diff --git a/main/src/data_test.clj b/main/src/data_test.clj
index 232b0df..8d8a884 100644
--- a/main/src/data_test.clj
+++ b/main/src/data_test.clj
@@ -17,15 +17,11 @@
   (:require
    [clojure.test :as ct]
    [schema.core :as s]
-   [data-test.runner :as runner]
+   [data-test.reporter :as reporter]
    [data-test.file-loader :as fl]))
 
 (def TestDataSpec fl/TestDataSpec)
 
-(s/defn test-with-data 
-  [test-name :- s/Keyword]
-  (runner/run-tests (runner/create-test-runner test-name)))
-
 (defmacro defdatatest [n bindings & body]
   (when ct/*load-tests*
     (let [namespaced-test-key# (keyword (str *ns*) (name n))]
@@ -34,9 +30,13 @@
                                  (doseq [data-spec# (fl/load-data-test-specs ~namespaced-test-key#)]
                                   (let [~(symbol (first bindings)) (:input data-spec#)
                                         ~(symbol (second bindings)) (:expectation data-spec#)
-                                        data-spec-file# (:data-spec-file data-spec#)]
+                                        data-spec-file# (:data-spec-file data-spec#)
+                                        message# (new java.io.StringWriter)]
                                     (binding [ct/*testing-contexts*
-                                              (conj ct/*testing-contexts* data-spec-file#)]
-                                      ~@body))))
+                                              (conj ct/*testing-contexts* data-spec-file#)
+                                              ct/*test-out* message#]
+                                      ~@body)
+                                    (reporter/write data-spec-file# data-spec# message#)
+                                    )))
                         :data-spec-key namespaced-test-key#)
            (fn [] (ct/test-var (var ~n)))))))
diff --git a/test/src/data_test/runner_test.clj b/main/src/data_test/reporter.clj
similarity index 67%
rename from test/src/data_test/runner_test.clj
rename to main/src/data_test/reporter.clj
index 916470f..b076fcd 100644
--- a/test/src/data_test/runner_test.clj
+++ b/main/src/data_test/reporter.clj
@@ -13,16 +13,19 @@
 ; WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 ; See the License for the specific language governing permissions and
 ; limitations under the License.
-(ns data-test.runner-test
+(ns data-test.reporter
   (:require
-   [clojure.test :refer :all]
+   [clojure.java.io :as io]
+   [clojure.string :as str]
    [schema.core :as s]
-   [data-test.runner :as sut]))
+   [aero.core :as aero]))
 
-(s/defmethod sut/data-test ::test-it
-  [_ input :- s/Any expectation :- s/Any]
-  "my-result")
-
-(deftest should-reslove-multimethod
-  (is (= "my-result"
-         (sut/data-test (sut/create-test-runner ::test-it) nil nil))))
+(s/defn write
+  [data-spec-file :- s/Str
+   data-spec
+   message]
+  (let [output-file (str "target/datatest/" data-spec-file)]
+    (clojure.java.io/make-parents output-file)
+    (spit output-file (merge
+                        {:message (str message)}
+                        data-spec))))
\ No newline at end of file
diff --git a/main/src/data_test/runner.clj b/main/src/data_test/runner.clj
deleted file mode 100644
index 9237c2b..0000000
--- a/main/src/data_test/runner.clj
+++ /dev/null
@@ -1,59 +0,0 @@
-; Licensed to the Apache Software Foundation (ASF) under one
-; or more contributor license agreements. See the NOTICE file
-; distributed with this work for additional information
-; regarding copyright ownership. The ASF licenses this file
-; to you under the Apache License, Version 2.0 (the
-; "License"); you may not use this file except in compliance
-; with the License. You may obtain a copy of the License at
-;
-; http://www.apache.org/licenses/LICENSE-2.0
-;
-; Unless required by applicable law or agreed to in writing, software
-; distributed under the License is distributed on an "AS IS" BASIS,
-; WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-; See the License for the specific language governing permissions and
-; limitations under the License.
-(ns data-test.runner
-  (:require
-   [schema.core :as s]
-   [data-test.file-loader :as fl]))
-
-(def TestResult
-  {:input s/Any
-   :expectation s/Any
-   :output s/Any
-   :passed? s/Bool
-   :error s/Any})
-
-(s/defrecord TestRunner [name :- s/Keyword]
-  Object
-  (toString [_] (str "TestRunner: " (:name _) "]")))
-
-(defprotocol RunTest
-  "Protocol for data driven tests"
-  (name-prefix [dda-test])
-  (run-tests [dda-test]))
-
-(s/defn dispatch-by-name :- s/Keyword
-  "Dispatcher for data-tests."
-  [runner :- TestRunner
-   input :- s/Any
-   expectation :- s/Any]
-  (:name runner))
-
-(defmulti data-test
-  "Multimethod for data-test."
-  dispatch-by-name)
-
-(extend-type TestRunner
-  RunTest
-  (name-prefix [_]
-    (fl/data-test-spec-file-prefix (:name _)))
-  (run-tests [_]
-    (let [testdata (fl/load-data-test-spec (fl/data-test-spec-file-prefix (:name _)))
-          {:keys [input expectation]} testdata]
-      (data-test _ input expectation))))
-
-(defn create-test-runner 
-  [test-name]
-  (->TestRunner test-name))