487dbdc6de
This allows Element::from() to work, and since Into<Element> is automatically implemented for any type implementing From there is no change to existing code.
75 lines
2 KiB
Rust
75 lines
2 KiB
Rust
// Copyright (c) 2017 Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
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// Copyright (c) 2017 Maxime “pep” Buquet <pep+code@bouah.net>
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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 try_from::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 Ping;
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impl TryFrom<Element> for Ping {
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type Err = Error;
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fn try_from(elem: Element) -> Result<Ping, Error> {
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if !elem.is("ping", ns::PING) {
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return Err(Error::ParseError("This is not a ping element."));
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}
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for _ in elem.children() {
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return Err(Error::ParseError("Unknown child in ping element."));
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}
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for _ in elem.attrs() {
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return Err(Error::ParseError("Unknown attribute in ping element."));
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}
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Ok(Ping)
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}
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}
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impl From<Ping> for Element {
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fn from(_: Ping) -> Element {
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Element::builder("ping")
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.ns(ns::PING)
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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 = "<ping xmlns='urn:xmpp:ping'/>".parse().unwrap();
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Ping::try_from(elem).unwrap();
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}
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#[test]
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fn test_invalid() {
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let elem: Element = "<ping xmlns='urn:xmpp:ping'><coucou/></ping>".parse().unwrap();
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let error = Ping::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 ping element.");
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}
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#[test]
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fn test_invalid_attribute() {
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let elem: Element = "<ping xmlns='urn:xmpp:ping' coucou=''/>".parse().unwrap();
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let error = Ping::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 attribute in ping element.");
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}
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}
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