/fdef-:fn.clj Secret
Created
February 12, 2020 23:18
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(require '[clojure.spec.alpha :as s] | |
'[clojure.spec.test.alpha :as s-test]) | |
(s/fdef inner | |
:args (s/cat :i int?) | |
:ret int?) | |
(defn inner [i] i) | |
(s/def ::result-1 int?) | |
(s/def ::result-2 int?) | |
(s/fdef outer | |
:args (s/cat :i int?) | |
:ret (s/keys :req [::result-1 | |
::result-2]) | |
;; This fn will fail because the values generated by the calls to | |
;; inner will differ. | |
:fn #(= (-> % :ret ::result-1) | |
(-> % :ret ::result-2))) | |
(defn outer [i] | |
(let [result-1 (inner i) | |
result-2 (inner i)] | |
{::result-1 result-1 | |
::result-2 result-2})) | |
(s-test/instrument `inner {:stub #{`inner}}) | |
(s-test/check `outer) |
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Update: @colinkahn on Clojurians slack recommended using :replace instead of :stub.