Chris@0: <?php
Chris@0: /*
Chris@0:  * This file is part of the Comparator package.
Chris@0:  *
Chris@0:  * (c) Sebastian Bergmann <sebastian@phpunit.de>
Chris@0:  *
Chris@0:  * For the full copyright and license information, please view the LICENSE
Chris@0:  * file that was distributed with this source code.
Chris@0:  */
Chris@0: 
Chris@0: namespace SebastianBergmann\Comparator;
Chris@0: 
Chris@0: /**
Chris@0:  * Compares numerical values for equality.
Chris@0:  */
Chris@0: class NumericComparator extends ScalarComparator
Chris@0: {
Chris@0:     /**
Chris@0:      * Returns whether the comparator can compare two values.
Chris@0:      *
Chris@0:      * @param  mixed $expected The first value to compare
Chris@0:      * @param  mixed $actual   The second value to compare
Chris@0:      * @return bool
Chris@0:      */
Chris@0:     public function accepts($expected, $actual)
Chris@0:     {
Chris@0:         // all numerical values, but not if one of them is a double
Chris@0:         // or both of them are strings
Chris@0:         return is_numeric($expected) && is_numeric($actual) &&
Chris@0:                !(is_double($expected) || is_double($actual)) &&
Chris@0:                !(is_string($expected) && is_string($actual));
Chris@0:     }
Chris@0: 
Chris@0:     /**
Chris@0:      * Asserts that two values are equal.
Chris@0:      *
Chris@0:      * @param mixed $expected     First value to compare
Chris@0:      * @param mixed $actual       Second value to compare
Chris@0:      * @param float $delta        Allowed numerical distance between two values to consider them equal
Chris@0:      * @param bool  $canonicalize Arrays are sorted before comparison when set to true
Chris@0:      * @param bool  $ignoreCase   Case is ignored when set to true
Chris@0:      *
Chris@0:      * @throws ComparisonFailure
Chris@0:      */
Chris@0:     public function assertEquals($expected, $actual, $delta = 0.0, $canonicalize = false, $ignoreCase = false)
Chris@0:     {
Chris@0:         if (is_infinite($actual) && is_infinite($expected)) {
Chris@0:             return;
Chris@0:         }
Chris@0: 
Chris@0:         if ((is_infinite($actual) xor is_infinite($expected)) ||
Chris@0:             (is_nan($actual) or is_nan($expected)) ||
Chris@0:             abs($actual - $expected) > $delta) {
Chris@0:             throw new ComparisonFailure(
Chris@0:                 $expected,
Chris@0:                 $actual,
Chris@0:                 '',
Chris@0:                 '',
Chris@0:                 false,
Chris@0:                 sprintf(
Chris@0:                     'Failed asserting that %s matches expected %s.',
Chris@0:                     $this->exporter->export($actual),
Chris@0:                     $this->exporter->export($expected)
Chris@0:                 )
Chris@0:             );
Chris@0:         }
Chris@0:     }
Chris@0: }