Spec tool. A tool for leveraging registered functions specs.

[jpmonettas]

It could be interesting to create a tool that can walk a selected thread timeline and for each FnCall look up the fn-spec registry, and if any, apply it's :args, :fn and :ret spec to the FnCall args and ret, collecting and listing all failures, and allowing the user to quickly jump to failed spots like we do on the Printer.

This should be pretty straight forward to implement. Fn specs can be retrieved with :

(require '[clojure.spec.alpha :as s])

(s/fdef sum
  :args (s/cat :a int? :b int? )
  :ret int?)

(defn sum [a b]
  (+ a b))

(def sum-spec (s/get-spec 'user/sum))

(:args sum-spec)
(:ret sum-spec)

If malli is on the classpath we can also do the same with :

(require '[malli.core :as m])

(m/=> sum [:=> [:cat :int] :int])

;; this can retrieve the schema given the fn ns and name
(get-in (m/function-schemas) '[user sum :schema])