diff --git a/apps/website/components/header-auth/header-auth.module.scss b/apps/website/components/header-auth/header-auth.module.scss
deleted file mode 100644
index 45c2aa4..0000000
--- a/apps/website/components/header-auth/header-auth.module.scss
+++ /dev/null
@@ -1,7 +0,0 @@
-/*
- * Replace this with your own classes
- *
- * e.g.
- * .container {
- * }
-*/
diff --git a/apps/website/components/header-auth/header-auth.spec.tsx b/apps/website/components/header-auth/header-auth.spec.tsx
deleted file mode 100644
index 342329e..0000000
--- a/apps/website/components/header-auth/header-auth.spec.tsx
+++ /dev/null
@@ -1,10 +0,0 @@
-import { render } from '@testing-library/react';
-
-import HeaderAuth from './header-auth';
-
-describe('HeaderAuth', () => {
-  it('should render successfully', () => {
-    const { baseElement } = render(<HeaderAuth />);
-    expect(baseElement).toBeTruthy();
-  });
-});
diff --git a/apps/website/components/header-auth/header-auth.tsx b/apps/website/components/header-auth/header-auth.tsx
deleted file mode 100644
index b2eb853..0000000
--- a/apps/website/components/header-auth/header-auth.tsx
+++ /dev/null
@@ -1,28 +0,0 @@
-import styles from './header-auth.module.scss';
-import {useRouter} from "next/router";
-
-export function HeaderAuth() {
-  const router = useRouter();
-
-  const goBack = (event) => {
-    router.back();
-  }
-
-  return (
-    <nav className="bg-white border-gray-200 px-2 sm:px-4 py-2.5 rounded dark:bg-gray-900">
-      <div className="container flex flex-wrap items-center justify-between mx-auto">
-        <div className="flex md:order-2">
-          <button type="button"
-                  onClick={(event) => goBack(event)}
-                  className="py-2.5 px-5 mr-2 mb-2 text-sm font-medium text-gray-900 focus:outline-none bg-white rounded-lg border border-gray-200 hover:bg-gray-100 hover:text-blue-700 focus:z-10 focus:ring-4 focus:ring-gray-200 dark:focus:ring-gray-700 dark:bg-gray-800 dark:text-gray-400 dark:border-gray-600 dark:hover:text-white dark:hover:bg-gray-700">
-            Retour au site
-          </button>
-        </div>
-        <div className="items-center justify-between hidden w-full md:flex md:w-auto md:order-1"
-             id="navbar-sticky"></div>
-      </div>
-    </nav>
-  );
-}
-
-export default HeaderAuth;
diff --git a/apps/website/components/header/header.spec.tsx b/apps/website/components/header/header.spec.tsx
index 3fd19ff..6a63192 100644
--- a/apps/website/components/header/header.spec.tsx
+++ b/apps/website/components/header/header.spec.tsx
@@ -1,10 +1,26 @@
-import { render } from '@testing-library/react';
+import {render} from '@testing-library/react';
+import {SessionProvider, useSession} from "next-auth/react";
 
 import Header from './header';
 
+jest.mock("next-auth/react", () => {
+  const originalModule = jest.requireActual('next-auth/react');
+  const mockSession = {
+    expires: new Date(Date.now() + 2 * 86400).toISOString(),
+    user: { username: "admin" }
+  };
+  return {
+    __esModule: true,
+    ...originalModule,
+    useSession: jest.fn(() => {
+      return {data: mockSession, status: 'authenticated'}  // return type is [] in v3 but changed to {} in v4
+    }),
+  };
+});
+
 describe('Header', () => {
   it('should render successfully', () => {
-    const { baseElement } = render(<Header />);
+    const {baseElement} = render(<Header/>);
     expect(baseElement).toBeTruthy();
   });
 });
diff --git a/apps/website/components/header/header.tsx b/apps/website/components/header/header.tsx
index 874091b..ca53371 100644
--- a/apps/website/components/header/header.tsx
+++ b/apps/website/components/header/header.tsx
@@ -15,21 +15,26 @@ export function Header({items = []}) {
     if (session == null) {
       return;
     }
-    console.log(session);
   }, [session]);
 
   useEffect(function mount() {
     const menuButton = document.getElementById('menu-dropdown-button');
     const menuZone = document.getElementById('menu-dropdown');
-    new Dropdown(menuZone, menuButton);
+    if (menuButton && menuZone) {
+      new Dropdown(menuZone, menuButton);
+    }
 
     const userButton = document.getElementById('user-menu-button');
     const userZone = document.getElementById('user-dropdown');
-    new Dropdown(userZone, userButton);
+    if (userButton && userZone) {
+      new Dropdown(userZone, userButton);
+    }
 
     const burgerButton = document.getElementById('menu-button');
     const megaZone = document.getElementById('navbar-dropdown');
-    new Collapse(megaZone, burgerButton);
+    if (burgerButton && megaZone) {
+      new Collapse(megaZone, burgerButton);
+    }
   });
 
   const renderGenerateItem = (item, index, isActive = false) => {
diff --git a/apps/website/components/layout/layout.spec.tsx b/apps/website/components/layout/layout.spec.tsx
index 56e3b81..5bb3c54 100644
--- a/apps/website/components/layout/layout.spec.tsx
+++ b/apps/website/components/layout/layout.spec.tsx
@@ -2,6 +2,21 @@ import { render } from '@testing-library/react';
 
 import Layout from './layout';
 
+jest.mock("next-auth/react", () => {
+  const originalModule = jest.requireActual('next-auth/react');
+  const mockSession = {
+    expires: new Date(Date.now() + 2 * 86400).toISOString(),
+    user: { username: "admin" }
+  };
+  return {
+    __esModule: true,
+    ...originalModule,
+    useSession: jest.fn(() => {
+      return {data: mockSession, status: 'authenticated'}  // return type is [] in v3 but changed to {} in v4
+    }),
+  };
+});
+
 describe('Layout', () => {
   it('should render successfully', () => {
     const { baseElement } = render(<Layout />);
diff --git a/apps/website/pages/index.spec.tsx b/apps/website/pages/index.spec.tsx
new file mode 100644
index 0000000..bf2a526
--- /dev/null
+++ b/apps/website/pages/index.spec.tsx
@@ -0,0 +1,26 @@
+import React from 'react';
+import {render} from '@testing-library/react';
+
+import Index from '../pages/index';
+
+jest.mock("next-auth/react", () => {
+  const originalModule = jest.requireActual('next-auth/react');
+  const mockSession = {
+    expires: new Date(Date.now() + 2 * 86400).toISOString(),
+    user: {username: "admin"}
+  };
+  return {
+    __esModule: true,
+    ...originalModule,
+    useSession: jest.fn(() => {
+      return {data: mockSession, status: 'authenticated'}  // return type is [] in v3 but changed to {} in v4
+    }),
+  };
+});
+
+describe('Index', () => {
+  it('should render successfully', () => {
+    const {baseElement} = render(<Index/>);
+    expect(baseElement).toBeTruthy();
+  });
+});
diff --git a/apps/website/specs/index.spec.tsx b/apps/website/specs/index.spec.tsx
deleted file mode 100644
index 42c9402..0000000
--- a/apps/website/specs/index.spec.tsx
+++ /dev/null
@@ -1,11 +0,0 @@
-import React from 'react';
-import { render } from '@testing-library/react';
-
-import Index from '../pages/index';
-
-describe('Index', () => {
-  it('should render successfully', () => {
-    const { baseElement } = render(<Index />);
-    expect(baseElement).toBeTruthy();
-  });
-});