Mocha test results not visible in sponge output

[grayside]

The lack of mocha results makes it more difficult to evaluate test failures. This is presumably the result of switching to xunit output in a spong_log.xml file in #1665.

Based on some discussion in mochajs/mocha#2184 to support multiple reporters at once, we should be able to restore console output without significant time overhead.

[fhinkel]

I'm wondering why sponge doesn't have the xml file as artifact cc @tbpg

[grayside]

When I look at the output, I still don't see the mocha test output. As a result I don't have an easy way to triage the test failure short of locally running the tests. I don't see any further artifacts.

Is there a reason why we can't pursue inline mocha output as part of the overall log output?

Examples include:

• https://g3c.corp.google.com/results/invocations/e5f9038d-e794-48dd-9c64-ead9524ee340/targets/cloud-devrel%2Fnodejs-docs-samples%2Frelease%2Frun%2Flogging-manual/log
• https://g3c.corp.google.com/results/invocations/e5f9038d-e794-48dd-9c64-ead9524ee340/targets/cloud-devrel%2Fnodejs-docs-samples%2Frelease%2Frun%2Flogging-manual/log

[grayside]

@fhinkel do you have thoughts on the best path forward? I have a number of issues in the run/logging-manual sample that I can't reproduce locally. I can only assume general flakiness without more information.

[fhinkel]

Was this not fixed with #1711? There should be a separate log file in sponge.

[grayside]

1. In poking around, I only saw one log file in the artifacts and it was the same content as the main invocation log.
2. When you say "separate", is the fix that we're going to look in two different files for the end-to-end log output?

[fhinkel]

This tests has the correct output:

https://g3c.corp.google.com/results/invocations/f1ac27e7-10cb-499b-821f-1d662112106a/targets

A lot of other CI runs show the error "XML file not found", and there's no way to see the output.

Yes, the results from mocha are in a separate file (${project}-sponge.xml). The buildcop finds that file, otherwise it wouldn't open an issue, but Sponge doesn't find it for a lot of projects 🤔

[fhinkel]

This new test also has correct output:

#1786