(ns my-test-ns
  (:require [clojure.test :refer :all]
            [fhofherr.stub-fn.clojure.test :refer [stub-fn]]))

(deftest some-test
  (let [stubbed-fn (stub-fn stubbed-fn [])]
    (stubbed-fn)
    (is (invoked? stubbed-fn :times 1))))

Integration of `fhofherr/stub-fn` into `clojure.test`.

Re-exports the [[core/stub-fn]] macro.

It extends `clojure.test/assert-expr` to provide the `invoked?` assertion.
The `invoked?` assertions accepts the same arguments as
[[core/verify-invocations]].

In order to use `fhofherr/stub-fn` together with `clojure.test` something
like the following is enough:

```clojure
(ns my-test-ns
  (:require [clojure.test :refer :all]
            [fhofherr.stub-fn.clojure.test :refer [stub-fn]]))

(deftest some-test
  (let [stubbed-fn (stub-fn stubbed-fn [])]
    (stubbed-fn)
    (is (invoked? stubbed-fn :times 1))))
```

Implements the core functionality of `fhofherr/stub-fn`.

Users of `clojure.test` should not use this namespace directly. Instead
they should use [[fhofherr.stub-fn.clojure.test]].

The core functionality is implemented by the [[stub-fn]] macro. It creates
an anonymous function which can be used in place of any other function. The
stubbed function tracks information about its invocations under the
`::stub-info` key in its meta data.