public function testCreateFromTimestampWithString()
 {
     $d = IntlCarbon::createFromTimestamp(0, 'UTC');
     $this->assertIntlCarbon($d, 1970, 1, 1, 0, 0, 0);
     $this->assertSame(0, $d->offset);
     $this->assertSame('UTC', $d->tzName);
 }