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Jonas Oreland128c4dc2022-03-30 05:57:481/*
2 * Copyright 2022 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
11#include "api/field_trials.h"
12
Emil Lundmark5fbe42a2022-06-30 14:50:5513#include <memory>
14
Jonas Oreland128c4dc2022-03-30 05:57:4815#include "api/transport/field_trial_based_config.h"
Emil Lundmark6bf20cc2022-09-21 13:20:2216#include "rtc_base/containers/flat_set.h"
Jonas Oreland128c4dc2022-03-30 05:57:4817#include "system_wrappers/include/field_trial.h"
Emil Lundmark2e3069b2022-12-01 15:20:3718#include "test/field_trial.h"
Emil Lundmark5fbe42a2022-06-30 14:50:5519#include "test/gmock.h"
Jonas Oreland128c4dc2022-03-30 05:57:4820#include "test/gtest.h"
21
22#if GTEST_HAS_DEATH_TEST && !defined(WEBRTC_ANDROID)
23#include "test/testsupport/rtc_expect_death.h"
24#endif // GTEST_HAS_DEATH_TEST && !defined(WEBRTC_ANDROID)
25
26namespace webrtc {
Emil Lundmark5fbe42a2022-06-30 14:50:5527namespace {
Jonas Oreland128c4dc2022-03-30 05:57:4828
Emil Lundmark5fbe42a2022-06-30 14:50:5529using ::testing::NotNull;
Emil Lundmark2d7a3e72022-11-25 09:19:1230using ::webrtc::field_trial::FieldTrialsAllowedInScopeForTesting;
Emil Lundmark2e3069b2022-12-01 15:20:3731using ::webrtc::test::ScopedFieldTrials;
Emil Lundmark5fbe42a2022-06-30 14:50:5532
Emil Lundmark6bf20cc2022-09-21 13:20:2233TEST(FieldTrialsTest, EmptyStringHasNoEffect) {
Emil Lundmark2d7a3e72022-11-25 09:19:1234 FieldTrialsAllowedInScopeForTesting k({"MyCoolTrial"});
Jonas Oreland128c4dc2022-03-30 05:57:4835 FieldTrials f("");
Emil Lundmark1c8103d2022-09-21 13:20:2236 f.RegisterKeysForTesting({"MyCoolTrial"});
37
Jonas Oreland128c4dc2022-03-30 05:57:4838 EXPECT_FALSE(f.IsEnabled("MyCoolTrial"));
39 EXPECT_FALSE(f.IsDisabled("MyCoolTrial"));
40}
41
Emil Lundmark6bf20cc2022-09-21 13:20:2242TEST(FieldTrialsTest, EnabledDisabledMustBeFirstInValue) {
Emil Lundmark5fbe42a2022-06-30 14:50:5543 FieldTrials f(
44 "MyCoolTrial/EnabledFoo/"
45 "MyUncoolTrial/DisabledBar/"
46 "AnotherTrial/BazEnabled/");
Emil Lundmark1c8103d2022-09-21 13:20:2247 f.RegisterKeysForTesting({"MyCoolTrial", "MyUncoolTrial", "AnotherTrial"});
48
Jonas Oreland128c4dc2022-03-30 05:57:4849 EXPECT_TRUE(f.IsEnabled("MyCoolTrial"));
50 EXPECT_TRUE(f.IsDisabled("MyUncoolTrial"));
Emil Lundmark5fbe42a2022-06-30 14:50:5551 EXPECT_FALSE(f.IsEnabled("AnotherTrial"));
Jonas Oreland128c4dc2022-03-30 05:57:4852}
53
Emil Lundmark6bf20cc2022-09-21 13:20:2254TEST(FieldTrialsTest, FieldTrialsDoesNotReadGlobalString) {
Emil Lundmark2d7a3e72022-11-25 09:19:1255 FieldTrialsAllowedInScopeForTesting k({"MyCoolTrial", "MyUncoolTrial"});
Emil Lundmark2e3069b2022-12-01 15:20:3756 ScopedFieldTrials g("MyCoolTrial/Enabled/MyUncoolTrial/Disabled/");
