public function testMinus() { $point = new TimePoint(2012, 1, 1, 9, 30); $this->assertEquals(new TimePoint(2009, 1, 1, 9, 30), $point->minus(new Duration(3, TimeUnit::year()))); $this->assertEquals(new TimePoint(2011, 9, 1, 9, 30), $point->minus(new Duration(4, TimeUnit::month()))); $this->assertEquals(new TimePoint(2011, 12, 30, 9, 30), $point->minus(new Duration(2, TimeUnit::day()))); $this->assertEquals(new TimePoint(2012, 1, 1, 6, 30), $point->minus(new Duration(3, TimeUnit::hour()))); $this->assertEquals(new TimePoint(2012, 1, 1, 9, 0), $point->minus(new Duration(30, TimeUnit::minute()))); }
public static function year($value) { return new Duration($value, TimeUnit::year()); }