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conda-try mirrors condu-try but on the chosen clause it (mk-bind (head-goal s) (rest-conj)) — all head answers flow through. condu by contrast applies rest-conj to (first peek), keeping only one head answer. 7 new tests covering: first-non-failing-wins, skip-failing-head, all-fail, no-clauses, the conda-vs-condu divergence (`(1 2)` vs `(1)`), rest-goals running on every head answer, and the soft-cut no-fallthrough property. 169/169 cumulative.
76 lines
1.5 KiB
Plaintext
76 lines
1.5 KiB
Plaintext
;; lib/minikanren/tests/conda.sx — Phase 5 piece A tests for `conda`.
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;; --- conda commits to first non-failing head, keeps ALL its answers ---
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(mk-test
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"conda-first-clause-keeps-all"
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(run*
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q
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(conda
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((mk-disj (== q 1) (== q 2)))
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((== q 100))))
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(list 1 2))
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(mk-test
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"conda-skips-failing-head"
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(run*
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q
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(conda
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((== 1 2))
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((mk-disj (== q 10) (== q 20)))))
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(list 10 20))
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(mk-test
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"conda-all-fail"
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(run*
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q
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(conda ((== 1 2)) ((== 3 4))))
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(list))
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(mk-test "conda-no-clauses" (run* q (conda)) (list))
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;; --- conda DIFFERS from condu: conda keeps all head answers ---
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(mk-test
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"conda-vs-condu-divergence"
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(list
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(run*
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q
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(conda
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((mk-disj (== q 1) (== q 2)))
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((== q 100))))
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(run*
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q
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(condu
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((mk-disj (== q 1) (== q 2)))
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((== q 100)))))
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(list (list 1 2) (list 1)))
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;; --- conda head's rest-goals run on every head answer ---
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(mk-test
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"conda-rest-goals-run-on-all-answers"
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(run*
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q
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(fresh
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(x r)
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(conda
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((mk-disj (== x 1) (== x 2))
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(== r (list :tag x))))
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(== q r)))
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(list (list :tag 1) (list :tag 2)))
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;; --- if rest-goals fail on a head answer, that head answer is filtered;
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;; the clause does not fall through to next clauses (per soft-cut). ---
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(mk-test
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"conda-rest-fails-no-fallthrough"
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(run*
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q
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(conda
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((mk-disj (== q 1) (== q 2)) (== q 99))
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((== q 200))))
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(list))
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(mk-tests-run!)
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