(test-group
  "canonical-serialize"
  (test "nil" (assert= (canonical-serialize nil) "nil"))
  (test
    "booleans"
    (assert= (canonical-serialize true) "true")
    (assert= (canonical-serialize false) "false"))
  (test
    "integers"
    (assert= (canonical-serialize 0) "0")
    (assert= (canonical-serialize 42) "42")
    (assert= (canonical-serialize -7) "-7"))
  (test
    "strings"
    (assert= (canonical-serialize "hello") "\"hello\"")
    (assert= (canonical-serialize "") "\"\"")
    (assert= (canonical-serialize "a\"b") "\"a\\\"b\""))
  (test
    "symbols"
    (assert= (canonical-serialize (quote deref)) "deref")
    (assert= (canonical-serialize (quote swap!)) "swap!"))
  (test
    "keywords"
    (assert= (canonical-serialize :class) ":class")
    (assert= (canonical-serialize :arity) ":arity"))
  (test "empty list" (assert= (canonical-serialize (list)) "()"))
  (test "flat list" (assert= (canonical-serialize (list 1 2 3)) "(1 2 3)"))
  (test
    "nested list"
    (assert=
      (canonical-serialize
        (list (quote div) :class "flex" (list (quote h2) "title")))
      "(div :class \"flex\" (h2 \"title\"))"))
  (test
    "dict keys sorted"
    (let
      ((d (dict "zebra" 1 "alpha" 2 "middle" 3)))
      (assert= (canonical-serialize d) "{:alpha 2 :middle 3 :zebra 1}")))
  (test
    "dict with nested values"
    (let
      ((d (dict "a" (list 1 2) "b" "hello")))
      (assert= (canonical-serialize d) "{:a (1 2) :b \"hello\"}"))))

(test-group
  "content-id"
  (test
    "same expression same CID"
    (assert= (content-id (list 1 2 3)) (content-id (list 1 2 3))))
  (test
    "different expression different CID"
    (assert
      (not (= (content-id (list 1 2 3)) (content-id (list 1 2 4))))))
  (test
    "CID is a hex string"
    (let
      ((cid (content-id 42)))
      (assert (string? cid))
      (assert= (len cid) 64)))
  (test
    "short CID is 16 chars"
    (let ((cid (content-id-short 42))) (assert= (len cid) 16)))
  (test
    "short CID is prefix of full CID"
    (let
      ((full (content-id 42)) (short (content-id-short 42)))
      (assert= short (slice full 0 16)))))

(test-group
  "bytecode-module"
  (test
    "make and query"
    (let
      ((m (make-bytecode-module 1 "abc123" (list (quote code) :bytecode (list 1 2 3)))))
      (assert (bytecode-module? m))
      (assert= (bytecode-module-version m) 1)
      (assert= (bytecode-module-source-hash m) "abc123")))
  (test
    "non-module fails predicate"
    (assert (not (bytecode-module? (list 1 2 3))))
    (assert (not (bytecode-module? "hello")))))

(test-group
  "provenance"
  (test
    "make provenance record"
    (let
      ((p (make-provenance "src-cid" "bc-cid" "compiler-cid" "2026-03-27T00:00:00Z")))
      (assert= (first p) (quote provenance))
      (assert= (nth p 2) "src-cid")
      (assert= (nth p 4) "bc-cid"))))