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rose-ash/lib/feed/tests/thread.sx
giles 9c4a5d1913
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feed: conversation threading — :reply-to transitive closure (thread/replies/thread-size) + 12 tests
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
2026-06-06 17:00:10 +00:00

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; Follow-up — conversation threading via :reply-to closure. (feed-test name got expected)
(define
S
(feed/stream
(list
(feed/normalize {:actor "a" :object "root" :at 1})
(feed/normalize {:actor "b" :object "r1" :at 2 :verb "reply" :reply-to "root"})
(feed/normalize {:actor "c" :object "r2" :at 3 :verb "reply" :reply-to "root"})
(feed/normalize {:actor "d" :object "r3" :at 4 :verb "reply" :reply-to "r1"})
(feed/normalize {:actor "e" :object "x" :at 5}))))
; ---------- direct replies ----------
(feed-test "direct replies to root" (feed/reply-count S "root") 2)
(feed-test "direct replies to r1" (feed/reply-count S "r1") 1)
(feed-test "no replies to r3" (feed/reply-count S "r3") 0)
(feed-test
"replies objects to root"
(map (fn (a) (get a :object)) (feed/items (feed/replies S "root")))
(list "r1" "r2"))
; ---------- thread closure ----------
(feed-test
"thread objects root (transitive)"
(feed/thread-objects S "root")
(list "root" "r1" "r2" "r3"))
(feed-test
"thread root chronological"
(map (fn (a) (get a :object)) (feed/items (feed/thread S "root")))
(list "root" "r1" "r2" "r3"))
(feed-test "thread size root" (feed/thread-size S "root") 4)
(feed-test
"thread excludes unrelated x"
(feed/-elem?
"x"
(map (fn (a) (get a :object)) (feed/items (feed/thread S "root"))))
false)
; ---------- sub-thread ----------
(feed-test
"thread from r1 (sub-tree)"
(map (fn (a) (get a :object)) (feed/items (feed/thread S "r1")))
(list "r1" "r3"))
(feed-test "thread size r1" (feed/thread-size S "r1") 2)
(feed-test "leaf thread is itself" (feed/thread-size S "r3") 1)
(feed-test "unrelated thread is itself" (feed/thread-size S "x") 1)