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rose-ash/lib/commerce/tests/federation.sx
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commerce: reconciliation queries + federated-catalog stub (32 tests) — Phase 4 done
recon.sx — reconciliation as relational queries over the ledger: per-order
summary tuples + recon-statuso/neto/mismatcho miniKanren relations, so
overpaid/underpaid/settled and "settled to net N" are backward run* queries.
Tests cover double-charge guard, partial refund, webhook replay.

federation.sx (out-of-scope stub) — a federated catalog is the union of each
instance's product facts, so the same relations query cross-instance
(instances-with-sku, sku-offers, cheapest-offer). In-process mock, no network.

Completes the commerce-on-sx roadmap (Phases 1-4). Total 185/185 across 11 suites.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
2026-06-07 09:54:25 +00:00

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;; lib/commerce/tests/federation.sx — federated catalog (out-of-scope stub).
;; Uses (commerce-test name got expected) provided by conformance.sh.
(define
cat-a
(make-catalog
(list
(list "widget" 1000 :standard)
(list "book" 800 :zero-rated))
(list)
(list)))
(define
cat-b
(make-catalog
(list
(list "widget" 900 :standard)
(list "tea" 1200 :reduced))
(list)
(list)))
(define
cat-c
(make-catalog (list (list "widget" 1100 :standard)) (list) (list)))
(define
fed
(federation-add
(federation-add (make-federation :alpha cat-a) :beta cat-b)
:gamma cat-c))
;; --- structure ---
(commerce-test "is-stub" federation-stub? true)
(commerce-test
"instances"
(federation-instances fed)
(list :alpha :beta :gamma))
(commerce-test "product-count" (len (fed-products fed)) 5)
;; --- forward query ---
(commerce-test
"price-at-instance"
(run* p (fed-priceo fed :beta "widget" p))
(list 900))
;; --- backward queries (the showcase) ---
(commerce-test
"instances-with-widget"
(instances-with-sku fed "widget")
(list :alpha :beta :gamma))
(commerce-test
"instances-with-book"
(instances-with-sku fed "book")
(list :alpha))
(commerce-test
"instances-with-tea"
(instances-with-sku fed "tea")
(list :beta))
(commerce-test
"instance-by-price-backward"
(run* inst (fresh (c) (fed-producto fed inst "widget" 1100 c)))
(list :gamma))
;; --- offers + cheapest (deterministic selection) ---
(commerce-test
"widget-offers"
(sku-offers fed "widget")
(list
(list 1000 :alpha)
(list 900 :beta)
(list 1100 :gamma)))
(commerce-test
"cheapest-widget"
(cheapest-offer fed "widget")
(list 900 :beta))
(commerce-test
"cheapest-book"
(cheapest-offer fed "book")
(list 800 :alpha))
(commerce-test "cheapest-missing" (cheapest-offer fed "ghost") nil)