diff --git a/test/check/parts_test.clj b/test/check/parts_test.clj
new file mode 100644
index 0000000..c2f1d1a
--- /dev/null
+++ b/test/check/parts_test.clj
@@ -0,0 +1,17 @@
+(ns check.parts-test
+  (:require [mount :refer [defstate] :as m]
+            [app.nyse :refer [conn]]
+            [clojure.test :refer :all]))
+
+(defstate should-not-start :start (throw (RuntimeException. "should not have been started!")))
+
+(defn with-parts [f]
+  (m/start #'app.config/app-config #'app.nyse/conn)
+  (f)
+  (m/stop #'app.config/app-config #'app.nyse/conn))
+
+(use-fixtures :each with-parts)
+
+(deftest start-only-parts 
+  (is (instance? datomic.peer.LocalConnection conn))
+  (is (instance? mount.NotStartedState should-not-start)))