filter out warnings when validating against namespaces in tests

[stephprince]

Motivation

When running the tests in test.py, the validation module was trying to validate against several invalid namespaces.

2024-09-05 18:22:05,083 - INFO - Namespace found: <frozen
======================================================================
2024-09-05 18:22:05,083 - INFO - Namespace found: runpy>:128:
======================================================================
2024-09-05 18:22:05,083 - INFO - Namespace found: RuntimeWarning:
======================================================================
2024-09-05 18:22:05,083 - INFO - Namespace found: 'pynwb.validate'
======================================================================
2024-09-05 18:22:05,083 - INFO - Namespace found: found
======================================================================
2024-09-05 18:22:05,083 - INFO - Namespace found: in
======================================================================
2024-09-05 18:22:05,083 - INFO - Namespace found: sys.modules
======================================================================
2024-09-05 18:22:05,083 - INFO - Namespace found: after
======================================================================
2024-09-05 18:22:05,083 - INFO - Namespace found: import
======================================================================
2024-09-05 18:22:05,083 - INFO - Namespace found: of
======================================================================
2024-09-05 18:22:05,083 - INFO - Namespace found: package
======================================================================
2024-09-05 18:22:05,083 - INFO - Namespace found: 'pynwb',
======================================================================
2024-09-05 18:22:05,083 - INFO - Namespace found: but
======================================================================
2024-09-05 18:22:05,083 - INFO - Namespace found: prior
======================================================================
2024-09-05 18:22:05,083 - INFO - Namespace found: to
======================================================================
2024-09-05 18:22:05,083 - INFO - Namespace found: execution
======================================================================
2024-09-05 18:22:05,083 - INFO - Namespace found: of
======================================================================
2024-09-05 18:22:05,083 - INFO - Namespace found: 'pynwb.validate';

The namespaces are retrieved from the stdout of python -m pynwb.validate --list-namespaces, which could still be error prone. Another option would be to replace the get_namespaces function in test.py entirely with:

 from pynwb.validate import _get_cached_namespaces_to_validate
 namespaces, _, _ = _get_cached_namespaces_to_validate(nwb)

How to test the behavior?

python test.py -v -w

Checklist

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 92.20%. Comparing base (1178e0d) to head (f28fedb).
Report is 1 commits behind head on dev.

Additional details and impacted files

@@           Coverage Diff           @@
##              dev    #1961   +/-   ##
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  Coverage   92.20%   92.20%           
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  Files          27       27           
  Lines        2656     2656           
  Branches      693      693           
=======================================
  Hits         2449     2449           
  Misses        134      134           
  Partials       73       73           

Flag	Coverage Δ
integration	73.19% <100.00%> (ø)
unit	83.77% <66.66%> (ø)

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[rly]

I prefer the alternate option. Filtering out all warnings feels kind of hacky. We should just get the cached namespaces through another means, as you suggested. I would change _get_cached_namespaces_to_validate to be public though (remove the leading underscore).