@Test
public void testEquals() {

  // couple of equals validity tests
  final Line3 line1 = new Line3();
  assertEquals(line1, line1);
  assertFalse(line1.equals(null));
  // throw in a couple pool accesses for coverage
  final Line3 line2 = Line3.fetchTempInstance();
  line2.set(line1);
  assertEquals(line1, line2);
  assertNotSame(line1, line2);
  Line3.releaseTempInstance(line2);
  // cover more of equals
  assertFalse(line1.equals(new Line3(Vector3.ZERO, Vector3.UNIT_X)));
}