[Findit] Capture versionized metadata for master_flake_analysis

appengine/findit/model/flake/test/master_flake_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 unittest
 
 from model import analysis_status
 from model.flake.master_flake_analysis import MasterFlakeAnalysis
@@ skipping 66 matching lines @@
 
   def testMasterFlakeAnalysisStatusDescriptionError(self):
     analysis = MasterFlakeAnalysis.Create('m', 'b', 123, 's', 't')
     analysis.status = analysis_status.ERROR
     self.assertEqual('Error', analysis.status_description)
 
   def testMasterFlakeAnalysisStepTestName(self):
     analysis = MasterFlakeAnalysis.Create('m', 'b', 123, 's', 't')
     self.assertEqual('s', analysis.step_name)
     self.assertEqual('t', analysis.test_name)
+
+  def testReset(self):
+    analysis = MasterFlakeAnalysis.Create('m', 'b', 123, 's', 't')
+    analysis.swarming_rerun_results = {'a': 1}
+    analysis.status = analysis_status.RUNNING
+    analysis.correct = None
+    analysis.build_numbers = [1, 2, 3]
+    analysis.pass_rates = [1.0, 1.0, 1.0]
+    analysis.suspected_flake_build_number = 123
+    analysis.Reset()
+
+    self.assertEqual({}, analysis.swarming_rerun_results)
+    self.assertEqual(analysis_status.PENDING, analysis.status)
+    self.assertIsNone(analysis.correct)
+    self.assertIsNone(analysis.completed_time)
+    self.assertIsNone(analysis.suspected_flake_build_number)
+    self.assertEqual([], analysis.build_numbers)
+    self.assertEqual([], analysis.pass_rates)