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/*
* Copyright 2019 The WebRTC project authors. All Rights Reserved.
*
* Use of this source code is governed by a BSD-style license
* that can be found in the LICENSE file in the root of the source
* tree. An additional intellectual property rights grant can be found
* in the file PATENTS. All contributing project authors may
* be found in the AUTHORS file in the root of the source tree.
*/
#include <cstddef>
#include <memory>
#include <string>
#include "api/rtc_event_log/rtc_event_log.h"
#include "api/test/create_network_emulation_manager.h"
#include "api/test/network_emulation_manager.h"
#include "api/test/simulated_network.h"
#include "api/transport/test/create_feedback_generator.h"
#include "api/transport/test/feedback_generator_interface.h"
#include "api/units/time_delta.h"
#include "logging/rtc_event_log/rtc_event_log_parser.h"
#include "test/gmock.h"
#include "test/gtest.h"
#include "test/logging/log_writer.h"
#include "test/logging/memory_log_writer.h"
namespace webrtc {
using ::testing::Eq;
using ::testing::Field;
using ::testing::SizeIs;
TEST(FeedbackGeneratorTest, ReportsFeedbackForSentPackets) {
size_t kPacketSize = 1000;
auto gen = CreateFeedbackGenerator(FeedbackGenerator::Config());
for (int i = 0; i < 10; ++i) {
gen->SendPacket(kPacketSize);
gen->Sleep(TimeDelta::Millis(50));
}
auto feedback_list = gen->PopFeedback();
EXPECT_GT(feedback_list.size(), 0u);
for (const auto& feedback : feedback_list) {
EXPECT_GT(feedback.packet_feedbacks.size(), 0u);
for (const auto& packet : feedback.packet_feedbacks) {
EXPECT_EQ(packet.sent_packet.size.bytes<size_t>(), kPacketSize);
}
}
}
TEST(FeedbackGeneratorTest, FeedbackIncludesLostPackets) {
size_t kPacketSize = 1000;
auto gen = CreateFeedbackGenerator(FeedbackGenerator::Config());
BuiltInNetworkBehaviorConfig send_config_with_loss;
send_config_with_loss.loss_percent = 50;
gen->SetSendConfig(send_config_with_loss);
for (int i = 0; i < 20; ++i) {
gen->SendPacket(kPacketSize);
gen->Sleep(TimeDelta::Millis(5));
}
auto feedback_list = gen->PopFeedback();
ASSERT_GT(feedback_list.size(), 0u);
EXPECT_NEAR(feedback_list[0].LostWithSendInfo().size(),
feedback_list[0].ReceivedWithSendInfo().size(), 2);
}
TEST(FeedbackGeneratorTest, WritesToEventLog) {
size_t kPacketSize = 1000;
auto gen = CreateFeedbackGenerator(FeedbackGenerator::Config());
MemoryLogStorage log_storage;
std::unique_ptr<LogWriterFactoryInterface> log_writer_factory =
log_storage.CreateFactory();
const std::string rtc_event_log_file_name = "eventlog";
gen->event_log().StartLogging(
log_writer_factory->Create(rtc_event_log_file_name),
RtcEventLog::kImmediateOutput);
for (int i = 0; i < 10; ++i) {
gen->SendPacket(kPacketSize);
gen->Sleep(TimeDelta::Millis(50));
}
auto feedback_list = gen->PopFeedback();
ASSERT_GT(feedback_list.size(), 0u);
gen->event_log().StopLogging();
ParsedRtcEventLog parsed_log;
auto it = log_storage.logs().find(rtc_event_log_file_name);
ASSERT_TRUE(it != log_storage.logs().end());
ASSERT_TRUE(parsed_log.ParseString(it->second).ok());
EXPECT_THAT(parsed_log.GetOutgoingPacketInfos(), SizeIs(10));
EXPECT_THAT(parsed_log.GetOutgoingPacketInfos(),
Each(Field(&LoggedPacketInfo::size, Eq(kPacketSize))));
EXPECT_THAT(parsed_log.transport_feedbacks(PacketDirection::kIncomingPacket),
SizeIs(feedback_list.size()));
}
TEST(FeedbackGeneratorWithoutNetworkTest, ReportsFeedbackForSentPackets) {
auto network_emulation_manager =
CreateNetworkEmulationManager({.time_mode = TimeMode::kSimulated});
std::unique_ptr<FeedbackGeneratorWithoutNetwork> gen =
CreateFeedbackGeneratorWithoutNetwork(
FeedbackGeneratorWithoutNetwork::Config(),
*network_emulation_manager);
size_t kTotalPacketSize = 1000;
size_t kOverhead = 40;
for (int i = 0; i < 10; ++i) {
gen->SendPacket(kTotalPacketSize, kOverhead);
network_emulation_manager->time_controller()->AdvanceTime(
TimeDelta::Millis(50));
}
auto feedback_list = gen->PopFeedback();
EXPECT_GT(feedback_list.size(), 0u);
for (const auto& feedback : feedback_list) {
EXPECT_GT(feedback.packet_feedbacks.size(), 0u);
for (const auto& packet : feedback.packet_feedbacks) {
EXPECT_EQ(packet.sent_packet.size.bytes<size_t>(), kTotalPacketSize);
}
}
}
} // namespace webrtc
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