Update from chromium 62675d9fb31fb8cedc40f68e78e8445a74f362e7

testing/scripts/common.py

Index: testing/scripts/common.py
diff --git a/testing/scripts/common.py b/testing/scripts/common.py
new file mode 100644
index 0000000000000000000000000000000000000000..92ad6882ec956d6d0342091f76d22c57fb7c005e
--- /dev/null
+++ b/testing/scripts/common.py
@@ -0,0 +1,117 @@
+# Copyright 2014 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.
+
+import argparse
+import contextlib
+import json
+import os
+import subprocess
+import tempfile
+
+
+SCRIPT_DIR = os.path.abspath(os.path.dirname(__file__))
+SRC_DIR = os.path.abspath(
+    os.path.join(SCRIPT_DIR, os.path.pardir, os.path.pardir))
+
+
+# run-webkit-tests returns the number of failures as the return
+# code, but caps the return code at 101 to avoid overflow or colliding
+# with reserved values from the shell.
+MAX_FAILURES_EXIT_STATUS = 101
+
+
+def run_script(argv, funcs):
+  def parse_json(path):
+    with open(path) as f:
+      return json.load(f)
+  parser = argparse.ArgumentParser()
+  # TODO(phajdan.jr): Make build-config-fs required after passing it in recipe.
+  parser.add_argument('--build-config-fs')
+  parser.add_argument('--paths', type=parse_json, default={})
+  parser.add_argument('--properties', type=parse_json, default={})
+
+  subparsers = parser.add_subparsers()
+
+  run_parser = subparsers.add_parser('run')
+  run_parser.add_argument(
+      '--output', type=argparse.FileType('w'), required=True)
+  run_parser.add_argument('--filter-file', type=argparse.FileType('r'))
+  run_parser.set_defaults(func=funcs['run'])
+
+  run_parser = subparsers.add_parser('compile_targets')
+  run_parser.add_argument(
+      '--output', type=argparse.FileType('w'), required=True)
+  run_parser.set_defaults(func=funcs['compile_targets'])
+
+  args = parser.parse_args(argv)
+  return args.func(args)
+
+
+def run_command(argv):
+  print 'Running %r' % argv
+  rc = subprocess.call(argv)
+  print 'Command %r returned exit code %d' % (argv, rc)
+  return rc
+
+
+@contextlib.contextmanager
+def temporary_file():
+  fd, path = tempfile.mkstemp()
+  os.close(fd)
+  try:
+    yield path
+  finally:
+    os.remove(path)
+
+
+def parse_common_test_results(json_results):
+  def convert_trie_to_flat_paths(trie, prefix=None):
+    # Also see webkitpy.layout_tests.layout_package.json_results_generator
+    result = {}
+    for name, data in trie.iteritems():
+      if prefix:
+        name = prefix + '/' + name
+      if len(data) and not 'actual' in data and not 'expected' in data:
+        result.update(convert_trie_to_flat_paths(data, name))
+      else:
+        result[name] = data
+    return result
+
+  results = {
+    'passes': {},
+    'unexpected_passes': {},
+    'failures': {},
+    'unexpected_failures': {},
+    'flakes': {},
+    'unexpected_flakes': {},
+  }
+
+  # TODO(dpranke): crbug.com/357866 - we should simplify the handling of
+  # both the return code and parsing the actual results, below.
+
+  passing_statuses = ('PASS', 'SLOW', 'NEEDSREBASELINE',
+                        'NEEDSMANUALREBASELINE')
+
+  for test, result in convert_trie_to_flat_paths(
+      json_results['tests']).iteritems():
+    key = 'unexpected_' if result.get('is_unexpected') else ''
+    data = result['actual']
+    actual_results = data.split()
+    last_result = actual_results[-1]
+    expected_results = result['expected'].split()
+
+    if (len(actual_results) > 1 and
+        (last_result in expected_results or last_result in passing_statuses)):
+      key += 'flakes'
+    elif last_result in passing_statuses:
+      key += 'passes'
+      # TODO(dpranke): crbug.com/357867 ...  Why are we assigning result
+      # instead of actual_result here. Do we even need these things to be
+      # hashes, or just lists?
+      data = result
+    else:
+      key += 'failures'
+    results[key][test] = data
+
+  return results