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from importlib import machinery
from . import util as ext_util
from .. import abc
from .. import util
import sys
import unittest
class LoaderTests(abc.LoaderTests):
"""Test load_module() for extension modules."""
def setUp(self):
self.loader = machinery.ExtensionFileLoader(ext_util.NAME,
ext_util.FILEPATH)
def load_module(self, fullname):
return self.loader.load_module(fullname)
def test_load_module_API(self):
# Test the default argument for load_module().
self.loader.load_module()
self.loader.load_module(None)
with self.assertRaises(ImportError):
self.load_module('XXX')
def test_module(self):
with util.uncache(ext_util.NAME):
module = self.load_module(ext_util.NAME)
for attr, value in [('__name__', ext_util.NAME),
('__file__', ext_util.FILEPATH),
('__package__', '')]:
self.assertEqual(getattr(module, attr), value)
self.assertTrue(ext_util.NAME in sys.modules)
self.assertTrue(isinstance(module.__loader__,
machinery.ExtensionFileLoader))
def test_package(self):
# Extensions are not found in packages.
pass
def test_lacking_parent(self):
# Extensions are not found in packages.
pass
def test_module_reuse(self):
with util.uncache(ext_util.NAME):
module1 = self.load_module(ext_util.NAME)
module2 = self.load_module(ext_util.NAME)
self.assertTrue(module1 is module2)
def test_state_after_failure(self):
# No easy way to trigger a failure after a successful import.
pass
def test_unloadable(self):
name = 'asdfjkl;'
with self.assertRaises(ImportError) as cm:
self.load_module(name)
self.assertEqual(cm.exception.name, name)
def test_main():
from test.support import run_unittest
run_unittest(LoaderTests)
if __name__ == '__main__':
test_main()
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