code: def testAddRunsFromDirectoryThrowsException(self):
      x = event_multiplexer.EventMultiplexer()
      tmpdir = self.get_temp_dir()
  
      filepath = _AddEvents(tmpdir)
      with self.assertRaises(ValueError):
          x.AddRunsFromDirectory(filepath)
  
imports: import os
  import os.path
  import queue
  import shutil
  import tensorflow
  from tensorboard.backend.event_processing import plugin_event_accumulator
  from tensorboard.backend.event_processing import plugin_event_multiplexer
  from tensorboard.util import test_util
label_desc: Use image node_id 15 for calling the EventMultiplexerTest obj's underlying member method code with example usage: obj.testAddRunsFromDirectoryThrowsException() without return types