code: def testParseUnsupportedUnitRaisesException(self):
      with self.assertRaisesRegex(ValueError, r".*float.*2us.*"):
          command_parser.parse_readable_time_str("2uss")
  
      with self.assertRaisesRegex(ValueError, r".*float.*2m.*"):
          command_parser.parse_readable_time_str("2m")
  
      with self.assertRaisesRegex(
          ValueError, r"Invalid time -1. Time value must be positive."
      ):
          command_parser.parse_readable_time_str("-1s")
  
imports: import sys
  from tensorflow.python.debug.cli import command_parser
  from tensorflow.python.framework import test_util
  from tensorflow.python.platform import googletest
label_desc: Use image node_id 5 for calling the ParseReadableTimeStrTest obj's underlying member method code with example usage: obj.testParseUnsupportedUnitRaisesException() without return types