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ghostwheel
Hassle-free clojure.spec, automatic generative testing, side effect detection, and evaluation tracing for Clojure(-Script) – https://github.com/gnl/ghostwheel
Sen 2018-09-01T02:59:07.000100Z
Can I use clojure.spec.gen.alpha 's together with Ghostwheel? In my particular case I cannot figure out how to create a spec that would generate tests for only two possible strings, for example something like this:
(>defn my-fun
[either-one]
[(gen/elements ["good" "bad"])
=> string?]
(str "this is " either-one "code"))
Sen 2018-09-01T03:04:05.000100Z
I tried many approaches, including | (s/or #(= % "good") #(= % "bad")), (s/alt :g "good" :b "bad"), nothing worked, generator cannot generate tests with such specs
Sen 2018-09-01T03:04:58.000100Z
Though this works with clojure.spec.gen, at least in repl
gnl 2018-09-01T10:42:52.000100Z
@armikhalev This doesn't work, you're passing a generator where you need a spec. You want to define the generator with the spec:
(s/def ::some-spec (s/with-gen <spec> <generator-fn>)(>defn my-fun
[either-one]
[::some-spec => string?]
...)
(>defn my-fun
[either-one]
[#{"good" "bad"} => string?]
...)
gnl 2018-09-01T11:07:18.000100Z
P.S. If you want to see what Ghostwheel does exactly in a particular situation and how it desugars to standard spec, you can just do (macroexpand-1 '(>defn ....)) in the REPL.
Sen 2018-09-02T00:12:40.000100Z
Thank you, #{"good" "bad"} was exactly what I needed! Didn't realize that I can use this as a spec, I'm still too new to Clojure and Spec.