Create JUnit test cases $($code$)$ in Eclipse to test the Java code given below. Write the code for test cases for each of the following assertions to test the expected output of each method in math class.

assertEquals$($message$,$ expectedValue, value$)$

assertNotEquals$($message$,$ value$1,$ value$2)$

Calculator Class

package assignment$1$;

import java.util.Scanner;

public class calculator $\{$

public static void main$($String$[]$ args$)\{$

Scanner input $=$ new Scanner$($System$.$in$)$;

Math Math $=$ new MathTest$()$;

double answer $=0$;

double inputA, inputB;

char operator;

boolean done $=$ false;

while $($done $==$ false$)\{$

System.out.print$("$Please enter your sum: $")$;

inputA $=$ input.nextDouble$()$;

operator $=$ input.next$().$charAt$(0)$;

inputB $=$ input.nextDouble$()$;

switch $($operator$)\{$

case $\text{'}+\text{'}$: answer $=$ Math.add$($inputA$,$ inputB$)$;

break;

case $\text{'}-\text{'}$: answer $=$ Math.subtract$($inputA$,$ inputB$)$;

break;

case $\text{'}*\text{'}$: answer $=$ Math.multiply$($inputA$,$ inputB$)$;

break;

case $\text{'}/\text{'}$: answer $=$ Math.divide$($inputA$,$ inputB$)$;

break;

case $\text{'}^\text{'}$: answer $=$ Math.exponent$($inputA$,$ inputB$)$;

break;

$\}$

System.out.println$($answer$)$;

$\}$

input.close$()$;

package assignment$1$;

public class doubleMath $\{$

double add$($double a$,$ double b$)\{$

double answer $=$ a$+$b;

return answer;

$\}$

double subtract$($double a$,$ double b$)\{$

double answer $=$ a$-$b;

return answer;

$\}$

double multiply$($double a$,$ double b$)\{$

double answer $=$ a$*$b;

return answer;

$\}$

double divide$($double a$,$ double b$)\{$

double answer $=$ a$/$b;

return answer;

$\}$

double power$($double a$,$ double b$)\{$

double answer $=$a;

for $($int x$=2$; x$<=$b; x$++)\{$

answer $*=$ a;

$\}$

return answer;

$\}$

$\}$