phosphor-regulators/test/system_tests.cpp - openbmc/phosphor-power - Gitiles

 /**
  * Copyright © 2020 IBM Corporation
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
  * You may obtain a copy of the License at
  *
  *     http://www.apache.org/licenses/LICENSE-2.0
  *
  * Unless required by applicable law or agreed to in writing, software
  * distributed under the License is distributed on an "AS IS" BASIS,
  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
 #include "action.hpp"
 #include "chassis.hpp"
 #include "configuration.hpp"
 #include "device.hpp"
 #include "i2c_interface.hpp"
 #include "id_map.hpp"
 #include "log_phase_fault_action.hpp"
 #include "mock_action.hpp"
 #include "mock_error_logging.hpp"
 #include "mock_journal.hpp"
 #include "mock_sensors.hpp"
 #include "mock_services.hpp"
 #include "mocked_i2c_interface.hpp"
 #include "phase_fault.hpp"
 #include "phase_fault_detection.hpp"
 #include "presence_detection.hpp"
 #include "rail.hpp"
 #include "rule.hpp"
 #include "sensor_monitoring.hpp"
 #include "sensors.hpp"
 #include "services.hpp"
 #include "system.hpp"
 #include "test_sdbus_error.hpp"
 #include "test_utils.hpp"

 #include <memory>
 #include <stdexcept>
 #include <string>
 #include <utility>
 #include <vector>

 #include <gmock/gmock.h>
 #include <gtest/gtest.h>

 using namespace phosphor::power::regulators;
 using namespace phosphor::power::regulators::test_utils;

 using ::testing::A;
 using ::testing::Return;
 using ::testing::Throw;
 using ::testing::TypedEq;

 static const std::string chassisInvPath{
     "/xyz/openbmc_project/inventory/system/chassis"};

 TEST(SystemTests, Constructor)
 {
     // Create Rules
     std::vector<std::unique_ptr<Rule>> rules{};
     rules.emplace_back(createRule("set_voltage_rule"));

     // Create Chassis
     std::vector<std::unique_ptr<Chassis>> chassis{};
     std::vector<std::unique_ptr<Device>> devices{};
     devices.emplace_back(createDevice("reg1", {"rail1"}));
     chassis.emplace_back(
         std::make_unique<Chassis>(1, chassisInvPath, std::move(devices)));

     // Create System
     System system{std::move(rules), std::move(chassis)};
     EXPECT_EQ(system.getChassis().size(), 1);
     EXPECT_EQ(system.getChassis()[0]->getNumber(), 1);
     EXPECT_NO_THROW(system.getIDMap().getRule("set_voltage_rule"));
     EXPECT_NO_THROW(system.getIDMap().getDevice("reg1"));
     EXPECT_NO_THROW(system.getIDMap().getRail("rail1"));
     EXPECT_THROW(system.getIDMap().getRail("rail2"), std::invalid_argument);
     EXPECT_EQ(system.getRules().size(), 1);
     EXPECT_EQ(system.getRules()[0]->getID(), "set_voltage_rule");
 }

 TEST(SystemTests, ClearCache)
 {
     // Create PresenceDetection
     std::vector<std::unique_ptr<Action>> actions{};
     auto presenceDetection =
         std::make_unique<PresenceDetection>(std::move(actions));
     PresenceDetection* presenceDetectionPtr = presenceDetection.get();

     // Create Device that contains PresenceDetection
     auto i2cInterface = std::make_unique<i2c::MockedI2CInterface>();
     auto device = std::make_unique<Device>(
         "reg1", true,
         "/xyz/openbmc_project/inventory/system/chassis/motherboard/reg1",
         std::move(i2cInterface), std::move(presenceDetection));
     Device* devicePtr = device.get();

     // Create Chassis that contains Device
     std::vector<std::unique_ptr<Device>> devices{};
     devices.emplace_back(std::move(device));
     auto chassis = std::make_unique<Chassis>(1, chassisInvPath,
                                              std::move(devices));
     Chassis* chassisPtr = chassis.get();

     // Create System that contains Chassis
     std::vector<std::unique_ptr<Rule>> rules{};
     std::vector<std::unique_ptr<Chassis>> chassisVec{};
     chassisVec.emplace_back(std::move(chassis));
     System system{std::move(rules), std::move(chassisVec)};

     // Cache presence value in PresenceDetection
     MockServices services{};
     presenceDetectionPtr->execute(services, system, *chassisPtr, *devicePtr);
     EXPECT_TRUE(presenceDetectionPtr->getCachedPresence().has_value());

     // Clear cached data in System
     system.clearCache();

     // Verify presence value no longer cached in PresenceDetection
     EXPECT_FALSE(presenceDetectionPtr->getCachedPresence().has_value());
 }

 TEST(SystemTests, ClearErrorHistory)
 {
     // Create SensorMonitoring.  Will fail with a DBus exception.
     auto action = std::make_unique<MockAction>();
     EXPECT_CALL(*action, execute)
         .WillRepeatedly(Throw(TestSDBusError{"Unable to set sensor value"}));
     std::vector<std::unique_ptr<Action>> actions{};
     actions.emplace_back(std::move(action));
     auto sensorMonitoring =
         std::make_unique<SensorMonitoring>(std::move(actions));

     // Create Rail
     std::unique_ptr<Configuration> configuration{};
     auto rail = std::make_unique<Rail>("vddr1", std::move(configuration),
                                        std::move(sensorMonitoring));

