diff --git a/src/TuitioProvider.tsx b/src/TuitioProvider.tsx
index 4a36c02..5959ff8 100644
--- a/src/TuitioProvider.tsx
+++ b/src/TuitioProvider.tsx
@@ -1,3 +1,5 @@
+// Copyright (c) 2023 Tudor Stanciu
+
 import React, { useReducer, useMemo, ReactNode } from "react";
 import { TuitioContext, TuitioDispatchContext } from "./contexts";
 import { initialState } from "./initialState";
diff --git a/src/contexts.ts b/src/contexts.ts
index 6ffe48a..3f30c48 100644
--- a/src/contexts.ts
+++ b/src/contexts.ts
@@ -1,3 +1,5 @@
+// Copyright (c) 2023 Tudor Stanciu
+
 import React from "react";
 import { initialState, initialDispatchActions } from "./initialState";
 
diff --git a/src/hooks/index.ts b/src/hooks/index.ts
index 19c35b9..dea7e96 100644
--- a/src/hooks/index.ts
+++ b/src/hooks/index.ts
@@ -1,3 +1,5 @@
+// Copyright (c) 2023 Tudor Stanciu
+
 export * from "./useTuitioClient";
 export * from "./useTuitioToken";
 export * from "./useTuitioUser";
diff --git a/src/hooks/useTuitioClient.ts b/src/hooks/useTuitioClient.ts
index b50f81c..8d6908f 100644
--- a/src/hooks/useTuitioClient.ts
+++ b/src/hooks/useTuitioClient.ts
@@ -1,3 +1,5 @@
+// Copyright (c) 2023 Tudor Stanciu
+
 import { useContext } from "react";
 import { TuitioContext, TuitioDispatchContext } from "../contexts";
 import { TuitioClient } from "@flare/tuitio-client";
diff --git a/src/hooks/useTuitioToken.ts b/src/hooks/useTuitioToken.ts
index 2bb25e5..ec7f2af 100644
--- a/src/hooks/useTuitioToken.ts
+++ b/src/hooks/useTuitioToken.ts
@@ -1,3 +1,5 @@
+// Copyright (c) 2023 Tudor Stanciu
+
 import { useContext } from "react";
 import { TuitioContext } from "../contexts";
 
diff --git a/src/hooks/useTuitioUser.ts b/src/hooks/useTuitioUser.ts
index dcd97e4..2f3b18b 100644
--- a/src/hooks/useTuitioUser.ts
+++ b/src/hooks/useTuitioUser.ts
@@ -1,3 +1,5 @@
+// Copyright (c) 2023 Tudor Stanciu
+
 import { useContext } from "react";
 import { TuitioContext } from "../contexts";
 
diff --git a/src/index.ts b/src/index.ts
index 1e58f45..30c727c 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -1,3 +1,5 @@
+// Copyright (c) 2023 Tudor Stanciu
+
 import TuitioProvider from "./TuitioProvider";
 
 export * from "./hooks";
diff --git a/src/initialState.ts b/src/initialState.ts
index f133749..8686fee 100644
--- a/src/initialState.ts
+++ b/src/initialState.ts
@@ -1,3 +1,5 @@
+// Copyright (c) 2023 Tudor Stanciu
+
 import { fetch } from "@flare/tuitio-client";
 import type { TuitioReactState, TuitioDispatchActions } from "./types";
 
diff --git a/src/reducer.ts b/src/reducer.ts
index 344d794..173c168 100644
--- a/src/reducer.ts
+++ b/src/reducer.ts
@@ -1,3 +1,5 @@
+// Copyright (c) 2023 Tudor Stanciu
+
 import { initialState } from "./initialState";
 import type { TuitioReactState, TuitioDispatchActions } from "./types";
 import { Dispatch } from "react";
diff --git a/src/types.ts b/src/types.ts
index dac2b18..5906222 100644
--- a/src/types.ts
+++ b/src/types.ts
@@ -1,3 +1,5 @@
+// Copyright (c) 2023 Tudor Stanciu
+
 export type TuitioConfiguration = { tuitioUrl: string | null };
 export type TuitioReactState = {
   auth: {
diff --git a/tests/TuitioProvider.test.tsx b/tests/TuitioProvider.test.tsx
index cfa4e12..0dd2cb5 100644
--- a/tests/TuitioProvider.test.tsx
+++ b/tests/TuitioProvider.test.tsx
@@ -1,3 +1,5 @@
+// Copyright (c) 2023 Tudor Stanciu
+
 import * as React from "react";
 import { render } from "@testing-library/react";
 import "jest-canvas-mock";
diff --git a/tests/hooks/useTuitioClient.test.ts b/tests/hooks/useTuitioClient.test.ts
index 2973856..05a870d 100644
--- a/tests/hooks/useTuitioClient.test.ts
+++ b/tests/hooks/useTuitioClient.test.ts
@@ -1,3 +1,5 @@
+// Copyright (c) 2023 Tudor Stanciu
+
 import { renderHook, act } from "@testing-library/react-hooks";
 import { TuitioClient } from "@flare/tuitio-client";
 import { useTuitioClient } from "../../src/hooks";
diff --git a/tests/hooks/useTuitioClient.test.tsx b/tests/hooks/useTuitioClient.test.tsx
index 871a3c9..bd7d398 100644
--- a/tests/hooks/useTuitioClient.test.tsx
+++ b/tests/hooks/useTuitioClient.test.tsx
@@ -1,3 +1,5 @@
+// Copyright (c) 2023 Tudor Stanciu
+
 import React from "react";
 import { renderHook } from "@testing-library/react-hooks";
 import { TuitioContext, TuitioDispatchContext } from "../../src/contexts";
@@ -62,14 +64,14 @@ describe("useTuitioClient: dispatchActions", () => {
     </TuitioContext.Provider>
   );
 
