docs: catalog tests.utils helpers and indexing rules in TESTING.md#511
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Two takeaways from PR #501 review threads: - Add a "Use helpers in tests.utils" section listing the helpers most test files reach for (save_and_reopen, undoable, reloadable, load_local_media, menu/command discovery, modal-dialog patches) so authors find them before re-inventing the same sequences. - Add an "Index timelines and UI elements directly" section: prefer range_tlui[0] over list(range_tlui)[0], and prefer UI-layer access (range_tlui[0].get_data("joined_right")) over reaching into the backend through .timeline / .rows / .components.
azfoo
approved these changes
May 13, 2026
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Summary
Two takeaways from PR #501 review threads, surfaced as guidance in
TESTING.md:tests.utilssection — short catalog of the helpers tests most often reach for (save_and_reopen,undoable,reloadable,load_local_media, menu/command discovery, modal-dialog patches). Several PR feat: range timeline #501 threads pointed at copy-pasted save-load sequences that should have beensave_and_reopen(tmp_path); this section makes the helpers discoverable.range_tlui[0]overlist(range_tlui)[0], and prefer UI-layer access (range_tlui[0].get_data("joined_right")) over reaching into the backend.Test plan