code: def testDebugDumpDir_nonexistentDumpRoot(self):
      with self.assertRaisesRegex(IOError, "does not exist"):
          debug_data.DebugDumpDir(tempfile.mkdtemp() + "_foo")
  
imports: import os
  import platform
  import tempfile
  import numpy
  from tensorflow.core.framework import graph_pb2
  from tensorflow.core.framework import tensor_pb2
  from tensorflow.python.debug.lib import debug_data
  from tensorflow.python.framework import test_util
  from tensorflow.python.lib.io import file_io
  from tensorflow.python.platform import gfile
  from tensorflow.python.platform import googletest
  from tensorflow.python.platform import test
label_desc: Use image node_id 4 for calling the DebugDumpDirTest obj's underlying member method code with example usage: obj.testDebugDumpDir_nonexistentDumpRoot() without return types