SpeedResistancePowerMapperTest.java

import org.cowboycoders.turbotrainers.bushido.brake.BrakeModel;
import org.cowboycoders.turbotrainers.bushido.brake.SpeedResistancePowerMapper;
import org.cowboycoders.turbotrainers.bushido.brake.TargetSlopeModel;
import org.junit.Test;

import static org.junit.Assert.assertEquals;

/**
 *
 */

/**
 * @author doug
 *
 *         Basic test of polynomial speed-resistance map using some known values
 */
public class SpeedResistancePowerMapperTest {

  //Container for brake data
  private BrakeModel dataModel = new TargetSlopeModel();
  private SpeedResistancePowerMapper speedResistancePowerMapper = new SpeedResistancePowerMapper();

  /**
   * Test method for
   * {@link org.cowboycoders.turbotrainers.bushido.brake.SpeedResistanceMapper#getBrakeResistanceFromPolynomialFit()}.
   */
  @Test
  public void testGetBrakeResistanceFromPolynomialFit() {

    this.speedResistancePowerMapper.start(dataModel);
    double resistance;

    //Big Mig is back and he's doing a time trial; we expect a very hard resistance (500)
    dataModel.setPower(600);
    dataModel.setVirtualSpeed(45);
    resistance = speedResistancePowerMapper.getBrakeResistanceFromSurfaceFit();
    assertEquals(500, resistance, 10);

    //Big Mig is powering up a hill. Should be even harder to force the wheel speed down (750)
    dataModel.setPower(600);
    dataModel.setVirtualSpeed(25);
    resistance = speedResistancePowerMapper.getBrakeResistanceFromSurfaceFit();
    assertEquals(750, resistance, 10);

    //Big Mig is descending. Should be easier than the time trail to get wheel speed up (322)
    dataModel.setPower(600);
    dataModel.setVirtualSpeed(65);
    resistance = speedResistancePowerMapper.getBrakeResistanceFromSurfaceFit();
    assertEquals(322, resistance, 10);

    //Sir Chris Hoy. Should be at the upper limit (1000)
    dataModel.setPower(2483);
    dataModel.setVirtualSpeed(65);
    resistance = speedResistancePowerMapper.getBrakeResistanceFromSurfaceFit();
    assertEquals(1000, resistance, 10);

    //A feeble effort. Should be at the lower limit (250)
    dataModel.setPower(50);
    dataModel.setVirtualSpeed(10);
    resistance = speedResistancePowerMapper.getBrakeResistanceFromSurfaceFit();
    assertEquals(250, resistance, 10);

    //Chris Hoy going backwards on a fixie. Should be at the upper limit (1000)
    dataModel.setPower(2483);
    dataModel.setVirtualSpeed(-10);
    resistance = speedResistancePowerMapper.getBrakeResistanceFromSurfaceFit();
    assertEquals(1000, resistance, 10);

    //Pre-ride faffing. The lowest limit.
    dataModel.setPower(0);
    dataModel.setVirtualSpeed(0);
    resistance = speedResistancePowerMapper.getBrakeResistanceFromSurfaceFit();
    assertEquals(250, resistance, 10);

    //Going slowly up a very steep hill - should default to lower limit
    dataModel.setPower(200);
    dataModel.setVirtualSpeed(8);
    resistance = speedResistancePowerMapper.getBrakeResistanceFromSurfaceFit();
    assertEquals(250, resistance, 10);

    //Going fast up a hill - should be hard but
    //FIXME Is this off the surface fit? It is very hard.
    dataModel.setPower(350);
    dataModel.setVirtualSpeed(8);
    resistance = speedResistancePowerMapper.getBrakeResistanceFromSurfaceFit();
    assertEquals(1000, resistance, 10);

  }

}