// 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_api_samples/material/expansion_tile/expansion_tile.0.dart' as example; import 'package:flutter_test/flutter_test.dart'; void main() { testWidgets('When expansion tiles are expanded tile numbers are revealed', (WidgetTester tester) async { const int totalTiles = 3; await tester.pumpWidget( const example.ExpansionTileApp(), ); expect(find.byType(ExpansionTile), findsNWidgets(totalTiles)); const String tileOne = 'This is tile number 1'; expect(find.text(tileOne), findsNothing); await tester.tap(find.text('ExpansionTile 1')); await tester.pumpAndSettle(); expect(find.text(tileOne), findsOneWidget); const String tileTwo = 'This is tile number 2'; expect(find.text(tileTwo), findsNothing); await tester.tap(find.text('ExpansionTile 2')); await tester.pumpAndSettle(); expect(find.text(tileTwo), findsOneWidget); const String tileThree = 'This is tile number 3'; expect(find.text(tileThree), findsNothing); await tester.tap(find.text('ExpansionTile 3')); await tester.pumpAndSettle(); expect(find.text(tileThree), findsOneWidget); }); }