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      1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
      2 // Use of this source code is governed by a BSD-style license that can be
      3 // found in the LICENSE file.
      4 
      5 #include "sync/notifier/object_id_invalidation_map_test_util.h"
      6 
      7 #include <algorithm>
      8 
      9 #include "base/basictypes.h"
     10 
     11 namespace syncer {
     12 
     13 using ::testing::MakeMatcher;
     14 using ::testing::MatchResultListener;
     15 using ::testing::Matcher;
     16 using ::testing::MatcherInterface;
     17 using ::testing::PrintToString;
     18 
     19 namespace {
     20 
     21 class ObjectIdInvalidationMapEqMatcher
     22     : public MatcherInterface<const ObjectIdInvalidationMap&> {
     23  public:
     24   explicit ObjectIdInvalidationMapEqMatcher(
     25       const ObjectIdInvalidationMap& expected);
     26 
     27   virtual bool MatchAndExplain(const ObjectIdInvalidationMap& actual,
     28                                MatchResultListener* listener) const;
     29   virtual void DescribeTo(::std::ostream* os) const;
     30   virtual void DescribeNegationTo(::std::ostream* os) const;
     31 
     32  private:
     33   const ObjectIdInvalidationMap expected_;
     34 
     35   DISALLOW_COPY_AND_ASSIGN(ObjectIdInvalidationMapEqMatcher);
     36 };
     37 
     38 ObjectIdInvalidationMapEqMatcher::ObjectIdInvalidationMapEqMatcher(
     39     const ObjectIdInvalidationMap& expected) : expected_(expected) {
     40 }
     41 
     42 bool ObjectIdInvalidationMapEqMatcher::MatchAndExplain(
     43     const ObjectIdInvalidationMap& actual,
     44     MatchResultListener* listener) const {
     45   ObjectIdInvalidationMap expected_only;
     46   ObjectIdInvalidationMap actual_only;
     47   typedef std::pair<invalidation::ObjectId,
     48                     std::pair<Invalidation, Invalidation> >
     49       ValueDifference;
     50   std::vector<ValueDifference> value_differences;
     51 
     52   std::set_difference(expected_.begin(), expected_.end(),
     53                       actual.begin(), actual.end(),
     54                       std::inserter(expected_only, expected_only.begin()),
     55                       expected_.value_comp());
     56   std::set_difference(actual.begin(), actual.end(),
     57                       expected_.begin(), expected_.end(),
     58                       std::inserter(actual_only, actual_only.begin()),
     59                       actual.value_comp());
     60 
     61   for (ObjectIdInvalidationMap::const_iterator it = expected_.begin();
     62        it != expected_.end(); ++it) {
     63     ObjectIdInvalidationMap::const_iterator find_it =
     64         actual.find(it->first);
     65     if (find_it != actual.end() &&
     66         !Matches(Eq(it->second))(find_it->second)) {
     67       value_differences.push_back(std::make_pair(
     68           it->first, std::make_pair(it->second, find_it->second)));
     69     }
     70   }
     71 
     72   if (expected_only.empty() && actual_only.empty() && value_differences.empty())
     73     return true;
     74 
     75   bool printed_header = false;
     76   if (!actual_only.empty()) {
     77     *listener << " which has these unexpected elements: "
     78               << PrintToString(actual_only);
     79     printed_header = true;
     80   }
     81 
     82   if (!expected_only.empty()) {
     83     *listener << (printed_header ? ",\nand" : "which")
     84               << " doesn't have these expected elements: "
     85               << PrintToString(expected_only);
     86     printed_header = true;
     87   }
     88 
     89   if (!value_differences.empty()) {
     90     *listener << (printed_header ? ",\nand" : "which")
     91               << " differ in the following values: "
     92               << PrintToString(value_differences);
     93   }
     94 
     95   return false;
     96 }
     97 
     98 void ObjectIdInvalidationMapEqMatcher::DescribeTo(::std::ostream* os) const {
     99   *os << " is equal to " << PrintToString(expected_);
    100 }
    101 
    102 void ObjectIdInvalidationMapEqMatcher::DescribeNegationTo
    103 (::std::ostream* os) const {
    104   *os << " isn't equal to " << PrintToString(expected_);
    105 }
    106 
    107 }  // namespace
    108 
    109 Matcher<const ObjectIdInvalidationMap&> Eq(
    110     const ObjectIdInvalidationMap& expected) {
    111   return MakeMatcher(new ObjectIdInvalidationMapEqMatcher(expected));
    112 }
    113 
    114 }  // namespace syncer
    115