Add SpeedControllerGroup (#362)

wpilibcIntegrationTests/src/FRCUserProgram/headers/MockSpeedController.h

@@ -0,0 +1,30 @@
+/*----------------------------------------------------------------------------*/
+/* Copyright (c) 2017 FIRST. All Rights Reserved.                             */
+/* Open Source Software - may be modified and shared by FRC teams. The code   */
+/* must be accompanied by the FIRST BSD license file in the root directory of */
+/* the project.                                                               */
+/*----------------------------------------------------------------------------*/
+
+#pragma once
+
+#include "SpeedController.h"
+
+namespace frc {
+
+class MockSpeedController : public SpeedController {
+ public:
+  void Set(double speed) override;
+  double Get() const override;
+  void SetInverted(bool isInverted) override;
+  bool GetInverted() const override;
+  void Disable() override;
+  void StopMotor() override;
+
+  void PIDWrite(double output) override;
+
+ private:
+  double m_speed = 0.0;
+  bool m_isInverted = false;
+};
+
+}  // namespace frc