public function testPositiveDuration() { $duration = new QtiDuration('P3Y4DT6H8M'); // 2 years, 4 days, 6 hours, 8 minutes. $this->assertEquals(3, $duration->getYears()); $this->assertEquals(4, $duration->getDays()); $this->assertEquals(6, $duration->getHours()); $this->assertEquals(8, $duration->getMinutes()); $this->assertEquals(0, $duration->getMonths()); $this->assertEquals(0, $duration->getSeconds()); }