MD WebUI: run vulcanize tests on PRESUBMIT

chrome/browser/resources/PRESUBMIT.py

 # Copyright 2014 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.
 
 """Presubmit script for files in chrome/browser/resources.
 
 See http://dev.chromium.org/developers/how-tos/depottools/presubmit-scripts
 for more details about the presubmit API built into depot_tools.
 """
 
@@ skipping 73 matching lines @@
 
   html_element_re = r'<(.*?)(^|\s+)metric\s*=\s*"%s"(.*?)>' % (metric_name)
   type_re = (r'datatype\s*=\s*"boolean"|type\s*=\s*"checkbox"|'
       'type\s*=\s*"radio".*?value\s*=\s*("true"|"false")')
 
   match = input_api.re.search(html_element_re, new_content, input_api.re.DOTALL)
   return (match and
       any(input_api.re.search(type_re, match.group(i)) for i in (1, 3)))
 
 
+def RunVulcanizeTests(input_api, output_api):
+  presubmit_path = input_api.PresubmitLocalPath()
+  tests = [input_api.os_path.join(presubmit_path, 'vulcanize_gn_test.py')]
+  return input_api.canned_checks.RunUnitTests(input_api, output_api, tests)
+
+
+def _CheckChangeOnUploadOrCommit(input_api, output_api):
+  results = CheckUserActionUpdate(input_api, output_api, ACTION_XML_PATH)
+  affected = input_api.AffectedFiles()
+  if any(f for f in affected if f.LocalPath().endswith('vulcanize_gn.py')):
+    results += RunVulcanizeTests(input_api, output_api)
+  return results
+
+
 def CheckChangeOnUpload(input_api, output_api):
-  return CheckUserActionUpdate(input_api, output_api, ACTION_XML_PATH)
+  return _CheckChangeOnUploadOrCommit(input_api, output_api)
 
 
 def CheckChangeOnCommit(input_api, output_api):
-  return CheckUserActionUpdate(input_api, output_api, ACTION_XML_PATH)
+  return _CheckChangeOnUploadOrCommit(input_api, output_api)
 
 
 def PostUploadHook(cl, change, output_api):
   rietveld_obj = cl.RpcServer()
   description = rietveld_obj.get_description(cl.issue)
 
   existing_bots = (change.CQ_INCLUDE_TRYBOTS or '').split(';')
   clean_bots = set(filter(None, map(lambda s: s.strip(), existing_bots)))
   new_bots = clean_bots | set(
       ['master.tryserver.chromium.linux:closure_compilation'])
   new_tag = 'CQ_INCLUDE_TRYBOTS=%s' % ';'.join(new_bots)
 
   if clean_bots:
     tag_reg = '^CQ_INCLUDE_TRYBOTS=.*$'
     new_description = re.sub(tag_reg, new_tag, description, flags=re.M | re.I)
   else:
     new_description = description + '\n' + new_tag
 
   if new_description == description:
     return []
 
   rietveld_obj.update_description(cl.issue, new_description)
   return [output_api.PresubmitNotifyResult(
       'Automatically added optional Closure bots to run on CQ.')]