e1a6d77b0c
Clojure's defprotocol takes an optional docstring and leading keyword options (:extend-via-metadata true) before the signatures; jolt's macro fed the option keyword to (first sig). honeysql declares its InlineValue protocol exactly that way — with the fix, all four honeysql namespaces load unmodified from git and the formatter produces correct sqlvecs for selects/inserts/updates/deletes/joins/:inline. Listed in libraries.md.
58 lines
2.9 KiB
Text
58 lines
2.9 KiB
Text
# Specification: protocols, types and records.
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(use ../support/harness)
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(defspec "protocols / defprotocol & dispatch"
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["protocol on record" "16"
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"(do (defprotocol Shape (area [s])) (defrecord Sq [side] Shape (area [_] (* side side))) (area (->Sq 4)))"]
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["protocol on deftype" "16"
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"(do (defprotocol Shape (area [s])) (deftype Sq [side] Shape (area [_] (* side side))) (area (->Sq 4)))"]
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["multiple methods" "[1 2]"
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"(do (defprotocol P (m [s]) (n [s])) (defrecord R [a b] P (m [_] a) (n [_] b)) [(m (->R 1 2)) (n (->R 1 2))])"]
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["multiple protocols" "[:a :b]"
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"(do (defprotocol P1 (p1 [s])) (defprotocol P2 (p2 [s])) (deftype T [] P1 (p1 [_] :a) P2 (p2 [_] :b)) [(p1 (->T)) (p2 (->T))])"]
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["method args" "7"
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"(do (defprotocol P (add [s x])) (defrecord R [n] P (add [_ x] (+ n x))) (add (->R 5) 2))"]
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["extend-type" "10"
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"(do (defprotocol P (twice [s])) (extend-type Number P (twice [n] (* n 2))) (twice 5))"]
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["extend-protocol" "[2 4]"
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"(do (defprotocol P (dbl [s])) (extend-protocol P Number (dbl [n] (* n 2))) [(dbl 1) (dbl 2)])"])
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(defspec "protocols / records"
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["record field access" "1"
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"(do (defrecord R [a b]) (:a (->R 1 2)))"]
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["record map access" "2"
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"(do (defrecord R [a b]) (get (->R 1 2) :b))"]
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["record equality" "true"
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"(do (defrecord R [a b]) (= (->R 1 2) (->R 1 2)))"]
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["record inequality" "false"
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"(do (defrecord R [a b]) (= (->R 1 2) (->R 3 4)))"]
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["map-> factory" "1"
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"(do (defrecord R [a b]) (:a (map->R {:a 1 :b 2})))"]
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["record? true" "true"
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"(do (defrecord R [a]) (record? (->R 1)))"]
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["assoc on record" "9"
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"(do (defrecord R [a]) (:a (assoc (->R 1) :a 9)))"])
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(defspec "protocols / reify & satisfies"
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["reify dispatch" "42"
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"(do (defprotocol P (m [_])) (m (reify P (m [_] 42))))"]
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["reify multi-method" "[1 2]"
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"(do (defprotocol P (a [_]) (b [_])) (let [r (reify P (a [_] 1) (b [_] 2))] [(a r) (b r)]))"]
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["satisfies? true" "true"
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"(do (defprotocol P (m [_])) (defrecord R [] P (m [_] 1)) (satisfies? P (->R)))"]
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["satisfies? false" "false"
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"(do (defprotocol P (m [_])) (defrecord R []) (satisfies? P (->R)))"]
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["instance? record" "true"
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"(do (defrecord R [a]) (instance? R (->R 1)))"]
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["dot constructor" "5"
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"(do (deftype P [n]) (.-n (P. 5)))"]
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["dot ctor + method" "5"
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"(do (defprotocol G (val-of [_])) (deftype P [n] G (val-of [_] n)) (val-of (P. 5)))"])
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# defprotocol accepts Clojure's optional docstring + leading keyword options
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# before the signatures (honeysql: :extend-via-metadata true).
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(defspec "protocols / defprotocol options"
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["docstring + option + method" ":hi"
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"(do (defprotocol Pdoc \"docs\" :extend-via-metadata true (greet [x])) (extend-protocol Pdoc String (greet [s] :hi)) (greet \"x\"))"]
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["option only" "3"
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"(do (defprotocol Popt :extend-via-metadata true (plus2 [x])) (extend-protocol Popt Long (plus2 [n] (+ n 2))) (plus2 1))"])
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