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from .. import abc
from .. import util
machinery = util.import_importlib('importlib.machinery')
import _imp
import marshal
import os.path
import unittest
import warnings
from test.support import import_helper, REPO_ROOT, STDLIB_DIR
def resolve_stdlib_file(name, ispkg=False):
assert name
if ispkg:
return os.path.join(STDLIB_DIR, *name.split('.'), '__init__.py')
else:
return os.path.join(STDLIB_DIR, *name.split('.')) + '.py'
class FindSpecTests(abc.FinderTests):
"""Test finding frozen modules."""
def find(self, name, **kwargs):
finder = self.machinery.FrozenImporter
with import_helper.frozen_modules():
return finder.find_spec(name, **kwargs)
def check_basic(self, spec, name, ispkg=False):
self.assertEqual(spec.name, name)
self.assertIs(spec.loader, self.machinery.FrozenImporter)
self.assertEqual(spec.origin, 'frozen')
self.assertFalse(spec.has_location)
if ispkg:
self.assertIsNotNone(spec.submodule_search_locations)
else:
self.assertIsNone(spec.submodule_search_locations)
self.assertIsNotNone(spec.loader_state)
def check_loader_state(self, spec, origname=None, filename=None):
if not filename:
if not origname:
origname = spec.name
actual = dict(vars(spec.loader_state))
# Check the code object used to import the frozen module.
# We can't compare the marshaled data directly because
# marshal.dumps() would mark "expected" (below) as a ref,
# which slightly changes the output.
# (See https://bugs.python.org/issue34093.)
data = actual.pop('data')
with import_helper.frozen_modules():
expected = _imp.get_frozen_object(spec.name)
code = marshal.loads(data)
self.assertEqual(code, expected)
# Check the rest of spec.loader_state.
expected = dict(
origname=origname,
)
self.assertDictEqual(actual, expected)
def check_search_locations(self, spec):
# Frozen packages do not have any path entries.
# (See https://bugs.python.org/issue21736.)
expected = []
self.assertListEqual(spec.submodule_search_locations, expected)
def test_module(self):
modules = [
'__hello__',
'__phello__.spam',
'__phello__.ham.eggs',
]
for name in modules:
with self.subTest(f'{name} -> {name}'):
spec = self.find(name)
self.check_basic(spec, name)
self.check_loader_state(spec)
modules = {
'__hello_alias__': '__hello__',
'_frozen_importlib': 'importlib._bootstrap',
}
for name, origname in modules.items():
with self.subTest(f'{name} -> {origname}'):
spec = self.find(name)
self.check_basic(spec, name)
self.check_loader_state(spec, origname)
modules = [
'__phello__.__init__',
'__phello__.ham.__init__',
]
for name in modules:
origname = '<' + name.rpartition('.')[0]
filename = resolve_stdlib_file(name)
with self.subTest(f'{name} -> {origname}'):
spec = self.find(name)
self.check_basic(spec, name)
self.check_loader_state(spec, origname, filename)
modules = {
'__hello_only__': ('Tools', 'freeze', 'flag.py'),
}
for name, path in modules.items():
origname = None
filename = os.path.join(REPO_ROOT, *path)
with self.subTest(f'{name} -> {filename}'):
spec = self.find(name)
self.check_basic(spec, name)
self.check_loader_state(spec, origname, filename)
def test_package(self):
packages = [
'__phello__',
'__phello__.ham',
]
for name in packages:
filename = resolve_stdlib_file(name, ispkg=True)
with self.subTest(f'{name} -> {name}'):
spec = self.find(name)
self.check_basic(spec, name, ispkg=True)
self.check_loader_state(spec, name, filename)
self.check_search_locations(spec)
packages = {
'__phello_alias__': '__hello__',
}
for name, origname in packages.items():
filename = resolve_stdlib_file(origname, ispkg=False)
with self.subTest(f'{name} -> {origname}'):
spec = self.find(name)
self.check_basic(spec, name, ispkg=True)
self.check_loader_state(spec, origname, filename)
self.check_search_locations(spec)
# These are covered by test_module() and test_package().
test_module_in_package = None
test_package_in_package = None
# No easy way to test.
test_package_over_module = None
def test_path_ignored(self):
for name in ('__hello__', '__phello__', '__phello__.spam'):
actual = self.find(name)
for path in (None, object(), '', 'eggs', [], [''], ['eggs']):
with self.subTest((name, path)):
spec = self.find(name, path=path)
self.assertEqual(spec, actual)
def test_target_ignored(self):
imported = ('__hello__', '__phello__')
with import_helper.CleanImport(*imported, usefrozen=True):
import __hello__ as match
import __phello__ as nonmatch
name = '__hello__'
actual = self.find(name)
for target in (None, match, nonmatch, object(), 'not-a-module-object'):
with self.subTest(target):
spec = self.find(name, target=target)
self.assertEqual(spec, actual)
def test_failure(self):
spec = self.find('<not real>')
self.assertIsNone(spec)
def test_not_using_frozen(self):
finder = self.machinery.FrozenImporter
with import_helper.frozen_modules(enabled=False):
# both frozen and not frozen
spec1 = finder.find_spec('__hello__')
# only frozen
spec2 = finder.find_spec('__hello_only__')
self.assertIsNone(spec1)
self.assertIsNone(spec2)
(Frozen_FindSpecTests,
Source_FindSpecTests
) = util.test_both(FindSpecTests, machinery=machinery)
class FinderTests(abc.FinderTests):
"""Test finding frozen modules."""
def find(self, name, path=None):
finder = self.machinery.FrozenImporter
with warnings.catch_warnings():
warnings.simplefilter("ignore", DeprecationWarning)
with import_helper.frozen_modules():
return finder.find_module(name, path)
def test_module(self):
name = '__hello__'
loader = self.find(name)
self.assertTrue(hasattr(loader, 'load_module'))
def test_package(self):
loader = self.find('__phello__')
self.assertTrue(hasattr(loader, 'load_module'))
def test_module_in_package(self):
loader = self.find('__phello__.spam', ['__phello__'])
self.assertTrue(hasattr(loader, 'load_module'))
# No frozen package within another package to test with.
test_package_in_package = None
# No easy way to test.
test_package_over_module = None
def test_failure(self):
loader = self.find('<not real>')
self.assertIsNone(loader)
(Frozen_FinderTests,
Source_FinderTests
) = util.test_both(FinderTests, machinery=machinery)
if __name__ == '__main__':
unittest.main()
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