Refactor common invalidation framework types

sync/notifier/object_id_invalidation_map_test_util.cc

-// 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.
-
-#include "sync/notifier/object_id_invalidation_map_test_util.h"
-
-#include <algorithm>
-
-#include "base/basictypes.h"
-
-namespace syncer {
-
-using ::testing::MakeMatcher;
-using ::testing::MatchResultListener;
-using ::testing::Matcher;
-using ::testing::MatcherInterface;
-using ::testing::PrintToString;
-
-namespace {
-
-class ObjectIdInvalidationMapEqMatcher
-    : public MatcherInterface<const ObjectIdInvalidationMap&> {
- public:
-  explicit ObjectIdInvalidationMapEqMatcher(
-      const ObjectIdInvalidationMap& expected);
-
-  virtual bool MatchAndExplain(const ObjectIdInvalidationMap& actual,
-                               MatchResultListener* listener) const;
-  virtual void DescribeTo(::std::ostream* os) const;
-  virtual void DescribeNegationTo(::std::ostream* os) const;
-
- private:
-  const ObjectIdInvalidationMap expected_;
-
-  DISALLOW_COPY_AND_ASSIGN(ObjectIdInvalidationMapEqMatcher);
-};
-
-ObjectIdInvalidationMapEqMatcher::ObjectIdInvalidationMapEqMatcher(
-    const ObjectIdInvalidationMap& expected) : expected_(expected) {
-}
-
-bool ObjectIdInvalidationMapEqMatcher::MatchAndExplain(
-    const ObjectIdInvalidationMap& actual,
-    MatchResultListener* listener) const {
-  ObjectIdInvalidationMap expected_only;
-  ObjectIdInvalidationMap actual_only;
-  typedef std::pair<invalidation::ObjectId,
-                    std::pair<Invalidation, Invalidation> >
-      ValueDifference;
-  std::vector<ValueDifference> value_differences;
-
-  std::set_difference(expected_.begin(), expected_.end(),
-                      actual.begin(), actual.end(),
-                      std::inserter(expected_only, expected_only.begin()),
-                      expected_.value_comp());
-  std::set_difference(actual.begin(), actual.end(),
-                      expected_.begin(), expected_.end(),
-                      std::inserter(actual_only, actual_only.begin()),
-                      actual.value_comp());
-
-  for (ObjectIdInvalidationMap::const_iterator it = expected_.begin();
-       it != expected_.end(); ++it) {
-    ObjectIdInvalidationMap::const_iterator find_it =
-        actual.find(it->first);
-    if (find_it != actual.end() &&
-        !Matches(Eq(it->second))(find_it->second)) {
-      value_differences.push_back(std::make_pair(
-          it->first, std::make_pair(it->second, find_it->second)));
-    }
-  }
-
-  if (expected_only.empty() && actual_only.empty() && value_differences.empty())
-    return true;
-
-  bool printed_header = false;
-  if (!actual_only.empty()) {
-    *listener << " which has these unexpected elements: "
-              << PrintToString(actual_only);
-    printed_header = true;
-  }
-
-  if (!expected_only.empty()) {
-    *listener << (printed_header ? ",\nand" : "which")
-              << " doesn't have these expected elements: "
-              << PrintToString(expected_only);
-    printed_header = true;
-  }
-
-  if (!value_differences.empty()) {
-    *listener << (printed_header ? ",\nand" : "which")
-              << " differ in the following values: "
-              << PrintToString(value_differences);
-  }
-
-  return false;
-}
-
-void ObjectIdInvalidationMapEqMatcher::DescribeTo(::std::ostream* os) const {
-  *os << " is equal to " << PrintToString(expected_);
-}
-
-void ObjectIdInvalidationMapEqMatcher::DescribeNegationTo
-(::std::ostream* os) const {
-  *os << " isn't equal to " << PrintToString(expected_);
-}
-
-}  // namespace
-
-Matcher<const ObjectIdInvalidationMap&> Eq(
-    const ObjectIdInvalidationMap& expected) {
-  return MakeMatcher(new ObjectIdInvalidationMapEqMatcher(expected));
-}
-
-}  // namespace syncer