code: def testRaisesWithBadArguments(self):
      with self.assertRaises(ValueError):
          directory_watcher.DirectoryWatcher(None, lambda x: None)
      with self.assertRaises(ValueError):
          directory_watcher.DirectoryWatcher("dir", None)
  
imports: import os
  import shutil
  import tensorflow
  from tensorboard.backend.event_processing import directory_watcher
  from tensorboard.backend.event_processing import io_wrapper
label_desc: Use image node_id 6 for calling the DirectoryWatcherTest obj's underlying member method code with example usage: obj.testRaisesWithBadArguments() without return types