Emil Lundmark5fbe42a2022-06-30 14:50:5557 FieldTrials f("");
Emil Lundmark1c8103d2022-09-21 13:20:2258 f.RegisterKeysForTesting({"MyCoolTrial", "MyUncoolTrial"});
59
Emil Lundmark5fbe42a2022-06-30 14:50:5560 EXPECT_FALSE(f.IsEnabled("MyCoolTrial"));
61 EXPECT_FALSE(f.IsDisabled("MyUncoolTrial"));
Jonas Oreland128c4dc2022-03-30 05:57:4862}
63
Emil Lundmark6bf20cc2022-09-21 13:20:2264TEST(FieldTrialsTest, FieldTrialsWritesGlobalString) {
Emil Lundmark2d7a3e72022-11-25 09:19:1265 FieldTrialsAllowedInScopeForTesting k({"MyCoolTrial", "MyUncoolTrial"});
Jonas Oreland128c4dc2022-03-30 05:57:4866 FieldTrials f("MyCoolTrial/Enabled/MyUncoolTrial/Disabled/");
67 EXPECT_TRUE(webrtc::field_trial::IsEnabled("MyCoolTrial"));
68 EXPECT_TRUE(webrtc::field_trial::IsDisabled("MyUncoolTrial"));
69}
70
Emil Lundmark6bf20cc2022-09-21 13:20:2271TEST(FieldTrialsTest, FieldTrialsRestoresGlobalStringAfterDestruction) {
Emil Lundmark5fbe42a2022-06-30 14:50:5572 static constexpr char s[] = "SomeString/Enabled/";
Emil Lundmark2e3069b2022-12-01 15:20:3773 ScopedFieldTrials g(s);
Jonas Oreland128c4dc2022-03-30 05:57:4874 {
75 FieldTrials f("SomeOtherString/Enabled/");
Emil Lundmark5fbe42a2022-06-30 14:50:5576 EXPECT_STREQ(webrtc::field_trial::GetFieldTrialString(),
77 "SomeOtherString/Enabled/");
Jonas Oreland128c4dc2022-03-30 05:57:4878 }
Emil Lundmark5fbe42a2022-06-30 14:50:5579 EXPECT_STREQ(webrtc::field_trial::GetFieldTrialString(), s);
Jonas Oreland128c4dc2022-03-30 05:57:4880}
81
82#if GTEST_HAS_DEATH_TEST && !defined(WEBRTC_ANDROID)
Emil Lundmark6bf20cc2022-09-21 13:20:2283TEST(FieldTrialsTest, FieldTrialsDoesNotSupportSimultaneousInstances) {
Jonas Oreland128c4dc2022-03-30 05:57:4884 FieldTrials f("SomeString/Enabled/");
85 RTC_EXPECT_DEATH(FieldTrials("SomeOtherString/Enabled/").Lookup("Whatever"),
86 "Only one instance");
87}
88#endif // GTEST_HAS_DEATH_TEST && !defined(WEBRTC_ANDROID)
89
Emil Lundmark6bf20cc2022-09-21 13:20:2290TEST(FieldTrialsTest, FieldTrialsSupportsSeparateInstances) {
Jonas Oreland128c4dc2022-03-30 05:57:4891 { FieldTrials f("SomeString/Enabled/"); }
92 { FieldTrials f("SomeOtherString/Enabled/"); }
93}
94
Emil Lundmark6bf20cc2022-09-21 13:20:2295TEST(FieldTrialsTest, NonGlobalFieldTrialsInstanceDoesNotModifyGlobalString) {
Emil Lundmark2d7a3e72022-11-25 09:19:1296 FieldTrialsAllowedInScopeForTesting k({"SomeString"});
Emil Lundmark5fbe42a2022-06-30 14:50:5597 std::unique_ptr<FieldTrials> f =
98 FieldTrials::CreateNoGlobal("SomeString/Enabled/");
99 ASSERT_THAT(f, NotNull());
Emil Lundmark1c8103d2022-09-21 13:20:22100 f->RegisterKeysForTesting({"SomeString"});
101
Emil Lundmark5fbe42a2022-06-30 14:50:55102 EXPECT_TRUE(f->IsEnabled("SomeString"));
