec.name, self.name) self.assertEqual(spec.loader, self.pkgloader) self.assertEqual(spec.origin, self.path) self.assertIs(spec.loader_state, None) self.assertEqual(spec.submodule_search_locations, ['']) self.assertEqual(spec.cached, self.cached) self.assertTrue(spec.has_location) def test_spec_from_file_location_smsl_default_not_package(self): class Loader: def is_package(self, name): return False loader = Loader() spec = self.util.spec_from_file_location(self.name, self.path, loader=loader) self.assertEqual(spec.name, self.name) self.assertEqual(spec.loader, loader) self.assertEqual(spec.origin, self.path) self.assertIs(spec.loader_state, None) self.assertIs(spec.submodule_search_locations, None) self.assertEqual(spec.cached, self.cached) self.assertTrue(spec.has_location) def test_spec_from_file_location_smsl_default_no_is_package(self): spec = self.util.spec_from_file_location(self.name, self.path, loader=self.fileloader) self.assertEqual(spec.name, self.name) self.assertEqual(spec.loader, self.fileloader) self.assertEqual(spec.origin, self.path) self.assertIs(spec.loader_state, None) self.assertIs(spec.submodule_search_locations, None) self.assertEqual(spec.cached, self.cached) self.assertTrue(spec.has_location) def test_spec_from_file_location_smsl_default_bad_is_package(self): class Loader: def is_package(self, name): raise ImportError loader = Loader() spec = self.util.spec_from_file_location(self.name, self.path, loader=loader) self.assertEqual(spec.name, self.name) self.assertEqual(spec.loader, loader) self.assertEqual(spec.origin, self.path) self.assertIs(spec.loader_state, None) self.assertIs(spec.submodule_search_locations, None) self.assertEqual(spec.cached, self.cached) self.assertTrue(spec.has_location) (Frozen_FactoryTests, Source_FactoryTests ) = test_util.test_both(FactoryTests, util=util, machinery=machinery) if __name__ == '__main__': unittest.main()