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1066 lines
33 KiB
Dart
1066 lines
33 KiB
Dart
// Copyright 2014 The Flutter Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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import 'package:collection/collection.dart';
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import 'package:flutter/gestures.dart';
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import 'package:flutter/material.dart';
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import 'package:flutter/semantics.dart';
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import 'package:flutter_test/flutter_test.dart';
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import 'package:stack_trace/stack_trace.dart';
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class TestDragData {
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const TestDragData(
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this.slop,
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this.dragDistance,
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this.expectedOffsets,
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);
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final Offset slop;
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final Offset dragDistance;
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final List<Offset> expectedOffsets;
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}
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void main() {
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testWidgets(
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'WidgetTester.drag must break the offset into multiple parallel components if '
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'the drag goes outside the touch slop values',
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(WidgetTester tester) async {
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// This test checks to make sure that the total drag will be correctly split into
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// pieces such that the first (and potentially second) moveBy function call(s) in
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// controller.drag() will never have a component greater than the touch
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// slop in that component's respective axis.
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const List<TestDragData> offsetResults = <TestDragData>[
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TestDragData(
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Offset(10.0, 10.0),
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Offset(-150.0, 200.0),
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<Offset>[
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Offset(-7.5, 10.0),
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Offset(-2.5, 3.333333333333333),
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Offset(-140.0, 186.66666666666666),
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],
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),
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TestDragData(
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Offset(10.0, 10.0),
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Offset(150, -200),
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<Offset>[
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Offset(7.5, -10),
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Offset(2.5, -3.333333333333333),
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Offset(140.0, -186.66666666666666),
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],
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),
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TestDragData(
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Offset(10.0, 10.0),
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Offset(-200, 150),
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<Offset>[
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Offset(-10, 7.5),
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Offset(-3.333333333333333, 2.5),
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Offset(-186.66666666666666, 140.0),
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],
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),
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TestDragData(
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Offset(10.0, 10.0),
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Offset(200.0, -150.0),
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<Offset>[
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Offset(10, -7.5),
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Offset(3.333333333333333, -2.5),
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Offset(186.66666666666666, -140.0),
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],
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),
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TestDragData(
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Offset(10.0, 10.0),
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Offset(-150.0, -200.0),
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<Offset>[
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Offset(-7.5, -10.0),
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Offset(-2.5, -3.333333333333333),
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Offset(-140.0, -186.66666666666666),
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],
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),
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TestDragData(
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Offset(10.0, 10.0),
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Offset(8.0, 3.0),
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<Offset>[
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Offset(8.0, 3.0),
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],
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),
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TestDragData(
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Offset(10.0, 10.0),
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Offset(3.0, 8.0),
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<Offset>[
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Offset(3.0, 8.0),
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],
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),
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TestDragData(
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Offset(10.0, 10.0),
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Offset(20.0, 5.0),
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<Offset>[
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Offset(10.0, 2.5),
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Offset(10.0, 2.5),
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],
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),
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TestDragData(
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Offset(10.0, 10.0),
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Offset(5.0, 20.0),
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<Offset>[
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Offset(2.5, 10.0),
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Offset(2.5, 10.0),
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],
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),
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TestDragData(
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Offset(10.0, 10.0),
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Offset(20.0, 15.0),
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<Offset>[
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Offset(10.0, 7.5),
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Offset(3.333333333333333, 2.5),
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Offset(6.666666666666668, 5.0),
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],
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),
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TestDragData(
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Offset(10.0, 10.0),
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Offset(15.0, 20.0),
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<Offset>[
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Offset(7.5, 10.0),
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Offset(2.5, 3.333333333333333),
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Offset(5.0, 6.666666666666668),
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],
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),
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TestDragData(
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Offset(10.0, 10.0),
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Offset(20.0, 20.0),
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<Offset>[
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Offset(10.0, 10.0),
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Offset(10.0, 10.0),
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],
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),
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TestDragData(
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Offset(10.0, 10.0),
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Offset(0.0, 5.0),
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<Offset>[
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Offset(0.0, 5.0),
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],
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),
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//// Varying touch slops
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TestDragData(
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Offset(12.0, 5.0),
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Offset(0.0, 5.0),
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<Offset>[
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Offset(0.0, 5.0),
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],
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),
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TestDragData(
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Offset(12.0, 5.0),
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Offset(20.0, 5.0),
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<Offset>[
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Offset(12.0, 3.0),
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Offset(8.0, 2.0),
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],
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),