-  const optionMock = {
+  const optionsMock = {
     onLoginSuccess: jest.fn(),
     onLoginFailed: jest.fn(),
     onLoginError: jest.fn()
   };
 
   it("onLoginSuccess should be called when user logs in", async () => {
-    const { result } = renderHook(() => useTuitioClient(optionMock), { wrapper });
+    const { result } = renderHook(() => useTuitioClient(optionsMock), { wrapper });
 
     const userName = "user";
     const password = "password";
@@ -79,7 +81,7 @@ describe("useTuitioClient: dispatchActions", () => {
   });
 
   it("onLogoutSuccess should be called when user logs out", async () => {
-    const { result } = renderHook(() => useTuitioClient(optionMock), { wrapper });
+    const { result } = renderHook(() => useTuitioClient(optionsMock), { wrapper });
     await result.current.logout();
     expect(spyOnLogoutSuccess).toHaveBeenCalled();
   });
diff --git a/tests/hooks/useTuitioClientAxiosMock.test.tsx b/tests/hooks/useTuitioClientAxiosMock.test.tsx
new file mode 100644
index 0000000..011e09b
--- /dev/null
+++ b/tests/hooks/useTuitioClientAxiosMock.test.tsx
@@ -0,0 +1,62 @@
+// Copyright (c) 2023 Tudor Stanciu
+
+import React from "react";
+import { renderHook } from "@testing-library/react-hooks";
+import { TuitioContext, TuitioDispatchContext } from "../../src/contexts";
+import { useTuitioClient } from "../../src/hooks";
+import axios from "axios";
+
+jest.mock("axios");
+
+describe("useTuitioClient: dispatchActions", () => {
+  let spyOnLoginSuccess: (token: string, validUntil: Date, userName: string) => void;
+  let spyOnLogoutSuccess: () => void;
+
+  beforeEach(() => {
+    spyOnLoginSuccess = jest.fn();
+    spyOnLogoutSuccess = jest.fn();
+  });
+
+  afterEach(() => {
+    (spyOnLoginSuccess as jest.Mock).mockReset();
+    (spyOnLogoutSuccess as jest.Mock).mockReset();
+  });
+
+  const tuitioContextState = {
+    auth: {
+      userName: null,
+      token: null,
+      validUntil: null
+    },
+    configuration: { tuitioUrl: "http://localhost:5063/" }
+  };
+
+  const wrapper = ({ children }: { children: React.ReactNode }) => (
+    <TuitioContext.Provider value={tuitioContextState}>
+      <TuitioDispatchContext.Provider
+        value={{ onLoginSuccess: spyOnLoginSuccess, onLogoutSuccess: spyOnLogoutSuccess }}
+      >
+        {children}
+      </TuitioDispatchContext.Provider>
+    </TuitioContext.Provider>
+  );
+
+  const optionsMock = {
+    onLogoutFailed: jest.fn()
+  };
+
+  it("onLogoutFailed should be called if logout is called before login", async () => {
+    (axios.request as jest.Mock).mockResolvedValue({
+      data: {
+        result: { userId: 0, userName: "tuitio.user", logoutDate: new Date() },
+        error: null
+      }
+    });
+
+    const { result } = renderHook(() => useTuitioClient(optionsMock), { wrapper });
+    const response = await result.current.logout();
+    expect(response.result).toBeNull();
+    expect(response.error).toBe("UNAUTHENTICATED");
+    expect(optionsMock.onLogoutFailed).toHaveBeenCalledWith("UNAUTHENTICATED");
+  });
+});
diff --git a/tests/hooks/useTuitioToken.test.tsx b/tests/hooks/useTuitioToken.test.tsx
index 58ae9a5..2bfd139 100644
--- a/tests/hooks/useTuitioToken.test.tsx
+++ b/tests/hooks/useTuitioToken.test.tsx
@@ -1,3 +1,5 @@
+// Copyright (c) 2023 Tudor Stanciu
+
 import React from "react";
 import { renderHook } from "@testing-library/react-hooks";
 import { TuitioContext } from "../../src/contexts";
diff --git a/tests/hooks/useTuitioUser.test.tsx b/tests/hooks/useTuitioUser.test.tsx
index fac03d2..12b0f3f 100644
--- a/tests/hooks/useTuitioUser.test.tsx
+++ b/tests/hooks/useTuitioUser.test.tsx
@@ -1,3 +1,5 @@
+// Copyright (c) 2023 Tudor Stanciu
+
 import React from "react";
 import { renderHook } from "@testing-library/react-hooks";
 import { TuitioContext } from "../../src/contexts";
diff --git a/tests/initialState.test.ts b/tests/initialState.test.ts
index 9605ef3..c4b3573 100644
--- a/tests/initialState.test.ts
+++ b/tests/initialState.test.ts
@@ -1,3 +1,5 @@
+// Copyright (c) 2023 Tudor Stanciu
+
 import { initialDispatchActions } from "../src/initialState";
 
 describe("Initial dispatch actions", () => {
diff --git a/tests/reducer.test.ts b/tests/reducer.test.ts
index f139cac..51cd142 100644
--- a/tests/reducer.test.ts
+++ b/tests/reducer.test.ts
@@ -1,3 +1,5 @@
+// Copyright (c) 2023 Tudor Stanciu
+
 import { reducer, dispatchActions } from "../src/reducer";
 import { TuitioReactState, TuitioDispatchActions } from "../src/types";
 import { initialState } from "../src/initialState";