Viewing file:  NumericComparator.php (2.18 KB) -rw-r--r--
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<?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 abs;
use function assert;
use function is_float;
use function is_infinite;
use function is_nan;
use function is_numeric;
use function is_string;
use function sprintf;
use SebastianBergmann\Exporter\Exporter;
final class NumericComparator extends ScalarComparator
{
public function accepts(mixed $expected, mixed $actual): bool
{
// all numerical values, but not if both of them are strings
return is_numeric($expected) && is_numeric($actual) &&
!(is_string($expected) && is_string($actual));
}
/**
* @throws ComparisonFailure
*/
public function assertEquals(mixed $expected, mixed $actual, float $delta = 0.0, bool $canonicalize = false, bool $ignoreCase = false): void
{
assert(is_numeric($expected));
assert(is_numeric($actual));
if ($this->isInfinite($expected) && $this->isInfinite($actual)) {
if ($expected < 0 && $actual < 0) {
return;
}
if ($expected > 0 && $actual > 0) {
return;
}
}
if (($this->isInfinite($actual) xor $this->isInfinite($expected)) ||
($this->isNan($actual) || $this->isNan($expected)) ||
abs($actual - $expected) > $delta) {
$exporter = new Exporter;
throw new ComparisonFailure(
$expected,
$actual,
'',
'',
sprintf(
'Failed asserting that %s matches expected %s.',
$exporter->export($actual),
$exporter->export($expected),
),
);
}
}
private function isInfinite(mixed $value): bool
{
return is_float($value) && is_infinite($value);
}
private function isNan(mixed $value): bool
{
return is_float($value) && is_nan($value);
}
}
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