public void SelectProjectAndArm_alternates_blinking_project_and_arm()
 {
     _sut.BlinkProjectAndArm();
     AssertIndicators("P");
     _sut.BlinkProjectAndArm();
     AssertIndicators("R");
     _sut.BlinkProjectAndArm();
     AssertIndicators("P");
     _sut.BlinkProjectAndArm();
     AssertIndicators("R");
 }