This tool has been developed to do the stress testing of test cases and compare the differences of outputs produced by two .cpp files on the website https://text-compare.com/.

1. Suppose you have written a code using brute force approach which is correct and you have also written a optimal solution which may or may not be 100% correct so what we want is to compare it with different random test cases and quickly observe the differences if any. Hence this tool aids you easily and help you to do faster debugging.
2. If you are into competitive programming of course we need to debug our solution while we are up solving the problems that we failed to solve during contest, hence one can copy some correct code of some user from the contest website let's say it is a optimal code and our incorrect code that was giving us WA as brute code. Now again we have two .cpp codes whose output we want to compare which can be done via this tool.
3. One can also use this tool during software testing and development.

Imagine if you don't have this tool then manually you need to run two .cpp codes everytime and then supply inputs on the terminal by typing it. So just think when you are done doing this all you need to observe both o/p files carefully to notice any differences. Clearly this is really hectic and obviously there are chances that we may miss some differences and ultimately ending up getting tierd.

It's very simple to use however little bit complicated to structure the files but if you follow line by line you won't miss it.

Somewhere put the testing folder with it all files inside it and copy the path of testing folder and make three changes in the files present inside the testing folder as shown:

h1.h for #define _2 and #define _1 set path to your path.

chk.py here open it and make the change at line 4 by replacing the path with your own path.

chk.py for this line options.add_argument("user-data-dir=C:\\Users\\1kusp\\AppData\\Local\\Google\\Chrome\\User Data\\Default") replace 1kusp with your name

I will demonstrate it for a codechef problem:

https://www.codechef.com/COOK140B/problems/DIGSMPAR

Suppose your solution: https://www.codechef.com/viewsolution/61889412 (let's say you want to test your code aganist someone's code who has written it correct; you know your code is not correct and you just want to know for which test cases it fails since you have manually tried too much for debugging and now you want some automation)

Suppose someone's solution: https://www.codechef.com/viewsolution/61887842 (you know this is optimal and 100% correct)

Now we need to modify three files as shown for above problem inside the testing directory

Run test_case_generator.cpp to generate o/p file named as in.txt or you may manually put test cases if you wish.

Note:: Your left side window dispaly the optimal/correct o/p while right side shows brute/incorrect o/p on the website.