test_file_loader.py 文件源码

def test_timestamp_overflow(self):
        # When a modification timestamp is larger than 2**32, it should be
        # truncated rather than raise an OverflowError.
        with source_util.create_modules('_temp') as mapping:
            source = mapping['_temp']
            compiled = imp.cache_from_source(source)
            with open(source, 'w') as f:
                f.write("x = 5")
            try:
                os.utime(source, (2 ** 33 - 5, 2 ** 33 - 5))
            except OverflowError:
                self.skipTest("cannot set modification time to large integer")
            except OSError as e:
                if e.errno != getattr(errno, 'EOVERFLOW', None):
                    raise
                self.skipTest("cannot set modification time to large integer ({})".format(e))
            loader = _bootstrap._SourceFileLoader('_temp', mapping['_temp'])
            mod = loader.load_module('_temp')
            # Sanity checks.
            self.assertEqual(mod.__cached__, compiled)
            self.assertEqual(mod.x, 5)
            # The pyc file was created.
            os.stat(compiled)