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<?php declare(strict_types=1);
namespace PhpParser\NodeVisitor;
use PhpParser\Node\Expr\ConstFetch;
use PhpParser\Node\Stmt\Else_;
use PhpParser\Node\Stmt\If_;
use PhpParser\NodeFinder;
use PhpParser\NodeTraverser;
use PhpParser\ParserFactory;
final class NodeConnectingVisitorTest extends \PHPUnit\Framework\TestCase {
public function testConnectsNodeToItsParentNodeAndItsSiblingNodes(): void {
$ast = (new ParserFactory())->createForNewestSupportedVersion()->parse(
'<?php if (true) {} else {}'
);
$traverser = new NodeTraverser();
$traverser->addVisitor(new NodeConnectingVisitor());
$ast = $traverser->traverse($ast);
$node = (new NodeFinder())->findFirstInstanceof($ast, Else_::class);
$this->assertSame(If_::class, get_class($node->getAttribute('parent')));
$this->assertSame(ConstFetch::class, get_class($node->getAttribute('previous')));
$node = (new NodeFinder())->findFirstInstanceof($ast, ConstFetch::class);
$this->assertSame(Else_::class, get_class($node->getAttribute('next')));
}
public function testWeakReferences(): void {
$ast = (new ParserFactory())->createForNewestSupportedVersion()->parse(
'<?php if (true) {} else {}'
);
$traverser = new NodeTraverser();
$traverser->addVisitor(new NodeConnectingVisitor(true));
$ast = $traverser->traverse($ast);
$node = (new NodeFinder())->findFirstInstanceof($ast, Else_::class);
$this->assertInstanceOf(\WeakReference::class, $node->getAttribute('weak_parent'));
$this->assertSame(If_::class, get_class($node->getAttribute('weak_parent')->get()));
$this->assertInstanceOf(\WeakReference::class, $node->getAttribute('weak_previous'));
$this->assertSame(ConstFetch::class, get_class($node->getAttribute('weak_previous')->get()));
$node = (new NodeFinder())->findFirstInstanceof($ast, ConstFetch::class);
$this->assertInstanceOf(\WeakReference::class, $node->getAttribute('weak_next'));
$this->assertSame(Else_::class, get_class($node->getAttribute('weak_next')->get()));
}
}
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