iOS unit tests: how to handle completion of tests?

I want to write path of test artifacts at the end of output in console. It would be handy. And I'm also just curious.

I can write something in the first line of main function, but there are lots of logs about failures in standard frameworks at the beginning (http://ift.tt/2x6R3eA) and I only can write something after them.

It seems that XCTest somehow terminate the app, app delegate doesn't receive lifecycle callbacks, program exits before main function from main.m.