package ch.epfl.alpano;

import static org.junit.Assert.*;

import org.junit.Test;

import ch.epfl.alpano.dem.ContinuousElevationModel;
import ch.epfl.alpano.dem.ElevationProfile;

public class PanoramaCompTest {

    @Test(expected = NullPointerException.class)
    public void throwsNullPointerUponConstruction(){
        new PanoramaComputer(null);
    }
    
    @Test
    public void givesTrivialZero(){
        
        
        double zero =PanoramaComputer.rayToGroundDistance(
                
                new ElevationProfile( new ContinuousElevationModel(new TestDemForPanoramaComp(new Interval2D(new Interval1D(-100, 100),
                                 new Interval1D(-100, 100)))),
                new GeoPoint(0,0),2.5,100), 0.0, 0.0).applyAsDouble(
                        1);
        
        assertEquals(0, zero,0.01);
        
        
    }
    @Test(expected = IllegalArgumentException.class)
    public void throwsIllegalArgumentExceptionOnNegValues(){
        double zero =PanoramaComputer.rayToGroundDistance(
                
                new ElevationProfile( new ContinuousElevationModel(new TestDemForPanoramaComp(new Interval2D(new Interval1D(-100, 100),
                                 new Interval1D(-100, 100)))),
                new GeoPoint(0,0),0,100), 0.0, 1.0).applyAsDouble(
                        -50);
        
        assertEquals(0, zero,0);
    }
    

}