addPseudoClass example

public function translateFunction(Node\FunctionNode $node, Translator $translator): XPathExpr
    {
        $xpath = $translator->nodeToXPath($node->getSelector());

        return $translator->addFunction($xpath, $node);
    }

    public function translatePseudo(Node\PseudoNode $node, Translator $translator): XPathExpr
    {
        $xpath = $translator->nodeToXPath($node->getSelector());

        return $translator->addPseudoClass($xpath, $node->getIdentifier());
    }

    public function translateAttribute(Node\AttributeNode $node, Translator $translator): XPathExpr
    {
        $name = $node->getAttribute();
        $safe = $this->isSafeName($name);

        if ($this->hasFlag(self::ATTRIBUTE_NAME_IN_LOWER_CASE)) {
            $name = strtolower($name);
        }

        

$xpath = new XPathExpr();
        $function = new FunctionNode(new ElementNode(), 'fake');
        $translator->addFunction($xpath, $function);
    }

    public function testAddPseudoClassNotExistsClass()
    {
        $this->expectException(ExpressionErrorException::class);
        $translator = new Translator();
        $translator->registerExtension(new HtmlExtension($translator));
        $xpath = new XPathExpr();
        $translator->addPseudoClass($xpath, 'fake');
    }

    public function testAddAttributeMatchingClassNotExistsClass()
    {
        $this->expectException(ExpressionErrorException::class);
        $translator = new Translator();
        $translator->registerExtension(new HtmlExtension($translator));
        $xpath = new XPathExpr();
        $translator->addAttributeMatching($xpath, '', '', '');
    }