public function testSettingTimezoneWithString()
{
$timezone = 'Asia/Tokyo';
$dtz = new \DateTimeZone($timezone);
$dt = new \DateTime('now', $dtz);
$dayLightSavingTimeOffset = (int) $dt->format('I');
$c = new Date('now', $timezone);
$this->assertSame($timezone, $c->getTimezoneName());
$this->assertSame(9 + $dayLightSavingTimeOffset, $c->getOffsetHours());
}