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pluriwave/test/pantallas/pantalla_buscar_shimmer_test.dart
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Dart

import 'package:flutter/material.dart';
import 'package:flutter_test/flutter_test.dart';
import 'package:pluriwave/estado/estado_busqueda.dart';
import 'package:pluriwave/estado/estado_ecualizador.dart';
import 'package:pluriwave/estado/estado_grabacion.dart';
import 'package:pluriwave/estado/estado_radio.dart';
import 'package:pluriwave/l10n/gen/app_localizations.dart';
import 'package:pluriwave/pantallas/pantalla_buscar.dart';
import 'package:pluriwave/widgets/tarjeta_emisora.dart';
import 'package:provider/provider.dart';
import 'package:shared_preferences/shared_preferences.dart';
import '../helpers/fakes.dart';
/// S5-R6: the search loading state uses shimmer placeholders, not a bare
/// spinner, to stay consistent with the rest of the app.
///
/// WU6 correction: `PantallaBuscar` now also renders a discovery LANDING
/// state (task 6.5) that reads `EstadoRadio` directly, so any widget test
/// mounting it — this one included — must provide a full `EstadoRadio`
/// provider from the start, not just `EstadoBusqueda`. A non-empty query is
/// entered first so the screen leaves the landing state and reaches the
/// search-results branch this test actually targets.
class _BusquedaCargando extends EstadoBusqueda {
_BusquedaCargando() : super(radio: FakeServicioRadio());
@override
bool get cargando => true;
}
void main() {
setUp(() {
SharedPreferences.setMockInitialValues({});
});
testWidgets('PantallaBuscar muestra shimmer mientras carga', (tester) async {
final busqueda = _BusquedaCargando();
addTearDown(busqueda.dispose);
final estado = EstadoRadio(
audio: FakeServicioAudio(),
favoritos: FakeServicioFavoritos(),
radio: FakeServicioRadio(),
servicioEcualizador: FakeServicioEcualizador(),
servicioGrabacion: FakeServicioGrabacionRadio(),
resolverArchivoCustom: () async => throw UnimplementedError(),
iniciarAutomaticamente: false,
);
addTearDown(estado.dispose);
await tester.pumpWidget(
MultiProvider(
providers: [
ChangeNotifierProvider<EstadoRadio>.value(value: estado),
ListenableProvider<EstadoEcualizador>.value(
value: estado.ecualizador,
),
ListenableProvider<EstadoGrabacion>.value(value: estado.grabacion),
// Overrides EstadoRadio's own (unused here) EstadoBusqueda with a
// fake pinned to cargando: true.
ListenableProvider<EstadoBusqueda>.value(value: busqueda),
],
child: MaterialApp(
locale: const Locale('es'),
localizationsDelegates: AppLocalizations.localizationsDelegates,
supportedLocales: AppLocalizations.supportedLocales,
home: const Scaffold(body: PantallaBuscar()),
),
),
);
await tester.pump();
// Still the landing state — no query entered yet.
expect(find.byType(TarjetaEmisoraShimmer), findsNothing);
await tester.enterText(find.byType(SearchBar), 'jazz');
await tester.pump();
expect(find.byType(TarjetaEmisoraShimmer), findsWidgets);
expect(find.byType(CircularProgressIndicator), findsNothing);
});
}