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38 lines
1.7 KiB
Python
38 lines
1.7 KiB
Python
"""CalDAV sync must not prune the window when it can't fully read the server.
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The prune deletes local caldav rows whose UID the server didn't return. `seen_uids`
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is built only from objects that parsed, so any parse failure (total or partial)
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makes it an incomplete view of the server:
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- total failure: `seen_uids` is empty and the prune falls back to `uid.isnot(None)`
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(match-all), wiping every event in the window;
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- partial failure: the events that failed to parse are absent from `seen_uids`, so
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`~uid.in_(seen_uids)` deletes those still-upstream events.
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`_should_prune_window` therefore only allows the prune on a clean read.
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"""
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from src.caldav_sync import _should_prune_window
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def test_prune_runs_on_clean_read():
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# Clean read with events -> the normal ~uid.in_(seen) prune is safe.
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assert _should_prune_window({"uid-a", "uid-b"}, parse_failed=False) is True
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def test_prune_runs_when_calendar_genuinely_empty():
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# Clean read, no objects -> genuinely empty window -> safe to prune.
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assert _should_prune_window(set(), parse_failed=False) is True
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def test_prune_skipped_when_all_objects_failed_to_parse():
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# Every object failed -> empty seen_uids is "couldn't read", not "empty
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# calendar" -> must NOT prune (would delete the whole window).
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assert _should_prune_window(set(), parse_failed=True) is False
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def test_prune_skipped_on_partial_parse_failure():
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# Some objects parsed and at least one failed: seen_uids is incomplete, so
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# pruning would delete the unparsed-but-still-upstream events. Skipping the
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# prune keeps the local copy of the unparsed event instead of deleting it.
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assert _should_prune_window({"parsed-uid"}, parse_failed=True) is False
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