     // Create Device that contains Rail
     auto i2cInterface = std::make_unique<i2c::MockedI2CInterface>();
     std::unique_ptr<PresenceDetection> presenceDetection{};
     std::unique_ptr<Configuration> deviceConfiguration{};
     std::unique_ptr<PhaseFaultDetection> phaseFaultDetection{};
     std::vector<std::unique_ptr<Rail>> rails{};
     rails.emplace_back(std::move(rail));
     auto device = std::make_unique<Device>(
         "reg1", true,
         "/xyz/openbmc_project/inventory/system/chassis/motherboard/reg1",
         std::move(i2cInterface), std::move(presenceDetection),
         std::move(deviceConfiguration), std::move(phaseFaultDetection),
         std::move(rails));

     // Create Chassis that contains Device
     std::vector<std::unique_ptr<Device>> devices{};
     devices.emplace_back(std::move(device));
     auto chassis = std::make_unique<Chassis>(1, chassisInvPath,
                                              std::move(devices));

     // Create System that contains Chassis
     std::vector<std::unique_ptr<Rule>> rules{};
     std::vector<std::unique_ptr<Chassis>> chassisVec{};
     chassisVec.emplace_back(std::move(chassis));
     System system{std::move(rules), std::move(chassisVec)};

     // Create lambda that sets MockServices expectations.  The lambda allows
     // us to set expectations multiple times without duplicate code.
     auto setExpectations = [](MockServices& services) {
         // Expect Sensors service to be called 10 times
         MockSensors& sensors = services.getMockSensors();
         EXPECT_CALL(sensors, startRail).Times(10);
         EXPECT_CALL(sensors, setValue).Times(0);
         EXPECT_CALL(sensors, endRail).Times(10);

         // Expect Journal service to be called 6 times to log error messages
         MockJournal& journal = services.getMockJournal();
         EXPECT_CALL(journal, logError(A<const std::vector<std::string>&>()))
             .Times(6);
         EXPECT_CALL(journal, logError(A<const std::string&>())).Times(6);

         // Expect ErrorLogging service to be called once to log a DBus error
         MockErrorLogging& errorLogging = services.getMockErrorLogging();
         EXPECT_CALL(errorLogging, logDBusError).Times(1);
     };

     // Monitor sensors 10 times.  Verify errors logged.
     {
         // Create mock services.  Set expectations via lambda.
         MockServices services{};
         setExpectations(services);

         for (int i = 1; i <= 10; ++i)
         {
             system.monitorSensors(services);
         }
     }

     // Clear error history
     system.clearErrorHistory();

     // Monitor sensors 10 more times.  Verify errors logged again.
     {
         // Create mock services.  Set expectations via lambda.
         MockServices services{};
         setExpectations(services);

         for (int i = 1; i <= 10; ++i)
         {
             system.monitorSensors(services);
         }
     }
 }

 TEST(SystemTests, CloseDevices)
 {
     // Specify an empty rules vector
     std::vector<std::unique_ptr<Rule>> rules{};

     // Create mock services.  Expect logDebug() to be called.
     MockServices services{};
     MockJournal& journal = services.getMockJournal();
     EXPECT_CALL(journal, logDebug("Closing devices in chassis 1")).Times(1);
     EXPECT_CALL(journal, logDebug("Closing devices in chassis 3")).Times(1);
     EXPECT_CALL(journal, logInfo(A<const std::string&>())).Times(0);
     EXPECT_CALL(journal, logError(A<const std::string&>())).Times(0);

     // Create Chassis
     std::vector<std::unique_ptr<Chassis>> chassis{};
     chassis.emplace_back(std::make_unique<Chassis>(1, chassisInvPath + '1'));
     chassis.emplace_back(std::make_unique<Chassis>(3, chassisInvPath + '3'));

     // Create System
     System system{std::move(rules), std::move(chassis)};

     // Call closeDevices()
     system.closeDevices(services);
 }

 TEST(SystemTests, Configure)
 {
     // Create mock services.  Expect logInfo() to be called.
     MockServices services{};
     MockJournal& journal = services.getMockJournal();
     EXPECT_CALL(journal, logInfo("Configuring chassis 1")).Times(1);
     EXPECT_CALL(journal, logInfo("Configuring chassis 3")).Times(1);
     EXPECT_CALL(journal, logDebug(A<const std::string&>())).Times(0);
     EXPECT_CALL(journal, logError(A<const std::string&>())).Times(0);

     // Specify an empty rules vector
     std::vector<std::unique_ptr<Rule>> rules{};

     // Create Chassis
     std::vector<std::unique_ptr<Chassis>> chassis{};
     chassis.emplace_back(std::make_unique<Chassis>(1, chassisInvPath + '1'));
     chassis.emplace_back(std::make_unique<Chassis>(3, chassisInvPath + '3'));

     // Create System
     System system{std::move(rules), std::move(chassis)};

     // Call configure()
     system.configure(services);
 }

 TEST(SystemTests, DetectPhaseFaults)
 {
     // Create mock services with the following expectations:
     // - 2 error messages in journal for N phase fault detected in reg0
     // - 2 error messages in journal for N phase fault detected in reg1
     // - 1 N phase fault error logged for reg0
     // - 1 N phase fault error logged for reg1
     MockServices services{};
     MockJournal& journal = services.getMockJournal();
     EXPECT_CALL(journal,
                 logError("n phase fault detected in regulator reg0: count=1"))
         .Times(1);
     EXPECT_CALL(journal,
                 logError("n phase fault detected in regulator reg0: count=2"))
         .Times(1);
     EXPECT_CALL(journal,
                 logError("n phase fault detected in regulator reg1: count=1"))
         .Times(1);
     EXPECT_CALL(journal,
                 logError("n phase fault detected in regulator reg1: count=2"))
         .Times(1);
     MockErrorLogging& errorLogging = services.getMockErrorLogging();
     EXPECT_CALL(errorLogging, logPhaseFault).Times(2);

     std::vector<std::unique_ptr<Chassis>> chassisVec{};

