Add option to command tester for running a test multiple times. Use that

tools/test_lib.py

 #!/usr/bin/python
 # Copyright (c) 2011 The Native Client Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 """Testing Library For Nacl.
 
 """
 
 import difflib
@@ skipping 84 matching lines @@
   def __init__(self):
     self._start_time = self._GetTime(None)
 
 
   def ElapsedCpuTime(self, proc_handle):
     return self._GetTime(proc_handle) - self._start_time
 
 def PopenBufSize():
   return 1000 * 1000
 
-def RunCmdWithInput(cmd, input_data):
-  try:
-    sys.stdout.flush() # Make sure stdout stays in sync on the bots.
-    p = subprocess.Popen(cmd,
-                         bufsize=PopenBufSize(),
-                         stdin=subprocess.PIPE)
-    p.communicate(input_data)
-    retcode = p.wait()
-    if retcode != 0:
-      print ('Failed to cmd %s (retcode=%d)' %
-             (cmd, retcode))
-      return False
-  except OSError:
-    print 'RunCmdWithInput exception: ' + str(sys.exc_info()[1])
-    return False
-  return True
-
 def RunTestWithInput(cmd, input_data):
   """Run a test where we only care about the return code."""
   assert type(cmd) == list
   failed = 0
   timer = SubprocessCpuTimer()
   p = None
   try:
     sys.stdout.flush() # Make sure stdout stays in sync on the bots.
     if type(input_data) == str:
       p = subprocess.Popen(cmd,
@@ skipping 146 matching lines @@
     if group_only:
       matched_strings = []
       for s in mobj.groups():
         if s is not None:
           matched_strings.append(s)
       result.append(''.join(matched_strings))
     else:
       result.append(line)
 
   return '\n'.join(result)