94 lines
2.9 KiB
PHP
94 lines
2.9 KiB
PHP
<?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 sprintf;
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use function strtolower;
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use DOMDocument;
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use DOMNode;
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use ValueError;
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/**
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* Compares DOMNode instances for equality.
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*/
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class DOMNodeComparator extends ObjectComparator
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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 $actual The second value to compare
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*
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* @return bool
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*/
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public function accepts($expected, $actual)
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{
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return $expected instanceof DOMNode && $actual instanceof DOMNode;
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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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* @param array $processed List of already processed elements (used to prevent infinite recursion)
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*
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* @throws ComparisonFailure
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*/
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public function assertEquals($expected, $actual, $delta = 0.0, $canonicalize = false, $ignoreCase = false, array &$processed = [])/*: void*/
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{
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$expectedAsString = $this->nodeToText($expected, true, $ignoreCase);
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$actualAsString = $this->nodeToText($actual, true, $ignoreCase);
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if ($expectedAsString !== $actualAsString) {
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$type = $expected instanceof DOMDocument ? 'documents' : 'nodes';
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throw new ComparisonFailure(
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$expected,
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$actual,
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$expectedAsString,
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$actualAsString,
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false,
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sprintf("Failed asserting that two DOM %s are equal.\n", $type)
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);
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}
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}
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/**
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* Returns the normalized, whitespace-cleaned, and indented textual
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* representation of a DOMNode.
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*/
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private function nodeToText(DOMNode $node, bool $canonicalize, bool $ignoreCase): string
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{
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if ($canonicalize) {
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$document = new DOMDocument;
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try {
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@$document->loadXML($node->C14N());
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} catch (ValueError $e) {
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}
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$node = $document;
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}
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$document = $node instanceof DOMDocument ? $node : $node->ownerDocument;
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$document->formatOutput = true;
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$document->normalizeDocument();
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$text = $node instanceof DOMDocument ? $node->saveXML() : $document->saveXML($node);
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return $ignoreCase ? strtolower($text) : $text;
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}
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}
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