package jrummikub.util;

import static org.junit.Assert.*;

import org.junit.Test;

public class Event1Test {

	int fired, fired2;

	@Test
	public void singleListener() {
		fired = 0;
		Event1<Integer> testEvent = new Event1<Integer>();
		testEvent.add(new IListener1<Integer>() {

			@Override
			public void fire(Integer n) {
				fired += n;

			}
		});
		assertEquals(fired, 0);
		testEvent.fire(10);
		assertEquals(fired, 10);
		testEvent.fire(20);
		assertEquals(fired, 30);
	}

	@Test
	public void twoListeners() {
		fired = 0;
		fired2 = 0;
		Event1<Integer> testEvent = new Event1<Integer>();
		testEvent.add(new IListener1<Integer>() {

			@Override
			public void fire(Integer n) {
				fired += n;

			}
		});
		testEvent.add(new IListener1<Integer>() {

			@Override
			public void fire(Integer n) {
				fired2 -= n;

			}
		});
		assertEquals(fired, 0);
		assertEquals(fired2, 0);
		testEvent.fire(5);
		assertEquals(fired, 5);
		assertEquals(fired2, -5);

	}
	
	@Test public void removeListener() {
		fired = 0;
		Event1<Integer> testEvent = new Event1<Integer>();
		testEvent.add(new IListener1<Integer>() {

			@Override
			public void fire(Integer n) {
				fired += n;

			}
		});
		IListener1<Integer> rem = new IListener1<Integer>() {
			
			@Override
			public void fire(Integer n) {
				fail();
			}
		};
		testEvent.add(rem);
		testEvent.remove(rem);
		testEvent.fire(10);
		assertEquals(fired, 10);
	}
}