(ns test-jar (:use [clojure.test] [leiningen.core :only [defproject]] [leiningen.jar])) (defproject mock-project "1.0" :main foo.one-two.three-four.bar) (deftest test-jar (is (= "foo.one_two.three_four.bar" (.getValue (.getMainAttributes (make-manifest mock-project)) "Main-Class"))))