1use minidom::Element;
 2
 3use error::Error;
 4
 5use ns;
 6
 7#[derive(Debug, Clone)]
 8pub struct Attention;
 9
10pub fn parse_attention(root: &Element) -> Result<Attention, Error> {
11    if !root.is("attention", ns::ATTENTION) {
12        return Err(Error::ParseError("This is not an attention element."));
13    }
14    for _ in root.children() {
15        return Err(Error::ParseError("Unknown child in attention element."));
16    }
17    Ok(Attention)
18}
19
20pub fn serialise(_: &Attention) -> Element {
21    Element::builder("attention")
22            .ns(ns::ATTENTION)
23            .build()
24}
25
26#[cfg(test)]
27mod tests {
28    use minidom::Element;
29    use error::Error;
30    use attention;
31
32    #[test]
33    fn test_simple() {
34        let elem: Element = "<attention xmlns='urn:xmpp:attention:0'/>".parse().unwrap();
35        attention::parse_attention(&elem).unwrap();
36    }
37
38    #[test]
39    fn test_invalid_child() {
40        let elem: Element = "<attention xmlns='urn:xmpp:attention:0'><coucou/></attention>".parse().unwrap();
41        let error = attention::parse_attention(&elem).unwrap_err();
42        let message = match error {
43            Error::ParseError(string) => string,
44            _ => panic!(),
45        };
46        assert_eq!(message, "Unknown child in attention element.");
47    }
48
49    #[test]
50    fn test_serialise() {
51        let elem: Element = "<attention xmlns='urn:xmpp:attention:0'/>".parse().unwrap();
52        let attention = attention::Attention;
53        let elem2 = attention::serialise(&attention);
54        assert_eq!(elem, elem2);
55    }
56}