diff --git a/dejagnu/gdb_dejagnu.py b/dejagnu/gdb_dejagnu.py
index a7897dc..44b3c09 100755
--- a/dejagnu/gdb_dejagnu.py
+++ b/dejagnu/gdb_dejagnu.py
@@ -340,7 +340,8 @@
     executer.PrepareGdbserver()
     executer.MakeCheck()
     print executer.ResultValidate()
-   # ret = executer.ValidateFailures()
+    ret = executer.ResultValidate()
+
   except Exception as e:
     # At least log the exception on console.
     print e
diff --git a/test_gdb_dejagnu.py b/test_gdb_dejagnu.py
new file mode 100755
index 0000000..09af81f
--- /dev/null
+++ b/test_gdb_dejagnu.py
@@ -0,0 +1,146 @@
+#!/usr/bin/python
+
+import optparse
+import sys
+import setup_chromeos
+
+from dejagnu import gdb_dejagnu
+from utils import command_executer
+from utils import email_sender
+
+
+class DejagnuAdapter(object):
+
+  def __init__(self, board, remote, gdb_dir,
+               chromeos_root, cleanup):
+    self._board = board
+    self._remote = remote
+    self._gdb_dir = gdb_dir
+    self._chromeos_root = chromeos_root
+    self._cleanup = cleanup
+    self._cmd_exec = command_executer.GetCommandExecuter()
+
+  def SetupChromeOS(self):
+    cmd = [setup_chromeos.__file__,
+           '--dir=' + self._chromeos_root, '--minilayout', '--jobs=8']
+    ret = setup_chromeos.Main(cmd)
+    if ret:
+      raise Exception('Failed to checkout chromeos')
+    ## Do cros_sdk and setup_board, otherwise build_tc in next step will fail.
+    cmd = 'cd {0} && cros_sdk --download'.format(self._chromeos_root)
+    ret = self._cmd_exec.RunCommand(cmd, terminated_timeout=9000)
+    if ret:
+      raise Exception('Failed to create chroot.')
+
+  def SetupBoard(self):
+    cmd = './setup_board --board=' + self._board
+    ret = self._cmd_exec.ChrootRunCommand(self._chromeos_root,
+                                          cmd, terminated_timeout=4000)
+    if ret:
+      raise Exception('Failed to setup board.')
+
+  def CheckGDB(self):
+    args = [gdb_dejagnu.__file__,
+            '--board=' + self._board,
+            '--chromeos_root=' + self._chromeos_root,
+            '--mount=' + self._gdb_dir,
+            '--remote=' + self._remote]
+    if self._cleanup:
+      args.append('--cleanup=' + self._cleanup)
+    return gdb_dejagnu.Main(args)
+
+
+# Parse the output log to determine how many failures we have.
+# Return -1 if parse output log failed.
+def GetNumNewFailures(string):
+  if not string:
+    return 0
+  return len(string.splitlines())
+
+
+# Do not throw any exception in this function!
+def EmailResult(result):
+  email_to = ['yunlian@google.com']
+  if len(result) == 4:
+    subject = 'Job failed: dejagnu test didn\'t finish'
+    email_text = ('Job failed prematurely, check exception below.\n' +
+                  result[3])
+  elif result[0]:
+    subject = 'Job finished: dejagnu test failed'
+    num_new_failures = GetNumNewFailures(result[1])
+    if num_new_failures >= 0:
+      summary = '{0} new fail(s), check log below.'.format(num_new_failures)
+    else:
+      summary = 'At least 1 new fail found, check log below.'
+    email_text = (summary +
+                  ('\nStdout ====\n'
+                   '{0}\n'
+                   '\nStderr ===\n'
+                   '{1}\n').format(result[1], result[2]))
+  else:
+    subject = 'Job finished: dejagnu test passed'
+    email_text = ('Cool! No new fail found.\n'
+                  '\nStdout ====\n'
+                  '{0}\n'
+                  '\nStderr ====\n'
+                  '{1}\n').format(result[1], result[2])
+
+  try:
+    email_sender.EmailSender().SendEmail(email_to, subject, email_text)
+    print 'Email sent.'
+  except Exception as e:
+    # Do not propagate this email sending exception, you want to email an
+    # email exception? Just log it on console.
+    print ('Sending email failed - {0}'
+           'Subject: {1}'
+           'Text: {2}').format(
+               str(e), subject, email_text)
+
+
+def ProcessArguments(argv):
+  """Processing script arguments."""
+  parser = optparse.OptionParser(description=(
+      'This script is used by nightly client to test gdb. '
+      'DO NOT run it unless you know what you are doing.'),
+                                 usage='test_gdb_dejagnu.py options')
+  parser.add_option('-b', '--board', dest='board',
+                    help=('Required. Specify board type. For example '
+                          '\'lumpy\' and \'daisy\''))
+  parser.add_option('-r', '--remote', dest='remote',
+                    help=('Required. Specify remote board address'))
+  parser.add_option('-g', '--gdb_dir', dest='gdb_dir', default='',
+                    help=('Optional. Specify gdb checkout directory.'))
+  parser.add_option('-c', '--chromeos_root', dest='chromeos_root',
+                    default='chromeos.live',
+                    help=('Optional. Specify chromeos checkout directory.'))
+  parser.add_option('--cleanup', dest='cleanup', default=None,
+                    help=('Optional. Do cleanup after the test.'))
+
+  options, _ = parser.parse_args(argv)
+
+  if not options.board or not options.remote:
+    raise Exception('--board and --remote are mandatory options.')
+
+  return options
+
+
+def Main(argv):
+  opt = ProcessArguments(argv)
+  print opt
+  adapter = DejagnuAdapter(
+      opt.board, opt.remote, opt.gdb_dir, opt.chromeos_root,
+      opt.cleanup)
+  try:
+    adapter.SetupChromeOS()
+    adapter.SetupBoard()
+    ret = adapter.CheckGDB()
+  except Exception as e:
+    print e
+    ret = (1, '', '', str(e))
+  finally:
+    EmailResult(ret)
+    return ret
+
+if  __name__ == '__main__':
+  retval = Main(sys.argv)
+  sys.exit(retval[0])