public function testGetSetActiveDateEmptyString()
 {
     $expectedDate = OPGDateFormat::createDateTime(date(OPGDateFormat::getDateFormat() . ' 00:00:00'));
     $this->assertEmpty($this->task->getDateAsString('activeDate'));
     $this->task->setDateTimeFromString($expectedDate->format(OPGDateFormat::getDateTimeFormat()), 'activeDate');
     $returnedDate = $this->task->getActiveDate();
     $this->assertEquals($expectedDate->format(OPGDateFormat::getDateTimeFormat()), $returnedDate->format(OPGDateFormat::getDateTimeFormat()));
 }