     // Create Chassis 1 with regulator reg0
     {
         // Create PhaseFaultDetection
         auto action = std::make_unique<LogPhaseFaultAction>(PhaseFaultType::n);
         std::vector<std::unique_ptr<Action>> actions{};
         actions.push_back(std::move(action));
         auto phaseFaultDetection =
             std::make_unique<PhaseFaultDetection>(std::move(actions));

         // Create Device
         auto i2cInterface = std::make_unique<i2c::MockedI2CInterface>();
         std::unique_ptr<PresenceDetection> presenceDetection{};
         std::unique_ptr<Configuration> configuration{};
         auto device = std::make_unique<Device>(
             "reg0", true,
             "/xyz/openbmc_project/inventory/system/chassis1/motherboard/"
             "reg0",
             std::move(i2cInterface), std::move(presenceDetection),
             std::move(configuration), std::move(phaseFaultDetection));

         // Create Chassis
         std::vector<std::unique_ptr<Device>> devices{};
         devices.emplace_back(std::move(device));
         auto chassis = std::make_unique<Chassis>(1, chassisInvPath + '1',
                                                  std::move(devices));
         chassisVec.emplace_back(std::move(chassis));
     }

     // Create Chassis 2 with regulator reg1
     {
         // Create PhaseFaultDetection
         auto action = std::make_unique<LogPhaseFaultAction>(PhaseFaultType::n);
         std::vector<std::unique_ptr<Action>> actions{};
         actions.push_back(std::move(action));
         auto phaseFaultDetection =
             std::make_unique<PhaseFaultDetection>(std::move(actions));

         // Create Device
         auto i2cInterface = std::make_unique<i2c::MockedI2CInterface>();
         std::unique_ptr<PresenceDetection> presenceDetection{};
         std::unique_ptr<Configuration> configuration{};
         auto device = std::make_unique<Device>(
             "reg1", true,
             "/xyz/openbmc_project/inventory/system/chassis2/motherboard/"
             "reg1",
             std::move(i2cInterface), std::move(presenceDetection),
             std::move(configuration), std::move(phaseFaultDetection));

         // Create Chassis
         std::vector<std::unique_ptr<Device>> devices{};
         devices.emplace_back(std::move(device));
         auto chassis = std::make_unique<Chassis>(2, chassisInvPath + '2',
                                                  std::move(devices));
         chassisVec.emplace_back(std::move(chassis));
     }

     // Create System that contains Chassis
     std::vector<std::unique_ptr<Rule>> rules{};
     System system{std::move(rules), std::move(chassisVec)};

     // Call detectPhaseFaults() 5 times
     for (int i = 1; i <= 5; ++i)
     {
         system.detectPhaseFaults(services);
     }
 }

 TEST(SystemTests, GetChassis)
 {
     // Specify an empty rules vector
     std::vector<std::unique_ptr<Rule>> rules{};

     // Create Chassis
     std::vector<std::unique_ptr<Chassis>> chassis{};
     chassis.emplace_back(std::make_unique<Chassis>(1, chassisInvPath + '1'));
     chassis.emplace_back(std::make_unique<Chassis>(3, chassisInvPath + '3'));

     // Create System
     System system{std::move(rules), std::move(chassis)};
     EXPECT_EQ(system.getChassis().size(), 2);
     EXPECT_EQ(system.getChassis()[0]->getNumber(), 1);
     EXPECT_EQ(system.getChassis()[1]->getNumber(), 3);
 }

 TEST(SystemTests, GetIDMap)
 {
     // Create Rules
     std::vector<std::unique_ptr<Rule>> rules{};
     rules.emplace_back(createRule("set_voltage_rule"));
     rules.emplace_back(createRule("read_sensors_rule"));

     // Create Chassis
     std::vector<std::unique_ptr<Chassis>> chassis{};
     {
         // Chassis 1
         std::vector<std::unique_ptr<Device>> devices{};
         devices.emplace_back(createDevice("reg1", {"rail1"}));
         devices.emplace_back(createDevice("reg2", {"rail2a", "rail2b"}));
         chassis.emplace_back(std::make_unique<Chassis>(1, chassisInvPath + '1',
                                                        std::move(devices)));
     }
     {
         // Chassis 2
         std::vector<std::unique_ptr<Device>> devices{};
         devices.emplace_back(createDevice("reg3", {"rail3a", "rail3b"}));
         devices.emplace_back(createDevice("reg4"));
         chassis.emplace_back(std::make_unique<Chassis>(2, chassisInvPath + '2',
                                                        std::move(devices)));
     }

     // Create System
     System system{std::move(rules), std::move(chassis)};
     const IDMap& idMap = system.getIDMap();

     // Verify all Rules are in the IDMap
     EXPECT_NO_THROW(idMap.getRule("set_voltage_rule"));
     EXPECT_NO_THROW(idMap.getRule("read_sensors_rule"));
     EXPECT_THROW(idMap.getRule("set_voltage_rule2"), std::invalid_argument);

     // Verify all Devices are in the IDMap
     EXPECT_NO_THROW(idMap.getDevice("reg1"));
     EXPECT_NO_THROW(idMap.getDevice("reg2"));
     EXPECT_NO_THROW(idMap.getDevice("reg3"));
     EXPECT_NO_THROW(idMap.getDevice("reg4"));
     EXPECT_THROW(idMap.getDevice("reg5"), std::invalid_argument);

