Add Message.LastParam()

irc/conn.go

@@ -179,7 +179,7 @@ func (c *Client) recv() {
 
 		switch msg.Command {
 		case Ping:
-			go c.write("PONG :" + msg.Params[len(msg.Params)-1])
+			go c.write("PONG :" + msg.LastParam())
 
 		case Join:
 			if msg.Nick == c.GetNick() {

irc/message.go

@@ -11,6 +11,10 @@ type Message struct {
 	Params  []string
 }
 
+func (m *Message) LastParam() string {
+	return m.Params[len(m.Params)-1]
+}
+
 func parseMessage(line string) *Message {
 	line = strings.Trim(line, "\r\n")
 	msg := Message{}

irc/message_test.go

@@ -72,6 +72,10 @@ func TestParseMessage(t *testing.T) {
 	}
 }
 
+func TestLastParam(t *testing.T) {
+	assert.Equal(t, "some message", parseMessage(":user CMD #chan :some message\r\n").LastParam())
+}
+
 func TestBadMessagePanic(t *testing.T) {
 	parseMessage(":user\r\n")
 	parseMessage(":\r\n")