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rose-ash/lib/feed/tests/dedupe.sx
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feed: verb-aware smart dedupe — reactions collapse cross-actor, posts stay per-actor + 9 tests
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
2026-06-06 16:54:21 +00:00

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; Follow-up — verb-aware (smart) dedupe. (feed-test name got expected)
; reactions (like/follow) collapse cross-actor; posts stay distinct per actor
(define
M
(feed/stream
(list
(feed/activity "alice" "like" "X" 1 (list))
(feed/activity "bob" "like" "X" 2 (list))
(feed/activity "alice" "post" "P" 3 (list))
(feed/activity "bob" "post" "P" 4 (list))
(feed/activity "alice" "follow" "C" 5 (list))
(feed/activity "bob" "follow" "C" 6 (list))))) ; collapses
(feed-test
"smart dedupe total"
(feed/count (feed/dedupe-smart M))
4)
(feed-test
"smart keeps both posts"
(feed/count (feed/by-verb (feed/dedupe-smart M) "post"))
2)
(feed-test
"smart collapses likes to one"
(feed/count (feed/by-verb (feed/dedupe-smart M) "like"))
1)
(feed-test
"smart collapses follows to one"
(feed/count (feed/by-verb (feed/dedupe-smart M) "follow"))
1)
(feed-test
"collapsed like keeps first actor"
(map feed/actor (feed/items (feed/by-verb (feed/dedupe-smart M) "like")))
(list "alice"))
; contrast: plain activity dedupe keeps cross-actor likes distinct
(feed-test
"activity dedupe keeps both likes"
(feed/count (feed/by-verb (feed/dedupe-activities M) "like"))
2)
; contrast: blanket collapse folds the two posts (same verb+object) too
(feed-test
"collapse dedupe folds posts"
(feed/count (feed/by-verb (feed/dedupe-collapse M) "post"))
1)
; smart-key dispatch
(feed-test
"smart-key reaction -> (verb object)"
(feed/smart-key (feed/activity "alice" "like" "X" 0 (list)))
(list "like" "X"))
(feed-test
"smart-key post -> (actor verb object)"
(feed/smart-key (feed/activity "alice" "post" "P" 0 (list)))
(list "alice" "post" "P"))