     // Verify all Rails are in the IDMap
     EXPECT_NO_THROW(idMap.getRail("rail1"));
     EXPECT_NO_THROW(idMap.getRail("rail2a"));
     EXPECT_NO_THROW(idMap.getRail("rail2b"));
     EXPECT_NO_THROW(idMap.getRail("rail3a"));
     EXPECT_NO_THROW(idMap.getRail("rail3b"));
     EXPECT_THROW(idMap.getRail("rail4"), std::invalid_argument);
 }

 TEST(SystemTests, GetRules)
 {
     // Create Rules
     std::vector<std::unique_ptr<Rule>> rules{};
     rules.emplace_back(createRule("set_voltage_rule"));
     rules.emplace_back(createRule("read_sensors_rule"));

     // Create Chassis
     std::vector<std::unique_ptr<Chassis>> chassis{};
     chassis.emplace_back(std::make_unique<Chassis>(1, chassisInvPath));

     // Create System
     System system{std::move(rules), std::move(chassis)};
     EXPECT_EQ(system.getRules().size(), 2);
     EXPECT_EQ(system.getRules()[0]->getID(), "set_voltage_rule");
     EXPECT_EQ(system.getRules()[1]->getID(), "read_sensors_rule");
 }

 TEST(SystemTests, MonitorSensors)
 {
     // Create mock services.  Set Sensors service expectations.
     MockServices services{};
     MockSensors& sensors = services.getMockSensors();
     EXPECT_CALL(sensors, startRail("c1_vdd0",
                                    "/xyz/openbmc_project/inventory/system/"
                                    "chassis1/motherboard/vdd0_reg",
                                    chassisInvPath + '1'))
         .Times(1);
     EXPECT_CALL(sensors, startRail("c2_vdd0",
                                    "/xyz/openbmc_project/inventory/system/"
                                    "chassis2/motherboard/vdd0_reg",
                                    chassisInvPath + '2'))
         .Times(1);
     EXPECT_CALL(sensors, setValue).Times(0);
     EXPECT_CALL(sensors, endRail(false)).Times(2);

     std::vector<std::unique_ptr<Chassis>> chassisVec{};

     // Create Chassis 1
     {
         // Create SensorMonitoring for Rail
         auto action = std::make_unique<MockAction>();
         EXPECT_CALL(*action, execute).Times(1).WillOnce(Return(true));
         std::vector<std::unique_ptr<Action>> actions{};
         actions.emplace_back(std::move(action));
         auto sensorMonitoring =
             std::make_unique<SensorMonitoring>(std::move(actions));

         // Create Rail
         std::unique_ptr<Configuration> configuration{};
         auto rail = std::make_unique<Rail>("c1_vdd0", std::move(configuration),
                                            std::move(sensorMonitoring));

         // Create Device
         auto i2cInterface = std::make_unique<i2c::MockedI2CInterface>();
         std::unique_ptr<PresenceDetection> presenceDetection{};
         std::unique_ptr<Configuration> deviceConfiguration{};
         std::unique_ptr<PhaseFaultDetection> phaseFaultDetection{};
         std::vector<std::unique_ptr<Rail>> rails{};
         rails.emplace_back(std::move(rail));
         auto device = std::make_unique<Device>(
             "c1_vdd0_reg", true,
             "/xyz/openbmc_project/inventory/system/chassis1/motherboard/"
             "vdd0_reg",
             std::move(i2cInterface), std::move(presenceDetection),
             std::move(deviceConfiguration), std::move(phaseFaultDetection),
             std::move(rails));

         // Create Chassis
         std::vector<std::unique_ptr<Device>> devices{};
         devices.emplace_back(std::move(device));
         auto chassis = std::make_unique<Chassis>(1, chassisInvPath + '1',
                                                  std::move(devices));
         chassisVec.emplace_back(std::move(chassis));
     }

     // Create Chassis 2
     {
         // Create SensorMonitoring for Rail
         auto action = std::make_unique<MockAction>();
         EXPECT_CALL(*action, execute).Times(1).WillOnce(Return(true));
         std::vector<std::unique_ptr<Action>> actions{};
         actions.emplace_back(std::move(action));
         auto sensorMonitoring =
             std::make_unique<SensorMonitoring>(std::move(actions));

         // Create Rail
         std::unique_ptr<Configuration> configuration{};
         auto rail = std::make_unique<Rail>("c2_vdd0", std::move(configuration),
                                            std::move(sensorMonitoring));

         // Create Device
         auto i2cInterface = std::make_unique<i2c::MockedI2CInterface>();
         std::unique_ptr<PresenceDetection> presenceDetection{};
         std::unique_ptr<Configuration> deviceConfiguration{};
         std::unique_ptr<PhaseFaultDetection> phaseFaultDetection{};
         std::vector<std::unique_ptr<Rail>> rails{};
         rails.emplace_back(std::move(rail));
         auto device = std::make_unique<Device>(
             "c2_vdd0_reg", true,
             "/xyz/openbmc_project/inventory/system/chassis2/motherboard/"
             "vdd0_reg",
             std::move(i2cInterface), std::move(presenceDetection),
             std::move(deviceConfiguration), std::move(phaseFaultDetection),
             std::move(rails));

         // Create Chassis
         std::vector<std::unique_ptr<Device>> devices{};
         devices.emplace_back(std::move(device));
         auto chassis = std::make_unique<Chassis>(2, chassisInvPath + '2',
                                                  std::move(devices));
         chassisVec.emplace_back(std::move(chassis));
     }

     // Create System that contains Chassis
     std::vector<std::unique_ptr<Rule>> rules{};
     System system{std::move(rules), std::move(chassisVec)};

