code: def test_summarywriter_text(self):
      log_dir = tempfile.mkdtemp()
      summary_writer = SummaryWriter(log_dir=log_dir)
      text = "hello world."
      summary_writer.text(tag="text_test", textdata=text, step=1)
  
      summary_value = self.parse_and_return_summary_value(path=log_dir)
      self.assertEqual(summary_value.tag, "text_test")
      self.assertEqual(
          tensor_util.make_ndarray(summary_value.tensor)
          .item()
          .decode("utf-8"),
          text,
      )
  
imports: import itertools
  import pathlib
  import tempfile
  import numpy
  import tensorflow
  from absl.testing import absltest
  from tensorboard.backend.event_processing import directory_watcher, event_file_loader
  from tensorboard.util import tensor_util
  from flax.metrics.tensorboard import SummaryWriter, _flatten_dict
label_desc: Use image node_id 4 for calling the TensorboardTest obj's underlying member method code with example usage: obj.test_summarywriter_text() without return types