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// Copyright 2022 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/performance_manager/power/battery_level_provider_chromeos.h"
#include "base/power_monitor/battery_state_sampler.h"
#include "base/scoped_observation.h"
#include "base/test/gtest_util.h"
#include "chromeos/dbus/power/fake_power_manager_client.h"
#include "components/performance_manager/power/dbus_power_manager_sampling_event_source.h"
#include "testing/gtest/include/gtest/gtest.h"
namespace performance_manager::power {
namespace {
class TestBatteryStateSamplerObserver
: public base::BatteryStateSampler::Observer {
public:
// base::BatteryStateSampler::Observer:
void OnBatteryStateSampled(
const std::optional<base::BatteryLevelProvider::BatteryState>&
battery_state) override {
last_sampled_state_ = battery_state;
}
std::optional<base::BatteryLevelProvider::BatteryState> last_sampled_state_ =
std::nullopt;
};
} // namespace
class BatteryLevelProviderChromeOSTest : public ::testing::Test {
protected:
void InitProvider(chromeos::FakePowerManagerClient* power_manager_client) {
battery_level_provider_ =
std::make_unique<BatteryLevelProviderChromeOS>(power_manager_client);
}
std::optional<base::BatteryLevelProvider::BatteryState> GetBatteryState() {
std::optional<base::BatteryLevelProvider::BatteryState> state;
battery_level_provider_->GetBatteryState(base::BindOnce(
[](std::optional<base::BatteryLevelProvider::BatteryState>* out,
const std::optional<base::BatteryLevelProvider::BatteryState>&
state) { *out = state; },
&state));
return state;
}
chromeos::FakePowerManagerClient fake_power_manager_client_;
std::unique_ptr<BatteryLevelProviderChromeOS> battery_level_provider_;
};
TEST_F(BatteryLevelProviderChromeOSTest, NoPowerManager) {
EXPECT_DCHECK_DEATH(InitProvider(nullptr));
}
TEST_F(BatteryLevelProviderChromeOSTest, NoLastStatus) {
fake_power_manager_client_.UpdatePowerProperties(std::nullopt);
InitProvider(&fake_power_manager_client_);
EXPECT_FALSE(GetBatteryState());
}
TEST_F(BatteryLevelProviderChromeOSTest, NoBattery) {
auto props = power_manager::PowerSupplyProperties();
props.set_battery_state(power_manager::PowerSupplyProperties::NOT_PRESENT);
fake_power_manager_client_.UpdatePowerProperties(props);
InitProvider(&fake_power_manager_client_);
std::optional<base::BatteryLevelProvider::BatteryState> state =
GetBatteryState();
EXPECT_TRUE(state);
EXPECT_EQ(0, state->battery_count);
EXPECT_TRUE(state->is_external_power_connected);
}
TEST_F(BatteryLevelProviderChromeOSTest, BatteryReportsMAh) {
auto props = power_manager::PowerSupplyProperties();
props.set_battery_state(power_manager::PowerSupplyProperties::DISCHARGING);
props.set_external_power(power_manager::PowerSupplyProperties::DISCONNECTED);
props.set_battery_charge(100.0);
props.set_battery_charge_full(500.0);
fake_power_manager_client_.UpdatePowerProperties(props);
InitProvider(&fake_power_manager_client_);
std::optional<base::BatteryLevelProvider::BatteryState> state =
GetBatteryState();
EXPECT_TRUE(state);
EXPECT_EQ(1, state->battery_count);
EXPECT_FALSE(state->is_external_power_connected);
EXPECT_EQ(100000UL, state->current_capacity);
EXPECT_EQ(500000UL, state->full_charged_capacity);
EXPECT_EQ(base::BatteryLevelProvider::BatteryLevelUnit::kMAh,
state->charge_unit);
}
TEST_F(BatteryLevelProviderChromeOSTest, BatteryReportsMWh) {
auto props = power_manager::PowerSupplyProperties();
props.set_battery_state(power_manager::PowerSupplyProperties::DISCHARGING);
props.set_external_power(power_manager::PowerSupplyProperties::DISCONNECTED);
props.set_battery_charge(100.0);
props.set_battery_charge_full(500.0);
