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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 "chrome/browser/ash/power/auto_screen_brightness/metrics_reporter.h"
#include <memory>
#include "base/test/metrics/histogram_tester.h"
#include "base/test/task_environment.h"
#include "chrome/common/pref_names.h"
#include "chromeos/dbus/power/fake_power_manager_client.h"
#include "components/metrics/daily_event.h"
#include "components/prefs/testing_pref_service.h"
#include "testing/gtest/include/gtest/gtest.h"
namespace ash {
namespace power {
namespace auto_screen_brightness {
namespace {
constexpr auto kNoAls = MetricsReporter::DeviceClass::kNoAls;
constexpr auto kSupportedAls = MetricsReporter::DeviceClass::kSupportedAls;
constexpr auto kUnsupportedAls = MetricsReporter::DeviceClass::kUnsupportedAls;
constexpr auto kAtlas = MetricsReporter::DeviceClass::kAtlas;
constexpr auto kEve = MetricsReporter::DeviceClass::kEve;
constexpr auto kNocturne = MetricsReporter::DeviceClass::kNocturne;
constexpr auto kKohaku = MetricsReporter::DeviceClass::kKohaku;
} // namespace
class MetricsReporterTest : public testing::Test {
public:
MetricsReporterTest() = default;
MetricsReporterTest(const MetricsReporterTest&) = delete;
MetricsReporterTest& operator=(const MetricsReporterTest&) = delete;
~MetricsReporterTest() override = default;
void SetUp() override {
chromeos::PowerManagerClient::InitializeFake();
MetricsReporter::RegisterLocalStatePrefs(pref_service_.registry());
}
void TearDown() override {
reporter_.reset();
chromeos::PowerManagerClient::Shutdown();
}
protected:
// Reinitialize |reporter_| without resetting underlying prefs. May be called
// by tests to simulate a Chrome restart.
void ResetReporter(MetricsReporter::DeviceClass device_class) {
reporter_ = std::make_unique<MetricsReporter>(
chromeos::PowerManagerClient::Get(), &pref_service_);
reporter_->SetDeviceClass(device_class);
}
// Notifies |reporter_| that a user adjustment request is received.
void SendOnUserBrightnessChangeRequested() {
reporter_->OnUserBrightnessChangeRequested();
}
// Instructs |reporter_| to report daily metrics for reason |type|.
void TriggerDailyEvent(metrics::DailyEvent::IntervalType type) {
reporter_->ReportDailyMetricsForTesting(type);
}
// Instructs |reporter_| to report daily metrics due to the passage of a day
// and verifies that it reports one sample with each of the passed values.
void TriggerDailyEventAndVerifyHistograms(const std::string& histogram_name,
int expected_count) {
base::HistogramTester histogram_tester;
TriggerDailyEvent(metrics::DailyEvent::IntervalType::DAY_ELAPSED);
histogram_tester.ExpectUniqueSample(histogram_name, expected_count, 1);
}
base::test::TaskEnvironment task_environment_;
TestingPrefServiceSimple pref_service_;
std::unique_ptr<MetricsReporter> reporter_;
};
TEST_F(MetricsReporterTest, CountAndReportEvents) {
// Three without ALS.
ResetReporter(kNoAls);
SendOnUserBrightnessChangeRequested();
SendOnUserBrightnessChangeRequested();
SendOnUserBrightnessChangeRequested();
TriggerDailyEventAndVerifyHistograms(
MetricsReporter::kNoAlsUserAdjustmentName, 3);
// Two with unsupported ALS.
ResetReporter(kUnsupportedAls);
SendOnUserBrightnessChangeRequested();
SendOnUserBrightnessChangeRequested();
TriggerDailyEventAndVerifyHistograms(
MetricsReporter::kUnsupportedAlsUserAdjustmentName, 2);
// Two with supported ALS.
ResetReporter(kSupportedAls);
SendOnUserBrightnessChangeRequested();
SendOnUserBrightnessChangeRequested();
TriggerDailyEventAndVerifyHistograms(
MetricsReporter::kSupportedAlsUserAdjustmentName, 2);
// Two with Atlas.
ResetReporter(kAtlas);
SendOnUserBrightnessChangeRequested();
SendOnUserBrightnessChangeRequested();
TriggerDailyEventAndVerifyHistograms(
MetricsReporter::kAtlasUserAdjustmentName, 2);
// Three with Eve.
ResetReporter(kEve);
SendOnUserBrightnessChangeRequested();
SendOnUserBrightnessChangeRequested();
SendOnUserBrightnessChangeRequested();
TriggerDailyEventAndVerifyHistograms(MetricsReporter::kEveUserAdjustmentName,
3);
// The next day, another two with Eve.
SendOnUserBrightnessChangeRequested();
SendOnUserBrightnessChangeRequested();
TriggerDailyEventAndVerifyHistograms(MetricsReporter::kEveUserAdjustmentName,
2);
// Four with Nocturne.