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TestDragData(
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Offset(12.0, 5.0),
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Offset(5.0, 20.0),
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<Offset>[
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Offset(1.25, 5.0),
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Offset(3.75, 15.0),
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],
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),
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TestDragData(
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Offset(5.0, 12.0),
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Offset(5.0, 20.0),
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<Offset>[
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Offset(3.0, 12.0),
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Offset(2.0, 8.0),
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],
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),
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TestDragData(
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Offset(5.0, 12.0),
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Offset(20.0, 5.0),
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<Offset>[
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Offset(5.0, 1.25),
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Offset(15.0, 3.75),
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],
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),
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TestDragData(
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Offset(18.0, 18.0),
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Offset(0.0, 150.0),
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<Offset>[
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Offset(0.0, 18.0),
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Offset(0.0, 132.0),
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],
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),
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TestDragData(
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Offset(18.0, 18.0),
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Offset(0.0, -150.0),
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<Offset>[
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Offset(0.0, -18.0),
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Offset(0.0, -132.0),
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],
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),
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TestDragData(
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Offset(18.0, 18.0),
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Offset(-150.0, 0.0),
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<Offset>[
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Offset(-18.0, 0.0),
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Offset(-132.0, 0.0),
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],
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),
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TestDragData(
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Offset.zero,
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Offset(-150.0, 0.0),
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<Offset>[
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Offset(-150.0, 0.0),
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],
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),
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TestDragData(
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Offset(18.0, 18.0),
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Offset(-32.0, 0.0),
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<Offset>[
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Offset(-18.0, 0.0),
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Offset(-14.0, 0.0),
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],
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),
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];
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final List<Offset> dragOffsets = <Offset>[];
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await tester.pumpWidget(
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Listener(
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onPointerMove: (PointerMoveEvent event) {
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dragOffsets.add(event.delta);
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},
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child: const Text('test', textDirection: TextDirection.ltr),
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),
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);
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for (int resultIndex = 0; resultIndex < offsetResults.length; resultIndex += 1) {
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final TestDragData testResult = offsetResults[resultIndex];
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await tester.drag(
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find.text('test'),
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testResult.dragDistance,
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touchSlopX: testResult.slop.dx,
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touchSlopY: testResult.slop.dy,
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);
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expect(
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testResult.expectedOffsets.length,
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dragOffsets.length,
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reason:
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'There is a difference in the number of expected and actual split offsets for the drag with:\n'
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'Touch Slop: ${testResult.slop}\n'
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'Delta: ${testResult.dragDistance}\n',
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);
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for (int valueIndex = 0; valueIndex < offsetResults[resultIndex].expectedOffsets.length; valueIndex += 1) {
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expect(
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testResult.expectedOffsets[valueIndex],
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offsetMoreOrLessEquals(dragOffsets[valueIndex]),
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reason:
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'There is a difference in the expected and actual value of the '
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'${valueIndex == 2 ? 'first' : valueIndex == 3 ? 'second' : 'third'}'
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' split offset for the drag with:\n'
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'Touch slop: ${testResult.slop}\n'
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'Delta: ${testResult.dragDistance}\n'
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);
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}
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dragOffsets.clear();
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}
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},
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);
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testWidgets(
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'WidgetTester.tap must respect buttons',
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(WidgetTester tester) async {
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final List<String> logs = <String>[];
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await tester.pumpWidget(
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Directionality(
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textDirection: TextDirection.ltr,
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child: Listener(
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onPointerDown: (PointerDownEvent event) => logs.add('down ${event.buttons}'),
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onPointerMove: (PointerMoveEvent event) => logs.add('move ${event.buttons}'),
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onPointerUp: (PointerUpEvent event) => logs.add('up ${event.buttons}'),
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child: const Text('test'),
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),
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),
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);
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await tester.tap(find.text('test'), buttons: kSecondaryMouseButton);
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const String b = '$kSecondaryMouseButton';
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for(int i = 0; i < logs.length; i++) {
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if (i == 0) {
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expect(logs[i], 'down $b');
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} else if (i != logs.length - 1) {
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expect(logs[i], 'move $b');
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} else {
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expect(logs[i], 'up 0');
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}
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}
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},
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);
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testWidgets(
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'WidgetTester.press must respect buttons',
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(WidgetTester tester) async {
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final List<String> logs = <String>[];
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await tester.pumpWidget(
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Directionality(
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textDirection: TextDirection.ltr,
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child: Listener(
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onPointerDown: (PointerDownEvent event) => logs.add('down ${event.buttons}'),
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onPointerMove: (PointerMoveEvent event) => logs.add('move ${event.buttons}'),
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onPointerUp: (PointerUpEvent event) => logs.add('up ${event.buttons}'),
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child: const Text('test'),
