[Findit] Enable project classifier and component classifier

appengine/findit/crash/test/fracas_test.py

 # Copyright 2016 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.
 
 from common import chromium_deps
 from crash import detect_regression_range
 from crash import fracas
 from crash import fracas_parser
 from crash import findit_for_crash
 from crash.stacktrace import Stacktrace
+from crash.callstack import CallStack
 from crash.test.crash_testcase import CrashTestCase
 
 
 class FracasTest(CrashTestCase):
 
   def testFindCulpritForChromeCrash(self):
     def _MockGetChromeDependency(*_):
       return {}
 
     def _MockParse(*_):
-      return Stacktrace()
+      stacktrace = Stacktrace()
+      stacktrace.extend([CallStack(0)])
+      return stacktrace
 
     def _MockDetectRegressionRange(historic):
       if historic:
         return '50.0.1233.0', '50.0.1234.0'
 
       return None
 
     def _MockGetDEPSRollsDict(*_):
       return {}
 
@@ skipping 25 matching lines @@
         [{'chrome_version': '50.0.1234.0', 'cpm': 0.6}])
 
     self.assertEqual(expected_results, results)
     self.assertEqual(expected_tag, tag)
 
     results, tag = fracas.FindCulpritForChromeCrash(
         'signature', 'win', 'frame1\nframe2', '50.0.1234.0', [])
 
     expected_tag['has_regression_range'] = False
     self.assertEqual(expected_tag, tag)