Prepare python code for reftests.

sky/tools/webkitpy/layout_tests/models/test_run_results_unittest.py

 # Copyright (C) 2010 Google Inc. All rights reserved.
 #
 # Redistribution and use in source and binary forms, with or without
 # modification, are permitted provided that the following conditions are
 # met:
 #
 #     * Redistributions of source code must retain the above copyright
 # notice, this list of conditions and the following disclaimer.
 #     * Redistributions in binary form must reproduce the above
 # copyright notice, this list of conditions and the following disclaimer
@@ skipping 87 matching lines @@
 
     return test_run_results.summarize_results(port, initial_results.expectations, initial_results, retry_results, enabled_pixel_tests_in_retry=False, only_include_failing=only_include_failing)
 
 
 class InterpretTestFailuresTest(unittest.TestCase):
     def setUp(self):
         host = MockHost()
         self.port = host.port_factory.get(port_name='test')
 
     def test_interpret_test_failures(self):
-        test_dict = test_run_results._interpret_test_failures([test_failures.FailureReftestMismatchDidNotOccur(self.port.abspath_for_test('foo/reftest-expected-mismatch.html'))])
+        test_dict = test_run_results._interpret_test_failures([test_failures.FailureReftestMismatchDidNotOccur(self.port.abspath_for_test('foo/reftest-expected-mismatch.sky'))])
         self.assertEqual(len(test_dict), 0)
 
         test_dict = test_run_results._interpret_test_failures([test_failures.FailureMissingAudio()])
         self.assertIn('is_missing_audio', test_dict)
 
         test_dict = test_run_results._interpret_test_failures([test_failures.FailureMissingResult()])
         self.assertIn('is_missing_text', test_dict)
 
         test_dict = test_run_results._interpret_test_failures([test_failures.FailureMissingImage()])
         self.assertIn('is_missing_image', test_dict)
@@ skipping 78 matching lines @@
     def test_timeout_then_unexpected_pass(self):
         tests = ['failures/expected/image.html']
         expectations = test_expectations.TestExpectations(self.port, tests)
         initial_results = test_run_results.TestRunResults(expectations, len(tests))
         initial_results.add(get_result('failures/expected/image.html', test_expectations.TIMEOUT, run_time=1), False, False)
         retry_results = test_run_results.TestRunResults(expectations, len(tests))
         retry_results.add(get_result('failures/expected/image.html', test_expectations.PASS, run_time=0.1), False, False)
         summary = test_run_results.summarize_results(self.port, expectations, initial_results, retry_results, enabled_pixel_tests_in_retry=True, only_include_failing=True)
         self.assertEquals(summary['num_regressions'], 0)
         self.assertEquals(summary['num_passes'], 1)