1use minidom::Element;
 2
 3use error::Error;
 4
 5use ns;
 6
 7#[derive(Debug, Clone)]
 8pub enum ChatState {
 9    Active,
10    Composing,
11    Gone,
12    Inactive,
13    Paused,
14}
15
16pub fn parse_chatstate(root: &Element) -> Result<ChatState, Error> {
17    for _ in root.children() {
18        return Err(Error::ParseError("Unknown child in chatstate element."));
19    }
20    if root.is("active", ns::CHATSTATES) {
21        Ok(ChatState::Active)
22    } else if root.is("composing", ns::CHATSTATES) {
23        Ok(ChatState::Composing)
24    } else if root.is("gone", ns::CHATSTATES) {
25        Ok(ChatState::Gone)
26    } else if root.is("inactive", ns::CHATSTATES) {
27        Ok(ChatState::Inactive)
28    } else if root.is("paused", ns::CHATSTATES) {
29        Ok(ChatState::Paused)
30    } else {
31        Err(Error::ParseError("This is not a chatstate element."))
32    }
33}
34
35#[cfg(test)]
36mod tests {
37    use minidom::Element;
38    use error::Error;
39    use chatstates;
40
41    #[test]
42    fn test_simple() {
43        let elem: Element = "<active xmlns='http://jabber.org/protocol/chatstates'/>".parse().unwrap();
44        chatstates::parse_chatstate(&elem).unwrap();
45    }
46
47    #[test]
48    fn test_invalid() {
49        let elem: Element = "<coucou xmlns='http://jabber.org/protocol/chatstates'/>".parse().unwrap();
50        let error = chatstates::parse_chatstate(&elem).unwrap_err();
51        let message = match error {
52            Error::ParseError(string) => string,
53            _ => panic!(),
54        };
55        assert_eq!(message, "This is not a chatstate element.");
56    }
57
58    #[test]
59    fn test_invalid_child() {
60        let elem: Element = "<gone xmlns='http://jabber.org/protocol/chatstates'><coucou/></gone>".parse().unwrap();
61        let error = chatstates::parse_chatstate(&elem).unwrap_err();
62        let message = match error {
63            Error::ParseError(string) => string,
64            _ => panic!(),
65        };
66        assert_eq!(message, "Unknown child in chatstate element.");
67    }
68
69    #[test]
70    #[ignore]
71    fn test_invalid_attribute() {
72        let elem: Element = "<inactive xmlns='http://jabber.org/protocol/chatstates' coucou=''/>".parse().unwrap();
73        let error = chatstates::parse_chatstate(&elem).unwrap_err();
74        let message = match error {
75            Error::ParseError(string) => string,
76            _ => panic!(),
77        };
78        assert_eq!(message, "Unknown attribute in chatstate element.");
79    }
80}