class_docstr: Test for the UploadTracker class.
class_docstr_tok: ["Test","for","the","UploadTracker","class","."]
code: def tearDown(self):
      self.mock_stdout_write.stop()
      self.mock_stdout_flush.stop()
      super().tearDown()
  
imports: import sys
  from unittest import mock
  from tensorboard import test
  from tensorboard.uploader import upload_tracker
label_desc: Use image node_id 2 for calling the UploadTrackerTest obj's underlying member method code with example usage: obj.tearDown() without return types