86 lines
2.5 KiB
Rust
86 lines
2.5 KiB
Rust
// Copyright (c) 2017 Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
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//
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// This Source Code Form is subject to the terms of the Mozilla Public
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// License, v. 2.0. If a copy of the MPL was not distributed with this
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// file, You can obtain one at http://mozilla.org/MPL/2.0/.
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use std::convert::TryFrom;
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use minidom::Element;
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use error::Error;
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use ns;
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#[derive(Debug, Clone)]
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pub struct Replace {
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pub id: String,
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}
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impl<'a> TryFrom<&'a Element> for Replace {
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type Error = Error;
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fn try_from(elem: &'a Element) -> Result<Replace, Error> {
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if !elem.is("replace", ns::MESSAGE_CORRECT) {
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return Err(Error::ParseError("This is not a replace element."));
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}
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for _ in elem.children() {
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return Err(Error::ParseError("Unknown child in replace element."));
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}
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let id = match elem.attr("id") {
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Some(id) => id.to_owned(),
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None => return Err(Error::ParseError("No 'id' attribute present in replace.")),
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};
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Ok(Replace { id: id })
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}
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}
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impl<'a> Into<Element> for &'a Replace {
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fn into(self) -> Element {
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Element::builder("replace")
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.ns(ns::MESSAGE_CORRECT)
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.attr("id", self.id.clone())
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.build()
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}
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}
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#[cfg(test)]
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mod tests {
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use super::*;
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#[test]
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fn test_simple() {
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let elem: Element = "<replace xmlns='urn:xmpp:message-correct:0' id='coucou'/>".parse().unwrap();
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Replace::try_from(&elem).unwrap();
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}
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#[test]
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fn test_invalid_child() {
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let elem: Element = "<replace xmlns='urn:xmpp:message-correct:0'><coucou/></replace>".parse().unwrap();
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let error = Replace::try_from(&elem).unwrap_err();
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let message = match error {
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Error::ParseError(string) => string,
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_ => panic!(),
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};
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assert_eq!(message, "Unknown child in replace element.");
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}
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#[test]
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fn test_invalid_id() {
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let elem: Element = "<replace xmlns='urn:xmpp:message-correct:0'/>".parse().unwrap();
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let error = Replace::try_from(&elem).unwrap_err();
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let message = match error {
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Error::ParseError(string) => string,
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_ => panic!(),
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};
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assert_eq!(message, "No 'id' attribute present in replace.");
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}
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#[test]
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fn test_serialise() {
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let elem: Element = "<replace xmlns='urn:xmpp:message-correct:0' id='coucou'/>".parse().unwrap();
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let replace = Replace { id: String::from("coucou") };
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let elem2 = (&replace).into();
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assert_eq!(elem, elem2);
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}
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}
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