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from test.test_importlib import abc, util
machinery = util.import_importlib('importlib.machinery')
from test.support import captured_stdout, import_helper, STDLIB_DIR
import contextlib
import os.path
import types
import unittest
import warnings
@contextlib.contextmanager
def deprecated():
with warnings.catch_warnings():
warnings.simplefilter('ignore', DeprecationWarning)
yield
@contextlib.contextmanager
def fresh(name, *, oldapi=False):
with util.uncache(name):
with import_helper.frozen_modules():
if oldapi:
with deprecated():
yield
else:
yield
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 ExecModuleTests(abc.LoaderTests):
def exec_module(self, name, origname=None):
with import_helper.frozen_modules():
is_package = self.machinery.FrozenImporter.is_package(name)
spec = self.machinery.ModuleSpec(
name,
self.machinery.FrozenImporter,
origin='frozen',
is_package=is_package,
loader_state=types.SimpleNamespace(
origname=origname or name,
filename=resolve_stdlib_file(origname or name, is_package),
),
)
module = types.ModuleType(name)
module.__spec__ = spec
assert not hasattr(module, 'initialized')
with fresh(name):
self.machinery.FrozenImporter.exec_module(module)
with captured_stdout() as stdout:
module.main()
self.assertTrue(module.initialized)
self.assertHasAttr(module, '__spec__')
self.assertEqual(module.__spec__.origin, 'frozen')
return module, stdout.getvalue()
def test_module(self):
name = '__hello__'
module, output = self.exec_module(name)
check = {'__name__': name}
for attr, value in check.items():
self.assertEqual(getattr(module, attr), value)
self.assertEqual(output, 'Hello world!\n')
self.assertHasAttr(module, '__spec__')
self.assertEqual(module.__spec__.loader_state.origname, name)
def test_package(self):
name = '__phello__'
module, output = self.exec_module(name)
check = {'__name__': name}
for attr, value in check.items():
attr_value = getattr(module, attr)
self.assertEqual(attr_value, value,
'for {name}.{attr}, {given!r} != {expected!r}'.format(
name=name, attr=attr, given=attr_value,
expected=value))
self.assertEqual(output, 'Hello world!\n')
self.assertEqual(module.__spec__.loader_state.origname, name)
def test_lacking_parent(self):
name = '__phello__.spam'
with util.uncache('__phello__'):
module, output = self.exec_module(name)
check = {'__name__': name}
for attr, value in check.items():
attr_value = getattr(module, attr)
self.assertEqual(attr_value, value,
'for {name}.{attr}, {given} != {expected!r}'.format(
name=name, attr=attr, given=attr_value,
expected=value))
self.assertEqual(output, 'Hello world!\n')
def test_module_repr_indirect_through_spec(self):
name = '__hello__'
module, output = self.exec_module(name)
self.assertEqual(repr(module),
"<module '__hello__' (frozen)>")
# No way to trigger an error in a frozen module.
test_state_after_failure = None
def test_unloadable(self):
with import_helper.frozen_modules():
assert self.machinery.FrozenImporter.find_spec('_not_real') is None
with self.assertRaises(ImportError) as cm:
self.exec_module('_not_real')
self.assertEqual(cm.exception.name, '_not_real')
(Frozen_ExecModuleTests,
Source_ExecModuleTests
) = util.test_both(ExecModuleTests, machinery=machinery)
class InspectLoaderTests:
"""Tests for the InspectLoader methods for FrozenImporter."""
def test_get_code(self):
# Make sure that the code object is good.
name = '__hello__'
with import_helper.frozen_modules():
code = self.machinery.FrozenImporter.get_code(name)
mod = types.ModuleType(name)
exec(code, mod.__dict__)
with captured_stdout() as stdout:
mod.main()
self.assertHasAttr(mod, 'initialized')
self.assertEqual(stdout.getvalue(), 'Hello world!\n')
def test_get_source(self):
# Should always return None.
with import_helper.frozen_modules():
result = self.machinery.FrozenImporter.get_source('__hello__')
self.assertIsNone(result)
def test_is_package(self):
# Should be able to tell what is a package.
test_for = (('__hello__', False), ('__phello__', True),
('__phello__.spam', False))
for name, is_package in test_for:
with import_helper.frozen_modules():
result = self.machinery.FrozenImporter.is_package(name)
self.assertEqual(bool(result), is_package)
def test_failure(self):
# Raise ImportError for modules that are not frozen.
for meth_name in ('get_code', 'get_source', 'is_package'):
method = getattr(self.machinery.FrozenImporter, meth_name)
with self.assertRaises(ImportError) as cm:
with import_helper.frozen_modules():
method('importlib')
self.assertEqual(cm.exception.name, 'importlib')
(Frozen_ILTests,
Source_ILTests
) = util.test_both(InspectLoaderTests, machinery=machinery)
if __name__ == '__main__':
unittest.main()
|
