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<?php
/*
* This file is part of the Comparator package.
*
* (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;
/**
* Compares numerical values for equality.
*/
class NumericComparator extends ScalarComparator
{
/**
* Returns whether the comparator can compare two values.
*
* @param mixed $expected The first value to compare
* @param mixed $actual The second value to compare
* @return bool
*/
public function accepts($expected, $actual)
{
// all numerical values, but not if one of them is a double
// or both of them are strings
return is_numeric($expected) && is_numeric($actual) &&
!(is_double($expected) || is_double($actual)) &&
!(is_string($expected) && is_string($actual));
}
/**
* Asserts that two values are equal.
*
* @param mixed $expected First value to compare
* @param mixed $actual Second value to compare
* @param float $delta Allowed numerical distance between two values to consider them equal
* @param bool $canonicalize Arrays are sorted before comparison when set to true
* @param bool $ignoreCase Case is ignored when set to true
*
* @throws ComparisonFailure
*/
public function assertEquals($expected, $actual, $delta = 0.0, $canonicalize = false, $ignoreCase = false)
{
if (is_infinite($actual) && is_infinite($expected)) {
return;
}
if ((is_infinite($actual) xor is_infinite($expected)) ||
(is_nan($actual) or is_nan($expected)) ||
abs($actual - $expected) > $delta) {
throw new ComparisonFailure(
$expected,
$actual,
'',
'',
false,
sprintf(
'Failed asserting that %s matches expected %s.',
$this->exporter->export($actual),
$this->exporter->export($expected)
)
);
}
}
}
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