diff --git a/AlgebraicDataflowArchitectureModel/models/Test.model b/AlgebraicDataflowArchitectureModel/models/Test.model
new file mode 100644
index 0000000..e5f79c4
--- /dev/null
+++ b/AlgebraicDataflowArchitectureModel/models/Test.model
@@ -0,0 +1,9 @@
+channel AddUser {
+  out users(userMap: Map, addUser(userId: Str, name: Str)) = insert(userMap, userId, {"name": name})
+}
+
+channel PostFriendRequest {
+  ref users(usersMap: Map, postFriendRequest(senderId: Str, receiverId: Str))
+  out friendRequests(friendRequestList: List, postFriendRequest(senderId: Str, receiverId: Str)) =
+      if(senderId != null && receiverId != null, append(friendRequestList, {"senderId": senderId, "receiverId": receiverId}), friendRequestList)
+}
\ No newline at end of file