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),
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),
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);
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await tester.press(find.text('test'), buttons: kSecondaryMouseButton);
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const String b = '$kSecondaryMouseButton';
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expect(logs, equals(<String>['down $b']));
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},
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);
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testWidgets(
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'WidgetTester.longPress must respect buttons',
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(WidgetTester tester) async {
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final List<String> logs = <String>[];
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await tester.pumpWidget(
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Directionality(
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textDirection: TextDirection.ltr,
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child: Listener(
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onPointerDown: (PointerDownEvent event) => logs.add('down ${event.buttons}'),
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onPointerMove: (PointerMoveEvent event) => logs.add('move ${event.buttons}'),
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onPointerUp: (PointerUpEvent event) => logs.add('up ${event.buttons}'),
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child: const Text('test'),
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),
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),
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);
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await tester.longPress(find.text('test'), buttons: kSecondaryMouseButton);
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await tester.pumpAndSettle();
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const String b = '$kSecondaryMouseButton';
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for(int i = 0; i < logs.length; i++) {
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if (i == 0) {
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expect(logs[i], 'down $b');
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} else if (i != logs.length - 1) {
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expect(logs[i], 'move $b');
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} else {
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expect(logs[i], 'up 0');
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}
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}
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},
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);
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testWidgets(
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'WidgetTester.drag must respect buttons',
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(WidgetTester tester) async {
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final List<String> logs = <String>[];
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await tester.pumpWidget(
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Directionality(
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textDirection: TextDirection.ltr,
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child: Listener(
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onPointerDown: (PointerDownEvent event) => logs.add('down ${event.buttons}'),
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onPointerMove: (PointerMoveEvent event) => logs.add('move ${event.buttons}'),
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onPointerUp: (PointerUpEvent event) => logs.add('up ${event.buttons}'),
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child: const Text('test'),
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),
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),
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);
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await tester.drag(find.text('test'), const Offset(-150.0, 200.0), buttons: kSecondaryMouseButton);
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const String b = '$kSecondaryMouseButton';
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for(int i = 0; i < logs.length; i++) {
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if (i == 0) {
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expect(logs[i], 'down $b');
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} else if (i != logs.length - 1) {
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expect(logs[i], 'move $b');
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} else {
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expect(logs[i], 'up 0');
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}
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}
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},
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);
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testWidgets(
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'WidgetTester.drag works with trackpad kind',
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(WidgetTester tester) async {
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final List<String> logs = <String>[];
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await tester.pumpWidget(
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Directionality(
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textDirection: TextDirection.ltr,
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child: Listener(
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onPointerDown: (PointerDownEvent event) => logs.add('down ${event.buttons}'),
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onPointerMove: (PointerMoveEvent event) => logs.add('move ${event.buttons}'),
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onPointerUp: (PointerUpEvent event) => logs.add('up ${event.buttons}'),
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onPointerPanZoomStart: (PointerPanZoomStartEvent event) => logs.add('panZoomStart'),
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onPointerPanZoomUpdate: (PointerPanZoomUpdateEvent event) => logs.add('panZoomUpdate ${event.pan}'),
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onPointerPanZoomEnd: (PointerPanZoomEndEvent event) => logs.add('panZoomEnd'),
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child: const Text('test'),
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),
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),
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);
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await tester.drag(find.text('test'), const Offset(-150.0, 200.0), kind: PointerDeviceKind.trackpad);
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for(int i = 0; i < logs.length; i++) {
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if (i == 0) {
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expect(logs[i], 'panZoomStart');
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} else if (i != logs.length - 1) {
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expect(logs[i], startsWith('panZoomUpdate'));
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} else {
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expect(logs[i], 'panZoomEnd');
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}
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}
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},
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);
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testWidgets(
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'WidgetTester.fling must respect buttons',
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(WidgetTester tester) async {
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final List<String> logs = <String>[];
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await tester.pumpWidget(
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Directionality(
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textDirection: TextDirection.ltr,
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child: Listener(
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onPointerDown: (PointerDownEvent event) => logs.add('down ${event.buttons}'),
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onPointerMove: (PointerMoveEvent event) => logs.add('move ${event.buttons}'),
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onPointerUp: (PointerUpEvent event) => logs.add('up ${event.buttons}'),
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child: const Text('test'),
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),
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),
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);
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await tester.fling(find.text('test'), const Offset(-10.0, 0.0), 1000.0, buttons: kSecondaryMouseButton);
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await tester.pumpAndSettle();
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const String b = '$kSecondaryMouseButton';
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for(int i = 0; i < logs.length; i++) {
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if (i == 0) {
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expect(logs[i], 'down $b');
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} else if (i != logs.length - 1) {
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expect(logs[i], 'move $b');
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} else {
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expect(logs[i], 'up 0');
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}
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}
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},
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);
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testWidgets(
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'WidgetTester.fling produces strictly monotonically increasing timestamps, '
|
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'when given a large velocity',
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(WidgetTester tester) async {
|
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// Velocity trackers may misbehave if the `PointerMoveEvent`s' have the
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// same timestamp. This is more likely to happen when the velocity tracker
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// has a small sample size.
