Add basic test for messages

message.go

@@ -21,6 +21,19 @@ func (Message) Name() string {
 	return "message"
 }
 
+func NewMessage(msgtype, from, to, id, lang string) Message {
+	return Message{
+		XMLName: xml.Name{Local: "message"},
+		PacketAttrs: PacketAttrs{
+			Id:   id,
+			From: from,
+			To:   to,
+			Type: msgtype,
+			Lang: lang,
+		},
+	}
+}
+
 type messageDecoder struct{}
 
 var message messageDecoder

message_test.go

@@ -0,0 +1,28 @@
+package xmpp
+
+import (
+	"encoding/xml"
+	"testing"
+
+	"github.com/google/go-cmp/cmp"
+)
+
+func TestGenerateMessage(t *testing.T) {
+	message := NewMessage("chat", "admin@localhost", "test@localhost", "1", "en")
+	message.Body = "Hi"
+	message.Subject = "Msg Subject"
+
+	data, err := xml.Marshal(message)
+	if err != nil {
+		t.Errorf("cannot marshal xml structure")
+	}
+
+	parsedMessage := Message{}
+	if err = xml.Unmarshal(data, &parsedMessage); err != nil {
+		t.Errorf("Unmarshal(%s) returned error", data)
+	}
+
+	if !xmlEqual(parsedMessage.Body, message.Body) {
+		t.Errorf("non matching items\n%s", cmp.Diff(parsedMessage.Body, message.Body))
+	}
+}