Add unit test for xmpp.username() and fix it

The second unit test detected a bug - they are worth the effort!

1 files changed, 2 insertions, 10 deletions

diff --git a/xmpp/jid.go b/xmpp/jid.go
index 672e934..90c1509 100644
--- a/xmpp/jid.go
+++ b/xmpp/jid.go
@@ -26,18 +26,10 @@ func username(jid string) string {
 	list := []rune(jid)
 
 	for i, v := range list {
-		if v == '/' {
-			list = list[:i]
-			break
-		}
-	}
-
-	for i, v := range list {
 		if v == '@' {
-			list = list[:i]
-			break
+			return string(list[:i])
 		}
 	}
 
-	return string(list)
+	return ""
 }