matchers.h

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// Copyright 2019 Google LLC
//
// Licensed 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.

#ifndef GOOGLE_CLOUD_CPP_SPANNER_GOOGLE_CLOUD_SPANNER_TESTING_MATCHERS_H_
#define GOOGLE_CLOUD_CPP_SPANNER_GOOGLE_CLOUD_SPANNER_TESTING_MATCHERS_H_

#include "google/cloud/spanner/internal/session_holder.h"
#include "google/cloud/spanner/transaction.h"
#include "google/cloud/spanner/version.h"
#include <google/protobuf/util/message_differencer.h>
#include <gmock/gmock.h>
#include <cstdint>

namespace google {
namespace cloud {
namespace spanner_testing {
inline namespace SPANNER_CLIENT_NS {

MATCHER_P(IsProtoEqual, value, "") {
  std::string delta;
  google::protobuf::util::MessageDifferencer differencer;
  differencer.ReportDifferencesToString(&delta);
  auto const result = differencer.Compare(arg, value);
  *result_listener << "\n" << delta;
  return result;
}

MATCHER_P2(
    HasSessionAndTransactionId, session_id, transaction_id,
    "Verifies a Transaction has the expected Session and Transaction IDs") {
  return google::cloud::spanner::internal::Visit(
      arg, [&](google::cloud::spanner::internal::SessionHolder& session,
               google::spanner::v1::TransactionSelector& s, std::int64_t) {
        bool result = true;
        if (session.session_name() != session_id) {
          *result_listener << "Session ID mismatch: " << session.session_name()
                           << " != " << session_id;
          result = false;
        }
        if (s.id() != transaction_id) {
          *result_listener << "Transaction ID mismatch: " << s.id()
                           << " != " << transaction_id;
          result = false;
        }
        return result;
      });
}

}  // namespace SPANNER_CLIENT_NS
}  // namespace spanner_testing
}  // namespace cloud
}  // namespace google

#endif  // GOOGLE_CLOUD_CPP_SPANNER_GOOGLE_CLOUD_SPANNER_TESTING_MATCHERS_H_