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final List<Duration> logs = <Duration>[];
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await tester.pumpWidget(
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Directionality(
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textDirection: TextDirection.ltr,
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child: Listener(
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onPointerMove: (PointerMoveEvent event) => logs.add(event.timeStamp),
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child: const Text('test'),
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),
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),
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);
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await tester.fling(find.text('test'), const Offset(0.0, -50.0), 10000.0);
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await tester.pumpAndSettle();
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for (int i = 0; i + 1 < logs.length; i += 1) {
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expect(logs[i + 1], greaterThan(logs[i]));
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}
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});
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|
testWidgets(
|
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'WidgetTester.timedDrag must respect buttons',
|
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(WidgetTester tester) async {
|
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final List<String> logs = <String>[];
|
|
|
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await tester.pumpWidget(
|
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Directionality(
|
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textDirection: TextDirection.ltr,
|
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child: Listener(
|
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onPointerDown: (PointerDownEvent event) => logs.add('down ${event.buttons}'),
|
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onPointerMove: (PointerMoveEvent event) => logs.add('move ${event.buttons}'),
|
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onPointerUp: (PointerUpEvent event) => logs.add('up ${event.buttons}'),
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child: const Text('test'),
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),
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),
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);
|
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|
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await tester.timedDrag(
|
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find.text('test'),
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const Offset(-200.0, 0.0),
|
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const Duration(seconds: 1),
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buttons: kSecondaryMouseButton,
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);
|
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await tester.pumpAndSettle();
|
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|
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const String b = '$kSecondaryMouseButton';
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for(int i = 0; i < logs.length; i++) {
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if (i == 0) {
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expect(logs[i], 'down $b');
|
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} else if (i != logs.length - 1) {
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expect(logs[i], 'move $b');
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} else {
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expect(logs[i], 'up 0');
|
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}
|
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}
|
|
},
|
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);
|
|
|
|
testWidgets(
|
|
'WidgetTester.timedDrag uses correct pointer',
|
|
(WidgetTester tester) async {
|
|
final List<String> logs = <String>[];
|
|
|
|
await tester.pumpWidget(
|
|
Directionality(
|
|
textDirection: TextDirection.ltr,
|
|
child: Listener(
|
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onPointerDown: (PointerDownEvent event) => logs.add('down ${event.pointer}'),
|
|
child: const Text('test'),
|
|
),
|
|
),
|
|
);
|
|
|
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await tester.timedDrag(
|
|
find.text('test'),
|
|
const Offset(-200.0, 0.0),
|
|
const Duration(seconds: 1),
|
|
buttons: kSecondaryMouseButton,
|
|
);
|
|
await tester.pumpAndSettle();
|
|
|
|
await tester.timedDrag(
|
|
find.text('test'),
|
|
