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/*
* Copyright 2018 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/field_trial_units.h"
#include <string>
#include "absl/strings/string_view.h"
#include "absl/types/optional.h"
#include "rtc_base/experiments/field_trial_parser.h"
#include "test/gtest.h"
namespace webrtc {
namespace {
struct DummyExperiment {
FieldTrialParameter<DataRate> target_rate =
FieldTrialParameter<DataRate>("t", DataRate::KilobitsPerSec(100));
FieldTrialParameter<TimeDelta> period =
FieldTrialParameter<TimeDelta>("p", TimeDelta::Millis(100));
FieldTrialOptional<DataSize> max_buffer =
FieldTrialOptional<DataSize>("b", absl::nullopt);
explicit DummyExperiment(absl::string_view field_trial) {
ParseFieldTrial({&target_rate, &max_buffer, &period}, field_trial);
}
};
} // namespace
TEST(FieldTrialParserUnitsTest, FallsBackToDefaults) {
DummyExperiment exp("");
EXPECT_EQ(exp.target_rate.Get(), DataRate::KilobitsPerSec(100));
EXPECT_FALSE(exp.max_buffer.GetOptional().has_value());
EXPECT_EQ(exp.period.Get(), TimeDelta::Millis(100));
}
TEST(FieldTrialParserUnitsTest, ParsesUnitParameters) {
DummyExperiment exp("t:300kbps,b:5bytes,p:300ms");
EXPECT_EQ(exp.target_rate.Get(), DataRate::KilobitsPerSec(300));
EXPECT_EQ(*exp.max_buffer.GetOptional(), DataSize::Bytes(5));
EXPECT_EQ(exp.period.Get(), TimeDelta::Millis(300));
}
TEST(FieldTrialParserUnitsTest, ParsesDefaultUnitParameters) {
DummyExperiment exp("t:300,b:5,p:300");
EXPECT_EQ(exp.target_rate.Get(), DataRate::KilobitsPerSec(300));
EXPECT_EQ(*exp.max_buffer.GetOptional(), DataSize::Bytes(5));
EXPECT_EQ(exp.period.Get(), TimeDelta::Millis(300));
}
TEST(FieldTrialParserUnitsTest, ParsesInfinityParameter) {
DummyExperiment exp("t:inf,p:inf");
EXPECT_EQ(exp.target_rate.Get(), DataRate::Infinity());
EXPECT_EQ(exp.period.Get(), TimeDelta::PlusInfinity());
}
TEST(FieldTrialParserUnitsTest, ParsesOtherUnitParameters) {
DummyExperiment exp("t:300bps,p:0.3 seconds,b:8 bytes");
EXPECT_EQ(exp.target_rate.Get(), DataRate::BitsPerSec(300));
EXPECT_EQ(*exp.max_buffer.GetOptional(), DataSize::Bytes(8));
EXPECT_EQ(exp.period.Get(), TimeDelta::Millis(300));
}
TEST(FieldTrialParserUnitsTest, IgnoresOutOfRange) {
FieldTrialConstrained<DataRate> rate("r", DataRate::KilobitsPerSec(30),
DataRate::KilobitsPerSec(10),
DataRate::KilobitsPerSec(100));
FieldTrialConstrained<TimeDelta> delta("d", TimeDelta::Millis(30),
TimeDelta::Millis(10),
TimeDelta::Millis(100));
FieldTrialConstrained<DataSize> size(
"s", DataSize::Bytes(30), DataSize::Bytes(10), DataSize::Bytes(100));
ParseFieldTrial({&rate, &delta, &size}, "r:0,d:0,s:0");
EXPECT_EQ(rate->kbps(), 30);
EXPECT_EQ(delta->ms(), 30);
EXPECT_EQ(size->bytes(), 30);
ParseFieldTrial({&rate, &delta, &size}, "r:300,d:300,s:300");
EXPECT_EQ(rate->kbps(), 30);
EXPECT_EQ(delta->ms(), 30);
EXPECT_EQ(size->bytes(), 30);
ParseFieldTrial({&rate, &delta, &size}, "r:50,d:50,s:50");
EXPECT_EQ(rate->kbps(), 50);
EXPECT_EQ(delta->ms(), 50);
EXPECT_EQ(size->bytes(), 50);
}
} // namespace webrtc
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