     // Call monitorSensors()
     system.monitorSensors(services);
 }
	/**
	* Copyright © 2020 IBM Corporation
	*
	* Licensed under the Apache License, Version 2.0 (the "License");
	* you may not use this file except in compliance with the License.
	* You may obtain a copy of the License at
	*
	* http://www.apache.org/licenses/LICENSE-2.0
	*
	* Unless required by applicable law or agreed to in writing, software
	* distributed under the License is distributed on an "AS IS" BASIS,
	* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
	* See the License for the specific language governing permissions and
	* limitations under the License.
	*/
	#include "action.hpp"
	#include "chassis.hpp"
	#include "configuration.hpp"
	#include "device.hpp"
	#include "i2c_interface.hpp"
	#include "id_map.hpp"
	#include "log_phase_fault_action.hpp"
	#include "mock_action.hpp"
	#include "mock_error_logging.hpp"
	#include "mock_journal.hpp"
	#include "mock_sensors.hpp"
	#include "mock_services.hpp"
	#include "mocked_i2c_interface.hpp"
	#include "phase_fault.hpp"
	#include "phase_fault_detection.hpp"
	#include "presence_detection.hpp"
	#include "rail.hpp"
	#include "rule.hpp"
	#include "sensor_monitoring.hpp"
	#include "sensors.hpp"
	#include "services.hpp"
	#include "system.hpp"
	#include "test_sdbus_error.hpp"
	#include "test_utils.hpp"

	#include <memory>
	#include <stdexcept>
	#include <string>
	#include <utility>
	#include <vector>

	#include <gmock/gmock.h>
	#include <gtest/gtest.h>

	using namespace phosphor::power::regulators;
	using namespace phosphor::power::regulators::test_utils;

	using ::testing::A;
	using ::testing::Return;
	using ::testing::Throw;
	using ::testing::TypedEq;

	static const std::string chassisInvPath{
	"/xyz/openbmc_project/inventory/system/chassis"};

	TEST(SystemTests, Constructor)
	{
	// Create Rules
	std::vector<std::unique_ptr<Rule>> rules{};
	rules.emplace_back(createRule("set_voltage_rule"));

	// Create Chassis
	std::vector<std::unique_ptr<Chassis>> chassis{};
	std::vector<std::unique_ptr<Device>> devices{};
	devices.emplace_back(createDevice("reg1", {"rail1"}));
	chassis.emplace_back(
	std::make_unique<Chassis>(1, chassisInvPath, std::move(devices)));

	// Create System
	System system{std::move(rules), std::move(chassis)};
	EXPECT_EQ(system.getChassis().size(), 1);
	EXPECT_EQ(system.getChassis()[0]->getNumber(), 1);
	EXPECT_NO_THROW(system.getIDMap().getRule("set_voltage_rule"));
	EXPECT_NO_THROW(system.getIDMap().getDevice("reg1"));
	EXPECT_NO_THROW(system.getIDMap().getRail("rail1"));
	EXPECT_THROW(system.getIDMap().getRail("rail2"), std::invalid_argument);
	EXPECT_EQ(system.getRules().size(), 1);
	EXPECT_EQ(system.getRules()[0]->getID(), "set_voltage_rule");
	}

	TEST(SystemTests, ClearCache)
	{
	// Create PresenceDetection
	std::vector<std::unique_ptr<Action>> actions{};
	auto presenceDetection =
	std::make_unique<PresenceDetection>(std::move(actions));
	PresenceDetection* presenceDetectionPtr = presenceDetection.get();

	// Create Device that contains PresenceDetection
	auto i2cInterface = std::make_unique<i2c::MockedI2CInterface>();
	auto device = std::make_unique<Device>(
	"reg1", true,
	"/xyz/openbmc_project/inventory/system/chassis/motherboard/reg1",
	std::move(i2cInterface), std::move(presenceDetection));
	Device* devicePtr = device.get();

	// Create Chassis that contains Device
	std::vector<std::unique_ptr<Device>> devices{};
	devices.emplace_back(std::move(device));
	auto chassis = std::make_unique<Chassis>(1, chassisInvPath,
	std::move(devices));
	Chassis* chassisPtr = chassis.get();

	// Create System that contains Chassis
	std::vector<std::unique_ptr<Rule>> rules{};
	std::vector<std::unique_ptr<Chassis>> chassisVec{};
	chassisVec.emplace_back(std::move(chassis));
	System system{std::move(rules), std::move(chassisVec)};

	// Cache presence value in PresenceDetection
	MockServices services{};
	presenceDetectionPtr->execute(services, system, chassisPtr, devicePtr);
	EXPECT_TRUE(presenceDetectionPtr->getCachedPresence().has_value());

	// Clear cached data in System
	system.clearCache();

	// Verify presence value no longer cached in PresenceDetection
	EXPECT_FALSE(presenceDetectionPtr->getCachedPresence().has_value());
	}

	TEST(SystemTests, ClearErrorHistory)
	{
	// Create SensorMonitoring. Will fail with a DBus exception.
	auto action = std::make_unique<MockAction>();
	EXPECT_CALL(*action, execute)
	.WillRepeatedly(Throw(TestSDBusError{"Unable to set sensor value"}));
	std::vector<std::unique_ptr<Action>> actions{};
	actions.emplace_back(std::move(action));
	auto sensorMonitoring =
	std::make_unique<SensorMonitoring>(std::move(actions));

	// Create Rail
	std::unique_ptr<Configuration> configuration{};
	auto rail = std::make_unique<Rail>("vddr1", std::move(configuration),
	std::move(sensorMonitoring));