const Offset(200.0, 0.0),
|
|
const Duration(seconds: 1),
|
|
buttons: kSecondaryMouseButton,
|
|
);
|
|
await tester.pumpAndSettle();
|
|
|
|
expect(logs.length, 2);
|
|
expect(logs[0], isNotNull);
|
|
expect(logs[1], isNotNull);
|
|
expect(logs[1] != logs[0], isTrue);
|
|
},
|
|
);
|
|
|
|
testWidgets(
|
|
'WidgetTester.tap appears in stack trace on error',
|
|
(WidgetTester tester) async {
|
|
// Regression test from https://github.com/flutter/flutter/pull/123946
|
|
await tester.pumpWidget(
|
|
const MaterialApp(home: Scaffold(body: Text('target'))));
|
|
|
|
final TestGesture gesture = await tester.startGesture(
|
|
tester.getCenter(find.text('target')), pointer: 1);
|
|
addTearDown(() => gesture.up());
|
|
|
|
Trace? stackTrace;
|
|
try {
|
|
await tester.tap(find.text('target'), pointer: 1);
|
|
} on Error catch (e) {
|
|
stackTrace = Trace.from(e.stackTrace!);
|
|
}
|
|
expect(stackTrace, isNotNull);
|
|
|
|
final int tapFrame = stackTrace!.frames.indexWhere(
|
|
(Frame frame) => frame.member == 'WidgetController.tap');
|
|
expect(tapFrame, greaterThanOrEqualTo(0));
|
|
expect(stackTrace.frames[tapFrame].package, 'flutter_test');
|
|
expect(stackTrace.frames[tapFrame+1].member, 'main.<fn>');
|
|
expect(stackTrace.frames[tapFrame+1].package, null);
|
|
},
|
|
);
|
|
|
|
testWidgets(
|
|
'ensureVisible: scrolls to make widget visible',
|
|
(WidgetTester tester) async {
|
|
await tester.pumpWidget(
|
|
MaterialApp(
|
|
home: Scaffold(
|
|
body: ListView.builder(
|
|
itemCount: 20,
|
|
shrinkWrap: true,
|
|
itemBuilder: (BuildContext context, int i) => ListTile(title: Text('Item $i')),
|
|
),
|
|
),
|
|
),
|
|
);
|
|
|
|
// Make sure widget isn't on screen
|
|
expect(find.text('Item 15'), findsNothing);
|
|
|
|
await tester.ensureVisible(find.text('Item 15', skipOffstage: false));
|
|
await tester.pumpAndSettle();
|
|
|
|
expect(find.text('Item 15'), findsOneWidget);
|
|
},
|
|
);
|
|
|
|
group('scrollUntilVisible: scrolls to make unbuilt widget visible', () {
|
|
testWidgets(
|
|
'Vertical',
|
|
(WidgetTester tester) async {
|
|
await tester.pumpWidget(
|
|
MaterialApp(
|
|
home: Scaffold(
|
|
body: ListView.builder(
|
|
itemCount: 50,
|
|
shrinkWrap: true,
|
|
itemBuilder: (BuildContext context, int i) => ListTile(title: Text('Item $i')),
|
|
),
|
|
),
|
|
),
|
|
);
|
|
|
|
// Make sure widget isn't built yet.
|
|
expect(find.text('Item 45', skipOffstage: false), findsNothing);
|
|
|
|
await tester.scrollUntilVisible(
|
|
find.text('Item 45', skipOffstage: false),
|
|
100,
|
|
);
|
|
await tester.pumpAndSettle();
|
|
|
|
// Now the widget is on screen.
|
|
expect(find.text('Item 45'), findsOneWidget);
|
|
},
|
|
);
|
|
|
|
testWidgets(
|
|
'Horizontal',
|
|
(WidgetTester tester) async {
|
|
await tester.pumpWidget(
|
|
MaterialApp(
|
|
home: Scaffold(
|
|
body: ListView.builder(
|
|
itemCount: 50,
|
|
shrinkWrap: true,
|
|
scrollDirection: Axis.horizontal,
|
|
// ListTile does not support horizontal list
|
|
itemBuilder: (BuildContext context, int i) => Text('Item $i'),
|
|
),
|
|
),
|
|
),
|
|
);
|
|
|
|
// Make sure widget isn't built yet.
|
|
expect(find.text('Item 45', skipOffstage: false), findsNothing);
|
|
|
|
await tester.scrollUntilVisible(
|
|
find.text('Item 45', skipOffstage: false),
|
|
100,
|
|
);
|
|
await tester.pumpAndSettle();
|
|
|
|
// Now the widget is on screen.
|
|
expect(find.text('Item 45'), findsOneWidget);
|
|
},
|
|
);
|
|
|
|
testWidgets(
|
|
'Fail',
|
|
(WidgetTester tester) async {
|
|
await tester.pumpWidget(
|
|
MaterialApp(
|
|
home: Scaffold(
|
|
body: ListView.builder(
|
|
itemCount: 50,
|
|
shrinkWrap: true,
|
|
itemBuilder: (BuildContext context, int i) => ListTile(title: Text('Item $i')),
|
|
),
|
|
),
|
|
),
|
|
);
|
|
|
|
try {
|
|
await tester.scrollUntilVisible(
|
|
find.text('Item 55', skipOffstage: false),
|
|
100,
|
|
);
|
|
} on StateError catch (e) {
|
|
expect(e.message, 'No element');
|
|
}
|
|
},
|
|
);
|
|
|
|
testWidgets('Drag Until Visible', (WidgetTester tester) async {
|
|
// when there are two implicit [Scrollable], `scrollUntilVisible` is hard
|
|
// to use.
|
|
await tester.pumpWidget(
|
|
MaterialApp(
|
|
home: Scaffold(
|
|
body: Column(
|
|
children: <Widget>[
|
|
SizedBox(height: 200, child: ListView.builder(
|
|
key: const Key('listView-a'),
|
|
itemCount: 50,
|
|
shrinkWrap: true,
|
|
itemBuilder: (BuildContext context, int i) => ListTile(title: Text('Item a-$i')),
|
|
)),
|
|
const Divider(thickness: 5),
|
|
Expanded(child: ListView.builder(
|
|
key: const Key('listView-b'),
|
|
itemCount: 50,
|
|
shrinkWrap: true,
|
|
itemBuilder: (BuildContext context, int i) => ListTile(title: Text('Item b-$i')),
|
|
)),
|
|
],
|
|
),
|
|
),
|
|
),
|
|
);
|
|
await tester.pumpAndSettle();
|
|
expect(find.byType(Scrollable), findsNWidgets(2));
|
|
|
|
// Make sure widget isn't built yet.