ResetReporter(kNocturne);
SendOnUserBrightnessChangeRequested();
SendOnUserBrightnessChangeRequested();
SendOnUserBrightnessChangeRequested();
SendOnUserBrightnessChangeRequested();
TriggerDailyEventAndVerifyHistograms(
MetricsReporter::kNocturneUserAdjustmentName, 4);
// Three with Kohaku.
ResetReporter(kKohaku);
SendOnUserBrightnessChangeRequested();
SendOnUserBrightnessChangeRequested();
SendOnUserBrightnessChangeRequested();
TriggerDailyEventAndVerifyHistograms(
MetricsReporter::kKohakuUserAdjustmentName, 3);
}
TEST_F(MetricsReporterTest, LoadInitialCountsFromPrefs) {
// Create a new reporter and check that it loads its initial event counts from
// prefs.
pref_service_.SetInteger(
prefs::kAutoScreenBrightnessMetricsNoAlsUserAdjustmentCount, 1);
pref_service_.SetInteger(
prefs::kAutoScreenBrightnessMetricsSupportedAlsUserAdjustmentCount, 2);
pref_service_.SetInteger(
prefs::kAutoScreenBrightnessMetricsAtlasUserAdjustmentCount, 2);
pref_service_.SetInteger(
prefs::kAutoScreenBrightnessMetricsEveUserAdjustmentCount, 4);
pref_service_.SetInteger(
prefs::kAutoScreenBrightnessMetricsNocturneUserAdjustmentCount, 3);
ResetReporter(kAtlas);
TriggerDailyEventAndVerifyHistograms(
MetricsReporter::kAtlasUserAdjustmentName, 2);
// The previous report should've cleared the prefs, so a new reporter should
// start out at zero.
TriggerDailyEventAndVerifyHistograms(
MetricsReporter::kAtlasUserAdjustmentName, 0);
// Now test Kohaku.
pref_service_.SetInteger(
prefs::kAutoScreenBrightnessMetricsKohakuUserAdjustmentCount, 6);
ResetReporter(kKohaku);
TriggerDailyEventAndVerifyHistograms(
MetricsReporter::kKohakuUserAdjustmentName, 6);
TriggerDailyEventAndVerifyHistograms(
MetricsReporter::kKohakuUserAdjustmentName, 0);
}
TEST_F(MetricsReporterTest, IgnoreDailyEventFirstRun) {
ResetReporter(kAtlas);
// metrics::DailyEvent notifies observers immediately on first run. Histograms
// shouldn't be sent in this case.
base::HistogramTester tester;
TriggerDailyEvent(metrics::DailyEvent::IntervalType::FIRST_RUN);
tester.ExpectTotalCount(MetricsReporter::kNoAlsUserAdjustmentName, 0);
tester.ExpectTotalCount(MetricsReporter::kSupportedAlsUserAdjustmentName, 0);
tester.ExpectTotalCount(MetricsReporter::kUnsupportedAlsUserAdjustmentName,
0);
tester.ExpectTotalCount(MetricsReporter::kAtlasUserAdjustmentName, 0);
tester.ExpectTotalCount(MetricsReporter::kEveUserAdjustmentName, 0);
tester.ExpectTotalCount(MetricsReporter::kNocturneUserAdjustmentName, 0);
tester.ExpectTotalCount(MetricsReporter::kKohakuUserAdjustmentName, 0);
}
TEST_F(MetricsReporterTest, IgnoreDailyEventClockChanged) {
ResetReporter(kKohaku);
SendOnUserBrightnessChangeRequested();
// metrics::DailyEvent notifies observers if it sees that the system clock has
// jumped back. Histograms shouldn't be sent in this case.
base::HistogramTester tester;
TriggerDailyEvent(metrics::DailyEvent::IntervalType::CLOCK_CHANGED);
tester.ExpectTotalCount(MetricsReporter::kNoAlsUserAdjustmentName, 0);
tester.ExpectTotalCount(MetricsReporter::kSupportedAlsUserAdjustmentName, 0);
tester.ExpectTotalCount(MetricsReporter::kUnsupportedAlsUserAdjustmentName,
0);
tester.ExpectTotalCount(MetricsReporter::kAtlasUserAdjustmentName, 0);
tester.ExpectTotalCount(MetricsReporter::kEveUserAdjustmentName, 0);
tester.ExpectTotalCount(MetricsReporter::kNocturneUserAdjustmentName, 0);
tester.ExpectTotalCount(MetricsReporter::kKohakuUserAdjustmentName, 0);
// The existing stats should be cleared when the clock change notification is
// received, so the next report should only contain zeros.
TriggerDailyEventAndVerifyHistograms(
MetricsReporter::kKohakuUserAdjustmentName, 0);
}
} // namespace auto_screen_brightness
} // namespace power
} // namespace ash
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