props.set_battery_voltage(12.0);
fake_power_manager_client_.UpdatePowerProperties(props);
InitProvider(&fake_power_manager_client_);
std::optional<base::BatteryLevelProvider::BatteryState> state =
GetBatteryState();
EXPECT_TRUE(state);
EXPECT_EQ(1, state->battery_count);
EXPECT_FALSE(state->is_external_power_connected);
// Capacity in mWh is charge in mAh * voltage
EXPECT_EQ(1200000UL, state->current_capacity);
EXPECT_EQ(6000000UL, state->full_charged_capacity);
EXPECT_EQ(base::BatteryLevelProvider::BatteryLevelUnit::kMWh,
state->charge_unit);
}
TEST_F(BatteryLevelProviderChromeOSTest, BatteryReportsRelative) {
auto props = power_manager::PowerSupplyProperties();
props.set_battery_state(power_manager::PowerSupplyProperties::CHARGING);
props.set_external_power(power_manager::PowerSupplyProperties::AC);
props.set_battery_percent(20.0);
fake_power_manager_client_.UpdatePowerProperties(props);
InitProvider(&fake_power_manager_client_);
std::optional<base::BatteryLevelProvider::BatteryState> state =
GetBatteryState();
EXPECT_TRUE(state);
EXPECT_EQ(1, state->battery_count);
EXPECT_TRUE(state->is_external_power_connected);
EXPECT_EQ(20UL, state->current_capacity);
EXPECT_EQ(100UL, state->full_charged_capacity);
EXPECT_EQ(base::BatteryLevelProvider::BatteryLevelUnit::kRelative,
state->charge_unit);
}
TEST_F(BatteryLevelProviderChromeOSTest, WorksWithBatteryStateSampler) {
auto props = power_manager::PowerSupplyProperties();
props.set_battery_state(power_manager::PowerSupplyProperties::DISCHARGING);
props.set_external_power(power_manager::PowerSupplyProperties::DISCONNECTED);
props.set_battery_charge(100.0);
props.set_battery_charge_full(500.0);
props.set_battery_voltage(12.0);
fake_power_manager_client_.UpdatePowerProperties(props);
base::BatteryStateSampler sampler(
std::make_unique<DbusPowerManagerSamplingEventSource>(
&fake_power_manager_client_),
std::make_unique<BatteryLevelProviderChromeOS>(
&fake_power_manager_client_));
TestBatteryStateSamplerObserver obs;
EXPECT_FALSE(obs.last_sampled_state_);
base::ScopedObservation<base::BatteryStateSampler,
base::BatteryStateSampler::Observer>
observation{&obs};
observation.Observe(&sampler);
// Observers are notified right away when the battery state changes.
EXPECT_TRUE(obs.last_sampled_state_);
EXPECT_EQ(1, obs.last_sampled_state_->battery_count);
EXPECT_FALSE(obs.last_sampled_state_->is_external_power_connected);
// Capacity in mWh is charge in mAh * voltage
EXPECT_EQ(1200000UL, obs.last_sampled_state_->current_capacity);
EXPECT_EQ(6000000UL, obs.last_sampled_state_->full_charged_capacity);
EXPECT_EQ(base::BatteryLevelProvider::BatteryLevelUnit::kMWh,
obs.last_sampled_state_->charge_unit);
// Changing the state will trigger the sampling event source, which will cause
// the BatteryStateSampler to get the updated battery state.
auto other_props = power_manager::PowerSupplyProperties();
other_props.set_battery_state(power_manager::PowerSupplyProperties::CHARGING);
other_props.set_external_power(power_manager::PowerSupplyProperties::AC);
other_props.set_battery_percent(20.0);
fake_power_manager_client_.UpdatePowerProperties(other_props);
EXPECT_TRUE(obs.last_sampled_state_);
EXPECT_EQ(1, obs.last_sampled_state_->battery_count);
EXPECT_TRUE(obs.last_sampled_state_->is_external_power_connected);
EXPECT_EQ(20UL, obs.last_sampled_state_->current_capacity);
EXPECT_EQ(100UL, obs.last_sampled_state_->full_charged_capacity);
EXPECT_EQ(base::BatteryLevelProvider::BatteryLevelUnit::kRelative,
obs.last_sampled_state_->charge_unit);
}
} // namespace performance_manager::power
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