diff --git a/tests/test_lib_responses.py b/tests/test_lib_responses.py
new file mode 100644
index 0000000..c63fea8
--- /dev/null
+++ b/tests/test_lib_responses.py
@@ -0,0 +1,21 @@
+import json
+import decimal
+
+from halfapi.lib.responses import ORJSONResponse
+
+
+def test_orjson():
+    test_obj = {
+        "ok": "ko",
+        "dec": decimal.Decimal(42),
+        "set": set([0,4,2])
+    }
+
+    resp = ORJSONResponse(test_obj)
+    body = resp.body.decode()
+    test_obj_dec = json.loads(body)
+    print(test_obj_dec)
+    assert 'ok' in test_obj_dec.keys()
+    assert isinstance(test_obj_dec['ok'], str)
+    assert isinstance(test_obj_dec['dec'], str)
+    assert isinstance(test_obj_dec['set'], liststr)