Helm chart unit tests run here using the helm-unittest Helm plugin.
Note: there are multiple forks for the helm-unittest plugin. They are not compatible and don't provide the same featureset (e.g. including templates from sub-directories). Our tests rely on features and bugfixes that are only available on the quintush fork (which seems to be the most maintained at the time of writing)
If you get a snapshot error during your testing, you should verify that your changes intended to alter the output, then run this command from the root of your Teleport checkout to update the snapshots:
make -C build.assets test-helm-update-snapshots
After this, re-run the tests to make sure everything is fine:
make -C build.assets test-helm
Commit the updated snapshots along with your changes.