// Copyright 2014 The Flutter Authors. All rights reserved. // Use of this source code is governed by a BSD-style license that can be // found in the LICENSE file. import 'package:flutter/material.dart'; import 'package:flutter_test/flutter_test.dart'; void main() { testWidgets('TextField works correctly when changing helperText', (WidgetTester tester) async { await tester.pumpWidget(const MaterialApp(home: Material(child: TextField(decoration: InputDecoration(helperText: 'Awesome'))))); expect(find.text('Awesome'), findsNWidgets(1)); await tester.pump(const Duration(milliseconds: 100)); expect(find.text('Awesome'), findsNWidgets(1)); await tester.pumpWidget(const MaterialApp(home: Material(child: TextField(decoration: InputDecoration(errorText: 'Awesome'))))); expect(find.text('Awesome'), findsNWidgets(2)); }); }