/** * Test: get_date_completed */ function test_get_date_completed() { $object = new WC_Order(); $object->set_date_completed('2016-12-12'); $this->assertEquals('1481500800', $object->get_date_completed()); $object->set_date_completed('1481500800'); $this->assertEquals(1481500800, $object->get_date_completed()); }