public function testFieldCrud()
{
$uuid = new Uuid('b8fc7a3e-0331-11e4-9583-080027f3add4');
$this->assertTrue($uuid->isValid());
$this->assertEquals('9583', $uuid->getField('clock_seq'));
$uuid->setField('clock_seq', 'ffff');
$this->assertEquals($uuid->toFormat(new PlainString()), 'b8fc7a3e-0331-11e4-ffff-080027f3add4');
}
/**
* @param string $byte A single byte
* @return string
*/
protected function setVariantByte($byte)
{
$bin = hex2bin($this->uuid->getField('clock_seq'));
$bin[0] = $byte;
$this->uuid->setField('clock_seq', bin2hex($bin));
}