diff --git a/test/zen/schema_test.clj b/test/zen/schema_test.clj
new file mode 100644
index 0000000..b736e8d
--- /dev/null
+++ b/test/zen/schema_test.clj
@@ -0,0 +1,73 @@
+(ns zen.schema-test
+  (:require [zen.schema :as sut]
+            [clojure.test :as t]
+            [clojure.string :as str]
+            [zen.core]))
+
+
+(t/deftest custom-interpreter-test
+  (t/testing "typescript type generation"
+    (def ztx (zen.core/new-context {}))
+
+    (def my-structs-ns
+      '{:ns my-sturcts
+
+        User
+        {:zen/tags #{zen/schema}
+         :type zen/map
+         :keys {:id {:type zen/string}
+                :email {:type zen/string
+                        #_#_:regex "@"}}}})
+
+    (zen.core/load-ns ztx my-structs-ns)
+
+    (def ts-typedef-assert
+      (str "type User = {"
+           "id: string;"
+           "email: string;"
+           "}"))
+
+    (sut/register-compile-key-interpreter!
+      [:keys ::ts]
+      (fn [_ ztx ks]
+        (fn [vtx data opts]
+          (if-let [s (or (when-let [nm (:zen/name data)]
+                           (str "type " (name nm) " = {"))
+                         (when-let [tp (:type data)]
+                           (str (name (last (:path vtx))) ": "
+                                (get {'zen/string "string"}
+                                     tp)
+                                ";")))]
+            (update vtx ::ts conj s)
+            vtx))))
+
+    (sut/register-compile-key-interpreter!
+      [:type ::ts]
+      (fn [_ ztx ks]
+        (fn [vtx data opts]
+          (-> vtx
+              #_(update ::ts conj [:type (:schema vtx) (:path vtx) data])))))
+
+    (sut/register-schema-pre-process-hook!
+      ::ts
+      (fn [ztx schema]
+        (fn [vtx data opts]
+          (-> vtx
+              #_(update ::ts conj [:pre (:schema vtx) (:path vtx) data])))))
+
+    (sut/register-schema-post-process-hook!
+      ::ts
+      (fn [ztx schema]
+        (fn [vtx data opts]
+          (if-let [nm (:zen/name data)]
+            (update vtx ::ts conj "}")
+            vtx))))
+
+    (def r
+      (sut/apply-schema ztx
+                        {::ts []}
+                        (zen.core/get-symbol ztx 'zen/schema)
+                        (zen.core/get-symbol ztx 'my-sturcts/User)
+                        {:interpreters [#_:zen.v2-validation/validate ::ts]}))
+
+    (t/is (= ts-typedef-assert (str/join "" (distinct (::ts r)))))))