1// Copyright (c) 2017 Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
 2//
 3// This Source Code Form is subject to the terms of the Mozilla Public
 4// License, v. 2.0. If a copy of the MPL was not distributed with this
 5// file, You can obtain one at http://mozilla.org/MPL/2.0/.
 6
 7use minidom::Element;
 8
 9use error::Error;
10
11use ns;
12
13#[derive(Debug, Clone)]
14pub struct Replace {
15    pub id: String,
16}
17
18pub fn parse_replace(root: &Element) -> Result<Replace, Error> {
19    if !root.is("replace", ns::MESSAGE_CORRECT) {
20        return Err(Error::ParseError("This is not a replace element."));
21    }
22    for _ in root.children() {
23        return Err(Error::ParseError("Unknown child in replace element."));
24    }
25    let id = match root.attr("id") {
26        Some(id) => id.to_owned(),
27        None => return Err(Error::ParseError("No 'id' attribute present in replace.")),
28    };
29    Ok(Replace { id: id })
30}
31
32pub fn serialise(replace: &Replace) -> Element {
33    Element::builder("replace")
34            .ns(ns::MESSAGE_CORRECT)
35            .attr("id", replace.id.clone())
36            .build()
37}
38
39#[cfg(test)]
40mod tests {
41    use minidom::Element;
42    use error::Error;
43    use message_correct;
44
45    #[test]
46    fn test_simple() {
47        let elem: Element = "<replace xmlns='urn:xmpp:message-correct:0' id='coucou'/>".parse().unwrap();
48        message_correct::parse_replace(&elem).unwrap();
49    }
50
51    #[test]
52    fn test_invalid_child() {
53        let elem: Element = "<replace xmlns='urn:xmpp:message-correct:0'><coucou/></replace>".parse().unwrap();
54        let error = message_correct::parse_replace(&elem).unwrap_err();
55        let message = match error {
56            Error::ParseError(string) => string,
57            _ => panic!(),
58        };
59        assert_eq!(message, "Unknown child in replace element.");
60    }
61
62    #[test]
63    fn test_invalid_id() {
64        let elem: Element = "<replace xmlns='urn:xmpp:message-correct:0'/>".parse().unwrap();
65        let error = message_correct::parse_replace(&elem).unwrap_err();
66        let message = match error {
67            Error::ParseError(string) => string,
68            _ => panic!(),
69        };
70        assert_eq!(message, "No 'id' attribute present in replace.");
71    }
72
73    #[test]
74    fn test_serialise() {
75        let elem: Element = "<replace xmlns='urn:xmpp:message-correct:0' id='coucou'/>".parse().unwrap();
76        let replace = message_correct::Replace { id: String::from("coucou") };
77        let elem2 = message_correct::serialise(&replace);
78        assert_eq!(elem, elem2);
79    }
80}