	// Create Device that contains Rail
	auto i2cInterface = std::make_unique<i2c::MockedI2CInterface>();
	std::unique_ptr<PresenceDetection> presenceDetection{};
	std::unique_ptr<Configuration> deviceConfiguration{};
	std::unique_ptr<PhaseFaultDetection> phaseFaultDetection{};
	std::vector<std::unique_ptr<Rail>> rails{};
	rails.emplace_back(std::move(rail));
	auto device = std::make_unique<Device>(
	"reg1", true,
	"/xyz/openbmc_project/inventory/system/chassis/motherboard/reg1",
	std::move(i2cInterface), std::move(presenceDetection),
	std::move(deviceConfiguration), std::move(phaseFaultDetection),
	std::move(rails));

	// Create Chassis that contains Device
	std::vector<std::unique_ptr<Device>> devices{};
	devices.emplace_back(std::move(device));
	auto chassis = std::make_unique<Chassis>(1, chassisInvPath,
	std::move(devices));

	// Create System that contains Chassis
	std::vector<std::unique_ptr<Rule>> rules{};
	std::vector<std::unique_ptr<Chassis>> chassisVec{};
	chassisVec.emplace_back(std::move(chassis));
	System system{std::move(rules), std::move(chassisVec)};

	// Create lambda that sets MockServices expectations. The lambda allows
	// us to set expectations multiple times without duplicate code.
	auto setExpectations = [](MockServices& services) {
	// Expect Sensors service to be called 10 times
	MockSensors& sensors = services.getMockSensors();
	EXPECT_CALL(sensors, startRail).Times(10);
	EXPECT_CALL(sensors, setValue).Times(0);
	EXPECT_CALL(sensors, endRail).Times(10);

	// Expect Journal service to be called 6 times to log error messages
	MockJournal& journal = services.getMockJournal();
	EXPECT_CALL(journal, logError(A<const std::vector<std::string>&>()))
	.Times(6);
	EXPECT_CALL(journal, logError(A<const std::string&>())).Times(6);

	// Expect ErrorLogging service to be called once to log a DBus error
	MockErrorLogging& errorLogging = services.getMockErrorLogging();
	EXPECT_CALL(errorLogging, logDBusError).Times(1);
	};

	// Monitor sensors 10 times. Verify errors logged.
	{
	// Create mock services. Set expectations via lambda.
	MockServices services{};
	setExpectations(services);

	for (int i = 1; i <= 10; ++i)
	{
	system.monitorSensors(services);
	}
	}

	// Clear error history
	system.clearErrorHistory();

	// Monitor sensors 10 more times. Verify errors logged again.
	{
	// Create mock services. Set expectations via lambda.
	MockServices services{};
	setExpectations(services);

	for (int i = 1; i <= 10; ++i)
	{
	system.monitorSensors(services);
	}
	}
	}

	TEST(SystemTests, CloseDevices)
	{
	// Specify an empty rules vector
	std::vector<std::unique_ptr<Rule>> rules{};

	// Create mock services. Expect logDebug() to be called.
	MockServices services{};
	MockJournal& journal = services.getMockJournal();
	EXPECT_CALL(journal, logDebug("Closing devices in chassis 1")).Times(1);
	EXPECT_CALL(journal, logDebug("Closing devices in chassis 3")).Times(1);
	EXPECT_CALL(journal, logInfo(A<const std::string&>())).Times(0);
	EXPECT_CALL(journal, logError(A<const std::string&>())).Times(0);

	// Create Chassis
	std::vector<std::unique_ptr<Chassis>> chassis{};
	chassis.emplace_back(std::make_unique<Chassis>(1, chassisInvPath + '1'));
	chassis.emplace_back(std::make_unique<Chassis>(3, chassisInvPath + '3'));

	// Create System
	System system{std::move(rules), std::move(chassis)};

	// Call closeDevices()
	system.closeDevices(services);
	}

	TEST(SystemTests, Configure)
	{
	// Create mock services. Expect logInfo() to be called.
	MockServices services{};
	MockJournal& journal = services.getMockJournal();
	EXPECT_CALL(journal, logInfo("Configuring chassis 1")).Times(1);
	EXPECT_CALL(journal, logInfo("Configuring chassis 3")).Times(1);
	EXPECT_CALL(journal, logDebug(A<const std::string&>())).Times(0);
	EXPECT_CALL(journal, logError(A<const std::string&>())).Times(0);

	// Specify an empty rules vector
	std::vector<std::unique_ptr<Rule>> rules{};

	// Create Chassis
	std::vector<std::unique_ptr<Chassis>> chassis{};
	chassis.emplace_back(std::make_unique<Chassis>(1, chassisInvPath + '1'));
	chassis.emplace_back(std::make_unique<Chassis>(3, chassisInvPath + '3'));

	// Create System
	System system{std::move(rules), std::move(chassis)};

	// Call configure()
	system.configure(services);
	}

	TEST(SystemTests, DetectPhaseFaults)
	{
	// Create mock services with the following expectations:
	// - 2 error messages in journal for N phase fault detected in reg0
	// - 2 error messages in journal for N phase fault detected in reg1
	// - 1 N phase fault error logged for reg0
	// - 1 N phase fault error logged for reg1
	MockServices services{};
	MockJournal& journal = services.getMockJournal();
	EXPECT_CALL(journal,
	logError("n phase fault detected in regulator reg0: count=1"))
	.Times(1);
	EXPECT_CALL(journal,
	logError("n phase fault detected in regulator reg0: count=2"))
	.Times(1);
	EXPECT_CALL(journal,
	logError("n phase fault detected in regulator reg1: count=1"))
	.Times(1);
	EXPECT_CALL(journal,
	logError("n phase fault detected in regulator reg1: count=2"))
	.Times(1);
	MockErrorLogging& errorLogging = services.getMockErrorLogging();
	EXPECT_CALL(errorLogging, logPhaseFault).Times(2);

	std::vector<std::unique_ptr<Chassis>> chassisVec{};