|
|
expect(find.text('Item b-45', skipOffstage: false), findsNothing);
|
|
|
|
await tester.dragUntilVisible(
|
|
find.text('Item b-45', skipOffstage: false),
|
|
find.byKey(const ValueKey<String>('listView-b')),
|
|
const Offset(0, -100),
|
|
);
|
|
await tester.pumpAndSettle();
|
|
|
|
// Now the widget is on screen.
|
|
expect(find.text('Item b-45'), findsOneWidget);
|
|
});
|
|
});
|
|
|
|
testWidgets('platformDispatcher exposes the platformDispatcher from binding', (WidgetTester tester) async {
|
|
expect(tester.platformDispatcher, tester.binding.platformDispatcher);
|
|
});
|
|
|
|
testWidgets('view exposes the implicitView from platformDispatcher', (WidgetTester tester) async {
|
|
expect(tester.view, tester.platformDispatcher.implicitView);
|
|
});
|
|
|
|
testWidgets('viewOf finds a view when the view is implicit', (WidgetTester tester) async {
|
|
await tester.pumpWidget(const MaterialApp(
|
|
home: Center(
|
|
child: Text('Test'),
|
|
)
|
|
));
|
|
|
|
expect(() => tester.viewOf(find.text('Test')), isNot(throwsA(anything)));
|
|
expect(tester.viewOf(find.text('Test')), isA<TestFlutterView>());
|
|
});
|
|
|
|
group('SemanticsController', () {
|
|
group('find', () {
|
|
testWidgets('throws when there are no semantics', (WidgetTester tester) async {
|
|
await tester.pumpWidget(
|
|
const MaterialApp(
|
|
home: Scaffold(
|
|
body: Text('hello'),
|
|
),
|
|
),
|
|
);
|
|
|
|
expect(() => tester.semantics.find(find.text('hello')), throwsStateError);
|
|
}, semanticsEnabled: false);
|
|
|
|
testWidgets('throws when there are multiple results from the finder', (WidgetTester tester) async {
|
|
await tester.pumpWidget(
|
|
const MaterialApp(
|
|
home: Scaffold(
|
|
body: Row(
|
|
children: <Widget>[
|
|
Text('hello'),
|
|
Text('hello'),
|
|
],
|
|
),
|
|
),
|
|
),
|
|
);
|
|
|
|
expect(() => tester.semantics.find(find.text('hello')), throwsStateError);
|
|
});
|
|
|
|
testWidgets('Returns the correct SemanticsData', (WidgetTester tester) async {
|
|
await tester.pumpWidget(
|
|
MaterialApp(
|
|
home: Scaffold(
|
|
body: OutlinedButton(
|
|
onPressed: () { },
|
|
child: const Text('hello'),
|
|
),
|
|
),
|
|
),
|
|
);
|
|
|
|
final SemanticsNode node = tester.semantics.find(find.text('hello'));
|
|
final SemanticsData semantics = node.getSemanticsData();
|
|
expect(semantics.label, 'hello');
|
|
expect(semantics.hasAction(SemanticsAction.tap), true);
|
|
expect(semantics.hasFlag(SemanticsFlag.isButton), true);
|
|
});
|
|
|
|
testWidgets('Can enable semantics for tests via semanticsEnabled', (WidgetTester tester) async {
|
|
await tester.pumpWidget(
|
|
MaterialApp(
|
|
home: Scaffold(
|
|
body: OutlinedButton(
|
|
onPressed: () { },
|
|
child: const Text('hello'),
|
|
),
|
|
),
|
|
),
|
|
);
|
|
|
|
final SemanticsNode node = tester.semantics.find(find.text('hello'));
|
|
final SemanticsData semantics = node.getSemanticsData();
|
|
expect(semantics.label, 'hello');
|
|
expect(semantics.hasAction(SemanticsAction.tap), true);
|
|
expect(semantics.hasFlag(SemanticsFlag.isButton), true);
|
|
});
|
|
|
|
testWidgets('Returns merged SemanticsData', (WidgetTester tester) async {
|
|
const Key key = Key('test');
|
|
await tester.pumpWidget(
|
|
MaterialApp(
|
|
home: Scaffold(
|
|
body: Semantics(
|
|
label: 'A',
|
|
child: Semantics(
|
|
label: 'B',
|
|
child: Semantics(
|
|
key: key,
|
|
label: 'C',
|
|
