code: def test_flush_timer_is_long_so_data_is_not_there(self):
      with self.assertRaises(BaseException):
          N_TEST = 5
          w = SummaryWriter(flush_secs=20)
          f = w.file_writer.event_writer._ev_writer._file_name
          for i in range(N_TEST):
              w.add_scalar("a", i)
              time.sleep(2)
          r = PyRecordReader_New(f)
          r.GetNext()  # meta data, so skip
          for _ in range(N_TEST):  # missing data
              r.GetNext()
  
file_path: tensorboardX/tests/test_writer.py
imports: from tensorboardX import SummaryWriter
  from tensorboard.compat.tensorflow_stub.pywrap_tensorflow import PyRecordReader_New
  from tensorboardX.proto import event_pb2
  import os
  import numpy
  import pytest
  import unittest
  import time
label_desc: Use image node_id 2 for calling the WriterTest obj's underlying member method code with example usage: obj.test_flush_timer_is_long_so_data_is_not_there() without return types