pagespeed/kernel/base/proto_matcher_impl.h

/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 * 
 *   http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */


// Do not use this file directly! Instead include proto_matcher.h

#ifndef PAGESPEED_KERNEL_BASE_PROTO_MATCHER_IMPL_H_
#define PAGESPEED_KERNEL_BASE_PROTO_MATCHER_IMPL_H_

#include <memory>

#include "base/logging.h"
#include "pagespeed/kernel/base/gmock.h"
#include "pagespeed/kernel/base/proto_util.h"
#include "pagespeed/kernel/base/string.h"


#include "gmock/gmock-matchers.h"
#include "google/protobuf/util/message_differencer.h"

using google::protobuf::util::MessageDifferencer;


namespace net_instaweb {

class EqualsProtoMatcher {
 public:
  explicit EqualsProtoMatcher(const GoogleString& str)
      : expected_proto_str_(str) {}

  template <typename Proto>
  bool MatchAndExplain(const Proto& actual_proto,
                       testing::MatchResultListener* /* listener */) const {
    std::unique_ptr<Proto> expected_proto(actual_proto.New());
    CHECK(ParseTextFormatProtoFromString(expected_proto_str_,
                                         expected_proto.get()));
    return MessageDifferencer::Equals(*expected_proto, actual_proto);
  }

  void DescribeTo(::std::ostream* os) const {
    *os << "matches proto: " << expected_proto_str_;
  }

  void DescribeNegationTo(::std::ostream* os) const {
    *os << "does not match proto: " << expected_proto_str_;
  }

 private:
  const GoogleString expected_proto_str_;
};

inline testing::PolymorphicMatcher<EqualsProtoMatcher>
EqualsProto(const GoogleString& x) {
  return testing::MakePolymorphicMatcher(EqualsProtoMatcher(x));
}

}  // namespace net_instaweb

#endif  // PAGESPEED_KERNEL_BASE_PROTO_MATCHER_IMPL_H_