103 EXPECT_FALSE(webrtc::field_trial::IsEnabled("SomeString"));
Jonas Orelandf096e742022-05-31 09:15:19104}
105
Emil Lundmark6bf20cc2022-09-21 13:20:22106TEST(FieldTrialsTest, NonGlobalFieldTrialsSupportSimultaneousInstances) {
Emil Lundmark5fbe42a2022-06-30 14:50:55107 std::unique_ptr<FieldTrials> f1 =
108 FieldTrials::CreateNoGlobal("SomeString/Enabled/");
109 std::unique_ptr<FieldTrials> f2 =
110 FieldTrials::CreateNoGlobal("SomeOtherString/Enabled/");
111 ASSERT_THAT(f1, NotNull());
112 ASSERT_THAT(f2, NotNull());
Emil Lundmark1c8103d2022-09-21 13:20:22113 f1->RegisterKeysForTesting({"SomeString", "SomeOtherString"});
114 f2->RegisterKeysForTesting({"SomeString", "SomeOtherString"});
Jonas Orelandf096e742022-05-31 09:15:19115
116 EXPECT_TRUE(f1->IsEnabled("SomeString"));
117 EXPECT_FALSE(f1->IsEnabled("SomeOtherString"));
118
119 EXPECT_FALSE(f2->IsEnabled("SomeString"));
120 EXPECT_TRUE(f2->IsEnabled("SomeOtherString"));
121}
122
Emil Lundmark6bf20cc2022-09-21 13:20:22123TEST(FieldTrialsTest, GlobalAndNonGlobalFieldTrialsAreDisjoint) {
Emil Lundmark2d7a3e72022-11-25 09:19:12124 FieldTrialsAllowedInScopeForTesting k({"SomeString", "SomeOtherString"});
Emil Lundmark5fbe42a2022-06-30 14:50:55125 FieldTrials f1("SomeString/Enabled/");
126 std::unique_ptr<FieldTrials> f2 =
127 FieldTrials::CreateNoGlobal("SomeOtherString/Enabled/");
128 ASSERT_THAT(f2, NotNull());
Emil Lundmark1c8103d2022-09-21 13:20:22129 f1.RegisterKeysForTesting({"SomeString", "SomeOtherString"});
130 f2->RegisterKeysForTesting({"SomeString", "SomeOtherString"});
Jonas Orelandf096e742022-05-31 09:15:19131
Emil Lundmark5fbe42a2022-06-30 14:50:55132 EXPECT_TRUE(f1.IsEnabled("SomeString"));
133 EXPECT_FALSE(f1.IsEnabled("SomeOtherString"));
Jonas Orelandf096e742022-05-31 09:15:19134
Emil Lundmark5fbe42a2022-06-30 14:50:55135 EXPECT_FALSE(f2->IsEnabled("SomeString"));
136 EXPECT_TRUE(f2->IsEnabled("SomeOtherString"));
Jonas Orelandf096e742022-05-31 09:15:19137}
138
Emil Lundmark6bf20cc2022-09-21 13:20:22139TEST(FieldTrialsTest, FieldTrialBasedConfigReadsGlobalString) {
Emil Lundmark2d7a3e72022-11-25 09:19:12140 FieldTrialsAllowedInScopeForTesting k({"MyCoolTrial", "MyUncoolTrial"});
Emil Lundmark2e3069b2022-12-01 15:20:37141 ScopedFieldTrials g("MyCoolTrial/Enabled/MyUncoolTrial/Disabled/");
Emil Lundmark5fbe42a2022-06-30 14:50:55142 FieldTrialBasedConfig f;
Emil Lundmark1c8103d2022-09-21 13:20:22143 f.RegisterKeysForTesting({"MyCoolTrial", "MyUncoolTrial"});
144
Emil Lundmark5fbe42a2022-06-30 14:50:55145 EXPECT_TRUE(f.IsEnabled("MyCoolTrial"));
146 EXPECT_TRUE(f.IsDisabled("MyUncoolTrial"));
147}
148
149} // namespace
Jonas Oreland128c4dc2022-03-30 05:57:48150} // namespace webrtc