Fix and refactors tests

tests/lib/util/extend.js

@@ -4,12 +4,10 @@ var extend = require("../../../lib/util/extend")
 
 tape("test extend method", function(t) {
   var obj = {one: 1, two: 2}
+
   var extended = extend({}, obj, {two: "two", three: 3})
-
   t.notEqual(obj, extended, "extended object isn't the original object")
-
   t.notSame(obj, extended, "extended object doesn't have the same values as original object")
-
   t.notSame(obj.two, extended.two, "extended object value overwrites value from original object")
 
   t.end()