	// Create Chassis 1 with regulator reg0
	{
	// Create PhaseFaultDetection
	auto action = std::make_unique<LogPhaseFaultAction>(PhaseFaultType::n);
	std::vector<std::unique_ptr<Action>> actions{};
	actions.push_back(std::move(action));
	auto phaseFaultDetection =
	std::make_unique<PhaseFaultDetection>(std::move(actions));

	// Create Device
	auto i2cInterface = std::make_unique<i2c::MockedI2CInterface>();
	std::unique_ptr<PresenceDetection> presenceDetection{};
	std::unique_ptr<Configuration> configuration{};
	auto device = std::make_unique<Device>(
	"reg0", true,
	"/xyz/openbmc_project/inventory/system/chassis1/motherboard/"
	"reg0",
	std::move(i2cInterface), std::move(presenceDetection),
	std::move(configuration), std::move(phaseFaultDetection));

	// Create Chassis
	std::vector<std::unique_ptr<Device>> devices{};
	devices.emplace_back(std::move(device));
	auto chassis = std::make_unique<Chassis>(1, chassisInvPath + '1',
	std::move(devices));
	chassisVec.emplace_back(std::move(chassis));
	}

	// Create Chassis 2 with regulator reg1
	{
	// Create PhaseFaultDetection
	auto action = std::make_unique<LogPhaseFaultAction>(PhaseFaultType::n);
	std::vector<std::unique_ptr<Action>> actions{};
	actions.push_back(std::move(action));
	auto phaseFaultDetection =
	std::make_unique<PhaseFaultDetection>(std::move(actions));

	// Create Device
	auto i2cInterface = std::make_unique<i2c::MockedI2CInterface>();
	std::unique_ptr<PresenceDetection> presenceDetection{};
	std::unique_ptr<Configuration> configuration{};
	auto device = std::make_unique<Device>(
	"reg1", true,
	"/xyz/openbmc_project/inventory/system/chassis2/motherboard/"
	"reg1",
	std::move(i2cInterface), std::move(presenceDetection),
	std::move(configuration), std::move(phaseFaultDetection));

	// Create Chassis
	std::vector<std::unique_ptr<Device>> devices{};
	devices.emplace_back(std::move(device));
	auto chassis = std::make_unique<Chassis>(2, chassisInvPath + '2',
	std::move(devices));
	chassisVec.emplace_back(std::move(chassis));
	}

	// Create System that contains Chassis
	std::vector<std::unique_ptr<Rule>> rules{};
	System system{std::move(rules), std::move(chassisVec)};

	// Call detectPhaseFaults() 5 times
	for (int i = 1; i <= 5; ++i)
	{
	system.detectPhaseFaults(services);
	}
	}

	TEST(SystemTests, GetChassis)
	{
	// Specify an empty rules vector
	std::vector<std::unique_ptr<Rule>> rules{};

	// Create Chassis
	std::vector<std::unique_ptr<Chassis>> chassis{};
	chassis.emplace_back(std::make_unique<Chassis>(1, chassisInvPath + '1'));
	chassis.emplace_back(std::make_unique<Chassis>(3, chassisInvPath + '3'));

	// Create System
	System system{std::move(rules), std::move(chassis)};
	EXPECT_EQ(system.getChassis().size(), 2);
	EXPECT_EQ(system.getChassis()[0]->getNumber(), 1);
	EXPECT_EQ(system.getChassis()[1]->getNumber(), 3);
	}

	TEST(SystemTests, GetIDMap)
	{
	// Create Rules
	std::vector<std::unique_ptr<Rule>> rules{};
	rules.emplace_back(createRule("set_voltage_rule"));
	rules.emplace_back(createRule("read_sensors_rule"));

	// Create Chassis
	std::vector<std::unique_ptr<Chassis>> chassis{};
	{
	// Chassis 1
	std::vector<std::unique_ptr<Device>> devices{};
	devices.emplace_back(createDevice("reg1", {"rail1"}));
	devices.emplace_back(createDevice("reg2", {"rail2a", "rail2b"}));
	chassis.emplace_back(std::make_unique<Chassis>(1, chassisInvPath + '1',
	std::move(devices)));
	}
	{
	// Chassis 2
	std::vector<std::unique_ptr<Device>> devices{};
	devices.emplace_back(createDevice("reg3", {"rail3a", "rail3b"}));
	devices.emplace_back(createDevice("reg4"));
	chassis.emplace_back(std::make_unique<Chassis>(2, chassisInvPath + '2',
	std::move(devices)));
	}

	// Create System
	System system{std::move(rules), std::move(chassis)};
	const IDMap& idMap = system.getIDMap();

	// Verify all Rules are in the IDMap
	EXPECT_NO_THROW(idMap.getRule("set_voltage_rule"));
	EXPECT_NO_THROW(idMap.getRule("read_sensors_rule"));
	EXPECT_THROW(idMap.getRule("set_voltage_rule2"), std::invalid_argument);

	// Verify all Devices are in the IDMap
	EXPECT_NO_THROW(idMap.getDevice("reg1"));
	EXPECT_NO_THROW(idMap.getDevice("reg2"));
	EXPECT_NO_THROW(idMap.getDevice("reg3"));
	EXPECT_NO_THROW(idMap.getDevice("reg4"));
	EXPECT_THROW(idMap.getDevice("reg5"), std::invalid_argument);

