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// Copyright 2020 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifdef UNSAFE_BUFFERS_BUILD
// TODO(crbug.com/40285824): Remove this and convert code to safer constructs.
#pragma allow_unsafe_buffers
#endif
#include "chrome/browser/ash/power/auto_screen_brightness/light_samples_observer.h"
#include <memory>
#include <utility>
#include "base/functional/bind.h"
#include "base/run_loop.h"
#include "base/test/metrics/histogram_tester.h"
#include "base/test/task_environment.h"
#include "chrome/browser/ash/power/auto_screen_brightness/fake_observer.h"
#include "chrome/browser/ash/power/auto_screen_brightness/utils.h"
#include "chromeos/components/sensors/fake_sensor_device.h"
#include "testing/gtest/include/gtest/gtest.h"
namespace ash {
namespace power {
namespace auto_screen_brightness {
namespace {
constexpr int64_t kFakeSampleData = 50;
constexpr int64_t kFakeColorSampleData = 60;
constexpr char kIlluminanceColorChannels[][18] = {
"illuminance_red", "illuminance_green", "illuminance_blue"};
} // namespace
class LightSamplesObserverTest : public testing::Test {
protected:
void SetChannels(bool is_color_sensor) {
std::vector<chromeos::sensors::FakeSensorDevice::ChannelData> channels_data;
chromeos::sensors::FakeSensorDevice::ChannelData illuminance_data;
illuminance_data.id = chromeos::sensors::mojom::kLightChannel;
illuminance_data.sample_data = kFakeSampleData;
channels_data.push_back(std::move(illuminance_data));
if (is_color_sensor) {
for (size_t i = 0; i < std::size(kIlluminanceColorChannels); ++i) {
illuminance_data.id = kIlluminanceColorChannels[i];
illuminance_data.sample_data = kFakeColorSampleData;
channels_data.push_back(std::move(illuminance_data));
}
}
sensor_device_ = std::make_unique<chromeos::sensors::FakeSensorDevice>(
std::move(channels_data));
}
void SetProvider(mojo::Remote<chromeos::sensors::mojom::SensorDevice> light) {
als_reader_ = std::make_unique<AlsReader>();
observer_ = std::make_unique<LightSamplesObserver>(als_reader_.get(),
std::move(light));
als_reader_->AddObserver(&fake_observer_);
}
void DisableIlluminanceChannel(mojo::ReceiverId id) {
sensor_device_->SetChannelsEnabledWithId(id, {0}, false);
}
std::unique_ptr<chromeos::sensors::FakeSensorDevice> sensor_device_;
FakeObserver fake_observer_;
std::unique_ptr<LightSamplesObserver> observer_;
std::unique_ptr<AlsReader> als_reader_;
base::HistogramTester histogram_tester_;
base::test::SingleThreadTaskEnvironment task_environment_;
};
TEST_F(LightSamplesObserverTest, MissingChannels) {
sensor_device_ = std::make_unique<chromeos::sensors::FakeSensorDevice>(
std::vector<chromeos::sensors::FakeSensorDevice::ChannelData>{});
mojo::Remote<chromeos::sensors::mojom::SensorDevice> light;
sensor_device_->AddReceiver(light.BindNewPipeAndPassReceiver());
SetProvider(std::move(light));
// Wait until the mojo connection is reset.
base::RunLoop().RunUntilIdle();
histogram_tester_.ExpectUniqueSample(
"AutoScreenBrightness.DataError",
static_cast<int>(DataError::kMojoSamplesObserver), 1);
EXPECT_FALSE(sensor_device_->HasReceivers());
EXPECT_EQ(fake_observer_.num_received_ambient_lights(), 0);
}
TEST_F(LightSamplesObserverTest, StartReadingTwiceError) {
SetChannels(false);
mojo::Remote<chromeos::sensors::mojom::SensorDevice> light;
sensor_device_->AddReceiver(light.BindNewPipeAndPassReceiver());
mojo::PendingRemote<chromeos::sensors::mojom::SensorDeviceSamplesObserver>
pending_remote;
auto null_receiver = pending_remote.InitWithNewPipeAndPassReceiver();
light->StartReadingSamples(std::move(pending_remote));
SetProvider(std::move(light));
// Wait until the mojo connection is reset.
base::RunLoop().RunUntilIdle();
histogram_tester_.ExpectUniqueSample(
"AutoScreenBrightness.DataError",
static_cast<int>(DataError::kMojoSamplesObserver), 1);
EXPECT_FALSE(sensor_device_->HasReceivers());
EXPECT_EQ(fake_observer_.num_received_ambient_lights(), 0);
}
TEST_F(LightSamplesObserverTest, GetSamplesWithoutColorChannels) {
SetChannels(false);
mojo::Remote<chromeos::sensors::mojom::SensorDevice> light;
auto id = sensor_device_->AddReceiver(light.BindNewPipeAndPassReceiver());
SetProvider(std::move(light));
// Wait until a sample is received.
base::RunLoop().RunUntilIdle();
EXPECT_TRUE(sensor_device_->HasReceivers());
EXPECT_EQ(fake_observer_.num_received_ambient_lights(), 1);
EXPECT_EQ(fake_observer_.ambient_light(), kFakeSampleData);
DisableIlluminanceChannel(id);
// Wait until a sample is received.
base::RunLoop().RunUntilIdle();
EXPECT_TRUE(sensor_device_->HasReceivers());
// The updated sample is not sent to |OnAmbientLightUpdated(lux)|.
EXPECT_EQ(fake_observer_.num_received_ambient_lights(), 1);
// Simulate a disconnection of the observer's mojo channel in IIO Service.
sensor_device_->ResetObserverRemote(id);
// Wait until the disconnection is done.
base::RunLoop().RunUntilIdle();
// OnObserverDisconnect shouldn't reset SensorDevice's mojo endpoint so that
// LightProviderMojo can get the disconnection.
EXPECT_TRUE(sensor_device_->HasReceivers());
}
TEST_F(LightSamplesObserverTest, GetSamplesWithColorChannels) {
SetChannels(true);
mojo::Remote<chromeos::sensors::mojom::SensorDevice> light;
sensor_device_->AddReceiver(light.BindNewPipeAndPassReceiver());
SetProvider(std::move(light));
// Wait until a sample is received.
base::RunLoop().RunUntilIdle();
EXPECT_TRUE(sensor_device_->HasReceivers());
EXPECT_EQ(fake_observer_.num_received_ambient_lights(), 1);
EXPECT_EQ(fake_observer_.ambient_light(), kFakeSampleData);
base::flat_map<int32_t, int64_t> sample;
sample[2] = kFakeColorSampleData;
// Should ignore a sample without the target channel: illuminance.
observer_->OnSampleUpdated(sample);
EXPECT_EQ(fake_observer_.num_received_ambient_lights(), 1);
}
} // namespace auto_screen_brightness
} // namespace power
} // namespace ash
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