public void testIsLessThan() { assertEquals(false, Minutes.THREE.isLessThan(Minutes.TWO)); assertEquals(false, Minutes.THREE.isLessThan(Minutes.THREE)); assertEquals(true, Minutes.TWO.isLessThan(Minutes.THREE)); assertEquals(false, Minutes.ONE.isLessThan(null)); assertEquals(true, Minutes.minutes(-1).isLessThan(null)); }