add test subpage and put it on header

src/main/webapp/app/modules/test/test-website.tsx

@@ -0,0 +1,17 @@
+import { Row } from 'reactstrap';
+import React from 'react';
+
+export const TestWebsite = () => {
+  return (
+    <>
+      <Row>
+        <h2>Here you can add your mockup implementation. Good luck :)</h2>
+      </Row>
+      <Row>
+        <h3>Remember to change "TestWebsite" module and header component to the proper name</h3>
+      </Row>
+    </>
+  );
+};
+
+export default TestWebsite;

src/main/webapp/app/routes.tsx

@@ -14,6 +14,7 @@ import PrivateRoute from 'app/shared/auth/private-route';
 import ErrorBoundaryRoutes from 'app/shared/error/error-boundary-routes';
 import PageNotFound from 'app/shared/error/page-not-found';
 import { AUTHORITIES } from 'app/config/constants';
+import TestWebsite from 'app/modules/test/test-website';
 
 const loading = <div>loading ...</div>;
 
@@ -34,6 +35,14 @@ const AppRoutes = () => {
         <Route index element={<Home />} />
         <Route path="login" element={<Login />} />
         <Route path="logout" element={<Logout />} />
+        <Route
+          path="test-website"
+          element={
+            <PrivateRoute hasAnyAuthorities={[AUTHORITIES.ADMIN, AUTHORITIES.USER]}>
+              <TestWebsite />
+            </PrivateRoute>
+          }
+        />
         <Route path="account">
           <Route
             path="*"

src/main/webapp/app/shared/layout/header/header-components.tsx

@@ -26,3 +26,11 @@ export const Home = () => (
     </NavLink>
   </NavItem>
 );
+
+export const TestWebsite = () => (
+  <NavItem>
+    <NavLink tag={Link} to="/test-website" className="d-flex align-items-center">
+      <span>Test Website</span>
+    </NavLink>
+  </NavItem>
+);

src/main/webapp/app/shared/layout/header/header.tsx

@@ -5,7 +5,7 @@ import React, { useState } from 'react';
 import { Navbar, Nav, NavbarToggler, Collapse } from 'reactstrap';
 import LoadingBar from 'react-redux-loading-bar';
 
-import { Home, Brand } from './header-components';
+import { Home, Brand, TestWebsite } from './header-components';
 import { AdminMenu, EntitiesMenu, AccountMenu } from '../menus';
 
 export interface IHeaderProps {
@@ -40,6 +40,7 @@ const Header = (props: IHeaderProps) => {
         <Collapse isOpen={menuOpen} navbar>
           <Nav id="header-tabs" className="ms-auto" navbar>
             <Home />
+            {props.isAuthenticated && <TestWebsite />}
             {props.isAuthenticated && <EntitiesMenu />}
             {props.isAuthenticated && props.isAdmin && (
               <AdminMenu showOpenAPI={props.isOpenAPIEnabled} showDatabase={!props.isInProduction} />