@Test
public void test_constructors() {
Straight s1 = new Straight(new Vector(0, 0), new Vector(3, 3));
Straight s2 = new Straight(new Point(0, 0), new Point(3, 3));
assertTrue(s1.equals(s2));
s1 = new Straight(new Vector(1, 2), new Vector(3, 4));
s2 = new Straight(new Point(1, 2), new Point(3, 4));
assertFalse(s1.equals(s2));
}
@Test
public void test_equals() {
Straight s1 = new Straight(new Vector(0, 0), new Vector(3, 3));
Straight s2 = new Straight(new Vector(4, 4), new Vector(2, 2));
assertTrue(s1.equals(s2));
assertTrue(s2.equals(s1));
assertFalse(s1.equals(new Straight(new Vector(2, 0), s1.direction)));
// wrong type
assertFalse(s1.equals(new Point()));
}