Just put the repo in your push_swap_project, go to repo and just make. For change the number of test or the size of stack, go to makefile and change NUMBER_OF_TESTS or SIZE_OF_STACK. You can choose, MIN_VALUE and MAX_VALUE, go to Makekile.
You can change if you wan't a really random test or a predefined tests. Change RANDOM to yes for random test or no for predefined test.
If you print something that is not a command, a file name command_file_(N°TEST) will be created, check this file. If you the stack_a is not sort or if is the stack_b is not empty, a file named stacks_of_test(N°TEST) will be created, you'll be able to check the values.
At the end of program, you get, the number of successful tests and the failed tests, the average of moves of successful test.