/*
 *
 * Copyright 2016 gRPC authors.
 *
 * 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.
 *
 */

// Hack TEST macro of gTest and make they conform XCTest style. We only
// need test name (b), not test case name (a).
#define TEST(a, b) -(void)test##b
#define ASSERT_TRUE XCTAssert
#define ASSERT_EQ XCTAssertEqual

#import <XCTest/XCTest.h>

#include <grpcpp/test/server_context_test_spouse.h>

#include <cstring>
#include <vector>

#include <grpcpp/impl/grpc_library.h>

static grpc::internal::GrpcLibraryInitializer g_initializer;

const char key1[] = "metadata-key1";
const char key2[] = "metadata-key2";
const char val1[] = "metadata-val1";
const char val2[] = "metadata-val2";

bool ClientMetadataContains(const grpc::ServerContext& context, const grpc::string_ref& key,
                            const grpc::string_ref& value) {
  const auto& client_metadata = context.client_metadata();
  for (auto iter = client_metadata.begin(); iter != client_metadata.end(); ++iter) {
    if (iter->first == key && iter->second == value) {
      return true;
    }
  }
  return false;
}

@interface ServerContextTestSpouseTest : XCTestCase

@end

@implementation ServerContextTestSpouseTest

TEST(ServerContextTestSpouseTest, ClientMetadata) {
  grpc::ServerContext context;
  grpc::testing::ServerContextTestSpouse spouse(&context);

  spouse.AddClientMetadata(key1, val1);
  ASSERT_TRUE(ClientMetadataContains(context, key1, val1));

  spouse.AddClientMetadata(key2, val2);
  ASSERT_TRUE(ClientMetadataContains(context, key1, val1));
  ASSERT_TRUE(ClientMetadataContains(context, key2, val2));
}

TEST(ServerContextTestSpouseTest, InitialMetadata) {
  grpc::ServerContext context;
  grpc::testing::ServerContextTestSpouse spouse(&context);
  std::multimap<std::string, std::string> metadata;

  context.AddInitialMetadata(key1, val1);
  metadata.insert(std::pair<std::string, std::string>(key1, val1));
  ASSERT_EQ(metadata, spouse.GetInitialMetadata());

  context.AddInitialMetadata(key2, val2);
  metadata.insert(std::pair<std::string, std::string>(key2, val2));
  ASSERT_EQ(metadata, spouse.GetInitialMetadata());
}

TEST(ServerContextTestSpouseTest, TrailingMetadata) {
  grpc::ServerContext context;
  grpc::testing::ServerContextTestSpouse spouse(&context);
  std::multimap<std::string, std::string> metadata;

  context.AddTrailingMetadata(key1, val1);
  metadata.insert(std::pair<std::string, std::string>(key1, val1));
  ASSERT_EQ(metadata, spouse.GetTrailingMetadata());

  context.AddTrailingMetadata(key2, val2);
  metadata.insert(std::pair<std::string, std::string>(key2, val2));
  ASSERT_EQ(metadata, spouse.GetTrailingMetadata());
}

@end
