//test basic replacement { var week = ["monday", "tuesday", "wednesday", "thursday", "friday", "saturday", "sunday"]; week[3] = "Holiday"; assert week == ["monday", "tuesday", "wednesday", "Holiday", "friday", "saturday", "sunday"], "basic replacement failed"; } //test backwards { var week = ["monday", "tuesday", "wednesday", "thursday", "friday", "saturday", "sunday"]; assert week[::-1] == ["sunday", "saturday", "friday", "thursday", "wednesday", "tuesday", "monday"], "backwards failed"; } //test array weird manipulation { var week = ["monday", "tuesday", "wednesday", "thursday", "friday", "saturday", "sunday"]; week[::-2] = ["first", "second", "third"]; assert week == ["monday", "tuesday", "third", "thursday", "second", "saturday", "first"], "array weird manipulation failed"; } print "All good";