package ch.epfl.alpano;

import static org.junit.Assert.*;

import org.junit.Test;

public class GeoPointTest {

	@Test(expected = IllegalArgumentException.class)
	public void constructorLimitTest1(){
		new GeoPoint(0, 2*Math.PI);
	}
	
	@Test(expected = IllegalArgumentException.class)
    public void constructorLimitTest2(){
        new GeoPoint(2*Math.PI, 2*Math.PI);
    }
	
	@Test(expected = IllegalArgumentException.class)
    public void constructorLimitTest3(){
        new GeoPoint(2*Math.PI, 0);
    }
	
	@Test
	public void distanceToTest1(){
		GeoPoint london = new GeoPoint(Math.toRadians(6.631), Math.toRadians(46.521));
		GeoPoint moscow = new GeoPoint( Math.toRadians(37.623), Math.toRadians(55.753));
		assertEquals(2367000,  london.distanceTo(moscow), 1000);//1km imprecision
		assertEquals(0,london.azimuthTo(london),0);
	}
	
	@Test
    public void distanceToTest2(){
        GeoPoint epfl = new GeoPoint(Math.toRadians(6.56730), Math.toRadians(46.51781));
        GeoPoint eiler = new GeoPoint( Math.toRadians(8.00537), Math.toRadians(46.57756));
        assertEquals(110294,  epfl.distanceTo(eiler), 150);//150M imprecision
    }
	
	@Test
    public void distanceToTest3(){
        GeoPoint p1 = new GeoPoint(Math.PI,Math.PI/2.0);
        GeoPoint p2 = new GeoPoint(Math.PI,Math.PI/2.0);
        GeoPoint p3 = new GeoPoint(0,Math.PI/2.0);
        GeoPoint p4 = new GeoPoint(Math.PI/10.0,Math.PI/2.0);
        assertEquals(p3.distanceTo(p4),  p4.distanceTo(p3), 10);
        assertEquals(p2.distanceTo(p1),  p1.distanceTo(p2), 10);
        assertEquals(p3.distanceTo(p4),  p1.distanceTo(p2), 10);
    }
	
	@Test
    public void distanceToTest4(){
        GeoPoint p1 = new GeoPoint(Math.PI/2.0,Math.PI/2.0);
        GeoPoint p2 = new GeoPoint(-Math.PI/2.0,Math.PI/2.0);
        GeoPoint p3 = new GeoPoint(-Math.PI/2.0,Math.PI/2.0);
        GeoPoint p4 = new GeoPoint(Math.PI/10.0,Math.PI/2.0);
        assertEquals(p3.distanceTo(p4),  p4.distanceTo(p3), 10);
        assertEquals(p2.distanceTo(p1),  p1.distanceTo(p2), 10);
        assertEquals(p3.distanceTo(p4),  p1.distanceTo(p2), 10);
    }
	
	
	@Test 
	public void toStringTest(){
		GeoPoint g = new GeoPoint(Math.toRadians(-7.6543),  Math.toRadians(54.3210));
		assertEquals("(-7.6543,54.3210)", g.toString());
	}

}