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// Copyright 2023 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "content/child/child_process_synthetic_trial_syncer.h"
#include "base/test/task_environment.h"
#include "components/variations/active_field_trials.h"
#include "components/variations/variations_crash_keys.h"
#include "testing/gtest/include/gtest/gtest.h"
namespace content {
namespace {
std::vector<mojom::SyntheticTrialGroupPtr> Create(
std::vector<std::pair<std::string, std::string>> trial_names) {
std::vector<mojom::SyntheticTrialGroupPtr> groups;
for (auto& it : trial_names) {
groups.push_back(mojom::SyntheticTrialGroup::New(it.first, it.second));
}
return groups;
}
} // namespace
class ChildProcessSyntheticTrialSyncerTest : public ::testing::Test {
public:
void SetUp() override {
variations::InitCrashKeys();
syncer_ = ChildProcessSyntheticTrialSyncer::CreateInstanceForTesting();
}
void TearDown() override {
syncer_.reset();
variations::ClearCrashKeysInstanceForTesting();
}
void AddOrUpdateSyntheticTrialGroups(
std::vector<std::pair<std::string, std::string>> groups) {
syncer_->AddOrUpdateSyntheticTrialGroups(Create(groups));
}
void RemoveSyntheticTrialGroups(
std::vector<std::pair<std::string, std::string>> groups) {
syncer_->RemoveSyntheticTrialGroups(Create(groups));
}
std::string GetExperimentHash(std::string trial_name,
std::string group_name) {
return variations::ActiveGroupToString(
variations::MakeActiveGroupId(trial_name, group_name));
}
private:
std::unique_ptr<ChildProcessSyntheticTrialSyncer> syncer_;
base::test::TaskEnvironment task_environment_;
};
TEST_F(ChildProcessSyntheticTrialSyncerTest, Basic) {
AddOrUpdateSyntheticTrialGroups({{"A", "G1"}, {"B", "G2"}});
auto info = variations::GetExperimentListInfo();
EXPECT_EQ(GetExperimentHash("A", "G1") + GetExperimentHash("B", "G2"),
info.experiment_list);
AddOrUpdateSyntheticTrialGroups({{"C", "G3"}});
info = variations::GetExperimentListInfo();
EXPECT_EQ(3, info.num_experiments);
EXPECT_EQ(GetExperimentHash("A", "G1") + GetExperimentHash("B", "G2") +
GetExperimentHash("C", "G3"),
info.experiment_list);
AddOrUpdateSyntheticTrialGroups({{"A", "G4"}});
info = variations::GetExperimentListInfo();
EXPECT_EQ(3, info.num_experiments);
EXPECT_EQ(GetExperimentHash("A", "G4") + GetExperimentHash("B", "G2") +
GetExperimentHash("C", "G3"),
info.experiment_list);
RemoveSyntheticTrialGroups({{"B", "G2"}});
info = variations::GetExperimentListInfo();
EXPECT_EQ(2, info.num_experiments);
EXPECT_EQ(GetExperimentHash("A", "G4") + GetExperimentHash("C", "G3"),
info.experiment_list);
RemoveSyntheticTrialGroups({{"C", "G3"}, {"A", "G4"}});
info = variations::GetExperimentListInfo();
EXPECT_EQ(0, info.num_experiments);
}
TEST_F(ChildProcessSyntheticTrialSyncerTest, AddSameTrial) {
AddOrUpdateSyntheticTrialGroups({{"A", "G1"}, {"A", "G2"}, {"A", "G3"}});
auto info = variations::GetExperimentListInfo();
EXPECT_EQ(1, info.num_experiments);
EXPECT_EQ(GetExperimentHash("A", "G3"), info.experiment_list);
}
TEST_F(ChildProcessSyntheticTrialSyncerTest, RemoveFromEmpty) {
RemoveSyntheticTrialGroups({{"B", "G2"}, {"C", "G1"}});
auto info = variations::GetExperimentListInfo();
EXPECT_EQ(0, info.num_experiments);
}
TEST_F(ChildProcessSyntheticTrialSyncerTest, RemoveWrongTrialGroup) {
AddOrUpdateSyntheticTrialGroups({{"A", "G1"}, {"B", "G2"}});
auto info = variations::GetExperimentListInfo();
EXPECT_EQ(2, info.num_experiments);
EXPECT_EQ(GetExperimentHash("A", "G1") + GetExperimentHash("B", "G2"),
info.experiment_list);
RemoveSyntheticTrialGroups({{"B", "G4"}});
EXPECT_EQ(2, info.num_experiments);
EXPECT_EQ(GetExperimentHash("A", "G1") + GetExperimentHash("B", "G2"),
info.experiment_list);
}
} // namespace content
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