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/*
* Copyright 2022 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 "api/field_trials.h"
#include "api/transport/field_trial_based_config.h"
#include "system_wrappers/include/field_trial.h"
#include "test/gtest.h"
#if GTEST_HAS_DEATH_TEST && !defined(WEBRTC_ANDROID)
#include "test/testsupport/rtc_expect_death.h"
#endif // GTEST_HAS_DEATH_TEST && !defined(WEBRTC_ANDROID)
namespace webrtc {
TEST(FieldTrials, EmptyString) {
FieldTrials f("");
EXPECT_FALSE(f.IsEnabled("MyCoolTrial"));
EXPECT_FALSE(f.IsDisabled("MyCoolTrial"));
}
TEST(FieldTrials, EnableDisable) {
FieldTrials f("MyCoolTrial/Enabled/MyUncoolTrial/Disabled/");
EXPECT_TRUE(f.IsEnabled("MyCoolTrial"));
EXPECT_TRUE(f.IsDisabled("MyUncoolTrial"));
}
TEST(FieldTrials, SetGlobalStringAndReadFromFieldTrial) {
const char* s = "MyCoolTrial/Enabled/MyUncoolTrial/Disabled/";
webrtc::field_trial::InitFieldTrialsFromString(s);
FieldTrialBasedConfig f;
EXPECT_TRUE(f.IsEnabled("MyCoolTrial"));
EXPECT_TRUE(f.IsDisabled("MyUncoolTrial"));
}
TEST(FieldTrials, SetFieldTrialAndReadFromGlobalString) {
FieldTrials f("MyCoolTrial/Enabled/MyUncoolTrial/Disabled/");
EXPECT_TRUE(webrtc::field_trial::IsEnabled("MyCoolTrial"));
EXPECT_TRUE(webrtc::field_trial::IsDisabled("MyUncoolTrial"));
}
TEST(FieldTrials, RestoresGlobalString) {
const char* s = "SomeString/Enabled/";
webrtc::field_trial::InitFieldTrialsFromString(s);
{
FieldTrials f("SomeOtherString/Enabled/");
EXPECT_EQ(std::string("SomeOtherString/Enabled/"),
webrtc::field_trial::GetFieldTrialString());
}
EXPECT_EQ(s, webrtc::field_trial::GetFieldTrialString());
}
#if GTEST_HAS_DEATH_TEST && !defined(WEBRTC_ANDROID)
TEST(FieldTrials, OnlyOneInstance) {
FieldTrials f("SomeString/Enabled/");
RTC_EXPECT_DEATH(FieldTrials("SomeOtherString/Enabled/").Lookup("Whatever"),
"Only one instance");
}
#endif // GTEST_HAS_DEATH_TEST && !defined(WEBRTC_ANDROID)
TEST(FieldTrials, SequentialInstances) {
{ FieldTrials f("SomeString/Enabled/"); }
{ FieldTrials f("SomeOtherString/Enabled/"); }
}
} // namespace webrtc
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