for testing and deploying your application
for finding and fixing issues
for empowering human code reviews
<?php declare(strict_types=1);
namespace Pitchart\Phlunit\Constraint\Arrays;
use PHPUnit\Framework\Constraint\Constraint;
use function Pitchart\Transformer\transform;
final class IsSubset extends Constraint
{
/**
* @var iterable
*/
private $set;
public function __construct(iterable $set)
$this->set = $set;
}
* @param iterable $other
* @param string $description
* @param bool $returnResult
*
* @return bool
public function evaluate($other, string $description = '', bool $returnResult = false): ?bool
$other = ArrayUtility::toArray($other);
$set = ArrayUtility::toArray($this->set);
if (ArrayUtility::isAssociative($other)) {
$result = \array_diff_assoc($other, $set) === [];
} else {
$result = transform($other)->diff($set)->toArray() === [];
if (!$returnResult && !$result) {
$this->fail($other, $description);
return $result;
* @return string
public function toString(): string
return ' is a subset of ' . $this->exporter()->export($this->set);
protected function failureDescription($other): string
return $this->exporter()->export($other) . $this->toString();
pitchart /
phlunit
