getTest example

$nodes = ['node' => $node];
        if (null !== $arguments) {
            $nodes['arguments'] = $arguments;
        }

        parent::__construct($nodes, ['name' => $name], $lineno);
    }

    public function compile(Compiler $compiler): void
    {
        $name = $this->getAttribute('name');
        $test = $compiler->getEnvironment()->getTest($name);

        $this->setAttribute('name', $name);
        $this->setAttribute('type', 'test');
        $this->setAttribute('arguments', $test->getArguments());
        $this->setAttribute('callable', $test->getCallable());
        $this->setAttribute('is_variadic', $test->isVariadic());

        $this->compileCallable($compiler);
    }
}

return new Node($targets);
    }

    private function parseNotTestExpression(Node $node): NotUnary
    {
        return new NotUnary($this->parseTestExpression($node), $this->parser->getCurrentToken()->getLine());
    }

    private function parseTestExpression(Node $node): TestExpression
    {
        $stream = $this->parser->getStream();
        list($name, $test) = $this->getTest($node->getTemplateLine());

        $class = $this->getTestNodeClass($test);
        $arguments = null;
        if ($stream->test(/* Token::PUNCTUATION_TYPE */ 9, '(')) {
            $arguments = $this->parseArguments(true);
        } elseif ($test->hasOneMandatoryArgument()) {
            $arguments = new Node([0 => $this->parsePrimaryExpression()]);
        }

        if ('defined' === $name && $node instanceof NameExpression && null !== $alias = $this->parser->getImportedSymbol('function', $node->getAttribute('name'))) {
            $node = new MethodCallExpression($alias['node'], $alias['name'], new ArrayExpression([], $node->getTemplateLine()), $node->getTemplateLine());
            

if ($id = $node->getId()) {
                    $code .= " " . $this->renderNode($id);
                }
                if ($superClass = $node->getSuperClass()) {
                    $code .= " extends " . $this->renderNode($superClass);
                }
                $code .= $this->renderStatementBlock(
                    $node, $node->getBody(), true
                );
            break;
            case "ConditionalExpression":
                $code .= $this->renderNode($node->getTest()) .
                         $this->renderOpts->sao .
                         "?" .
                         $this->renderOpts->sao .
                         $this->renderNode($node->getConsequent()) .
                         $this->renderOpts->sao .
                         ":" .
                         $this->renderOpts->sao .
                         $this->renderNode($node->getAlternate());
            break;
            case "DebuggerStatement":
                $code .= "debugger";
            

    public function getTests(): array
    {
        return $this->extensionSet->getTests();
    }

    /** * @internal */
    public function getTest(string $name): ?TwigTest
    {
        return $this->extensionSet->getTest($name);
    }

    public function addFunction(TwigFunction $function)
    {
        $this->extensionSet->addFunction($function);
    }

    /** * @internal */
    public function getFunction(string $name): ?TwigFunction
    {