Add xb1_test builders

[niranjanyardi]

b/323410310

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 59.04%. Comparing base (fd65e24) to head (ffb74ae). Report is 1346 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #2416      +/-   ##
==========================================
- Coverage   59.30%   59.04%   -0.26%     
==========================================
  Files        1712     1744      +32     
  Lines       78577    80006    +1429     
==========================================
+ Hits        46598    47239     +641     
- Misses      31979    32767     +788     

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[TyHolc]

I'm not familiar with workflow files so this might be a dumb question, but would the tests be run against the github devel build or the internal build from copybara?

If it's off the github build, we'll have to review all the tests to verify they pass as expected. We should also verify that the app is packaged in the expected way (for instance in our packager script we use the app name youtube for internal builds and cobalt for external builds).

[niranjanyardi]

I'm not familiar with workflow files so this might be a dumb question, but would the tests be run against the github devel build or the internal build from copybara?

If it's off the github build, we'll have to review all the tests to verify they pass as expected. We should also verify that the app is packaged in the expected way (for instance in our packager script we use the app name youtube for internal builds and cobalt for external builds).

i think its of github build - @oxve to verify. Yes we'll need to verify as you mentioned. Will address this after a test can be triggered

[niranjanyardi]

closing here, reopening as a proper feature branch: https://github.com/youtube/cobalt/pull/2438