fix(test): move all test apps

apps/testing/router-outlet/src/app/book.guard.ts

@@ -0,0 +1,20 @@
+import { inject } from '@angular/core';
+import { ActivatedRouteSnapshot, Router } from '@angular/router';
+import { availableBooks } from './book.model';
+
+export const bookGuard = (
+  route: ActivatedRouteSnapshot,
+  router = inject(Router)
+) => {
+  const searchParam = route.queryParams?.['book'].toLowerCase();
+
+  const isBookAvailable =
+    !!searchParam &&
+    availableBooks.some(
+      (b) =>
+        b.author.toLowerCase().includes(searchParam) ||
+        b.name.toLowerCase().includes(searchParam)
+    );
+
+  return isBookAvailable || router.parseUrl('no-result');
+};