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https://gitlab.com/xmpp-rs/xmpp-rs.git
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6ef8dbefa3
This is a large change and as such, it needs good motivation. Let me remind you of the ultimate goal: we want a derive macro which allows us to FromXml/IntoXml, and that derive macro should be usable from `xmpp_parsers` and other crates. For that, any code generated by the derive macro mustn't depend on any code in the `xmpp_parsers` crate, because you cannot name the crate you are in portably (`xmpp_parsers::..` wouldn't resolve within `xmpp_parsers`, and `crate::..` would point at other crates if the macro was used in other crates). We also want to interoperate with code already implementing `TryFrom<Element>` and `Into<Element>` on structs. This ultimately requires that we have an error type which is shared by the two implementations and that error type must be declared in the `xso` crate to be usable by the macros. Thus, we port the error type over to use the type declared in `xso`. This changes the structure of the error type greatly; I do not think that `xso` should have to know about all the different types we are parsing there and they don't deserve special treatment. Wrapping them in a `Box<dyn ..>` seems more appropriate.
99 lines
3.1 KiB
Rust
99 lines
3.1 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 crate::message::MessagePayload;
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generate_element_enum!(
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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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ChatState, "chatstate", CHATSTATES, {
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/// `<active xmlns='http://jabber.org/protocol/chatstates'/>`
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Active => "active",
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/// `<composing xmlns='http://jabber.org/protocol/chatstates'/>`
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Composing => "composing",
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/// `<gone xmlns='http://jabber.org/protocol/chatstates'/>`
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Gone => "gone",
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/// `<inactive xmlns='http://jabber.org/protocol/chatstates'/>`
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Inactive => "inactive",
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/// `<paused xmlns='http://jabber.org/protocol/chatstates'/>`
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Paused => "paused",
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}
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);
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impl MessagePayload for ChatState {}
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#[cfg(test)]
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mod tests {
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use super::*;
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use crate::ns;
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use crate::Element;
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use xso::error::{Error, FromElementError};
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#[test]
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fn test_size() {
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assert_size!(ChatState, 1);
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}
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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'/>"
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.parse()
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.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'/>"
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.parse()
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.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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FromElementError::Invalid(Error::Other(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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#[cfg(not(feature = "disable-validation"))]
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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>"
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.parse()
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.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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FromElementError::Invalid(Error::Other(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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#[cfg(not(feature = "disable-validation"))]
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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=''/>"
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.parse()
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.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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FromElementError::Invalid(Error::Other(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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