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// Copyright 2021 The Chromium Authors. All rights reserved.
// 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_chromeos.h"
#include "base/base_paths.h"
#include "base/files/file_util.h"
#include "base/files/scoped_temp_dir.h"
#include "base/metrics/field_trial.h"
#include "base/run_loop.h"
#include "base/test/scoped_path_override.h"
#include "base/test/task_environment.h"
#include "components/crash/core/common/crash_key.h"
#include "components/variations/synthetic_trials_active_group_id_provider.h"
#include "components/variations/variations_crash_keys.h"
#include "testing/gtest/include/gtest/gtest.h"
namespace variations {
namespace {
class VariationsCrashKeysChromeOsTest : public ::testing::Test {
public:
VariationsCrashKeysChromeOsTest() {
crash_reporter::ResetCrashKeysForTesting();
crash_reporter::InitializeCrashKeysForTesting();
}
VariationsCrashKeysChromeOsTest(const VariationsCrashKeysChromeOsTest&) =
delete;
VariationsCrashKeysChromeOsTest& operator=(
const VariationsCrashKeysChromeOsTest&) = delete;
~VariationsCrashKeysChromeOsTest() override {
SyntheticTrialsActiveGroupIdProvider::GetInstance()->ResetForTesting();
ClearCrashKeysInstanceForTesting();
crash_reporter::ResetCrashKeysForTesting();
}
protected:
base::test::TaskEnvironment task_environment_;
};
TEST_F(VariationsCrashKeysChromeOsTest, WritesVariationsList) {
// Override the homedir so that the class writes to a known location we can
// check.
base::ScopedTempDir dir;
ASSERT_TRUE(dir.CreateUniqueTempDir());
const base::FilePath& home_path = dir.GetPath();
base::ScopedPathOverride home_override(base::DIR_HOME, home_path);
base::FilePath variations_list_path =
home_path.Append(".variations-list.txt");
// Start with 2 trials, one active and one not
base::FieldTrialList::CreateFieldTrial("Trial1", "Group1")->group();
base::FieldTrialList::CreateFieldTrial("Trial2", "Group2");
InitCrashKeys();
base::RunLoop().RunUntilIdle();
task_environment_.RunUntilIdle();
ExperimentListInfo info = GetExperimentListInfo();
EXPECT_EQ(1, info.num_experiments);
EXPECT_EQ("8e7abfb0-c16397b7,", info.experiment_list);
std::string contents;
ASSERT_TRUE(base::ReadFileToString(variations_list_path, &contents));
EXPECT_EQ(contents,
"num-experiments=1\n"
"variations=8e7abfb0-c16397b7,\n");
// Now, activate Trial2.
EXPECT_EQ("Group2", base::FieldTrialList::FindFullName("Trial2"));
base::RunLoop().RunUntilIdle();
task_environment_.RunUntilIdle();
info = GetExperimentListInfo();
EXPECT_EQ(2, info.num_experiments);
EXPECT_EQ("8e7abfb0-c16397b7,277f2a3d-d77354d0,", info.experiment_list);
ASSERT_TRUE(base::ReadFileToString(variations_list_path, &contents));
EXPECT_EQ(contents,
"num-experiments=2\n"
"variations=8e7abfb0-c16397b7,277f2a3d-d77354d0,\n");
}
} // namespace
} // namespace variations
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