Comparator.php

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<?php
 
namespace MyCLabs\Enum\PHPUnit;
 
use MyCLabs\Enum\Enum;
use SebastianBergmann\Comparator\ComparisonFailure;
 
final class Comparator extends \SebastianBergmann\Comparator\Comparator
{
    public function accepts($expected, $actual)
    {
        return $expected instanceof Enum && (
                $actual instanceof Enum || $actual === null
            );
    }
 
    public function assertEquals($expected, $actual, $delta = 0.0, $canonicalize = false, $ignoreCase = false)
    {
        if ($expected->equals($actual)) {
            return;
        }
 
        throw new ComparisonFailure(
            $expected,
            $actual,
            $this->formatEnum($expected),
            $this->formatEnum($actual),
            false,
            'Failed asserting that two Enums are equal.'
        );
    }
 
    private function formatEnum(Enum $enum = null)
    {
        if ($enum === null) {
            return "null";
        }
 
        return get_class($enum)."::{$enum->getKey()}()";
    }
}