test_os.py 文件源码

def test_trailers(self):
            TESTFN2 = support.TESTFN + "2"
            file_data = b"abcdef"
            with open(TESTFN2, 'wb') as f:
                f.write(file_data)
            with open(TESTFN2, 'rb')as f:
                self.addCleanup(os.remove, TESTFN2)
                os.sendfile(self.sockno, f.fileno(), 0, len(file_data),
                            trailers=[b"1234"])
                self.client.close()
                self.server.wait()
                data = self.server.handler_instance.get_data()
                self.assertEqual(data, b"abcdef1234")