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<?php
declare(strict_types = 1);
namespace DummyGenerator\Strategy;
class UniqueStrategy implements StrategyInterface
{
/**
* Contains all previously generated values, keyed by the Extension's function name.
*
* @var array<string, array<string, null>>
*/
private array $previous = [];
* With the unique generator you are guaranteed to never get the same two
* values.
* <code>
* // will never return twice the same value
* $generator->randomElement(array(1, 2, 3));
* </code>
* @param int $retries Maximum number of retries to find a unique value,
* After which an OverflowException is thrown.
public function __construct(private readonly int $retries)
}
public function generate(string $name, callable $callback): mixed
if (!isset($this->previous[$name])) {
$this->previous[$name] = [];
$tries = 0;
do {
$response = $callback();
++$tries;
if ($tries > $this->retries) {
throw new \OverflowException(sprintf('Maximum retries of %d reached without finding a unique value', $this->retries));
} while (array_key_exists(serialize($response), $this->previous[$name]));
$this->previous[$name][serialize($response)] = null;
return $response;
johnykvsky /
dummygenerator
