diff --git a/test/unit/acpAccount.test.ts b/test/unit/acpAccount.test.ts
new file mode 100644
index 0000000..9f04e18
--- /dev/null
+++ b/test/unit/acpAccount.test.ts
@@ -0,0 +1,64 @@
+import { Address } from "viem";
+import { AcpAccount } from "../../src/acpAccount";
+import BaseAcpContractClient from "../../src/contractClients/baseAcpContractClient";
+
+describe("AcpAccount", () => {
+  let mockContractClient: jest.Mocked<BaseAcpContractClient>;
+  let acpAccount: AcpAccount;
+
+  beforeEach(() => {
+    mockContractClient = {
+      updateAccountMetadata: jest
+        .fn()
+        .mockReturnValue({ type: "UPDATE_METADATA" }),
+    } as any;
+
+    acpAccount = new AcpAccount(
+      mockContractClient,
+      123,
+      "0xClient" as Address,
+      "0xProvider" as Address,
+      { status: "active" },
+    );
+  });
+
+  describe("Constructor", () => {
+    it("should initialize with correct properties", () => {
+      expect(acpAccount.id).toBe(123);
+      expect(acpAccount.clientAddress).toBe("0xClient");
+      expect(acpAccount.providerAddress).toBe("0xProvider");
+      expect(acpAccount.metadata).toEqual({ status: "active" });
+      expect(acpAccount.contractClient).toBe(mockContractClient);
+    });
+  });
+
+  describe("updateMetadata", () => {
+    it("should call contractClient.updateAccountMetadata with stringified metadata", async () => {
+      const newMetadata = { status: "completed", amount: 100 };
+      const mockPayload = { type: "UPDATE_METADATA", data: "test" };
+
+      (mockContractClient.updateAccountMetadata as jest.Mock).mockReturnValue(
+        mockPayload,
+      );
+
+      const result = await acpAccount.updateMetadata(newMetadata);
+
+      expect(mockContractClient.updateAccountMetadata).toHaveBeenCalledWith(
+        123,
+        JSON.stringify(newMetadata),
+      );
+      expect(result).toBe(mockPayload);
+    });
+
+    it("should return operation payload from updateAccountMetadata", async () => {
+      const mockPayload = { type: "UPDATE", data: "payload" };
+      (mockContractClient.updateAccountMetadata as jest.Mock).mockReturnValue(
+        mockPayload,
+      );
+
+      const result = await acpAccount.updateMetadata({ updated: true });
+
+      expect(result).toBe(mockPayload);
+    });
+  });
+});