public function testWeekend() { $timer = new EmailPlanner(new \DateTime('2015-11-07 11:14:15')); $this->assertEquals($timer->isWeekend(new \DateTime('2015-11-07 11:14:15')), true); $this->assertEquals($timer->isWeekend(new \DateTime('2015-11-06 11:14:15')), false); }