static {
        Random random = new Random();
        for (int i = 0; i < expectedArray.length; i++) {
            for (int j = 0; j < expectedArray[0].length; j++) {
                OptionalInt optionalInt = random.ints(0, 2).findFirst();
                expectedArray[i][j] = optionalInt.isPresent() && optionalInt.getAsInt() == 1 ? " " : "#";
            }
        }