child: Container(),
|
|
),
|
|
),
|
|
),
|
|
),
|
|
),
|
|
);
|
|
|
|
final SemanticsNode node = tester.semantics.find(find.byKey(key));
|
|
final SemanticsData semantics = node.getSemanticsData();
|
|
expect(semantics.label, 'A\nB\nC');
|
|
});
|
|
|
|
testWidgets('Does not return partial semantics', (WidgetTester tester) async {
|
|
final Key key = UniqueKey();
|
|
await tester.pumpWidget(
|
|
MaterialApp(
|
|
home: Scaffold(
|
|
body: MergeSemantics(
|
|
child: Semantics(
|
|
container: true,
|
|
label: 'A',
|
|
child: Semantics(
|
|
container: true,
|
|
key: key,
|
|
label: 'B',
|
|
child: Container(),
|
|
),
|
|
),
|
|
),
|
|
),
|
|
),
|
|
);
|
|
|
|
final SemanticsNode node = tester.semantics.find(find.byKey(key));
|
|
final SemanticsData semantics = node.getSemanticsData();
|
|
expect(semantics.label, 'A\nB');
|
|
});
|
|
});
|
|
|
|
group('simulatedTraversal', () {
|
|
final List<Matcher> fullTraversalMatchers = <Matcher>[
|
|
containsSemantics(isHeader: true, label: 'Semantics Test'),
|
|
containsSemantics(isTextField: true),
|
|
containsSemantics(label: 'Off Switch'),
|
|
containsSemantics(hasToggledState: true),
|
|
containsSemantics(label: 'On Switch'),
|
|
containsSemantics(hasToggledState: true, isToggled: true),
|
|
containsSemantics(label: "Multiline\nIt's a\nmultiline label!"),
|
|
containsSemantics(label: 'Slider'),
|
|
containsSemantics(isSlider: true, value: '50%'),
|
|
containsSemantics(label: 'Enabled Button'),
|
|
containsSemantics(isButton: true, label: 'Tap'),
|
|
containsSemantics(label: 'Disabled Button'),
|
|
containsSemantics(isButton: true, label: "Don't Tap"),
|
|
containsSemantics(label: 'Checked Radio'),
|
|
containsSemantics(hasCheckedState: true, isChecked: true),
|
|
containsSemantics(label: 'Unchecked Radio'),
|
|
containsSemantics(hasCheckedState: true, isChecked: false),
|
|
];
|
|
|
|
testWidgets('produces expected traversal', (WidgetTester tester) async {
|
|
await tester.pumpWidget(const MaterialApp(home: _SemanticsTestWidget()));
|
|
|
|
expect(
|
|
tester.semantics.simulatedAccessibilityTraversal(),
|
|
orderedEquals(fullTraversalMatchers));
|
|
});
|
|
|
|
testWidgets('starts traversal at semantics node for `start`', (WidgetTester tester) async {
|
|
await tester.pumpWidget(const MaterialApp(home: _SemanticsTestWidget()));
|
|
|
|
// We're expecting the traversal to start where the slider is.
|
|
final List<Matcher> expectedMatchers = <Matcher>[...fullTraversalMatchers]..removeRange(0, 8);
|
|
|
|
expect(
|
|
tester.semantics.simulatedAccessibilityTraversal(start: find.byType(Slider)),
|
|
orderedEquals(expectedMatchers));
|
|
});
|
|
|
|
testWidgets('throws StateError if `start` not found in traversal', (WidgetTester tester) async {
|
|
await tester.pumpWidget(const MaterialApp(home: _SemanticsTestWidget()));
|
|
|
|
// We look for a SingleChildScrollView since the view itself isn't
|
|
// important for accessibility, so it won't show up in the traversal
|
|
expect(
|
|
() => tester.semantics.simulatedAccessibilityTraversal(start: find.byType(SingleChildScrollView)),
|
|
throwsA(isA<StateError>()),
|
|
);
|
|
});
|
|
|
|
testWidgets('ends traversal at semantics node for `end`', (WidgetTester tester) async {
|
|
await tester.pumpWidget(const MaterialApp(home: _SemanticsTestWidget()));
|
|
|
|
// We're expecting the traversal to end where the slider is, inclusive.
