jolt/test/unit/lazy-seq-test.janet
Yogthos 16428179fa test: restructure into unit / integration / spec layers + shared harness
Reorganize the flat 49-file test/ into three layers (jpm test recurses, so all
are still discovered):
- test/unit/        white-box component tests (reader, evaluator, types,
                    persistent-map, lazy-seq, macro, interop, compiler)
- test/integration/ cross-cutting + regression batteries (conformance, jank,
                    sci-bootstrap/runtime, features, systematic-coverage, api,
                    core, namespaces, ported clojure suites) and
   .../ports/       ported clojure/cljs test batches pending consolidation
- test/spec/        the behavioral contract (built out in following commits)
- test/support/harness.janet  shared defspec table runner (cases compared via
                    Jolt's own =, with a :throws sentinel) + expect= helpers

Files moved with git mv (history preserved) and import paths fixed for depth.
jpm test green. README Test section updated.

Next: build out test/spec/ to cover the public API area-by-area, mining the
integration batteries and filling gaps.
2026-06-05 00:00:16 -04:00

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2.4 KiB
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(use ../../src/jolt/api)
(defn ct-eval [ctx s] (normalize-pvecs (eval-string ctx s)))
(print "LazySeq Tests")
(print "1: lazy-seq from list...")
(let [ctx (init)]
(assert (= true (ct-eval ctx "(= [1 2 3] (take 10 (lazy-seq [1 2 3])))")) "lazy-seq list")
(assert (= true (ct-eval ctx "(= 3 (count (lazy-seq [1 2 3])))")) "count lazy-seq"))
(print " ok")
(print "2: lazy-cat concatenation...")
(let [ctx (init)]
(assert (= true (ct-eval ctx "(= [1 2 3 4] (take 10 (lazy-cat [1 2] [3 4])))")) "lazy-cat concat")
(assert (= true (ct-eval ctx "(= 4 (count (lazy-cat [1 2] [3 4])))")) "lazy-cat count"))
(print " ok")
(print "3: first/rest on lazy-seqs...")
(let [ctx (init)]
(assert (= true (ct-eval ctx "(= 1 (first (lazy-seq [1 2 3])))")) "first lazy")
(assert (= true (ct-eval ctx "(= 2 (first (rest (lazy-seq [1 2 3]))))")) "first rest lazy"))
(print " ok")
(print "4: drop/nth on lazy-seqs...")
(let [ctx (init)]
(assert (= true (ct-eval ctx "(= [3 4 5] (take 10 (drop 2 (lazy-seq [1 2 3 4 5]))))")) "drop 2 take 10")
(assert (= true (ct-eval ctx "(= 3 (nth (lazy-seq [1 2 3 4 5]) 2))")) "nth lazy"))
(print " ok")
(print "5: concat on lazy-seqs...")
(let [ctx (init)]
(assert (= true (ct-eval ctx "(= 5 (count (concat (lazy-seq [1 2]) (lazy-seq [3 4 5]))))")) "concat lazy"))
(print " ok")
(print "6: reverse/sort on lazy-seqs...")
(let [ctx (init)]
(assert (= true (ct-eval ctx "(= [3 2 1] (reverse (lazy-seq [1 2 3])))")) "reverse lazy")
(assert (= true (ct-eval ctx "(= [1 2 3] (sort (lazy-seq [3 1 2])))")) "sort lazy"))
(print " ok")
(print "7: distinct on lazy-seqs...")
(let [ctx (init)]
(assert (= true (ct-eval ctx "(= [1 2 3] (distinct (lazy-seq [1 2 1 3 2])))")) "distinct lazy"))
(print " ok")
(print "8: fib-seq (deferred — eager core-map needs lazy upgrade)...")
(let [ctx (init)]
(print " The cell-by-cell lazy-seq architecture is correct. concat, take,")
(print " drop, nth, first, rest all work with self-referencing patterns.")
(print " core-map still eagerly realizes all lazy-seq arguments, which")
(print " loops on infinite sequences. Making core-map return a lazy")
(print " result would complete the self-referencing lazy-seq story.")
(print " When fixed: (def fib-seq (lazy-cat [0 1] (map + (rest fib-seq) fib-seq)))")
(print " → (take 10 fib-seq) = [0 1 1 2 3 5 8 13 21 34]"))
(print " ok (deferred — core-map needs lazy upgrade)")
(print "\nAll LazySeq tests passed!")