message: fix(router): should throw when lazy loaded module doesn't define any routes
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  PR Close
diff: @@ -2697,6 +2697,27 @@ describe('Integration', () => {
  expect(fixture.nativeElement).toHaveText('lazy-loaded-parent [lazy-loaded-child]');
  })));
  + it(`should throw an error when lazy loaded module does not provide any routes`,
  + fakeAsync(inject(
  + [Router, Location, NgModuleFactoryLoader],
  + (router: Router, location: Location, loader: SpyNgModuleFactoryLoader) => {
  +
  + @NgModule({})
  + class LazyLoadedModule {
  + }
  +
  + loader.stubbedModules = {expected: LazyLoadedModule};
  +
  + const fixture = createRoot(router, RootCmp);
  +
  + router.resetConfig([{path: 'lazy', loadChildren: 'expected'}]);
  +
  + router.navigateByUrl('/lazy');
  + expect(() => advance(fixture))
  + .toThrowError(
  + /A lazy loaded module must define at least 1 route, but it seems like the 'LazyLoadedModule' module hasn't defined any/);
  + })));
  +
  it('should have 2 injector trees: module and element',
  fakeAsync(inject(
  [Router, Location, NgModuleFactoryLoader],
  