lLt's not use clojure.test. The runner can be much simpler and provide better output. I am putting the zen message as metadata on each function. The 'runner' exits on the first failure now

build.xml

@@ -1,22 +0,0 @@
-<project name="functional-koans" default="test">
-  <description>
-    functional-koans
-  </description>
-  
-  <path id="classpath">
-    <path location="src"/>
-    <fileset dir="lib">
-      <include name="*.jar"/>
-    </fileset>
-  </path>
-  
-  <target name="test" description="Run tests">
-    <java fork="true" classname="clojure.main" failonerror="true">
-      <classpath>
-        <path refid="classpath"/>
-        <path location="koans"/>
-      </classpath>
-      <arg value="koans/path_to_enlightenment.clj"/>
-    </java>
-  </target>
-</project>

koans/about-asserts.clj

@@ -0,0 +1,11 @@
+(defn test-truth
+  #^{:zen "We shall contemplate truth by testing reality, via asserts."}
+  []
+  (assert false)) ;; This should be true
+
+(defn test-assert-equality
+  #^{:zen "To understand reality, we must compare our expectations against reality."}
+  []
+  (let [expected-value 0
+        actual-value (+ 1 1)]
+    (assert (= expected-value actual-value))))

koans/about_asserts_test.clj

@@ -1,12 +0,0 @@
-(ns about-asserts-test
-  (:use clojure.test))
-
-(deftest test-truth
-  (testing "We shall contemplate truth by testing reality, via asserts."
-    (assert false))) ;; This should be true
-
-(deftest test-assert-equality
-  (testing "To understand reality, we must compare our expectations against reality."
-    (let [expected-value 0
-          actual-value (+ 1 1)]
-      (is (= expected-value actual-value)))))

koans/path_to_enlightenment.clj

@@ -1,20 +1,14 @@
-(use 'clojure.contrib.find-namespaces
-     'clojure.test)
+(load "about-asserts")
 
-(def exit-code (atom 0))
+(defn meditate-on
+  "Runs tests but exits if an assertion fails"
+  [test]
+  (try
+   (test)
+   (catch Throwable t
+     (println (str "Metadata zen\n" "test name failed"))
+     (System/exit 1))))
 
-(defn find-tests []
-  (filter
-   #(re-find #"-test" (str %)) (find-namespaces-in-dir (java.io.File. "."))))
-
-(defn require-tests []
-  
-  (doseq [test (find-tests)]
-    (require test)))
-
-(require-tests)
-(let [results (apply merge-with + (map test-ns (find-tests)))]
-  (if (or (> (results :fail) 0)
-          (> (results :error) 0))
-    (System/exit -1)
-    (System/exit 0)))
+(meditate-on test-truth)
+(meditate-on test-assert-equality)
+(println "You have achieved clojure zen. Go out into the universe and spread your newfound knowledge.")

path_to_enlightenment

@@ -0,0 +1,9 @@
+#!/bin/sh
+
+CLASSPATH=koans
+
+for f in lib/*.jar; do
+  CLASSPATH=$CLASSPATH:$f
+done
+
+java -cp $CLASSPATH clojure.main -i koans/path_to_enlightenment.clj