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v1.46.6: the detach promise, actually kept this time

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v1.46.4 and v1.46.5 documented that detaching a plan leaves the image on disk,
added guards for it, and shipped tests. The guards were never reached: they sit
behind 'not superseded', and a file that left the configuration was called
superseded. From old_refs - new_refs alone, replacing a plan, detaching one and
deleting its space are indistinguishable — so all three deleted the file, at the
moment of the save, before any scheduled pass ever ran.

Every test I wrote for this called collect_plans(d, cfg, cfg): old config equal
to new, i.e. only the scheduled pass. The transition that mattered was never
exercised. Codex reproduced it in four lines.

Classification is by owner now:
  space in both, plan A -> plan B  : the user picked another image -> removed
  space in both, plan -> none      : detached -> kept
  space gone                       : kept (the image was imported; a thirty-day
                                     grace measured from file age is meaningless
                                     anyway, it was uploaded months ago)
  space has a plan, other file     : rejected upload -> 1 h
Attachments follow the same shape: dropped from a device that still exists ->
removed (a trash button promises nothing); device gone -> kept; staging folder
-> 1 h.

Tests: a matrix per rule in the pure module, and — the part that was missing —
test_detaching_a_plan_keeps_the_file, which goes through real config/set calls:
attach, detach, assert the file is there, restart, assert again, re-attach,
replace, assert the replaced one is gone, delete the space, assert the plan
survives. Also strengthened the sweep/save race test to assert the save actually
succeeded and the config points at the specific expected file, per the report.
This commit is contained in:
Matysh
2026-07-28 21:11:11 +03:00
parent 2c7a2f849d
commit 9868f1035f
15 changed files with 288 additions and 123 deletions
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docs/TESTING.md
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@@ -239,11 +239,14 @@ Run the *core flows* (marked ★ below) in each environment at least once per mi
on the plan after a reload. Same for each tap action and each fill mode
[auto: backend test_every_display_mode_the_editor_offers_is_accepted and
neighbours, test_a_marker_showing_its_value_can_be_saved]
- [ ] Detaching a plan keeps the file (v1.46.4/v1.46.5): switch a space to
"draw", restart, wait — the image stays in `config/houseplan/plans/`
indefinitely and can be re-attached. Replacing a plan still removes the one
it replaced, immediately
[auto: unit: test_scheduled_collection_never_takes_a_detached_plan]
- [ ] Detaching a plan keeps the file (v1.46.6): switch a space to "draw" and
SAVE — the image is still in `config/houseplan/plans/` right afterwards,
and after a restart, and can be re-attached. Deleting the space keeps it
too. Replacing a plan still removes the one it replaced, immediately.
Check straight after the save: the earlier bug deleted the file at that
moment, while every scheduled-pass test passed
[auto: unit: test_plan_collection_matrix, test_attachment_collection_matrix,
backend test_detaching_a_plan_keeps_the_file]
- [ ] Rebinding a device does not eat its manuals (v1.46.5): attach two files to
a device, rebind it to another HA device — both are readable afterwards.
If a copy failed, the file it failed on is still there rather than deleted