ScalarComparator.php

<?php

declare (strict_types=1);

/*
 * This file is part of sebastian/comparator.
 *
 * (c) Sebastian Bergmann <sebastian@phpunit.de>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */
namespace SebastianBergmann\Comparator;

use function is_bool;
use function is_object;
use function is_scalar;
use function is_string;
use function mb_strtolower;
use function method_exists;
use function sprintf;
use SebastianBergmann\Exporter\Exporter;

/**
 * Compares scalar or NULL values for equality.
 */
class ScalarComparator extends Comparator {
    public function accepts(mixed $expected, mixed $actual) : bool {
        return (is_scalar($expected) xor null === $expected) && (is_scalar($actual) xor null === $actual) || is_string($expected) && is_object($actual) && method_exists($actual, '__toString') || is_object($expected) && method_exists($expected, '__toString') && is_string($actual);
    }
    
    /**
     * @throws ComparisonFailure
     */
    public function assertEquals(mixed $expected, mixed $actual, float $delta = 0.0, bool $canonicalize = false, bool $ignoreCase = false) : void {
        $expectedToCompare = $expected;
        $actualToCompare = $actual;
        $exporter = new Exporter();
        // always compare as strings to avoid strange behaviour
        // otherwise 0 == 'Foobar'
        if (is_string($expected) && !is_bool($actual) || is_string($actual) && !is_bool($expected)) {
            $expectedToCompare = (string) $expectedToCompare;
            $actualToCompare = (string) $actualToCompare;
            if ($ignoreCase) {
                $expectedToCompare = mb_strtolower($expectedToCompare, 'UTF-8');
                $actualToCompare = mb_strtolower($actualToCompare, 'UTF-8');
            }
        }
        if ($expectedToCompare !== $actualToCompare && is_string($expected) && is_string($actual)) {
            throw new ComparisonFailure($expected, $actual, $exporter->export($expected), $exporter->export($actual), 'Failed asserting that two strings are equal.');
        }
        if ($expectedToCompare != $actualToCompare) {
            throw new ComparisonFailure($expected, $actual, '', '', sprintf('Failed asserting that %s matches expected %s.', $exporter->export($actual), $exporter->export($expected)));
        }
    }

}