What is the use of calling testing.M.Run() in TestMain?

[hansbogert]

in the faq there is an example of TestMain

However it calls testing.M.Run(), I'm not sure this adds anything useful, in our case it's even detrimental as it does not handle the situation well when running with Go's -race option in combination with the env variable GORACE=exitcode=0.
Also it always seems to cause warning of :

...
testing: warning: no tests to run
...

For now I've removed it in our case, is there any side-effect to this?

[lonnblad]

Hey @hansbogert

Good question, to be honest, I'm not sure why that is in the FAQ.

testing.M.Run() would execute all tests in your pkg, so I would assume it was added to the FAQ to show how you can execute godog next to your normal tests.

Maybe we should add a more describing text?

[hansbogert]

I am far from a good comment writer, but see

#353

We could also opt for just mentioning it somewhere once as a code snippet and removing it at all the current places.