Python xml.dom.minidom.Node.COMMENT_NODE Examples

The following are 1 code examples of xml.dom.minidom.Node.COMMENT_NODE(). You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may also want to check out all available functions/classes of the module xml.dom.minidom.Node , or try the search function .
Example #1
Source File: utils.py    From Hands-On-Application-Development-with-PyCharm with MIT License 4 votes vote down vote up 
def compare_xml(want, got):
    """
    Try to do a 'xml-comparison' of want and got. Plain string comparison
    doesn't always work because, for example, attribute ordering should not be
    important. Ignore comment nodes and leading and trailing whitespace.

    Based on https://github.com/lxml/lxml/blob/master/src/lxml/doctestcompare.py
    """
    _norm_whitespace_re = re.compile(r'[ \t\n][ \t\n]+')

    def norm_whitespace(v):
        return _norm_whitespace_re.sub(' ', v)

    def child_text(element):
        return ''.join(c.data for c in element.childNodes
                       if c.nodeType == Node.TEXT_NODE)

    def children(element):
        return [c for c in element.childNodes
                if c.nodeType == Node.ELEMENT_NODE]

    def norm_child_text(element):
        return norm_whitespace(child_text(element))

    def attrs_dict(element):
        return dict(element.attributes.items())

    def check_element(want_element, got_element):
        if want_element.tagName != got_element.tagName:
            return False
        if norm_child_text(want_element) != norm_child_text(got_element):
            return False
        if attrs_dict(want_element) != attrs_dict(got_element):
            return False
        want_children = children(want_element)
        got_children = children(got_element)
        if len(want_children) != len(got_children):
            return False
        return all(check_element(want, got) for want, got in zip(want_children, got_children))

    def first_node(document):
        for node in document.childNodes:
            if node.nodeType != Node.COMMENT_NODE:
                return node

    want = want.strip().replace('\\n', '\n')
    got = got.strip().replace('\\n', '\n')

    # If the string is not a complete xml document, we may need to add a
    # root element. This allow us to compare fragments, like "<foo/><bar/>"
    if not want.startswith('<?xml'):
        wrapper = '<root>%s</root>'
        want = wrapper % want
        got = wrapper % got

    # Parse the want and got strings, and compare the parsings.
    want_root = first_node(parseString(want))
    got_root = first_node(parseString(got))

    return check_element(want_root, got_root)