I need JUnit $4$ tests for this program:

import java.util.Random;

import java.util.Scanner;

public class DeckHelp

$\{$

$$ static String DeckChoice;

$$ static String List;

$$ public static void main

$($

String

$[$

$]$

$$args

$)$

$\{$

$$ Scanner sc

$=$

$$new Scanner

$($

System

$.$

in

$)$

;

$$ System.out.println

$($

$"$

Please enter which function you'd like

$($

Random or List

$)$

:

$"$

$)$

;

$$ String FunctionChoice

$=$

$$sc

$.$

nextLine

$($

$)$

;

$$ if

$($

FunctionChoice

$.$

equals

$($

$"$

Random

$"$

$)$

$|$

$|$

$$FunctionChoice$.$equals

$($

$"$

random

$"$

$)$

$)$

$\{$

$$ RandomDeck

$($

$)$

;

$$

$\}$

$$ else if

$($

FunctionChoice

$.$

equals

$($

$"$

List

$"$

$)$

$|$

$|$

$$FunctionChoice$.$equals

$($

$"$

list

$"$

$)$

$)$

$\{$

$$ DeckList

$($

$)$

;

$$

$\}$

$$ else

$\{$

$$ System.out.println

$($

$"$

Invalid Input. Please restart the program."

$)$

;

$$

$\}$

$$

$\}$

$$ public static String RandomDeck

$($

$)$

$\{$

$$ Random Rand

$=$

$$new Random

$($

$)$

;

$$ int DeckNum

$=$

$$Rand$.$nextInt

$($

$3$

$)$

;

$$ if

$($

DeckNum

$=$

$=$

$0$

$)$

$\{$

$$ DeckChoice

$=$

$"$Rapid$"$;

$$ System.out.println

$($

$"$

You will run Rapid today. Make them fear the bunnies."

$)$

;

$$

$\}$

$$

$$ if

$($

DeckNum

$=$

$=$

$1$

$)$

$\{$

$$ DeckChoice

$=$

$"$Hunters$"$;

$$ System.out.println

$($

$"$

You will run Hunters today. Overwhelm the board with bodies."

$)$

;

$$

$\}$

$$ if

$($

DeckNum

$=$

$=$

$2$

$)$

$\{$

$$ DeckChoice

$=$

$"$Imperial$"$;

$$ System.out.println

$($

$"$

You will run Imperial today. Hit the funny Dragon Mode into ST Paildramon combo again."

$)$

;

$$

$\}$

$$ if

$($

DeckNum

$=$

$=$

$3$

$)$

$\{$

$$ DeckChoice

$=$

$"$Gallant$"$;

$$ System.out.println

$($

$"$

Finish Gallant and run it you coward."

$)$

;

$$

$\}$

$$ return DeckChoice;

$$

$\}$

$$

$$ public static String DeckList

$($

$)$

$\{$

$$ Scanner sc

$=$

$$new Scanner

$($

System

$.$

in

$)$

;

$$ System.out.println

$($

$"$

Please enter which deck you'd like to see

$($

Rapid

$,$

$$Imperial$,$ Hunters, or Gallant

$)$

:

$"$

$)$

;

$$ String ListChoice

$=$

$$sc

$.$

nextLine

$($

$)$

;

$$ if

$($

ListChoice

$.$

equals

$($

$"$

Rapid

$"$

$)$

$|$

$|$

$$ListChoice$.$equals

$($

$"$

rapid

$"$

$)$

$)$

$\{$

$$ System.out.println

$($

$"$

$[$

List

$]$

$"$

$)$

;

$$

$$ List

$=$

$"$Rapid$"$;

$$

$\}$

$$ else if

$($

ListChoice

$.$

equals

$($

$"$

Imperial

$"$

$)$

$|$

$|$

$$ListChoice$.$equals

$($

$"$

imperial

$"$

$)$

$)$

$\{$

$$ System.out.println

$($

$"$

$[$

List

$]$

$"$

$)$

;

$$

$$ List

$=$

$"$Imperial$"$;

$$

$\}$

$$ else if

$($

ListChoice

$.$

equals

$($

$"$

Hunters

$"$

$)$

$|$

$|$

$$ListChoice$.$equals

$($

$"$

hunters

$"$

$)$

$)$

$\{$

$$ System.out.println

$($

$"$

$[$

List

$]$

$"$

$)$

;

$$

$$ List

$=$

$"$Hunters$"$;

$$

$\}$

$$ else if

$($

ListChoice

$.$

equals

$($

$"$

Gallant

$"$

$)$

$|$

$|$

$$ListChoice$.$equals

$($

$"$

gallant

$"$

$)$

$)$

$\{$

$$ System.out.println

$($

$"$

$[$

List

$]$

$"$

$)$

;

$$

$$ List

$=$

$"$Gallant$"$;

$$

$\}$

$$ else

$\{$

$$ System.out.println

$($

$"$

Invalid Input. Please restart the program."

$)$

;

$$

$\}$

$$ return List;

$$

$\}$

$\}$