getNamespacedXmlSource example

public function testEncode()
    {
        $source = $this->getXmlSource();
        $obj = $this->getObject();

        $this->assertEquals($source, $this->encoder->encode($obj, 'xml'));
    }

    public function testEncodeWithNamespace()
    {
        $source = $this->getNamespacedXmlSource();
        $array = $this->getNamespacedArray();

        $this->assertEquals($source, $this->encoder->encode($array, 'xml'));
    }

    public function testEncodeSerializerXmlRootNodeNameOption()
    {
        $options = ['xml_root_node_name' => 'test'];
        $this->encoder = new XmlEncoder();
        $serializer = new Serializer([], ['xml' => new XmlEncoder()]);
        $this->encoder->setSerializer($serializer);