@Test
public void equalsTest() {

	Objective o1 = new Objective("obj1", Sign.MAX);
	Objective o11 = new Objective("obj1", Sign.MAX);
	Objective o2 = new Objective("obj2", Sign.MAX);
	Objective o3 = new Objective("obj1", Sign.MIN);
	Objective o4 = new Objective(null, Sign.MAX);
	Objective o5 = new Objective(null, Sign.MAX);
	Assert.assertEquals(o1, o1);
	Assert.assertEquals(o1, o11);
	Assert.assertEquals(o4, o5);
	Assert.assertNotEquals(o1, null);
	Assert.assertNotEquals(o1, "something else");
	Assert.assertNotEquals(o1, o2);
	Assert.assertNotEquals(o1, o3);
	Assert.assertNotEquals(o4, o3);
}