Add Some JUnit test

I did:
#3710

Test and Main are combined, all the errors were fixed, please kindly review, thank you

Requesting review from @siriak and @yanglbme and @debasishbsws for approval and merging.

Is this a well-known computer science problem and algorithm? Please add some links to problem statement and algorithm explanation

Here is the problem Problem
Where it's asking to implement a method which divides 2 integers, however there is a time complexity which would not allow a most common method of using the while loop for counting, therefore I did implement a Long Division method Method wikipedia, which saves us a lot of time. However I did state it in the upper comments and in the file itself.

Then please call it LongDivision and add a link to Wikipedia

I have a left a source and short description in the Main Java class and added a comment, also the name of the Class was changed

This my 1st attempt by using integers only, I can write a code in a future and update the current method, which will accept numbers as strings, cause initially it was and integer division by long division method. The reason that I cannot apply the long numbers, is because in the problem I can't use * nor / operators

Can you please add hackoberfest tag, it was indeed difficult problem, I will update this method, however deadline is today for hacktoberfest, thank you