public function testGetStringWithUTC()
{
$this->rule->setFreq('DAILY');
$this->rule->setInterval(1);
$this->rule->setUntil(new \DateTime('2015-07-10 04:00:00', new \DateTimeZone('America/New_York')));
$this->assertNotEquals('FREQ=DAILY;UNTIL=20150710T040000Z;INTERVAL=1', $this->rule->getString());
$this->assertEquals('FREQ=DAILY;UNTIL=20150710T080000Z;INTERVAL=1', $this->rule->getString(Rule::TZ_FIXED));
}