Replaced WPILib.h includes in integration tests with the minimum required subheaders to improve compilation times

I ran the benchmark in a tmpfs with an Intel Core i5-2430M. I ran it three times for each combination of build invokation and source tree.

First, I tested "make". For master (eb7d55f), I measured an average of 42.751s with a standard deviation of 0.372s. For this commit, I measured an average of 33.394s with a standard deviation of 0.140s. There was a 9.356s, or 22%, improvement with a total error of 1.3%.

Second, I tested "make -j4". For master (eb7d55f), I measured an average of 21.723s with a standard deviation of 0.158s. For this commit, I measured an average of 16.823s with a standard deviation of 0.340s. There was a 4.900s, or 23%, improvement with a total error of 2.7%.

Change-Id: Idb3adce62ed8ef449360c6583896b6da3565cf58

wpilibc/wpilibC++IntegrationTests/include/TestBench.h

@@ -7,7 +7,7 @@
 
 #pragma once
 
-#include "WPILib.h"
+#include <cstdint>
 
 class TestBench {
  public:

wpilibc/wpilibC++IntegrationTests/include/command/MockCommand.h

@@ -1,6 +1,6 @@
 #pragma once
 
-#include "WPILib.h"
+#include <Commands/Command.h>
 
 class MockCommand : public Command {
  private:

wpilibc/wpilibC++IntegrationTests/src/AnalogLoopTest.cpp

@@ -5,7 +5,11 @@
 /* the project.                                                               */
 /*----------------------------------------------------------------------------*/
 
-#include "WPILib.h"
+#include <AnalogInput.h>
+#include <AnalogOutput.h>
+#include <AnalogTrigger.h>
+#include <Counter.h>
+#include <Timer.h>
 #include "gtest/gtest.h"
 #include "TestBench.h"
 

wpilibc/wpilibC++IntegrationTests/src/AnalogPotentiometerTest.cpp

@@ -5,8 +5,9 @@
 /* the project.                                                               */
 /*----------------------------------------------------------------------------*/
 
-#include "WPILib.h"
-#include "AnalogOutput.h"
+#include <AnalogOutput.h>
+#include <AnalogPotentiometer.h>
+#include <Timer.h>
 #include "TestBench.h"
 #include "gtest/gtest.h"
 

wpilibc/wpilibC++IntegrationTests/src/BuiltInAccelerometerTest.cpp

@@ -5,7 +5,8 @@
 /* the project.                                                               */
 /*----------------------------------------------------------------------------*/
 
-#include "WPILib.h"
+#include <BuiltInAccelerometer.h>
+#include <Timer.h>
 #include "gtest/gtest.h"
 
 static constexpr double kAccelerationTolerance = 0.1;

wpilibc/wpilibC++IntegrationTests/src/CANJaguarTest.cpp

@@ -5,7 +5,12 @@
 /* the project.                                                               */
 /*----------------------------------------------------------------------------*/
 
-#include "WPILib.h"
+#include <AnalogOutput.h>
+#include <DigitalOutput.h>
+#include <CANJaguar.h>
+#include <Relay.h>
+#include <Timer.h>
+#include <WPIErrors.h>
 #include "gtest/gtest.h"
 #include "TestBench.h"
 

wpilibc/wpilibC++IntegrationTests/src/CANTalonTest.cpp

@@ -4,7 +4,8 @@
 /* must be accompanied by the FIRST BSD license file in $(WIND_BASE)/WPILib.  */
 /*----------------------------------------------------------------------------*/
 
-#include "WPILib.h"
+#include <CANTalon.h>
+#include <Timer.h>
 #include "gtest/gtest.h"
 #include "TestBench.h"
 

wpilibc/wpilibC++IntegrationTests/src/ConditionVariableTest.cpp

@@ -1,14 +1,14 @@
-#include "WPILib.h"
 #include "TestBench.h"
 
 #include "HAL/cpp/priority_condition_variable.h"
 #include "HAL/cpp/priority_mutex.h"
 
 #include "gtest/gtest.h"
+#include <atomic>
+#include <chrono>
 #include <condition_variable>
 #include <mutex>
 #include <thread>
-#include <chrono>
 
 namespace wpilib {
 namespace testing {

wpilibc/wpilibC++IntegrationTests/src/CounterTest.cpp

@@ -5,7 +5,11 @@
 /* the project.                                                               */
 /*----------------------------------------------------------------------------*/
 
-#include "WPILib.h"
+#include <Counter.h>
+#include <Jaguar.h>
+#include <Talon.h>
+#include <Timer.h>
+#include <Victor.h>
 #include "gtest/gtest.h"
 #include "TestBench.h"
 

wpilibc/wpilibC++IntegrationTests/src/DIOLoopTest.cpp

@@ -5,7 +5,10 @@
 /* the project.                                                               */
 /*----------------------------------------------------------------------------*/
 
-#include "WPILib.h"
+#include <Counter.h>
+#include <DigitalInput.h>
+#include <DigitalOutput.h>
+#include <Timer.h>
 #include "gtest/gtest.h"
 #include "TestBench.h"
 

wpilibc/wpilibC++IntegrationTests/src/FakeEncoderTest.cpp

@@ -6,7 +6,11 @@
 /* the project.                                                               */
 /*----------------------------------------------------------------------------*/
 
-#include "WPILib.h"
+#include <AnalogOutput.h>
+#include <AnalogTrigger.h>
+#include <DigitalOutput.h>
+#include <Encoder.h>
+#include <Timer.h>
 #include "gtest/gtest.h"
 #include "TestBench.h"
 

wpilibc/wpilibC++IntegrationTests/src/MotorEncoderTest.cpp

@@ -5,7 +5,12 @@
 /* the project.                                                               */
 /*----------------------------------------------------------------------------*/
 
