Defaults stdin to VOID for capture and check_output()

tests/subprocess2_test.py

 #!/usr/bin/env python
 # Copyright (c) 2011 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 """Unit tests for subprocess2.py."""
 
 import optparse
 import os
 import sys
@@ skipping 107 matching lines @@
     self.assertEquals(expected, results)
 
   def test_check_output_defaults(self):
     results = self._fake_call()
     # It's discarding 'stderr' because it assumes stderr=subprocess2.STDOUT but
     # fake_call() doesn't 'implement' that.
     self.assertEquals('stdout', subprocess2.check_output(['foo'], a=True))
     expected = {
         'args': ['foo'],
         'a':True,
+        'stdin': subprocess2.VOID,
         'stdout': subprocess2.PIPE,
         'stderr': subprocess2.STDOUT,
     }
     self.assertEquals(expected, results)
 
   def test_timeout(self):
     # It'd be better to not discard stdout.
     out, returncode = subprocess2.call(
         self.exe + ['--sleep', '--stdout'],
         timeout=0.01,
@@ skipping 58 matching lines @@
   do('CCC')
   if options.sleep:
     time.sleep(10)
   return options.return_value
 
 
 if __name__ == '__main__':
   if len(sys.argv) > 1 and sys.argv[1] == '--child':
     sys.exit(child_main(sys.argv[2:]))
   unittest.main()