(#40) Adjustes window size

Author: s1hofmann

test/window-integration-tests/constants.js

@@ -1,7 +1,7 @@
 const POS_X = 50;
 const POS_Y = 100;
-const WIDTH = 800;
-const HEIGTH = 600;
+const WIDTH = 400;
+const HEIGTH = 300;
 const TITLE = "libnut window test";
 
 module.exports = {