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<?php declare(strict_types=1);
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/*
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* This file is part of sebastian/comparator.
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*
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* (c) Sebastian Bergmann <sebastian@phpunit.de>
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*
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* For the full copyright and license information, please view the LICENSE
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* file that was distributed with this source code.
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*/
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namespace SebastianBergmann\Comparator;
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use function is_bool;
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use function is_object;
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use function is_scalar;
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use function is_string;
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use function method_exists;
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use function sprintf;
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use function strtolower;
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/**
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* Compares scalar or NULL values for equality.
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*/
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class ScalarComparator extends Comparator
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{
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/**
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* Returns whether the comparator can compare two values.
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*
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* @param mixed $expected The first value to compare
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* @param mixed $actual The second value to compare
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*
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* @return bool
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*
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* @since Method available since Release 3.6.0
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*/
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public function accepts($expected, $actual)
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{
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return ((is_scalar($expected) xor null === $expected) &&
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(is_scalar($actual) xor null === $actual))
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// allow comparison between strings and objects featuring __toString()
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|| (is_string($expected) && is_object($actual) && method_exists($actual, '__toString'))
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|| (is_object($expected) && method_exists($expected, '__toString') && is_string($actual));
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}
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/**
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* Asserts that two values are equal.
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*
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* @param mixed $expected First value to compare
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* @param mixed $actual Second value to compare
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* @param float $delta Allowed numerical distance between two values to consider them equal
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* @param bool $canonicalize Arrays are sorted before comparison when set to true
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* @param bool $ignoreCase Case is ignored when set to true
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*
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* @throws ComparisonFailure
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*/
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public function assertEquals($expected, $actual, $delta = 0.0, $canonicalize = false, $ignoreCase = false)/*: void*/
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{
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$expectedToCompare = $expected;
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$actualToCompare = $actual;
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// always compare as strings to avoid strange behaviour
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// otherwise 0 == 'Foobar'
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if ((is_string($expected) && !is_bool($actual)) || (is_string($actual) && !is_bool($expected))) {
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$expectedToCompare = (string) $expectedToCompare;
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$actualToCompare = (string) $actualToCompare;
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if ($ignoreCase) {
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$expectedToCompare = strtolower($expectedToCompare);
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$actualToCompare = strtolower($actualToCompare);
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}
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}
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if ($expectedToCompare !== $actualToCompare && is_string($expected) && is_string($actual)) {
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throw new ComparisonFailure(
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$expected,
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$actual,
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$this->exporter->export($expected),
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$this->exporter->export($actual),
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false,
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'Failed asserting that two strings are equal.'
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);
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}
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if ($expectedToCompare != $actualToCompare) {
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throw new ComparisonFailure(
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$expected,
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$actual,
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// no diff is required
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'',
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'',
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false,
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sprintf(
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'Failed asserting that %s matches expected %s.',
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$this->exporter->export($actual),
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$this->exporter->export($expected)
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)
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);
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}
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}
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}
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