	// Verify all Rails are in the IDMap
	EXPECT_NO_THROW(idMap.getRail("rail1"));
	EXPECT_NO_THROW(idMap.getRail("rail2a"));
	EXPECT_NO_THROW(idMap.getRail("rail2b"));
	EXPECT_NO_THROW(idMap.getRail("rail3a"));
	EXPECT_NO_THROW(idMap.getRail("rail3b"));
	EXPECT_THROW(idMap.getRail("rail4"), std::invalid_argument);
	}

	TEST(SystemTests, GetRules)
	{
	// Create Rules
	std::vector<std::unique_ptr<Rule>> rules{};
	rules.emplace_back(createRule("set_voltage_rule"));
	rules.emplace_back(createRule("read_sensors_rule"));

	// Create Chassis
	std::vector<std::unique_ptr<Chassis>> chassis{};
	chassis.emplace_back(std::make_unique<Chassis>(1, chassisInvPath));

	// Create System
	System system{std::move(rules), std::move(chassis)};
	EXPECT_EQ(system.getRules().size(), 2);
	EXPECT_EQ(system.getRules()[0]->getID(), "set_voltage_rule");
	EXPECT_EQ(system.getRules()[1]->getID(), "read_sensors_rule");
	}

	TEST(SystemTests, MonitorSensors)
	{
	// Create mock services. Set Sensors service expectations.
	MockServices services{};
	MockSensors& sensors = services.getMockSensors();
	EXPECT_CALL(sensors, startRail("c1_vdd0",
	"/xyz/openbmc_project/inventory/system/"
	"chassis1/motherboard/vdd0_reg",
	chassisInvPath + '1'))
	.Times(1);
	EXPECT_CALL(sensors, startRail("c2_vdd0",
	"/xyz/openbmc_project/inventory/system/"
	"chassis2/motherboard/vdd0_reg",
	chassisInvPath + '2'))
	.Times(1);
	EXPECT_CALL(sensors, setValue).Times(0);
	EXPECT_CALL(sensors, endRail(false)).Times(2);

	std::vector<std::unique_ptr<Chassis>> chassisVec{};

	// Create Chassis 1
	{
	// Create SensorMonitoring for Rail
	auto action = std::make_unique<MockAction>();
	EXPECT_CALL(*action, execute).Times(1).WillOnce(Return(true));
	std::vector<std::unique_ptr<Action>> actions{};
	actions.emplace_back(std::move(action));
	auto sensorMonitoring =
	std::make_unique<SensorMonitoring>(std::move(actions));

	// Create Rail
	std::unique_ptr<Configuration> configuration{};
	auto rail = std::make_unique<Rail>("c1_vdd0", std::move(configuration),
	std::move(sensorMonitoring));

	// Create Device
	auto i2cInterface = std::make_unique<i2c::MockedI2CInterface>();
	std::unique_ptr<PresenceDetection> presenceDetection{};
	std::unique_ptr<Configuration> deviceConfiguration{};
	std::unique_ptr<PhaseFaultDetection> phaseFaultDetection{};
	std::vector<std::unique_ptr<Rail>> rails{};
	rails.emplace_back(std::move(rail));
	auto device = std::make_unique<Device>(
	"c1_vdd0_reg", true,
	"/xyz/openbmc_project/inventory/system/chassis1/motherboard/"
	"vdd0_reg",
	std::move(i2cInterface), std::move(presenceDetection),
	std::move(deviceConfiguration), std::move(phaseFaultDetection),
	std::move(rails));

	// Create Chassis
	std::vector<std::unique_ptr<Device>> devices{};
	devices.emplace_back(std::move(device));
	auto chassis = std::make_unique<Chassis>(1, chassisInvPath + '1',
	std::move(devices));
	chassisVec.emplace_back(std::move(chassis));
	}

	// Create Chassis 2
	{
	// Create SensorMonitoring for Rail
	auto action = std::make_unique<MockAction>();
	EXPECT_CALL(*action, execute).Times(1).WillOnce(Return(true));
	std::vector<std::unique_ptr<Action>> actions{};
	actions.emplace_back(std::move(action));
	auto sensorMonitoring =
	std::make_unique<SensorMonitoring>(std::move(actions));

	// Create Rail
	std::unique_ptr<Configuration> configuration{};
	auto rail = std::make_unique<Rail>("c2_vdd0", std::move(configuration),
	std::move(sensorMonitoring));

	// Create Device
	auto i2cInterface = std::make_unique<i2c::MockedI2CInterface>();
	std::unique_ptr<PresenceDetection> presenceDetection{};
	std::unique_ptr<Configuration> deviceConfiguration{};
	std::unique_ptr<PhaseFaultDetection> phaseFaultDetection{};
	std::vector<std::unique_ptr<Rail>> rails{};
	rails.emplace_back(std::move(rail));
	auto device = std::make_unique<Device>(
	"c2_vdd0_reg", true,
	"/xyz/openbmc_project/inventory/system/chassis2/motherboard/"
	"vdd0_reg",
	std::move(i2cInterface), std::move(presenceDetection),
	std::move(deviceConfiguration), std::move(phaseFaultDetection),
	std::move(rails));

	// Create Chassis
	std::vector<std::unique_ptr<Device>> devices{};
	devices.emplace_back(std::move(device));
	auto chassis = std::make_unique<Chassis>(2, chassisInvPath + '2',
	std::move(devices));
	chassisVec.emplace_back(std::move(chassis));
	}

	// Create System that contains Chassis
	std::vector<std::unique_ptr<Rule>> rules{};
	System system{std::move(rules), std::move(chassisVec)};

	// Call monitorSensors()
	system.monitorSensors(services);
	}