diff --git a/test/fixtures/test-types.ts b/test/fixtures/test-types.ts
new file mode 100644
index 0000000..788af6d
--- /dev/null
+++ b/test/fixtures/test-types.ts
@@ -0,0 +1,52 @@
+export interface User {
+  id: number;
+  name: string;
+  email: string;
+  createdAt: Date;
+}
+
+export interface Admin extends User {
+  permissions: string[];
+  role: 'admin' | 'superadmin';
+}
+
+export type UserId = number | string;
+
+export type AdminResponse = {
+  user: Admin;
+  token: string;
+};
+
+export type ApiResponse<T> = {
+  data: T;
+  status: number;
+  message: string;
+};
+
+export interface Session {
+  id: string;
+  userId: UserId;
+  expiresAt: Date;
+}
+
+export enum Status {
+  Pending = 'pending',
+  Active = 'active',
+  Inactive = 'inactive'
+}
+
+export type ComplexType = {
+  nested: {
+    deep: {
+      value: string;
+    };
+  };
+  union: 'a' | 'b' | 'c' | 'd' | 'e' | 'f';
+  intersection: User & { extra: string };
+};
+
+export type ConditionalType<T> = T extends string ? 'string' : T extends number ? 'number' : 'unknown';
+
+export type DeepPartial<T> = {
+  [P in keyof T]?: T[P] extends object ? DeepPartial<T[P]> : T[P];
+};