Assert keeps going after failure, but require immediately fails
the tests, making it easier to find the output related to the test
failure, rather than having to comb through a bunch of subsequent
assertion failures. For equality tests, we may or may not want to
continue, but for error checks we almost always want to immediately
fail the test. Exceptions can be changed as-needed.
* hotfix: return error instead of log at `FromMapAndOption`
* chore: show error message
* hotfix: use correct function
* hotix: use `t.Helper()` and fix `t *testing.T order
* hotfix: wrapt the error of `FromMapAndOption`
* hotfix: meaningful message for an error
* hotfix: summarize in one line
* hotfix: fix the abandoned error and show meaningful message
* hotfix: start with helper function
* Keep TODO comment
* Move api/filesys to kyaml/filesys
* Add deprecated version of api/filesys with aliases to new code
* Use new kyaml/filesys package and update dependencies
* Migrate to kyaml/filesys and update dependencies
* Skip tests that break on Windows
