Add RunUnitTests() and RunUnitTestsInDirectory() canned checks.

presubmit_support.py

 #!/usr/bin/python
 # Copyright (c) 2010 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.
 
 """Enables directory-specific presubmit checks to run at upload and/or commit.
 """
 
-__version__ = '1.4'
+__version__ = '1.5'
 
 # TODO(joi) Add caching where appropriate/needed. The API is designed to allow
 # caching (between all different invocations of presubmit scripts for a given
 # change). We should add it as our presubmit scripts start feeling slow.
 
 import cPickle  # Exposed through the API.
 import cStringIO  # Exposed through the API.
 import exceptions
 import fnmatch
 import glob
@@ skipping 224 matching lines @@
     self.is_committing = is_committing
     self.tbr = tbr
     self.host_url = host_url or 'http://codereview.chromium.org'
 
     # We expose various modules and functions as attributes of the input_api
     # so that presubmit scripts don't have to import them.
     self.basename = os.path.basename
     self.cPickle = cPickle
     self.cStringIO = cStringIO
     self.json = json
+    self.os_listdir = os.listdir
+    self.os_walk = os.walk
     self.os_path = os.path
     self.pickle = pickle
     self.marshal = marshal
     self.re = re
     self.subprocess = subprocess
     self.tempfile = tempfile
     self.time = time
     self.traceback = traceback
     self.unittest = unittest
     self.urllib2 = urllib2
@@ skipping 931 matching lines @@
                               sys.stdout,
                               sys.stdin,
                               options.default_presubmit,
                               options.may_prompt)
   return not results.should_continue()
 
 
 if __name__ == '__main__':
   fix_encoding.fix_encoding()
   sys.exit(Main(None))