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// Copyright 2018 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "components/variations/variations_crash_keys.h"
#include <string>
#include "base/command_line.h"
#include "base/metrics/field_trial.h"
#include "base/run_loop.h"
#include "base/test/task_environment.h"
#include "build/build_config.h"
#include "components/crash/core/common/crash_key.h"
#include "components/variations/active_field_trials.h"
#include "components/variations/hashing.h"
#include "components/variations/synthetic_trial_registry.h"
#include "components/variations/synthetic_trials_active_group_id_provider.h"
#include "components/variations/variations_switches.h"
#include "testing/gtest/include/gtest/gtest.h"
namespace variations {
namespace {
std::string GetVariationsCrashKey() {
return crash_reporter::GetCrashKeyValue("variations");
}
std::string GetNumExperimentsCrashKey() {
return crash_reporter::GetCrashKeyValue("num-experiments");
}
std::string GetVariationsSeedVersionCrashKey() {
return crash_reporter::GetCrashKeyValue("variations-seed-version");
}
class VariationsCrashKeysTest : public ::testing::Test {
public:
VariationsCrashKeysTest() {
crash_reporter::ResetCrashKeysForTesting();
crash_reporter::InitializeCrashKeysForTesting();
}
VariationsCrashKeysTest(const VariationsCrashKeysTest&) = delete;
VariationsCrashKeysTest& operator=(const VariationsCrashKeysTest&) = delete;
~VariationsCrashKeysTest() override {
SyntheticTrialsActiveGroupIdProvider::GetInstance()->ResetForTesting();
ClearCrashKeysInstanceForTesting();
crash_reporter::ResetCrashKeysForTesting();
}
private:
base::test::TaskEnvironment task_environment_;
};
} // namespace
TEST_F(VariationsCrashKeysTest, BasicFunctionality) {
SyntheticTrialRegistry registry;
registry.AddObserver(SyntheticTrialsActiveGroupIdProvider::GetInstance());
// Start with 2 trials, one active and one not
base::FieldTrialList::CreateFieldTrial("Trial1", "Group1")->Activate();
base::FieldTrialList::CreateFieldTrial("Trial2", "Group2");
InitCrashKeys();
EXPECT_EQ("1", GetNumExperimentsCrashKey());
EXPECT_EQ("8e7abfb0-c16397b7,", GetVariationsCrashKey());
ExperimentListInfo info = GetExperimentListInfo();
EXPECT_EQ(1, info.num_experiments);
EXPECT_EQ("8e7abfb0-c16397b7,", info.experiment_list);
// Now, active Trial2.
EXPECT_EQ("Group2", base::FieldTrialList::FindFullName("Trial2"));
base::RunLoop().RunUntilIdle();
EXPECT_EQ("2", GetNumExperimentsCrashKey());
EXPECT_EQ("8e7abfb0-c16397b7,277f2a3d-d77354d0,", GetVariationsCrashKey());
info = GetExperimentListInfo();
EXPECT_EQ(2, info.num_experiments);
EXPECT_EQ("8e7abfb0-c16397b7,277f2a3d-d77354d0,", info.experiment_list);
// Add two synthetic trials and confirm that they show up in the list.
SyntheticTrialGroup synth_trial(
"Trial3", "Group3", variations::SyntheticTrialAnnotationMode::kNextLog);
registry.RegisterSyntheticFieldTrial(synth_trial);
EXPECT_EQ("3", GetNumExperimentsCrashKey());
EXPECT_EQ("8e7abfb0-c16397b7,277f2a3d-d77354d0,9f339c9d-746c2ad4,",
GetVariationsCrashKey());
info = GetExperimentListInfo();
EXPECT_EQ(3, info.num_experiments);
EXPECT_EQ("8e7abfb0-c16397b7,277f2a3d-d77354d0,9f339c9d-746c2ad4,",
info.experiment_list);
// Add another regular trial.
base::FieldTrialList::CreateFieldTrial("Trial4", "Group4")->Activate();
base::RunLoop().RunUntilIdle();
EXPECT_EQ("4", GetNumExperimentsCrashKey());
EXPECT_EQ(
"8e7abfb0-c16397b7,277f2a3d-d77354d0,21710f4c-99b90b01,"
"9f339c9d-746c2ad4,",
GetVariationsCrashKey());
info = GetExperimentListInfo();
EXPECT_EQ(4, info.num_experiments);
EXPECT_EQ(
"8e7abfb0-c16397b7,277f2a3d-d77354d0,21710f4c-99b90b01,"
"9f339c9d-746c2ad4,",
info.experiment_list);
// Replace synthetic trial group and add one more.
SyntheticTrialGroup synth_trial2(
"Trial3", "Group3_A", variations::SyntheticTrialAnnotationMode::kNextLog);
registry.RegisterSyntheticFieldTrial(synth_trial2);
SyntheticTrialGroup synth_trial3(
"Trial4", "Group4", variations::SyntheticTrialAnnotationMode::kNextLog);
registry.RegisterSyntheticFieldTrial(synth_trial3);
EXPECT_EQ("5", GetNumExperimentsCrashKey());
EXPECT_EQ(
"8e7abfb0-c16397b7,277f2a3d-d77354d0,21710f4c-99b90b01,"
"9f339c9d-3250dddc,21710f4c-99b90b01,",
GetVariationsCrashKey());
info = GetExperimentListInfo();
EXPECT_EQ(5, info.num_experiments);
EXPECT_EQ(
"8e7abfb0-c16397b7,277f2a3d-d77354d0,21710f4c-99b90b01,"
"9f339c9d-3250dddc,21710f4c-99b90b01,",
info.experiment_list);
}
TEST_F(VariationsCrashKeysTest, SeedVersionFromParsedSeed) {
SetSeedVersion("version-123");
InitCrashKeys();
EXPECT_EQ("version-123", GetVariationsSeedVersionCrashKey());
}
TEST_F(VariationsCrashKeysTest, SeedVersionFromCommandLineSwitch) {
base::CommandLine::ForCurrentProcess()->AppendSwitchASCII(
variations::switches::kVariationsSeedVersion, "version-456");
InitCrashKeys();
EXPECT_EQ("version-456", GetVariationsSeedVersionCrashKey());
}
TEST_F(VariationsCrashKeysTest, OverriddenFieldTrial) {
base::FieldTrialList::CreateFieldTrial("Trial1", "Group1",
/*is_low_anonymity=*/false,
/*is_overridden=*/true)
->Activate();
InitCrashKeys();
// Because the trial is overridden, it has a different group variation ID.
EXPECT_EQ("1", GetNumExperimentsCrashKey());
EXPECT_EQ("2a140065", HashNameAsHexString("Group1_MANUALLY_FORCED"));
EXPECT_EQ("8e7abfb0-2a140065,", GetVariationsCrashKey());
}
} // namespace variations
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