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meshcore-client/test/helpers/settings_persist_test.dart

48 lines
1.2 KiB

import 'package:flutter/material.dart';
import 'package:flutter_test/flutter_test.dart';
import 'package:meshcore_open/helpers/settings_persist.dart';
void main() {
Widget harness(Future<void> Function() action) {
return MaterialApp(
home: Scaffold(
body: Builder(
builder: (context) => ElevatedButton(
onPressed: () =>
persistSetting(context, action, message: 'Save failed'),
child: const Text('go'),
),
),
),
);
}
testWidgets('shows an error SnackBar when the persist action throws', (
tester,
) async {
await tester.pumpWidget(
harness(() async {
throw Exception('boom');
}),
);
await tester.tap(find.text('go'));
await tester.pump(); // run persistSetting (catch + schedule SnackBar)
await tester.pump(); // build the SnackBar
expect(find.text('Save failed'), findsOneWidget);
});
testWidgets('shows no SnackBar when the persist action succeeds', (
tester,
) async {
await tester.pumpWidget(harness(() async {}));
await tester.tap(find.text('go'));
await tester.pump();
await tester.pump();
expect(find.byType(SnackBar), findsNothing);
});
}

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