class_docstr: Test for DebugDataReader for multiple file sets under a dump root.
class_docstr_tok: ["Test","for","DebugDataReader","for","multiple","file","sets","under","a","dump","root","."]
code: def testReadingTwoFileSetsWithTheDifferentRootsLeadsToError(self):
      # To simulate a multi-host data dump, we first generate file sets in two
      # different directories, with different tfdbg_run_ids, and then combine
      # them.
      for i in range(2):
          writer = debug_events_writer.DebugEventsWriter(
              os.path.join(self.dump_root, str(i)),
              "run_id_%d" % i,
              circular_buffer_size=-1,
          )
          writer.FlushNonExecutionFiles()
          writer.FlushExecutionFiles()
  
      # Move all files from the subdirectory /1 to subdirectory /0.
      dump_root_0 = os.path.join(self.dump_root, "0")
      src_paths = glob.glob(os.path.join(self.dump_root, "1", "*"))
      for src_path in src_paths:
          dst_path = os.path.join(
              dump_root_0,
              # Rename the file set to avoid file name collision.
              re.sub(
                  r"(tfdbg_events\.\d+)",
                  r"\g<1>1",
                  os.path.basename(src_path),
              ),
          )
          os.rename(src_path, dst_path)
  
      with self.assertRaisesRegex(
          ValueError, r"Found multiple \(2\) tfdbg2 runs"
      ):
          debug_events_reader.DebugDataReader(dump_root_0)
  
imports: import glob
  import json
  import os
  import re
  import threading
  import time
  from absl.testing import parameterized
  from tensorflow.core.protobuf import debug_event_pb2
  from tensorflow.python.debug.lib import debug_events_reader
  from tensorflow.python.debug.lib import debug_events_writer
  from tensorflow.python.debug.lib import dumping_callback_test_lib
  from tensorflow.python.framework import ops
  from tensorflow.python.framework import test_util
  from tensorflow.python.framework import versions
  from tensorflow.python.platform import googletest
label_desc: Use image node_id 2 for calling the MultiSetReaderTest obj's underlying member method code with example usage: obj.testReadingTwoFileSetsWithTheDifferentRootsLeadsToError() without return types