1// Copyright 2014 The Flutter Authors. All rights reserved.
2// Use of this source code is governed by a BSD-style license that can be
3// found in the LICENSE file.
4
5import 'package:flutter/material.dart';
6import 'package:flutter_api_samples/material/bottom_sheet/show_modal_bottom_sheet.2.dart'
7 as example;
8import 'package:flutter_test/flutter_test.dart';
9
10void main() {
11 testWidgets('Modal bottom sheet animation can be customized using AnimationStyle', (
12 WidgetTester tester,
13 ) async {
14 await tester.pumpWidget(const example.ModalBottomSheetApp());
15
16 // Show the bottom sheet with default animation style.
17 await tester.tap(find.widgetWithText(ElevatedButton, 'showModalBottomSheet'));
18 await tester.pump();
19 // Advance the animation by 1/2 of the default forward duration.
20 await tester.pump(const Duration(milliseconds: 125));
21
22 // The bottom sheet is partially visible.
23 expect(tester.getTopLeft(find.byType(BottomSheet)).dy, closeTo(316.7, 0.1));
24
25 // Advance the animation by 1/2 of the default forward duration.
26 await tester.pump(const Duration(milliseconds: 125));
27
28 // The bottom sheet is fully visible.
29 expect(tester.getTopLeft(find.byType(BottomSheet)).dy, equals(262.5));
30
31 // Dismiss the bottom sheet.
32 await tester.tap(find.widgetWithText(ElevatedButton, 'Close'));
33 await tester.pumpAndSettle();
34
35 // Select custom animation style.
36 await tester.tap(find.text('Custom'));
37 await tester.pumpAndSettle();
38
39 // Show the bottom sheet with custom animation style.
40 await tester.tap(find.widgetWithText(ElevatedButton, 'showModalBottomSheet'));
41 await tester.pump();
42 // Advance the animation by 1/2 of the custom forward duration.
43 await tester.pump(const Duration(milliseconds: 1500));
44
45 // The bottom sheet is partially visible.
46 expect(tester.getTopLeft(find.byType(BottomSheet)).dy, closeTo(316.7, 0.1));
47
48 // Advance the animation by 1/2 of the custom forward duration.
49 await tester.pump(const Duration(milliseconds: 1500));
50
51 // The bottom sheet is fully visible.
52 expect(tester.getTopLeft(find.byType(BottomSheet)).dy, equals(262.5));
53
54 // Dismiss the bottom sheet.
55 await tester.tap(find.widgetWithText(ElevatedButton, 'Close'));
56 await tester.pumpAndSettle();
57
58 // Select no animation style.
59 await tester.tap(find.text('None'));
60 await tester.pumpAndSettle();
61
62 // Show the bottom sheet with no animation style.
63 await tester.tap(find.widgetWithText(ElevatedButton, 'showModalBottomSheet'));
64 await tester.pump();
65 expect(tester.getTopLeft(find.byType(BottomSheet)).dy, equals(262.5));
66 });
67}
68

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