Write well$-$documented JUnit test cases and a well$-$documented Java class containing

the method Fun in Task $1($use class name T$2),$ and show the code coverage obtained when

$1.$ public int Fun$($int x$,$ int k$,$ int y$)\{$

$2.$ int i;

$3.$ for $($i $=$ x; i $<$ y; i$++)\{$

$4.$ if $($x$\%5<3)\{$

$5.$ k $=$ y $-$ x;

$6.$ y $=$ y $+$ i;

$7.\}$

$8.$ else$\{$

$9.$ x $=$ k $-2$;

$10.$ y $=$ y $+$ x;

$11.\}$

$12.$ y $=$ y $-$ x;

$13.$ i $=$ i $+2$;

$14.\}$

$15.$ if $($x $<0||$ y $<0)\{$

$16.$ k $=$ y $$ x;

$17.\}$

$18.$ else$\{$

$19.$ x $=$ y $+$ k;

$20.\}$

$21.$ return x;

$22.\}$

executing the test cases developed for