-#include "WPILib.h"
+#include <Encoder.h>
+#include <Jaguar.h>
+#include <PIDController.h>
+#include <Talon.h>
+#include <Timer.h>
+#include <Victor.h>
 #include "gtest/gtest.h"
 #include "TestBench.h"
 

wpilibc/wpilibC++IntegrationTests/src/MotorInvertingTest.cpp

@@ -5,7 +5,11 @@
 /* the project.                                                               */
 /*----------------------------------------------------------------------------*/
 
-#include "WPILib.h"
+#include <Encoder.h>
+#include <Jaguar.h>
+#include <Talon.h>
+#include <Timer.h>
+#include <Victor.h>
 #include "gtest/gtest.h"
 #include "TestBench.h"
 

wpilibc/wpilibC++IntegrationTests/src/MutexTest.cpp

@@ -1,11 +1,10 @@
-#include "WPILib.h"
+#include "HAL/cpp/priority_mutex.h"
 #include "TestBench.h"
 
 #include "gtest/gtest.h"
 #include <atomic>
-#include <thread>
-#include "HAL/cpp/priority_mutex.h"
 #include <condition_variable>
+#include <thread>
 
 namespace wpilib {
 namespace testing {

wpilibc/wpilibC++IntegrationTests/src/NotifierTest.cpp

@@ -5,7 +5,8 @@
 /* the project.                                                               */
 /*----------------------------------------------------------------------------*/
 
-#include "WPILib.h"
+#include <Notifier.h>
+#include <Timer.h>
 #include "gtest/gtest.h"
 #include "TestBench.h"
 

wpilibc/wpilibC++IntegrationTests/src/PCMTest.cpp

@@ -5,7 +5,13 @@
 /* the project.                                                               */
 /*----------------------------------------------------------------------------*/
 
-#include "WPILib.h"
+#include <AnalogInput.h>
+#include <Compressor.h>
+#include <DigitalInput.h>
+#include <DigitalOutput.h>
+#include <DoubleSolenoid.h>
+#include <Solenoid.h>
+#include <Timer.h>
 #include "gtest/gtest.h"
 #include "TestBench.h"
 

wpilibc/wpilibC++IntegrationTests/src/PowerDistributionPanelTest.cpp

@@ -5,7 +5,11 @@
 /* the project.                                                               */
 /*----------------------------------------------------------------------------*/
 
-#include "WPILib.h"
+#include <Jaguar.h>
+#include <PowerDistributionPanel.h>
+#include <Talon.h>
+#include <Timer.h>
+#include <Victor.h>
 #include "gtest/gtest.h"
 #include "TestBench.h"
 

wpilibc/wpilibC++IntegrationTests/src/PreferencesTest.cpp

@@ -5,7 +5,8 @@
 /* the project.                                                               */
 /*----------------------------------------------------------------------------*/
 
-#include "WPILib.h"
+#include <Preferences.h>
+#include <Timer.h>
 #include "gtest/gtest.h"
 #include <cstdio>
 #include <fstream>

wpilibc/wpilibC++IntegrationTests/src/RelayTest.cpp

@@ -5,7 +5,9 @@
 /* the project.                                                               */
 /*----------------------------------------------------------------------------*/
 
-#include "WPILib.h"
+#include <DigitalInput.h>
+#include <Relay.h>
+#include <Timer.h>
 #include "gtest/gtest.h"
 #include "TestBench.h"
 #include "Relay.h"

wpilibc/wpilibC++IntegrationTests/src/TestEnvironment.cpp

@@ -5,8 +5,10 @@
 /* the project.                                                               */
 /*----------------------------------------------------------------------------*/
 
+#include <DriverStation.h>
+#include <LiveWindow/LiveWindow.h>
+#include <Timer.h>
 #include "gtest/gtest.h"
-#include "WPILib.h"
 
 class TestEnvironment : public testing::Environment {
   bool m_alreadySetUp = false;

wpilibc/wpilibC++IntegrationTests/src/TiltPanCameraTest.cpp

@@ -5,7 +5,10 @@
 /* the project.                                                               */
 /*----------------------------------------------------------------------------*/
 
-#include "WPILib.h"
+#include <ADXL345_SPI.h>
+#include <Gyro.h>
+#include <Servo.h>
+#include <Timer.h>
 #include "gtest/gtest.h"
 #include "TestBench.h"
 

wpilibc/wpilibC++IntegrationTests/src/TimerTest.cpp

@@ -5,7 +5,7 @@
 /* the project.                                                               */
 /*----------------------------------------------------------------------------*/
 
-#include "WPILib.h"
+#include <Timer.h>
 #include "gtest/gtest.h"
 #include "TestBench.h"
 

wpilibc/wpilibC++IntegrationTests/src/command/CommandTest.cpp

@@ -5,11 +5,14 @@
 /* the project.                                                               */
 /*----------------------------------------------------------------------------*/
 
-#include "WPILib.h"
+#include <Commands/CommandGroup.h>
+#include <Commands/Scheduler.h>
+#include <Commands/Subsystem.h>
+#include <DriverStation.h>
+#include <RobotState.h>
+#include <Timer.h>
 #include "command/MockCommand.h"
 #include "gtest/gtest.h"
-#include "RobotState.h"
-#include "DriverStation.h"
 
 class CommandTest : public testing::Test {
  protected: