Add a User Nickname (XEP-0172) parser and serialiser.

src/lib.rs

@@ -110,6 +110,9 @@ pub mod caps;
 /// XEP-0166: Jingle
 pub mod jingle;
 
+/// XEP-0172: User Nickname
+pub mod nick;
+
 /// XEP-0184: Message Delivery Receipts
 pub mod receipts;
 

src/nick.rs

@@ -0,0 +1,54 @@
+// Copyright (c) 2018 Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
+//
+// This Source Code Form is subject to the terms of the Mozilla Public
+// License, v. 2.0. If a copy of the MPL was not distributed with this
+// file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+generate_elem_id!(
+    /// Represents a global, memorable, friendly or informal name chosen by a user.
+    Nick, "nick", NICK
+);
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+    use try_from::TryFrom;
+    use minidom::Element;
+    use error::Error;
+
+    #[test]
+    fn test_simple() {
+        let elem: Element = "<nick xmlns='http://jabber.org/protocol/nick'>Link Mauve</nick>".parse().unwrap();
+        let nick = Nick::try_from(elem).unwrap();
+        assert_eq!(&nick.0, "Link Mauve");
+    }
+
+    #[test]
+    fn test_serialise() {
+        let elem1 = Element::from(Nick(String::from("Link Mauve")));
+        let elem2: Element = "<nick xmlns='http://jabber.org/protocol/nick'>Link Mauve</nick>".parse().unwrap();
+        assert_eq!(elem1, elem2);
+    }
+
+    #[test]
+    fn test_invalid() {
+        let elem: Element = "<nick xmlns='http://jabber.org/protocol/nick'><coucou/></nick>".parse().unwrap();
+        let error = Nick::try_from(elem).unwrap_err();
+        let message = match error {
+            Error::ParseError(string) => string,
+            _ => panic!(),
+        };
+        assert_eq!(message, "Unknown child in nick element.");
+    }
+
+    #[test]
+    fn test_invalid_attribute() {
+        let elem: Element = "<nick xmlns='http://jabber.org/protocol/nick' coucou=''/>".parse().unwrap();
+        let error = Nick::try_from(elem).unwrap_err();
+        let message = match error {
+            Error::ParseError(string) => string,
+            _ => panic!(),
+        };
+        assert_eq!(message, "Unknown attribute in nick element.");
+    }
+}

src/ns.rs

@@ -74,6 +74,9 @@ pub const CAPS: &str = "http://jabber.org/protocol/caps";
 /// XEP-0166: Jingle
 pub const JINGLE: &str = "urn:xmpp:jingle:1";
 
+/// XEP-0172: User Nickname
+pub const NICK: &str = "http://jabber.org/protocol/nick";
+
 /// XEP-0184: Message Delivery Receipts
 pub const RECEIPTS: &str = "urn:xmpp:receipts";