diff --git a/src/tests.ts b/src/tests.ts
index f8434d6..d63a63c 100644
--- a/src/tests.ts
+++ b/src/tests.ts
@@ -1,15 +1,17 @@
 import { Implements } from "@thilawyn/traitify-ts"
+import { Option } from "effect"
 import { z } from "zod"
 import { JsonifiedZodSchemaClass } from "./JsonifiedZodSchemaClass"
 import { ZodSchemaClass } from "./ZodSchemaClass"
 import { dejsonify, jsonify } from "./schema/jsonifiable"
+import { effect } from "./schema/lib"
 import { MobXObservableZodSchemaObject } from "./traits/MobXObservableZodSchemaObject"
 
 
 const userExp = ZodSchemaClass(
     z.object({
         /** User ID */
-        id: z.bigint().default(-1n),
+        id: effect.option.option(z.bigint()).default(Option.none()),
 
         /** Username */
         name: z.string(),
@@ -24,8 +26,8 @@ const userExp = ZodSchemaClass(
 @userExp.staticImplements
 class User extends userExp.extends implements Implements<typeof userExp> {}
 
-const userInst = User.create({ id: 1n, name: "User" })
-const userInstEffect = User.createEffect({ id: 1n, name: "User" })
+const userInst = User.create({ id: Option.some(1n), name: "User" })
+const userInstEffect = User.createEffect({ id: Option.some(1n), name: "User" })
 
 
 const jsonifiedUserExp = JsonifiedZodSchemaClass(User, {
@@ -52,4 +54,4 @@ const adminUserExp = User.extend(s => s.extend({
 @adminUserExp.staticImplements
 class AdminUser extends adminUserExp.extends implements Implements<typeof adminUserExp> {}
 
-const admin = AdminUser.create({ id: 2n, name: "Admin" })
+const admin = AdminUser.create({ id: Option.some(2n), name: "Admin" })