/**
* @test
* @covers ::getSignal
* @covers \Hamdrew\AdventOfCode\Day7\CircuitComponent::getSignal
* @covers \Hamdrew\AdventOfCode\Day7\CircuitComponent::setSignal
*/
public function returnsCachedSignal()
{
$signal = 123;
$source = \Mockery::mock('\\Hamdrew\\AdventOfCode\\Day7\\CircuitComponent')->shouldReceive('getSignal')->andReturn($signal)->once()->getMock();
$wire = new Wire('test', $source);
$wire->getSignal();
$this->assertSame($signal, $wire->getSignal());
}
/**
* @inheritDoc
*/
public function getSignal()
{
$signal = parent::getSignal();
if (is_null($signal)) {
$input = $this->source->getSignal();
if (!is_null($input)) {
$signal = SixteenBitMask::mask(~$input);
$this->setSignal($signal);
}
}
return $signal;
}
public function testCanSetAndGetSignal()
{
$wire = new Wire('a');
$wire->setSignal(123);
$this->assertEquals(123, $wire->getSignal());
}
