class ComparisonFailure

final class ComparisonFailure extends RuntimeException {
    private mixed $expected;
    private mixed $actual;
    private string $expectedAsString;
    private string $actualAsString;
    public function __construct(mixed $expected, mixed $actual, string $expectedAsString, string $actualAsString, string $message = '') {
        parent::__construct($message);
        $this->expected = $expected;
        $this->actual = $actual;
        $this->expectedAsString = $expectedAsString;
        $this->actualAsString = $actualAsString;
    }
    public function getActual() : mixed {
        return $this->actual;
    }
    public function getExpected() : mixed {
        return $this->expected;
    }
    public function getActualAsString() : string {
        return $this->actualAsString;
    }
    public function getExpectedAsString() : string {
        return $this->expectedAsString;
    }
    public function getDiff() : string {
        if (!$this->actualAsString && !$this->expectedAsString) {
            return '';
        }
        $differ = new Differ(new UnifiedDiffOutputBuilder("\n--- Expected\n+++ Actual\n"));
        return $differ->diff($this->expectedAsString, $this->actualAsString);
    }
    public function toString() : string {
        return $this->getMessage() . $this->getDiff();
    }

}