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Adding find-fn-for-pred #2

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15 changes: 11 additions & 4 deletions src/findfn/core.clj
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Original file line number Diff line number Diff line change
Expand Up @@ -30,15 +30,22 @@
(close [])
(flush [])))

(defn find-fn-for-pred
"Takes a predicate and expected input and runs every single function
and macro against the input, collecting the names of the ones where
(pred result) is true."
[tester pred & in]
(let [sb (sb/sandbox tester :timeout 200)]
(filter-vars
(fn [f]
(pred (sb `(~f ~@in) {#'*out* (null-writer)}))))))

(defn find-fn
"Takes expected output and expected input to produce that output and
runs every single function and macro against the input, collecting the
names of the ones that match the output."
[tester out & in]
(let [sb (sb/sandbox tester :timeout 200)]
(filter-vars
(fn [f]
(= out (sb `(~f ~@in) {#'*out* (null-writer)}))))))
(apply find-fn-for-pred tester #(= % out) in))

(defn find-arg
"Basically find-fn for finding functions to pass to higher order functions. out is
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6 changes: 6 additions & 0 deletions test/findfn/core_test.clj
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Original file line number Diff line number Diff line change
Expand Up @@ -3,6 +3,12 @@
[clojail.testers :only [secure-tester]]
findfn.core))

(deftest find-fn-for-pred-test
(testing "that it works"
(is (= (find-fn-for-pred secure-tester #(= (count %) 6) "lol" "omg")
'[clojure.core/lazy-cat clojure.core/concat
clojure.core/interleave clojure.core/str]))))

(deftest find-fn-test
(testing "that it works."
(is (= (find-fn secure-tester "lolomg" "lol" "omg") '[clojure.core/str]))))
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