test_file_loader.py 文件源码

def test_state_after_failure(self):
        # A failed reload should leave the original module intact.
        attributes = ('__file__', '__path__', '__package__')
        value = '<test>'
        name = '_temp'
        with source_util.create_modules(name) as mapping:
            orig_module = imp.new_module(name)
            for attr in attributes:
                setattr(orig_module, attr, value)
            with open(mapping[name], 'w') as file:
                file.write('+++ bad syntax +++')
            loader = machinery.SourceFileLoader('_temp', mapping['_temp'])
            with self.assertRaises(SyntaxError):
                loader.load_module(name)
            for attr in attributes:
                self.assertEqual(getattr(orig_module, attr), value)

    # [syntax error]