I'm sorry for my late reply. This week I was extremely busy with work this week.

@brennantaylor
Wow, Xcode has that feature! I didn't know that. I jumped to the conclusion,conclusions. Thanks a lot!
But it seems to be a bit of a mistake. According to the session of WWDC 2016, `-only-testing` is correct. It is a feature provided after Xcode 7.3. We can specify it like this:

[image]

@lam2558 @ohayon
I also didn't know about passing `xcargs``xcargs.` I put the following code on `Snapfile` and it worked fine!

[code]

In my case, this solution reduced the time for running `snapshot` to half!

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So, I think that it would be nice if this option specified by default for `snapshot`, I think.
It looks hard to specify `-only-testing` dynamically though.
How What do you think?