diff --git a/src/effect/tests.ts b/src/effect/tests.ts
new file mode 100644
index 0000000..2c653c9
--- /dev/null
+++ b/src/effect/tests.ts
@@ -0,0 +1,30 @@
+import { Schema as S } from "@effect/schema"
+import { Implements } from "../TraitExpression"
+import { expression } from "../TraitExpressionBuilder"
+import { extendsEffectSchemaExpression } from "../effect"
+
+
+const UserSchema = S.Class<unknown>("User")({
+    id: S.BigIntFromSelf
+})
+
+const userExp = expression
+    .extends(UserSchema)
+    .build()
+
+@userExp.staticImplements
+class User extends extendsEffectSchemaExpression(userExp)<User>() implements Implements<typeof userExp> {
+    static aStaticMethodThatShouldBeInherited() {}
+}
+
+
+const AdminSchema = User.extend<unknown>("Admin")({
+})
+
+const adminExp = expression
+    .extends(AdminSchema)
+    .build()
+
+@adminExp.staticImplements
+class Admin extends extendsEffectSchemaExpression(adminExp)<Admin>() implements Implements<typeof adminExp> {
+}