Revert "delete old things!"

gm/display_json_results.py

+#!/usr/bin/env python
+# Copyright (c) 2013 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.
+
+"""Utility to display a summary of JSON-format GM results, and exit with
+a nonzero errorcode if there were non-ignored failures in the GM results.
+
+Usage:
+  python display_json_results.py <filename>
+
+TODO(epoger): We may want to add flags to set the following:
+- which error types cause a nonzero return code
+- maximum number of tests to list for any one ResultAccumulator
+  (to keep the output reasonably short)
+"""
+
+__author__ = 'Elliot Poger'
+
+
+# system-level imports
+import sys
+
+# local imports
+import gm_json
+
+
+class ResultAccumulator(object):
+  """Object that accumulates results of a given type, and can generate a
+     summary upon request."""
+
+  def __init__(self, name, do_list, do_fail):
+    """name: name of the category this result type falls into
+       do_list: whether to list all of the tests with this results type
+       do_fail: whether to return with nonzero exit code if there are any
+                results of this type
+    """
+    self._name = name
+    self._do_list = do_list
+    self._do_fail = do_fail
+    self._testnames = []
+
+  def AddResult(self, testname):
+    """Adds a result of this particular type.
+       testname: (string) name of the test"""
+    self._testnames.append(testname)
+
+  def ShouldSignalFailure(self):
+    """Returns true if this result type is serious (self._do_fail is True)
+       and there were any results of this type."""
+    if self._do_fail and self._testnames:
+      return True
+    else:
+      return False
+
+  def GetSummaryLine(self):
+    """Returns a single-line string summary of all results added to this
+       accumulator so far."""
+    summary = ''
+    if self._do_fail:
+      summary += '[*] '
+    else:
+      summary += '[ ] '
+    summary += str(len(self._testnames))
+    summary += ' '
+    summary += self._name
+    if self._do_list:
+      summary += ': '
+      for testname in self._testnames:
+        summary += testname
+        summary += ' '
+    return summary
+
+
+def Display(filepath):
+  """Displays a summary of the results in a JSON file.
+     Returns True if the results are free of any significant failures.
+     filepath: (string) path to JSON file"""
+
+  # Map labels within the JSON file to the ResultAccumulator for each label.
+  results_map = {
+    gm_json.JSONKEY_ACTUALRESULTS_FAILED:
+        ResultAccumulator(name='ExpectationsMismatch',
+                          do_list=True, do_fail=True),
+    gm_json.JSONKEY_ACTUALRESULTS_FAILUREIGNORED:
+        ResultAccumulator(name='IgnoredExpectationsMismatch',
+                          do_list=True, do_fail=False),
+    gm_json.JSONKEY_ACTUALRESULTS_NOCOMPARISON:
+        ResultAccumulator(name='MissingExpectations',
+                          do_list=False, do_fail=False),
+    gm_json.JSONKEY_ACTUALRESULTS_SUCCEEDED:
+        ResultAccumulator(name='Passed',
+                          do_list=False, do_fail=False),
+  }
+
+  success = True
+  json_dict = gm_json.LoadFromFile(filepath)
+  actual_results = json_dict[gm_json.JSONKEY_ACTUALRESULTS]
+  for label, accumulator in results_map.iteritems():
+    results = actual_results[label]
+    if results:
+      for result in results:
+        accumulator.AddResult(result)
+    print accumulator.GetSummaryLine()
+    if accumulator.ShouldSignalFailure():
+      success = False
+  print '(results marked with [*] will cause nonzero return value)'
+  return success
+
+
+if '__main__' == __name__:
+  if len(sys.argv) != 2:
+    raise Exception('usage: %s <input-json-filepath>' % sys.argv[0])
+  sys.exit(0 if Display(sys.argv[1]) else 1)