test_filefinder2_importlib_import.py 文件源码

def test_importlib_import_class_from_relative_ns_subpkg(self):
            """Verify that message class is importable relatively"""
            print_importers()
            assert __package__

            # __import__ checks sys.modules by itself
            # but the test is not reflecting anything if we use the already loaded module.
            if sys.modules.get(__package__ + '.nspkg.subpkg'):
                raise unittest.SkipTest("module previously loaded".format(__package__ + '.nspkg.subpkg'))
            else:
                nspkg = importlib.__import__('nspkg.subpkg', globals=globals(),
                                             level=1)  # need globals to handle relative imports
                test_class_in_subpkg = nspkg.subpkg.TestClassInSubPkg

                self.assertTrue(test_class_in_subpkg is not None)
                self.assertTrue(callable(test_class_in_subpkg))

                # TODO : implement some differences and check we get them...
                if hasattr(importlib, 'reload'):  # recent version of importlib
                    # attempting to reload
                    importlib.reload(nspkg)
                else:
                    pass