'iframe in textarea should not be filtered since it\'s not parsed as tag'

def test_iframe_in_textarea(self):

    content = '\n                                                <textarea><iframe    src="data:text/plain,foo"></iframe></textarea>\n                                '
    expected = '\n                                                <textarea><iframe    src="data:text/plain,foo"></iframe></textarea>\n                                '
    result = Document.objects.clean_content(content)
    eq_(normalize_html(expected), normalize_html(result))
