A very simple inline testing library.

(require '[clj-arsenal.check :refer [check when-check samp samps expect]])

(check ::my-bad-check
 (expect = 1 2))

(check ::my-good-check
 (let [i (samp :integer)]
   (expect = i i)))

(when-check
 (defn foo [x y] (+ x y)))

(check ::another-check
 (expect = (foo 1 2) (foo 2 1)))

• Checks are run immediately if enabled, otherwise they expand nil
• Enable checks by setting :clj-arsenal.check/enabled to true in your deps alias
• Include/exclude specific namespaces by setting :clj-arsenal.check/ns-include-re and/or :clj-arsenal.check/ns-exclude-re regexes in your deps alias.
• If a top-level form within a check evaluates to a chainable (i.e an async value, including js promises), then the check will wait for it to resolve.
• The reporter determines what happens with check results, the default one prints the check report to the console in a very basic way. It can be customized by setting :clj-arsenal.check/reporter to the qualified symbol of a custom reporter function.
• Generators produce test values, accessible via samp (one value) or samps (multiple values). Only :integer and :string generators are currently built-in. Add more by adding clj-arsenal/check/generators.edn files to the classpath; which contain maps of key -> qualified-generator-function-symnol. Generator functions are called from Clojure (i.e the macro, not at runtime).
• Status of all checks is assoced into a map within the clj-arsenal.check/!status atom. For CI tests, add-watch this atom to figure out when all checks have passed, or if any have failed. The values of this map will be one of clj-arsenal.check/failure, clj-arsenal.check/success, or clj-arsenal.check/pending.

Currently this library works for Clojure and ClojureScript. It can also be used within mixed ClojureDart projects, but the checks will always expand to nil. A different approach needs to be used with ClojureDart, due to to the semantics of Dart itself; but there are plans to try and make something work.