Last active
August 8, 2020 15:57
-
-
Save lcs-felix/d70074e1aa31e8652cc5d0ab41eff502 to your computer and use it in GitHub Desktop.
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| (defn abs [x] | |
| (if (> x 0) x (* -1 x))) | |
| (defn gcd | |
| [a b] | |
| (if (= b 0) | |
| (abs a) | |
| (recur b (mod a b)))) | |
| (s/def ::gcd-args (s/cat :a int? :b int?)) | |
| (s/fdef gcd | |
| :args ::gcd-args | |
| :ret nat-int? | |
| :fn (s/or | |
| :zero #(and (zero? (-> % :args :a)) (zero? (:ret %))) | |
| :greater-than-zero #(and (= (mod (-> % :args :a) (:ret %)) 0) | |
| (= (mod (-> % :args :b) (:ret %)) 0)))) | |
| (s/exercise-fn `gcd) | |
| (->> (test/check `gcd) test/summarize-results) |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| (ns clojure-tests.spec-demo | |
| (require '[clojure.spec.alpha :as s] | |
| '[clojure.spec.test.alpha :as test] | |
| '[clojure.string :as str])) | |
| (defn my-index-of | |
| [source search] | |
| (str/index-of source search)) | |
| (s/def ::index-of-args (s/cat :source string? :search string?)) | |
| (s/fdef my-index-of | |
| :args ::index-of-args | |
| :ret (s/nilable nat-int?) | |
| :fn (s/or | |
| :not-found #(nil? (:ret %)) | |
| :found (s/and | |
| #(str/includes? (-> % :args :source) (-> % :args :search)) | |
| #(<= (:ret %) (-> % :args :source count))))) | |
| (s/exercise-fn `my-index-of 15) | |
| ;; ([("" "") 0] | |
| ;; [("" "") 0] | |
| ;; [("S" "") 0] | |
| ;; [("sca" "") 0] | |
| ;; [("XAy" "KyO") nil] | |
| ;; [("07d" "9prw") nil] | |
| ;; [("9P6L6" "6Rm") nil] | |
| ;; [("s" "") 0] | |
| ;; [("rr7mx" "xFJV7n") nil] | |
| ;; [("HvFt17FBM" "LF1sc") nil] | |
| ;; [("MQ7fr2" "") 0] | |
| ;; [("5" "4") nil] | |
| ;; [("" "hYTPhXvwdg1k") nil] | |
| ;; [("rK6gOz1je" "RfQQ0c") nil] | |
| ;; [("ikVkh8m0" "4aOy86yX") nil]) | |
| (->> (test/check `my-index-of) test/summarize-results) | |
| ;; {:sym clojure-tests.spec-demo/my-index-of} | |
| ;; => {:total 1, :check-passed 1} |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment