1 files changed, 123 insertions, 0 deletions
diff --git a/chromium/media/tools/layout_tests/test_expectations.py b/chromium/media/tools/layout_tests/test_expectations.py
new file mode 100644
index 00000000000..58b21de6883
--- /dev/null
+++ b/chromium/media/tools/layout_tests/test_expectations.py
@@ -0,0 +1,123 @@
+# Copyright (c) 2012 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.
+
+"""A module to analyze test expectations for Webkit layout tests."""
+
+import urllib2
+
+from webkitpy.layout_tests.models.test_expectations import *
+
+# Default location for chromium test expectation file.
+# TODO(imasaki): support multiple test expectations files.
+DEFAULT_TEST_EXPECTATIONS_LOCATION = (
+    'http://src.chromium.org/blink/trunk/LayoutTests/TestExpectations')
+
+# The following is from test expectation syntax. The detail can be found in
+# http://www.chromium.org/developers/testing/webkit-layout-tests#TOC-Test-Expectations
+# <decision> ::== [SKIP] [WONTFIX] [SLOW]
+DECISION_NAMES = ['SKIP', 'WONTFIX', 'SLOW']
+# <config> ::== RELEASE | DEBUG
+CONFIG_NAMES = ['RELEASE', 'DEBUG']
+# Only hard code keywords we don't expect to change.  Determine the rest from
+# the format of the status line.
+KNOWN_TE_KEYWORDS = DECISION_NAMES + CONFIG_NAMES
+
+
+class TestExpectations(object):
+  """A class to model the content of test expectation file for analysis.
+
+  This class retrieves the TestExpectations file via HTTP from WebKit and uses
+  the WebKit layout test processor to process each line.
+
+  The resulting dictionary is stored in |all_test_expectation_info| and looks
+  like:
+
+    {'<test name>': [{'<modifier0>': True, '<modifier1>': True, ...,
+                     'Platforms: ['<platform0>', ... ], 'Bugs': ['....']}]}
+
+  Duplicate keys are merged (though technically they shouldn't exist).
+
+  Example:
+    crbug.com/145590 [ Android ] \
+        platform/chromium/media/video-frame-size-change.html [ Timeout ]
+    webkit.org/b/84724 [ SnowLeopard ] \
+        platform/chromium/media/video-frame-size-change.html \
+        [ ImageOnlyFailure Pass ]
+
+  {'platform/chromium/media/video-frame-size-change.html': [{'IMAGE': True,
+   'Bugs': ['BUGWK84724', 'BUGCR145590'], 'Comments': '',
+   'Platforms': ['SNOWLEOPARD', 'ANDROID'], 'TIMEOUT': True, 'PASS': True}]}
+  """
+
+  def __init__(self, url=DEFAULT_TEST_EXPECTATIONS_LOCATION):
+    """Read the test expectation file from the specified URL and parse it.
+
+    Args:
+      url: A URL string for the test expectation file.
+
+    Raises:
+      NameError when the test expectation file cannot be retrieved from |url|.
+    """
+    self.all_test_expectation_info = {}
+    resp = urllib2.urlopen(url)
+    if resp.code != 200:
+      raise NameError('Test expectation file does not exist in %s' % url)
+    # Start parsing each line.
+    for line in resp.read().split('\n'):
+      line = line.strip()
+      # Skip comments.
+      if line.startswith('#'):
+        continue
+      testname, te_info = self.ParseLine(line)
+      if not testname or not te_info:
+        continue
+      if testname in self.all_test_expectation_info:
+        # Merge keys if entry already exists.
+        for k in te_info.keys():
+          if (isinstance(te_info[k], list) and
+              k in self.all_test_expectation_info[testname]):
+            self.all_test_expectation_info[testname][0][k] += te_info[k]
+          else:
+            self.all_test_expectation_info[testname][0][k] = te_info[k]
+      else:
+        self.all_test_expectation_info[testname] = [te_info]
+
+  @staticmethod
+  def ParseLine(line):
+    """Parses the provided line using WebKit's TextExpecations parser.
+
+    Returns:
+      Tuple of test name, test expectations dictionary.  See class documentation
+      for the format of the dictionary
+    """
+    test_expectation_info = {}
+    parsed = TestExpectationParser._tokenize_line('TestExpectations', line, 0)
+    if parsed.is_invalid():
+      return None, None
+
+    test_expectation_info['Comments'] = parsed.comment or ''
+
+    # Split the modifiers dictionary into the format we want.
+    remaining_modifiers = list(parsed.modifiers)
+    test_expectation_info['Bugs'] = []
+    for m in parsed.modifiers:
+      if (m.startswith(WEBKIT_BUG_PREFIX) or
+          m.startswith(CHROMIUM_BUG_PREFIX) or
+          m.startswith(V8_BUG_PREFIX) or
+          m.startswith(NAMED_BUG_PREFIX)):
+        test_expectation_info['Bugs'].append(m)
+        remaining_modifiers.remove(m)
+      elif m in KNOWN_TE_KEYWORDS:
+        test_expectation_info[m] = True
+        remaining_modifiers.remove(m)
+
+    # The modifiers left over should all be platform names.
+    test_expectation_info['Platforms'] = list(remaining_modifiers)
+
+    # Shovel the expectations and modifiers in as "<key>: True" entries.  Ugly,
+    # but required by the rest of the pipeline for parsing.
+    for m in parsed.expectations + remaining_modifiers:
+      test_expectation_info[m] = True
+
+    return parsed.name, test_expectation_info