// 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'; import 'package:sample_catalog/expansion_tile_sample.dart' as expansion_tile_sample; import 'package:sample_catalog/expansion_tile_sample.dart' show Entry; void main() { testWidgets('expansion_tile sample smoke test', (WidgetTester tester) async { expansion_tile_sample.main(); await tester.pump(); // Initially only the top level EntryItems (the "chapters") are present. for (final Entry chapter in expansion_tile_sample.data) { expect(find.text(chapter.title), findsOneWidget); for (final Entry section in chapter.children) { expect(find.text(section.title), findsNothing); for (final Entry item in section.children) expect(find.text(item.title), findsNothing); } } Future<void> scrollUpOneEntry() async { await tester.dragFrom(const Offset(200.0, 200.0), const Offset(0.0, -88.00)); await tester.pumpAndSettle(); } Future<void> tapEntry(String title) async { await tester.tap(find.text(title)); await tester.pumpAndSettle(); } // Expand the chapters. Now the chapter and sections, but not the // items, should be present. for (final Entry chapter in expansion_tile_sample.data.reversed) await tapEntry(chapter.title); for (final Entry chapter in expansion_tile_sample.data) { expect(find.text(chapter.title), findsOneWidget); for (final Entry section in chapter.children) { expect(find.text(section.title), findsOneWidget); await scrollUpOneEntry(); for (final Entry item in section.children) expect(find.text(item.title), findsNothing); } await scrollUpOneEntry(); } // - scroll to the top - await tester.flingFrom(const Offset(200.0, 200.0), const Offset(0.0, 100.0), 5000.0); await tester.pumpAndSettle(); // Expand the sections. Now Widgets for all three levels should be present. for (final Entry chapter in expansion_tile_sample.data) { for (final Entry section in chapter.children) { await tapEntry(section.title); await scrollUpOneEntry(); } await scrollUpOneEntry(); } // We're scrolled to the bottom so the very last item is visible. // Working in reverse order, so we don't need to do anymore scrolling, // check that everything is visible and close the sections and // chapters as we go up. for (final Entry chapter in expansion_tile_sample.data.reversed) { expect(find.text(chapter.title), findsOneWidget); for (final Entry section in chapter.children.reversed) { expect(find.text(section.title), findsOneWidget); for (final Entry item in section.children.reversed) expect(find.text(item.title), findsOneWidget); await tapEntry(section.title); // close the section } await tapEntry(chapter.title); // close the chapter } // Finally only the top level EntryItems (the "chapters") are present. for (final Entry chapter in expansion_tile_sample.data) { expect(find.text(chapter.title), findsOneWidget); for (final Entry section in chapter.children) { expect(find.text(section.title), findsNothing); for (final Entry item in section.children) expect(find.text(item.title), findsNothing); } } }); }