Added support for versioning of layout test results of run-webkit-tests runs

Tools/Scripts/webkitpy/layout_tests/models/test_run_results.py

 # Copyright (C) 2010 Google Inc. All rights reserved.
 # Copyright (C) 2010 Gabor Rapcsanyi (rgabor@inf.u-szeged.hu), University of Szeged
 #
 # 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
@@ skipping 145 matching lines @@
 
     if test_failures.FailureMissingImage in failure_types or test_failures.FailureMissingImageHash in failure_types:
         test_dict['is_missing_image'] = True
 
     if test_failures.FailureTestHarnessAssertion in failure_types:
         test_dict['is_testharness_test'] = True
 
     return test_dict
 
 
-def summarize_results(port_obj, expectations, initial_results, retry_results, enabled_pixel_tests_in_retry, only_include_failing=False):
+def summarize_results(port_obj, expectations, initial_results, retry_results, enabled_pixel_tests_in_retry, only_include_failing=False, archived_results_path=None, revision_info=''):

[Dirk Pranke, 2014/06/17 17:58:58]

it feels a bit odd to me that the results object would know about the previous
results. What are the advantages of this approach vs keeping things completely
separate?

[patro, 2014/07/15 10:36:57]

Yes, things can be seperate there need not be any link .The script does the
ordering of the results based on the directory names (which have timestamps).

     """Returns a dictionary containing a summary of the test runs, with the following fields:
         'version': a version indicator
         'fixable': The number of fixable tests (NOW - PASS)
         'skipped': The number of skipped tests (NOW & SKIPPED)
         'num_regressions': The number of non-flaky failures
         'num_flaky': The number of flaky failures
         'num_passes': The number of unexpected passes
         'tests': a dict of tests -> {'expected': '...', 'actual': '...'}
     """
     results = {}
@@ skipping 122 matching lines @@
     results['num_regressions'] = num_regressions
     results['interrupted'] = initial_results.interrupted  # Does results.html have enough information to compute this itself? (by checking total number of results vs. total number of tests?)
     results['layout_tests_dir'] = port_obj.layout_tests_dir()
     results['has_wdiff'] = port_obj.wdiff_available()
     results['has_pretty_patch'] = port_obj.pretty_patch_available()
     results['pixel_tests_enabled'] = port_obj.get_option('pixel_tests')
     results['seconds_since_epoch'] = int(time.time())
     results['build_number'] = port_obj.get_option('build_number')
     results['builder_name'] = port_obj.get_option('builder_name')
 
+    if port_obj.get_option("enable_versioned_results") and archived_results_path:
+        results['previous_results_location'] = archived_results_path
+        results['chromium_revision'] = ''
+        results['blink_revision'] = ''
+
+
     try:
         # Don't do this by default since it takes >100ms.
         # It's only used for uploading data to the flakiness dashboard.
         if port_obj.get_option("builder_name"):
             port_obj.host.initialize_scm()
             for (name, path) in port_obj.repository_paths():
                 results[name.lower() + '_revision'] = port_obj.host.scm().svn_revision(path)
     except Exception, e:
         _log.warn("Failed to determine svn revision for checkout (cwd: %s, webkit_base: %s), leaving 'revision' key blank in full_results.json.\n%s" % (port_obj._filesystem.getcwd(), port_obj.path_from_webkit_base(), e))
         # Handle cases where we're running outside of version control.
         import traceback
         _log.debug('Failed to learn head svn revision:')
         _log.debug(traceback.format_exc())
         results['chromium_revision'] = ""
         results['blink_revision'] = ""
 
     return results