junit output for out tests

[alenkacz]

What would you like to be added:
Lots of tools and CI tools are used to work with junit xml output. Would be cool if our tests could produce that as well.

Why is this needed:

[alenkacz]

I think @zmalik requested this feature as well

[zmalik]

thanks @alenkacz! yeah, that's right. This feature will be a lot of help running kudo test and gaining a lot more visibility of what's going on with tests in a build.

[jbarrick-mesosphere]

Aha, looks like Go test can output as json - we can collect that output, present it nicely to the user, and also generate junit reports from that.

https://golang.org/cmd/go/#hdr-Test_packages

[nfnt]

I've used https://github.com/jstemmer/go-junit-report for this purpose before. Worked great for reporting test results in a Jenkins pipeline.

I'll take a look on how this can be integrated into kubectl kudo test.

[nfnt]

To support something like kubectl kudo test -junit, the current testing implementation will have to be refactored to not give up all control to go test in https://github.com/kudobuilder/kudo/blob/master/pkg/test/utils/testing.go#L33. Test output needs to be captured then transformed with https://github.com/jstemmer/go-junit-report/blob/master/formatter/formatter.go#L63.
As a simple workaround running

kubectl kudo test 2>&1 | go-junit-report > report.xml

should work right now.

[alenkacz]

@nfnt nice! I am fine with that - if we adjust the circle CI to do that as well and collect the output, that is good enough solution for me. Thanks for investigating! I would actually love this feature so we can collect some stats around our builds