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/*
* Copyright (c) 2014 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 "video/report_block_stats.h"
#include "test/gtest.h"
namespace webrtc {
namespace {
constexpr uint32_t kSsrc1 = 123;
constexpr uint32_t kSsrc2 = 234;
TEST(ReportBlockStatsTest, StoreAndGetFractionLost) {
ReportBlockStats stats;
EXPECT_EQ(-1, stats.FractionLostInPercent());
// First report.
stats.Store(kSsrc1, /*packets_lost=*/10,
/*extended_highest_sequence_number=*/24'000);
EXPECT_EQ(-1, stats.FractionLostInPercent());
// fl: 100 * (15-10) / (24100-24000) = 5%
stats.Store(kSsrc1, /*packets_lost=*/15,
/*extended_highest_sequence_number=*/24'100);
EXPECT_EQ(5, stats.FractionLostInPercent());
// fl: 100 * (50-10) / (24200-24000) = 20%
stats.Store(kSsrc1, /*packets_lost=*/50,
/*extended_highest_sequence_number=*/24'200);
EXPECT_EQ(20, stats.FractionLostInPercent());
}
TEST(ReportBlockStatsTest, StoreAndGetFractionLost_TwoSsrcs) {
ReportBlockStats stats;
EXPECT_EQ(-1, stats.FractionLostInPercent());
// First report.
stats.Store(kSsrc1, /*packets_lost=*/10,
/*extended_highest_sequence_number=*/24'000);
EXPECT_EQ(-1, stats.FractionLostInPercent());
// fl: 100 * (15-10) / (24100-24000) = 5%
stats.Store(kSsrc1, /*packets_lost=*/15,
/*extended_highest_sequence_number=*/24'100);
EXPECT_EQ(5, stats.FractionLostInPercent());
// First report, kSsrc2.
stats.Store(kSsrc2, /*packets_lost=*/111,
/*extended_highest_sequence_number=*/8'500);
EXPECT_EQ(5, stats.FractionLostInPercent());
// fl: 100 * ((15-10) + (136-111)) / ((24100-24000) + (8800-8500)) = 7%
stats.Store(kSsrc2, /*packets_lost=*/136,
/*extended_highest_sequence_number=*/8'800);
EXPECT_EQ(7, stats.FractionLostInPercent());
}
} // namespace
} // namespace webrtc
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