1 files changed, 161 insertions, 0 deletions
diff --git a/third_party/libwebrtc/rtc_base/experiments/min_video_bitrate_experiment_unittest.cc b/third_party/libwebrtc/rtc_base/experiments/min_video_bitrate_experiment_unittest.cc
new file mode 100644
index 0000000000..9792bad61c
--- /dev/null
+++ b/third_party/libwebrtc/rtc_base/experiments/min_video_bitrate_experiment_unittest.cc
@@ -0,0 +1,161 @@
+/*
+ *  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 "rtc_base/experiments/min_video_bitrate_experiment.h"
+
+#include "absl/types/optional.h"
+#include "api/units/data_rate.h"
+#include "api/video/video_codec_type.h"
+#include "test/field_trial.h"
+#include "test/gtest.h"
+
+namespace webrtc {
+namespace {
+
+TEST(GetExperimentalMinVideoBitrateTest,
+     NulloptForAllCodecsIfFieldTrialUndefined) {
+  test::ScopedFieldTrials field_trials("");
+
+  EXPECT_EQ(GetExperimentalMinVideoBitrate(VideoCodecType::kVideoCodecGeneric),
+            absl::nullopt);
+  EXPECT_EQ(GetExperimentalMinVideoBitrate(VideoCodecType::kVideoCodecVP8),
+            absl::nullopt);
+  EXPECT_EQ(GetExperimentalMinVideoBitrate(VideoCodecType::kVideoCodecVP9),
+            absl::nullopt);
+  EXPECT_EQ(GetExperimentalMinVideoBitrate(VideoCodecType::kVideoCodecH264),
+            absl::nullopt);
+  EXPECT_EQ(
+      GetExperimentalMinVideoBitrate(VideoCodecType::kVideoCodecMultiplex),
+      absl::nullopt);
+}
+
+TEST(GetExperimentalMinVideoBitrateTest,
+     NulloptForAllCodecsIfFieldTrialDisabled) {
+  test::ScopedFieldTrials field_trials(
+      "WebRTC-Video-MinVideoBitrate/Disabled,br:123kbps/");
+
+  EXPECT_EQ(GetExperimentalMinVideoBitrate(VideoCodecType::kVideoCodecGeneric),
+            absl::nullopt);
+  EXPECT_EQ(GetExperimentalMinVideoBitrate(VideoCodecType::kVideoCodecVP8),
+            absl::nullopt);
+  EXPECT_EQ(GetExperimentalMinVideoBitrate(VideoCodecType::kVideoCodecVP9),
+            absl::nullopt);
+  EXPECT_EQ(GetExperimentalMinVideoBitrate(VideoCodecType::kVideoCodecH264),
+            absl::nullopt);
+  EXPECT_EQ(
+      GetExperimentalMinVideoBitrate(VideoCodecType::kVideoCodecMultiplex),
+      absl::nullopt);
+}
+
+TEST(GetExperimentalMinVideoBitrateTest, BrForAllCodecsIfDefined) {
+  test::ScopedFieldTrials field_trials(
+      "WebRTC-Video-MinVideoBitrate/Enabled,br:123kbps/");
+
+  EXPECT_EQ(GetExperimentalMinVideoBitrate(VideoCodecType::kVideoCodecGeneric),
+            absl::make_optional(DataRate::KilobitsPerSec(123)));
+  EXPECT_EQ(GetExperimentalMinVideoBitrate(VideoCodecType::kVideoCodecVP8),
+            absl::make_optional(DataRate::KilobitsPerSec(123)));
+  EXPECT_EQ(GetExperimentalMinVideoBitrate(VideoCodecType::kVideoCodecVP9),
+            absl::make_optional(DataRate::KilobitsPerSec(123)));
+  EXPECT_EQ(GetExperimentalMinVideoBitrate(VideoCodecType::kVideoCodecH264),
+            absl::make_optional(DataRate::KilobitsPerSec(123)));
+  EXPECT_EQ(
+      GetExperimentalMinVideoBitrate(VideoCodecType::kVideoCodecMultiplex),
+      absl::make_optional(DataRate::KilobitsPerSec(123)));
+}
+
+TEST(GetExperimentalMinVideoBitrateTest, BrTrumpsSpecificCodecConfigs) {
+  test::ScopedFieldTrials field_trials(
+      "WebRTC-Video-MinVideoBitrate/"
+      "Enabled,br:123kbps,vp8_br:100kbps,vp9_br:200kbps,h264_br:300kbps/");
+
+  EXPECT_EQ(GetExperimentalMinVideoBitrate(VideoCodecType::kVideoCodecGeneric),
+            absl::make_optional(DataRate::KilobitsPerSec(123)));
+  EXPECT_EQ(GetExperimentalMinVideoBitrate(VideoCodecType::kVideoCodecVP8),
