public function testGetExistingWireReturnsAWireObject()
{
$wire = new Wire('a');
$circuit = new Circuit();
$circuit->addWire($wire);
$this->assertInstanceOf('Wire', $circuit->getWire('a'));
}
break;
case 'LSHIFT':
$wire1 = $circuit->getWire($cmd['wires'][0]);
if ($wire1 === false) {
break;
}
$result = $wire1->getSignal() << (int) $cmd['value'];
break;
case 'RSHIFT':
$wire1 = $circuit->getWire($cmd['wires'][0]);
if ($wire1 === false) {
break;
}
$result = $wire1->getSignal() >> (int) $cmd['value'];
break;
case 'NOT':
$wire1 = $circuit->getWire($cmd['wires'][0]);
if ($wire1 === false) {
break;
}
$result = ~$wire1->getSignal();
break;
}
if ($result !== false) {
$assignee->setSignal($result);
$circuit->addWire($assignee);
$processedIndexes[] = $key;
}
}
} while (count($lines) > count($processedIndexes) && ++$loopCount < 1000);
echo 'Answer: A: ' . $circuit->getWire('a')->getSignal() . PHP_EOL;