text: from lxml import etree
  
  from zibalzeep.wsse import utils
  
  
  def test_get_security_header():
      doc = etree.fromstring(
          """
          <soap-env:Envelope
              xmlns:ns0="http://example.com/stockquote.xsd"
              xmlns:soap="http://schemas.xmlsoap.org/wsdl/soap/"
              xmlns:soap-env="http://schemas.xmlsoap.org/soap/envelope/"
              xmlns:wsdl="http://schemas.xmlsoap.org/wsdl/"
              xmlns:xsd="http://www.w3.org/2001/XMLSchema"
          >
            <soap-env:Body>
              <ns0:TradePriceRequest>
                <tickerSymbol>foobar</tickerSymbol>
                <ns0:country/>
              </ns0:TradePriceRequest>
            </soap-env:Body>
          </soap-env:Envelope>
      """.strip()
      )
  
      element = utils.get_security_header(doc)
      assert (
          element.tag
          == "{http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-wssecurity-secext-1.0.xsd}Security"
      )  # noqa
  