Added react-oidc (use demo/demo)

Added an example of an authentication protected page (tenders)
Added an example with the built in proxy (to combat CORS) (tendersguru)

src/infrastructure/navbar/Navbar.spec.tsx

@@ -1,18 +1,25 @@
-import { render, screen } from "@testing-library/react";
+import { render, screen, waitFor } from "@testing-library/react";
 import { WithTestTranslations } from "../../app/tests/mocks/i18n/WithTestTranslations";
+import { OidcProvider } from "../sso/OidcProvider";
 import { WithRouter } from "../wrappers/WithRouter";
 import { Navbar } from "./Navbar";
 
 describe("Navbar container", () => {
-  it.only("renders a navigation section identified by the nav test-id", () => {
+  it.only("renders a navigation section identified by the nav test-id", async () => {
     render(
       <WithTestTranslations>
-        <WithRouter>
-          <Navbar />
-        </WithRouter>
+        {/* for simple tests where we don't need auth we don't actually have to mock responses */}
+        <OidcProvider>
+          <WithRouter>
+            <Navbar />
+          </WithRouter>
+        </OidcProvider>
       </WithTestTranslations>,
     );
-
-    expect(screen.getAllByTestId("nav")?.length).toBeGreaterThan(0);
+    // because of the extra loaders we wait for a result just to be sure
+    // see: https://testing-library.com/docs/guide-disappearance/
+    await waitFor(() => {
+      expect(screen.getAllByTestId("nav")?.length).toBeGreaterThan(0);
+    });
   });
 });