// Copyright 2017 The Chromium 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_gallery/demo/material/drawer_demo.dart'; import 'package:flutter_test/flutter_test.dart'; void main() { testWidgets('Drawer header does not scroll', (WidgetTester tester) async { await tester.pumpWidget(new MaterialApp( theme: new ThemeData(platform: TargetPlatform.iOS), home: new DrawerDemo(), )); await tester.tap(find.text('Tap here to open the drawer')); await tester.pump(); await tester.pump(const Duration(milliseconds: 500)); expect(tester.getTopLeft(find.byType(UserAccountsDrawerHeader)).dy, 0.0); final double initialTopItemSaneY = tester.getTopLeft(find.text('Drawer item A')).dy; expect(initialTopItemSaneY, greaterThan(0.0)); await tester.drag(find.text('Drawer item B'), const Offset(0.0, 400.0)); await tester.pump(); expect(tester.getTopLeft(find.byType(UserAccountsDrawerHeader)).dy, 0.0); expect(tester.getTopLeft(find.text('Drawer item A')).dy, greaterThan(initialTopItemSaneY)); expect(tester.getTopLeft(find.text('Drawer item A')).dy, lessThanOrEqualTo(initialTopItemSaneY + 400.0)); }); }