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<?php
declare(strict_types=1);
/*
* This file is part of the league/commonmark package.
*
* (c) Colin O'Dell <colinodell@gmail.com>
*
* Original code based on the CommonMark JS reference parser (https://bitly.com/commonmark-js)
* - (c) John MacFarlane
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace League\CommonMark\Tests\Unit\Node;
use League\CommonMark\Extension\CommonMark\Node\Inline\Emphasis;
use League\CommonMark\Node\Block\Document;
use League\CommonMark\Node\Block\Paragraph;
use League\CommonMark\Node\Inline\Text;
use PHPUnit\Framework\TestCase;
final class NodeWalkerTest extends TestCase
{
public function testWalkEmptyBlockNode(): void
{
$node = new Document();
$walker = $node->walker();
$event = $walker->next();
$this->assertSame($node, $event->getNode());
$this->assertTrue($event->isEntering());
$event = $walker->next();
$this->assertSame($node, $event->getNode());
$this->assertFalse($event->isEntering());
$event = $walker->next();
$this->assertNull($event);
$event = $walker->next();
$this->assertNull($event);
}
public function testWalkEmptyInlineNode(): void
{
$node = new Text();
$walker = $node->walker();
$event = $walker->next();
$this->assertSame($node, $event->getNode());
$this->assertTrue($event->isEntering());
$event = $walker->next();
$this->assertNull($event);
$event = $walker->next();
$this->assertNull($event);
}
public function testWalkNestedNodes(): void
{
$document = new Document();
$document->appendChild($paragraph = new Paragraph());
$paragraph->appendChild($text1 = new Text());
$paragraph->appendChild($emphasis = new Emphasis('*'));
$emphasis->appendChild($text2 = new Text());
$walker = $document->walker();
$event = $walker->next();
$this->assertSame($document, $event->getNode());
$this->assertTrue($event->isEntering());
$event = $walker->next();
$this->assertSame($paragraph, $event->getNode());
$this->assertTrue($event->isEntering());
$event = $walker->next();
$this->assertSame($text1, $event->getNode());
$this->assertTrue($event->isEntering());
$event = $walker->next();
$this->assertSame($emphasis, $event->getNode());
$this->assertTrue($event->isEntering());
$event = $walker->next();
$this->assertSame($text2, $event->getNode());
$this->assertTrue($event->isEntering());
$event = $walker->next();
$this->assertSame($emphasis, $event->getNode());
$this->assertFalse($event->isEntering());
$event = $walker->next();
$this->assertSame($paragraph, $event->getNode());
$this->assertFalse($event->isEntering());
$event = $walker->next();
$this->assertSame($document, $event->getNode());
$this->assertFalse($event->isEntering());
$event = $walker->next();
$this->assertNull($event);
$event = $walker->next();
$this->assertNull($event);
}
public function testResumeAt(): void
{
$document = new Document();
$document->appendChild($paragraph = new Paragraph());
$paragraph->appendChild($text = new Text());
$walker = $document->walker();
$walker->next();
$walker->next();
$event = $walker->next();
$this->assertSame($text, $event->getNode());
$this->assertTrue($event->isEntering());
$walker->resumeAt($text);
$event = $walker->next();
$this->assertSame($text, $event->getNode());
$this->assertTrue($event->isEntering());
$walker->resumeAt($paragraph, true);
$event = $walker->next();
$this->assertSame($paragraph, $event->getNode());
$this->assertTrue($event->isEntering());
$event = $walker->next();
$this->assertSame($text, $event->getNode());
$this->assertTrue($event->isEntering());
}
}
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