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}
@Test
public void test_getDifference() throws Exception {
Point p1 = new Point(100, 100);
Point p2 = new Point(50, 70);
assertEquals(new Point(-50, -30), p1.getDifference(p2));
p2 = new Point(150, 70);
assertEquals(new Point(50, -30), p1.getDifference(p2));
p2 = new Point(50, 170);
assertEquals(new Point(-50, 70), p1.getDifference(p2));
p2 = new Point(150, 170);
assertEquals(new Point(50, 70), p1.getDifference(p2));
public void test_getDistance() {
Point p = new Point(4, 3);
assertTrue(PrecisionUtils.equal(p.getDistance(new Point()), 5));