|
|
final Iterable<Matcher> expectedMatchers = <Matcher>[...fullTraversalMatchers].getRange(0, 9);
|
|
|
|
expect(
|
|
tester.semantics.simulatedAccessibilityTraversal(end: find.byType(Slider)),
|
|
orderedEquals(expectedMatchers));
|
|
});
|
|
|
|
testWidgets('throws StateError if `end` not found in traversal', (WidgetTester tester) async {
|
|
await tester.pumpWidget(const MaterialApp(home: _SemanticsTestWidget()));
|
|
|
|
// We look for a SingleChildScrollView since the view itself isn't
|
|
// important for semantics, so it won't show up in the traversal
|
|
expect(
|
|
() => tester.semantics.simulatedAccessibilityTraversal(end: find.byType(SingleChildScrollView)),
|
|
throwsA(isA<StateError>()),
|
|
);
|
|
});
|
|
|
|
testWidgets('returns traversal between `start` and `end` if both are provided', (WidgetTester tester) async {
|
|
await tester.pumpWidget(const MaterialApp(home: _SemanticsTestWidget()));
|
|
|
|
// We're expecting the traversal to start at the text field and end at the slider.
|
|
final Iterable<Matcher> expectedMatchers = <Matcher>[...fullTraversalMatchers].getRange(1, 9);
|
|
|
|
expect(
|
|
tester.semantics.simulatedAccessibilityTraversal(
|
|
start: find.byType(TextField),
|
|
end: find.byType(Slider),
|
|
),
|
|
orderedEquals(expectedMatchers));
|
|
});
|
|
|
|
testWidgets('can do fuzzy traversal match with `containsAllInOrder`', (WidgetTester tester) async {
|
|
await tester.pumpWidget(const MaterialApp(home: _SemanticsTestWidget()));
|
|
|
|
// Grab a sample of the matchers to validate that not every matcher is
|
|
// needed to validate a traversal when using `containsAllInOrder`.
|
|
final Iterable<Matcher> expectedMatchers = <Matcher>[...fullTraversalMatchers]
|
|
..removeAt(0)
|
|
..removeLast()
|
|
..mapIndexed<Matcher?>((int i, Matcher element) => i.isEven ? element : null)
|
|
.whereNotNull();
|
|
|
|
expect(
|
|
tester.semantics.simulatedAccessibilityTraversal(),
|
|
containsAllInOrder(expectedMatchers));
|
|
});
|
|
});
|
|
});
|
|
}
|
|
|
|
class _SemanticsTestWidget extends StatelessWidget {
|
|
const _SemanticsTestWidget();
|
|
|
|
@override
|
|
Widget build(BuildContext context) {
|
|
return Scaffold(
|
|
appBar: AppBar(title: const Text('Semantics Test')),
|
|
body: SingleChildScrollView(
|
|
child: Column(
|
|
children: <Widget>[
|
|
const _SemanticsTestCard(
|
|
label: 'TextField',
|
|
widget: TextField(),
|
|
),
|
|
_SemanticsTestCard(
|
|
label: 'Off Switch',
|
|
widget: Switch(value: false, onChanged: (bool value) {}),
|
|
),
|
|
_SemanticsTestCard(
|
|
label: 'On Switch',
|
|
widget: Switch(value: true, onChanged: (bool value) {}),
|
|
),
|
|
const _SemanticsTestCard(
|
|
label: 'Multiline',
|
|
widget: Text("It's a\nmultiline label!", maxLines: 2),
|
|
),
|
|
_SemanticsTestCard(
|
|
label: 'Slider',
|
|
widget: Slider(value: .5, onChanged: (double value) {}),
|
|
),
|
|
_SemanticsTestCard(
|
|
label: 'Enabled Button',
|
|
widget: TextButton(onPressed: () {}, child: const Text('Tap')),
|
|
),
|
|
const _SemanticsTestCard(
|
|
label: 'Disabled Button',
|
|
widget: TextButton(onPressed: null, child: Text("Don't Tap")),
|
|
),
|
|
_SemanticsTestCard(
|
|
label: 'Checked Radio',
|
|
widget: Radio<String>(
|
|
value: 'checked',
|
|
groupValue: 'checked',
|
|
onChanged: (String? value) {},
|
|
),
|
|
),
|
|
_SemanticsTestCard(
|
|
label: 'Unchecked Radio',
|
|
widget: Radio<String>(
|
|
value: 'unchecked',
|
|
groupValue: 'checked',
|
|
onChanged: (String? value) {},
|
|
),
|
|
),
|
|
],
|
|
),
|
|
),
|
|
);
|
|
}
|
|
}
|
|
|
|
class _SemanticsTestCard extends StatelessWidget {
|
|
const _SemanticsTestCard({required this.label, required this.widget});
|
|
|
|
final String label;
|
|
final Widget widget;
|
|
|
|
@override
|
|
Widget build(BuildContext context) {
|
|
return Card(
|
|
child: ListTile(
|
|
title: Text(label),
|
|
trailing: SizedBox(width: 200, child: widget),
|
|
),
|
|
);
|
|
}
|
|
}
|