1 /*
2 * Copyright 2018 The WebRTC project authors. All Rights Reserved.
3 *
4 * Use of this source code is governed by a BSD-style license
5 * that can be found in the LICENSE file in the root of the source
6 * tree. An additional intellectual property rights grant can be found
7 * in the file PATENTS. All contributing project authors may
8 * be found in the AUTHORS file in the root of the source tree.
9 */
10 #include "rtc_base/experiments/field_trial_units.h"
11
12 #include <string>
13
14 #include "absl/types/optional.h"
15 #include "rtc_base/experiments/field_trial_parser.h"
16 #include "test/gtest.h"
17
18 namespace webrtc {
19 namespace {
20 struct DummyExperiment {
21 FieldTrialParameter<DataRate> target_rate =
22 FieldTrialParameter<DataRate>("t", DataRate::KilobitsPerSec(100));
23 FieldTrialParameter<TimeDelta> period =
24 FieldTrialParameter<TimeDelta>("p", TimeDelta::Millis(100));
25 FieldTrialOptional<DataSize> max_buffer =
26 FieldTrialOptional<DataSize>("b", absl::nullopt);
27
DummyExperimentwebrtc::__anonb30e65e00111::DummyExperiment28 explicit DummyExperiment(std::string field_trial) {
29 ParseFieldTrial({&target_rate, &max_buffer, &period}, field_trial);
30 }
31 };
32 } // namespace
33
TEST(FieldTrialParserUnitsTest,FallsBackToDefaults)34 TEST(FieldTrialParserUnitsTest, FallsBackToDefaults) {
35 DummyExperiment exp("");
36 EXPECT_EQ(exp.target_rate.Get(), DataRate::KilobitsPerSec(100));
37 EXPECT_FALSE(exp.max_buffer.GetOptional().has_value());
38 EXPECT_EQ(exp.period.Get(), TimeDelta::Millis(100));
39 }
TEST(FieldTrialParserUnitsTest,ParsesUnitParameters)40 TEST(FieldTrialParserUnitsTest, ParsesUnitParameters) {
41 DummyExperiment exp("t:300kbps,b:5bytes,p:300ms");
42 EXPECT_EQ(exp.target_rate.Get(), DataRate::KilobitsPerSec(300));
43 EXPECT_EQ(*exp.max_buffer.GetOptional(), DataSize::Bytes(5));
44 EXPECT_EQ(exp.period.Get(), TimeDelta::Millis(300));
45 }
TEST(FieldTrialParserUnitsTest,ParsesDefaultUnitParameters)46 TEST(FieldTrialParserUnitsTest, ParsesDefaultUnitParameters) {
47 DummyExperiment exp("t:300,b:5,p:300");
48 EXPECT_EQ(exp.target_rate.Get(), DataRate::KilobitsPerSec(300));
49 EXPECT_EQ(*exp.max_buffer.GetOptional(), DataSize::Bytes(5));
50 EXPECT_EQ(exp.period.Get(), TimeDelta::Millis(300));
51 }
TEST(FieldTrialParserUnitsTest,ParsesInfinityParameter)52 TEST(FieldTrialParserUnitsTest, ParsesInfinityParameter) {
53 DummyExperiment exp("t:inf,p:inf");
54 EXPECT_EQ(exp.target_rate.Get(), DataRate::Infinity());
55 EXPECT_EQ(exp.period.Get(), TimeDelta::PlusInfinity());
56 }
TEST(FieldTrialParserUnitsTest,ParsesOtherUnitParameters)57 TEST(FieldTrialParserUnitsTest, ParsesOtherUnitParameters) {
58 DummyExperiment exp("t:300bps,p:0.3 seconds,b:8 bytes");
59 EXPECT_EQ(exp.target_rate.Get(), DataRate::BitsPerSec(300));
60 EXPECT_EQ(*exp.max_buffer.GetOptional(), DataSize::Bytes(8));
61 EXPECT_EQ(exp.period.Get(), TimeDelta::Millis(300));
62 }
TEST(FieldTrialParserUnitsTest,IgnoresOutOfRange)63 TEST(FieldTrialParserUnitsTest, IgnoresOutOfRange) {
64 FieldTrialConstrained<DataRate> rate("r", DataRate::KilobitsPerSec(30),
65 DataRate::KilobitsPerSec(10),
66 DataRate::KilobitsPerSec(100));
67 FieldTrialConstrained<TimeDelta> delta("d", TimeDelta::Millis(30),
68 TimeDelta::Millis(10),
69 TimeDelta::Millis(100));
70 FieldTrialConstrained<DataSize> size(
71 "s", DataSize::Bytes(30), DataSize::Bytes(10), DataSize::Bytes(100));
72 ParseFieldTrial({&rate, &delta, &size}, "r:0,d:0,s:0");
73 EXPECT_EQ(rate->kbps(), 30);
74 EXPECT_EQ(delta->ms(), 30);
75 EXPECT_EQ(size->bytes(), 30);
76 ParseFieldTrial({&rate, &delta, &size}, "r:300,d:300,s:300");
77 EXPECT_EQ(rate->kbps(), 30);
78 EXPECT_EQ(delta->ms(), 30);
79 EXPECT_EQ(size->bytes(), 30);
80 ParseFieldTrial({&rate, &delta, &size}, "r:50,d:50,s:50");
81 EXPECT_EQ(rate->kbps(), 50);
82 EXPECT_EQ(delta->ms(), 50);
83 EXPECT_EQ(size->bytes(), 50);
84 }
85
86 } // namespace webrtc
87