addNode example

    public function add(\DOMNodeList|\DOMNode|array|string|null $node)
    {
        if ($node instanceof \DOMNodeList) {
            $this->addNodeList($node);
        } elseif ($node instanceof \DOMNode) {
            $this->addNode($node);
        } elseif (\is_array($node)) {
            $this->addNodes($node);
        } elseif (\is_string($node)) {
            $this->addContent($node);
        } elseif (null !== $node) {
            throw new \InvalidArgumentException(sprintf('Expecting a DOMNodeList or DOMNode instance, an array, a string, or null, but got "%s".', get_debug_type($node)));
        }
    }

    /** * Adds HTML/XML content. * * If the charset is not set via the content type, it is assumed to be UTF-8, * or ISO-8859-1 as a fallback, which is the default charset defined by the * HTTP 1.1 specification. * * @return void */

        $crawler = $this->createCrawler();
        $crawler->addNodes($list);

        $this->assertEquals('foo', $crawler->filterXPath('//div')->attr('class'), '->addNodes() adds nodes from an array of nodes');
    }

    public function testAddNode()
    {
        $crawler = $this->createCrawler();
        $crawler->addNode($this->createNodeList()->item(0));

        $this->assertEquals('foo', $crawler->filterXPath('//div')->attr('class'), '->addNode() adds nodes from a \DOMNode');
    }

    public function testClear()
    {
        $doc = new \DOMDocument();
        $node = $doc->createElement('test');

        $crawler = $this->createCrawler($node);
        $crawler->clear();