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- // Copyright 2017 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 "chromeos/system/cpu_temperature_reader.h"
- #include <algorithm>
- #include <string>
- #include "base/files/file.h"
- #include "base/files/file_util.h"
- #include "base/files/scoped_temp_dir.h"
- #include "testing/gtest/include/gtest/gtest.h"
- namespace chromeos {
- namespace system {
- class CPUTemperatureReaderTest : public ::testing::Test {
- public:
- CPUTemperatureReaderTest() {
- CHECK(dir_.CreateUniqueTempDir());
- hwmon_path_ = dir_.GetPath();
- reader_.set_hwmon_dir_for_test(hwmon_path_);
- }
- ~CPUTemperatureReaderTest() override = default;
- protected:
- using CPUTemperatureInfo = CPUTemperatureReader::CPUTemperatureInfo;
- // Creates a subdirectory in |hwmon_path_| with name |name|. Returns the full
- // path of the new subdirectory.
- base::FilePath CreateHwmonSubdir(const std::string& name) {
- base::FilePath subdir_path = hwmon_path_.Append(name);
- CHECK(base::CreateDirectory(subdir_path));
- return subdir_path;
- }
- // Creates a file at |path| containing data |contents|.
- void CreateFileWithContents(const base::FilePath& path,
- const std::string& contents) {
- CHECK_EQ(WriteFile(path, contents.data(), contents.size()),
- static_cast<int>(contents.size()));
- }
- // Creates a temporary dir to act as the hwmon directory passed to |reader_|.
- base::ScopedTempDir dir_;
- // Path of the temporary dir created by |dir_|.
- base::FilePath hwmon_path_;
- // Instance of the class under test
- CPUTemperatureReader reader_;
- };
- TEST_F(CPUTemperatureReaderTest, EmptyDir) {
- base::FilePath subdir_empty = CreateHwmonSubdir("hwmon0");
- base::FilePath subdir_not_temp = CreateHwmonSubdir("hwmon1");
- CreateFileWithContents(subdir_not_temp.Append("not_cpu_temp"), "garbage");
- EXPECT_EQ(0U, reader_.GetCPUTemperatures().size());
- }
- TEST_F(CPUTemperatureReaderTest, SingleDir) {
- base::FilePath subdir = CreateHwmonSubdir("hwmon0");
- CreateFileWithContents(subdir.Append("temp1_input"), "10000\n");
- std::vector<CPUTemperatureInfo> cpu_temp_readings =
- reader_.GetCPUTemperatures();
- ASSERT_EQ(1U, cpu_temp_readings.size());
- EXPECT_EQ(10.0f, cpu_temp_readings[0].temp_celsius);
- EXPECT_EQ(subdir.Append("temp1_label").value(), cpu_temp_readings[0].label);
- }
- TEST_F(CPUTemperatureReaderTest, SingleDirWithLabel) {
- base::FilePath subdir = CreateHwmonSubdir("hwmon0");
- CreateFileWithContents(subdir.Append("temp2_input"), "20000\n");
- CreateFileWithContents(subdir.Append("temp2_label"), "t2\n");
- std::vector<CPUTemperatureInfo> cpu_temp_readings =
- reader_.GetCPUTemperatures();
- ASSERT_EQ(1U, cpu_temp_readings.size());
- EXPECT_EQ(20.0f, cpu_temp_readings[0].temp_celsius);
- EXPECT_EQ("t2", cpu_temp_readings[0].label);
- }
- TEST_F(CPUTemperatureReaderTest, SingleDirWithName) {
- base::FilePath subdir = CreateHwmonSubdir("hwmon0");
- CreateFileWithContents(subdir.Append("temp3_input"), "30000\n");
- CreateFileWithContents(subdir.Append("temp3_label"), "\n");
- CreateFileWithContents(subdir.Append("name"), "t3\n");
- std::vector<CPUTemperatureInfo> cpu_temp_readings =
- reader_.GetCPUTemperatures();
- ASSERT_EQ(1U, cpu_temp_readings.size());
- EXPECT_EQ(30.0f, cpu_temp_readings[0].temp_celsius);
- EXPECT_EQ("t3", cpu_temp_readings[0].label);
- }
- TEST_F(CPUTemperatureReaderTest, SingleDirWithDeviceSubdir) {
- base::FilePath subdir = CreateHwmonSubdir("hwmon0");
- CreateFileWithContents(subdir.Append("temp1_input"), "10000\n");
- base::FilePath device_subdir = subdir.Append("device");
- base::CreateDirectory(device_subdir);
- CreateFileWithContents(device_subdir.Append("temp1_input"), "20000\n");
- std::vector<CPUTemperatureInfo> cpu_temp_readings =
- reader_.GetCPUTemperatures();
- ASSERT_EQ(2U, cpu_temp_readings.size());
- EXPECT_EQ(10.0f, cpu_temp_readings[0].temp_celsius);
- EXPECT_EQ(subdir.Append("temp1_label").value(), cpu_temp_readings[0].label);
- EXPECT_EQ(20.0f, cpu_temp_readings[1].temp_celsius);
- EXPECT_EQ(device_subdir.Append("temp1_label").value(),
- cpu_temp_readings[1].label);
- }
- TEST_F(CPUTemperatureReaderTest, MultipleDirs) {
- base::FilePath subdir0 = CreateHwmonSubdir("hwmon0");
- CreateFileWithContents(subdir0.Append("temp1_input"), "10000\n");
- base::FilePath subdir1 = CreateHwmonSubdir("hwmon1");
- CreateFileWithContents(subdir1.Append("temp2_input"), "20000\n");
- CreateFileWithContents(subdir1.Append("temp2_label"), "t2\n");
- // This should not result in a CPU temperature reading.
- base::FilePath subdir2 = CreateHwmonSubdir("hwmon2");
- CreateFileWithContents(subdir2.Append("not_cpu_temp"), "garbage");
- base::FilePath subdir3 = CreateHwmonSubdir("hwmon3");
- CreateFileWithContents(subdir3.Append("temp3_input"), "30000\n");
- CreateFileWithContents(subdir3.Append("temp3_label"), "t3\n");
- std::vector<CPUTemperatureInfo> cpu_temp_readings =
- reader_.GetCPUTemperatures();
- // The order in which these directories were read is not guaranteed. Sort them
- // first.
- std::sort(cpu_temp_readings.begin(), cpu_temp_readings.end());
- ASSERT_EQ(3U, cpu_temp_readings.size());
- EXPECT_EQ(10.0f, cpu_temp_readings[0].temp_celsius);
- EXPECT_EQ(subdir0.Append("temp1_label").value(), cpu_temp_readings[0].label);
- EXPECT_EQ(20.0f, cpu_temp_readings[1].temp_celsius);
- EXPECT_EQ("t2", cpu_temp_readings[1].label);
- EXPECT_EQ(30.0f, cpu_temp_readings[2].temp_celsius);
- EXPECT_EQ("t3", cpu_temp_readings[2].label);
- }
- } // namespace system
- } // namespace chromeos
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