code: def testParseMegaBytesWorks(self):
      self.assertEqual(0, command_parser.parse_readable_size_str("0MB"))
      self.assertEqual(
          1024**3, command_parser.parse_readable_size_str("1024 MB")
      )
      self.assertEqual(
          1024**3 * 2, command_parser.parse_readable_size_str("2048M")
      )
      self.assertEqual(
          1024**3 * 2,
          command_parser.parse_readable_size_str("2048MB"),
      )
      self.assertEqual(
          1024**2 / 4, command_parser.parse_readable_size_str("0.25M")
      )
  
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 3 for calling the ParseReadableSizeStrTest obj's underlying member method code with example usage: obj.testParseMegaBytesWorks() without return types