Add sample test

README.md

@@ -4,3 +4,10 @@ A client side network protocol implementation of the game teeworlds.
 
 WORK IN PROGRESS
 
+
+## tests
+
+```
+go test
+```
+

teeworlds.go

@@ -1,4 +1,4 @@
-package main
+package teeworlds
 
 import (
 	"bufio"

teeworlds_test.go

@@ -0,0 +1,16 @@
+package teeworlds
+
+import (
+	"testing"
+)
+
+func TestIsCtrlMsg(t *testing.T) {
+	data := []byte{0x04, 0x00, 0x00, 0xff, 0xff, 0xff, 0xff, 0x04}
+
+	got := isCtrlMsg(data)
+	want := true
+
+	if got != want {
+		t.Errorf("got %t, wanted %t", got, want)
+	}
+}