CommentUtilsTest.php
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CommentUtilsTest.php
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	<?php

	namespace MediaWiki\Extension\DiscussionTools\Tests\Unit;

	use MediaWiki\Extension\DiscussionTools\CommentUtils;
	use MediaWiki\Extension\DiscussionTools\Tests\TestUtils;
	use MediaWikiUnitTestCase;

	/**
	* @group DiscussionTools
	* @covers \MediaWiki\Extension\DiscussionTools\CommentUtils
	*/
	class CommentUtilsTest extends MediaWikiUnitTestCase {

	use TestUtils;

	/**
	* @dataProvider provideLinearWalk
	*/
	public function testLinearWalk( string $name, string $htmlPath, string $expectedPath ) {
	$html = static::getHtml( $htmlPath );
	$doc = static::createDocument( $html );
	$expected = static::getJson( $expectedPath );

	$actual = [];
	CommentUtils::linearWalk( $doc, static function ( $event, $node ) use ( &$actual ) {
	$actual[] = "$event {$node->nodeName}({$node->nodeType})";
	} );

	$actualBackwards = [];
	CommentUtils::linearWalkBackwards( $doc, static function ( $event, $node ) use ( &$actualBackwards ) {
	$actualBackwards[] = "$event {$node->nodeName}({$node->nodeType})";
	} );

	// Optionally write updated content to the JSON files
	if ( getenv( 'DISCUSSIONTOOLS_OVERWRITE_TESTS' ) ) {
	static::overwriteJsonFile( $expectedPath, $actual );
	}

	static::assertEquals( $expected, $actual, $name );

	$expectedBackwards = array_map(
	static fn ( $a ) => ( $a[0] === 'e' ? 'leave' : 'enter' ) . substr( $a, 5 ),
	array_reverse( $expected )
	);
	static::assertEquals( $expectedBackwards, $actualBackwards, $name . ' (backwards)' );
	}

	public static function provideLinearWalk(): array {
	return static::getJson( '../cases/linearWalk.json' );
	}
	}