[Findit] Add cracas_crash_analysis

appengine/findit/model/crash/test/chrome_crash_analysis_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 datetime import datetime
+import hashlib
+import json
+
+from google.appengine.ext import ndb
 
 from crash.test.crash_testcase import CrashTestCase
 from model import analysis_status
 from model import result_status
-from model.crash.fracas_crash_analysis import FracasCrashAnalysis
+from model.crash.chrome_crash_analysis import ChromeCrashAnalysis
 
 
-class FracasCrashAnalysisTest(CrashTestCase):
+class _MockChromeCrashAnalysis(ChromeCrashAnalysis):
+  """Mock ChromeCrashAnalysis class for testing purpose."""
+
+  @staticmethod
+  def _CreateKey(crash_identifiers):
+    return ndb.Key('_MockChromeCrashAnalysis', hashlib.sha1(
+        json.dumps(crash_identifiers, sort_keys=True)).hexdigest())
+
+
+class ChromeCrashAnalysisTest(CrashTestCase):
 
   def testDoNotUseIdentifiersToSetProperties(self):
     crash_identifiers = {
       'chrome_version': '1',
       'signature': 'signature/here',
       'channel': 'canary',
       'platform': 'win',
       'process_type': 'browser',
     }
-    FracasCrashAnalysis.Create(crash_identifiers).put()
-    analysis = FracasCrashAnalysis.Get(crash_identifiers)
+    _MockChromeCrashAnalysis.Create(crash_identifiers).put()
+    analysis = _MockChromeCrashAnalysis.Get(crash_identifiers)
     self.assertIsNone(analysis.crashed_version)
     self.assertIsNone(analysis.signature)
     self.assertIsNone(analysis.channel)
     self.assertIsNone(analysis.platform)
 
-  def testFracasCrashAnalysisReset(self):
-    analysis = FracasCrashAnalysis()
+  def testChromeCrashAnalysisReset(self):
+    analysis = ChromeCrashAnalysis()
     analysis.historical_metadata = {}
     analysis.Reset()
     self.assertIsNone(analysis.channel)
     self.assertIsNone(analysis.historical_metadata)