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<?php declare(strict_types=1);
namespace Stratadox\Proxy\When;
use Stratadox\Specification\Contract\Satisfiable;
/**
* When\KeyMatches. Constraint to check if the known data contains a particular
* key/value pair.
*
* @author Stratadox
*/
final class KeyMatches implements Satisfiable
{
private $key;
private $value;
private function __construct(string $key, $value)
$this->key = $key;
$this->value = $value;
}
* Produces a constraint that is satisfied with data that contains this
* particular key/value pair.
* @param string $key The key to look for.
* @param mixed $value The value that is expected.
* @return Satisfiable The constraint.
public static function with(string $key, $value): Satisfiable
return new self($key, $value);
/** @inheritdoc */
public function isSatisfiedBy($knownData): bool
return ($knownData[$this->key] ?? null) === $this->value;
Stratadox /
Proxy