+            absl::make_optional(DataRate::KilobitsPerSec(123)));
+  EXPECT_EQ(GetExperimentalMinVideoBitrate(VideoCodecType::kVideoCodecVP9),
+            absl::make_optional(DataRate::KilobitsPerSec(123)));
+  EXPECT_EQ(GetExperimentalMinVideoBitrate(VideoCodecType::kVideoCodecH264),
+            absl::make_optional(DataRate::KilobitsPerSec(123)));
+  EXPECT_EQ(
+      GetExperimentalMinVideoBitrate(VideoCodecType::kVideoCodecMultiplex),
+      absl::make_optional(DataRate::KilobitsPerSec(123)));
+}
+
+TEST(GetExperimentalMinVideoBitrateTest,
+     SpecificCodecConfigsIgnoredIfExpDisabled) {
+  test::ScopedFieldTrials field_trials(
+      "WebRTC-Video-MinVideoBitrate/"
+      "Disabled,vp8_br:100kbps,vp9_br:200kbps,h264_br:300kbps/");
+
+  EXPECT_EQ(GetExperimentalMinVideoBitrate(VideoCodecType::kVideoCodecGeneric),
+            absl::nullopt);
+  EXPECT_EQ(GetExperimentalMinVideoBitrate(VideoCodecType::kVideoCodecVP8),
+            absl::nullopt);
+  EXPECT_EQ(GetExperimentalMinVideoBitrate(VideoCodecType::kVideoCodecVP9),
+            absl::nullopt);
+  EXPECT_EQ(GetExperimentalMinVideoBitrate(VideoCodecType::kVideoCodecH264),
+            absl::nullopt);
+  EXPECT_EQ(
+      GetExperimentalMinVideoBitrate(VideoCodecType::kVideoCodecMultiplex),
+      absl::nullopt);
+}
+
+TEST(GetExperimentalMinVideoBitrateTest, SpecificCodecConfigsUsedIfExpEnabled) {
+  test::ScopedFieldTrials field_trials(
+      "WebRTC-Video-MinVideoBitrate/"
+      "Enabled,vp8_br:100kbps,vp9_br:200kbps,h264_br:300kbps/");
+
+  EXPECT_EQ(GetExperimentalMinVideoBitrate(VideoCodecType::kVideoCodecGeneric),
+            absl::nullopt);
+  EXPECT_EQ(GetExperimentalMinVideoBitrate(VideoCodecType::kVideoCodecVP8),
+            absl::make_optional(DataRate::KilobitsPerSec(100)));
+  EXPECT_EQ(GetExperimentalMinVideoBitrate(VideoCodecType::kVideoCodecVP9),
+            absl::make_optional(DataRate::KilobitsPerSec(200)));
+  EXPECT_EQ(GetExperimentalMinVideoBitrate(VideoCodecType::kVideoCodecH264),
+            absl::make_optional(DataRate::KilobitsPerSec(300)));
+  EXPECT_EQ(
+      GetExperimentalMinVideoBitrate(VideoCodecType::kVideoCodecMultiplex),
+      absl::nullopt);
+}
+
+TEST(GetExperimentalMinVideoBitrateTest,
+     Vp8BitrateValueTakenFromFallbackIfAvailable) {
+  test::ScopedFieldTrials field_trials(
+      "WebRTC-Video-MinVideoBitrate/"
+      "Enabled,vp8_br:100kbps,vp9_br:200kbps,h264_br:300kbps/"
+      "WebRTC-VP8-Forced-Fallback-Encoder-v2/"
+      "Enabled-444444,555555,666666/");
+
+  EXPECT_EQ(GetExperimentalMinVideoBitrate(VideoCodecType::kVideoCodecVP8),
+            absl::make_optional(DataRate::BitsPerSec(666666)));
+}
+
+TEST(GetExperimentalMinVideoBitrateTest,
+     NonVp8BitrateValuesTakenFromMinVideoBitrate) {
+  test::ScopedFieldTrials field_trials(
+      "WebRTC-Video-MinVideoBitrate/"
+      "Enabled,vp8_br:100kbps,vp9_br:200kbps,h264_br:300kbps/"
+      "WebRTC-VP8-Forced-Fallback-Encoder-v2/"
+      "Enabled-444444,555555,666666/");
+
+  EXPECT_EQ(GetExperimentalMinVideoBitrate(VideoCodecType::kVideoCodecGeneric),
+            absl::nullopt);
+  EXPECT_EQ(GetExperimentalMinVideoBitrate(VideoCodecType::kVideoCodecVP9),
+            absl::make_optional(DataRate::KilobitsPerSec(200)));
+  EXPECT_EQ(GetExperimentalMinVideoBitrate(VideoCodecType::kVideoCodecH264),
+            absl::make_optional(DataRate::KilobitsPerSec(300)));
+  EXPECT_EQ(
+      GetExperimentalMinVideoBitrate(VideoCodecType::kVideoCodecMultiplex),
+      absl::nullopt);
+}
+
+}  // namespace
+}  // namespace webrtc