Question

1. Write a Junit test method that takes 2 Arrays of type Integer[], and tests whether these 2 Arrays are equal or not, and also if the elements are all even numbers. Describe under what conditions these 2 Arrays would be considered equal.

Answer 1

Kindly upvote if this helped

They will be equal if:
- Both array have same length
- Both array have same elements at the same indexes.
- We will also check if elements are even (not a condition for being equal)

I have implemented a method which checks both, it should be equal and should only have even numbers
If you want separate, just create a seperate function to check for even as I did in OR part of the implemented method.


Class to TEST:

- Package name I used is search

package search;

public class ArrTest {
public boolean compare(int []a , int []b) {
        if(a.length !=b.length) {
                return false;
        }else {
                for(int i=0;i<a.length;i++) {
                        if(a[i]!=b[i]  || a[i]%2!=0 ) {
                                return false;
                        }
                }
        }
        return true;
}
}

Junit class:

package search;

import static org.junit.Assert.*;

import org.junit.Test;

public class ArrayTest {

        @Test
        public void ArrayTest() {
                ArrTest t = new ArrTest();
                int []a = {1,2,3,4,5,6};
                int []b = {1,2,3,4,5,6};
                int []c = {2,4,6,8};
                int []d = {2,4,6,8};
                boolean areEqualAndEven = t.compare(a,b);
                assertEquals(areEqualAndEven, true);
        }

}

OUTPUT (a,b) -> failed as all elements in a and b are not even.




Passed as elements in a and b are equal, same and even