117 lines
3.5 KiB
Rust
117 lines
3.5 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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#![deny(missing_docs)]
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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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/// Enum representing chatstate elements part of the
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/// `http://jabber.org/protocol/chatstates` namespace.
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#[derive(Debug, Clone)]
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pub enum ChatState {
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/// `<active xmlns='http://jabber.org/protocol/chatstates'/>`
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Active,
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/// `<composing xmlns='http://jabber.org/protocol/chatstates'/>`
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Composing,
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/// `<gone xmlns='http://jabber.org/protocol/chatstates'/>`
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Gone,
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/// `<inactive xmlns='http://jabber.org/protocol/chatstates'/>`
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Inactive,
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/// `<paused xmlns='http://jabber.org/protocol/chatstates'/>`
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Paused,
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}
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impl TryFrom<Element> for ChatState {
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type Err = Error;
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fn try_from(elem: Element) -> Result<ChatState, Error> {
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check_ns_only!(elem, "chatstate", ns::CHATSTATES);
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check_no_children!(elem, "chatstate");
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check_no_attributes!(elem, "chatstate");
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Ok(match elem.name() {
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"active" => ChatState::Active,
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"composing" => ChatState::Composing,
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"gone" => ChatState::Gone,
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"inactive" => ChatState::Inactive,
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"paused" => ChatState::Paused,
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_ => return Err(Error::ParseError("This is not a chatstate element.")),
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})
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}
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}
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impl From<ChatState> for Element {
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fn from(chatstate: ChatState) -> Element {
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Element::builder(match chatstate {
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ChatState::Active => "active",
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ChatState::Composing => "composing",
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ChatState::Gone => "gone",
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ChatState::Inactive => "inactive",
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ChatState::Paused => "paused",
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}).ns(ns::CHATSTATES)
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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 = "<active xmlns='http://jabber.org/protocol/chatstates'/>".parse().unwrap();
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ChatState::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 = "<coucou xmlns='http://jabber.org/protocol/chatstates'/>".parse().unwrap();
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let error = ChatState::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, "This is not a chatstate element.");
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}
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#[test]
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fn test_invalid_child() {
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let elem: Element = "<gone xmlns='http://jabber.org/protocol/chatstates'><coucou/></gone>".parse().unwrap();
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let error = ChatState::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 chatstate 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 = "<inactive xmlns='http://jabber.org/protocol/chatstates' coucou=''/>".parse().unwrap();
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let error = ChatState::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 chatstate element.");
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}
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#[test]
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fn test_serialise() {
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let chatstate = ChatState::Active;
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let elem: Element = chatstate.into();
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assert!(elem.is("active", ns::CHATSTATES));
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}
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}
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