Cross-repo recipe package system.

third_party/recipe_engine/expect_tests/serialize.py

Index: third_party/recipe_engine/expect_tests/serialize.py
diff --git a/third_party/recipe_engine/expect_tests/serialize.py b/third_party/recipe_engine/expect_tests/serialize.py
deleted file mode 100644
index 2d498d9d1c647151a2b85c10a8e90bf675703083..0000000000000000000000000000000000000000
--- a/third_party/recipe_engine/expect_tests/serialize.py
+++ /dev/null
@@ -1,127 +0,0 @@
-# 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 difflib
-import json
-import os
-import pprint
-
-from collections import OrderedDict
-
-try:
-  import yaml  # pylint: disable=F0401
-except ImportError:
-  yaml = None
-
-
-NonExistant = object()
-
-
-SUPPORTED_SERIALIZERS = {'json', 'yaml'}
-SERIALIZERS = {}
-
-
-# JSON support
-def re_encode(obj):
-  if isinstance(obj, dict):
-    return {re_encode(k): re_encode(v) for k, v in obj.iteritems()}
-  elif isinstance(obj, list):
-    return [re_encode(i) for i in obj]
-  elif isinstance(obj, unicode):
-    return obj.encode('utf-8')
-  else:
-    return obj
-
-
-SERIALIZERS['json'] = (
-    lambda s: re_encode(json.load(s)),
-    lambda data, stream: json.dump(
-        data, stream, sort_keys=True, indent=2, separators=(',', ': ')))
-
-
-# YAML support
-if yaml:
-  _YAMLSafeLoader = getattr(yaml, 'CSafeLoader', yaml.SafeLoader)
-  _YAMLSafeDumper = getattr(yaml, 'CSafeDumper', yaml.SafeDumper)
-
-  MAPPING_TAG = yaml.resolver.BaseResolver.DEFAULT_MAPPING_TAG
-
-  class OrderedLoader(_YAMLSafeLoader):
-    def __init__(self, *args, **kwargs):  # pylint: disable=E1002
-      super(OrderedLoader, self).__init__(*args, **kwargs)
-      self.add_constructor(
-          MAPPING_TAG,
-          lambda loader, node: OrderedDict(loader.construct_pairs(node)))
-
-  class OrderedDumper(_YAMLSafeDumper):
-    def __init__(self, *args, **kwargs):  # pylint: disable=E1002
-      super(OrderedDumper, self).__init__(*args, **kwargs)
-      def _dict_representer(dumper, data):
-        return dumper.represent_mapping(MAPPING_TAG, data.items())
-      self.add_representer(OrderedDict, _dict_representer)
-
-  SERIALIZERS['yaml'] = (
-      lambda stream: yaml.load(stream, OrderedLoader),
-      lambda data, stream: yaml.dump(
-          data, stream, OrderedDumper, default_flow_style=False,
-          encoding='utf-8'))
-
-
-def GetCurrentData(test):
-  """
-  @type test: Test()
-  @returns: The deserialized data (or NonExistant), and a boolean indicating if
-            the current serialized data is in the same format which was
-            requested by |test|.
-  @rtype: (dict, bool)
-  """
-  for ext in sorted(SUPPORTED_SERIALIZERS, key=lambda s: s != test.ext):
-    path = test.expect_path(ext)
-    if path is None:
-      return None, True
-
-    if ext not in SERIALIZERS and ext == test.ext:
-      raise Exception('The package to support %s is not installed.' % ext)
-    if os.path.exists(path):
-      try:
-        with open(path, 'rb') as f:
-          data = SERIALIZERS[ext][0](f)
-      except ValueError as err:
-        raise ValueError('Bad format of %s: %s' % (path, err))
-      return data, ext == test.ext
-  return NonExistant, True
-
-
-def WriteNewData(test, data):
-  """
-  @type test: Test()
-  """
-  if data is None:
-    return
-  if test.ext not in SUPPORTED_SERIALIZERS:
-    raise Exception('%s is not a supported serializer.' % test.ext)
-  if test.ext not in SERIALIZERS:
-    raise Exception('The package to support %s is not installed.' % test.ext)
-  with open(test.expect_path(), 'wb') as f:
-    SERIALIZERS[test.ext][1](data, f)
-
-
-def DiffData(old, new):
-  """
-  Takes old data and new data, then returns a textual diff as a list of lines.
-  @type old: dict
-  @type new: dict
-  @rtype: [str]
-  """
-  if old is NonExistant:
-    return new
-  if old == new:
-    return None
-  else:
-    return list(difflib.context_diff(
-        pprint.pformat(old).splitlines(),
-        pprint.pformat(new).splitlines(),
-        fromfile='expected', tofile='current',
-        n=4, lineterm=''
-    ))