mockfn is a library supporting mockist test-driven-development in Clojure. It is meant to be used alongside a regular testing framework such as clojure.test.
It provides two macros to be used in tests. The first, providing, replaces a function with a configured mock.
(testing "providing"
(providing [(one-fn) :result]
(is (= :result (one-fn)))))The second macro, verifying, works similarly, but also defines an expectation for the number of times a call should be performed during the test.
(testing "verifying"
(verifying [(one-fn :argument) :result (exactly 1)]
(is (= :result (one-fn :argument)))))Argument matchers are also supported:
(testing "argument matchers"
(providing [(one-fn (at-least 10) (at-most 20)) 15]
(is (= 15 (one-fn 12 18))))))