106 lines
3.5 KiB
Dart
106 lines
3.5 KiB
Dart
// Author: fruit.com.cn
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// 职责：验证首页跨页动画的目标保留、连点打断和减少动画行为。
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import 'package:flutter/material.dart';
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import 'package:flutter_test/flutter_test.dart';
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import 'package:fruitshorts/pages/recommend/home_tab_motion_controller.dart';
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const _midpoint = Duration(milliseconds: 90);
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const _finish = Duration(milliseconds: 300);
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Widget _pager(HomeTabMotionController controller, List<int> accepted) =>
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MaterialApp(
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home: PageView(
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controller: controller,
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onPageChanged: (index) {
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if (controller.acceptsSelection(index)) accepted.add(index);
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},
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children: const [
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ColoredBox(color: Colors.black),
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ColoredBox(color: Colors.red),
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ColoredBox(color: Colors.grey),
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],
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),
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);
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void main() {
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testWidgets(
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'should_ignore_intermediate_page_when_clicking_across_two_pages',
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(tester) async {
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int? settled;
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final controller = HomeTabMotionController(
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onSettled: (index) => settled = index,
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);
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addTearDown(controller.dispose);
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final accepted = <int>[];
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await tester.pumpWidget(_pager(controller, accepted));
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final transition = controller.selectPage(2, reduceMotion: false);
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await tester.pump();
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await tester.pump(_midpoint);
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expect(controller.pagePosition, inExclusiveRange(0.0, 2.0));
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expect(controller.acceptsSelection(1), isFalse);
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expect(accepted, isNot(contains(1)));
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await tester.pump(_finish);
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await transition;
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expect(controller.pagePosition, 2);
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expect(settled, 2);
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expect(controller.acceptsSelection(1), isTrue);
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},
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);
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testWidgets('should_keep_last_target_when_clicks_interrupt_each_other', (
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tester,
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) async {
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int? settled;
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final controller = HomeTabMotionController(
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onSettled: (index) => settled = index,
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);
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addTearDown(controller.dispose);
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await tester.pumpWidget(_pager(controller, []));
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final first = controller.selectPage(2, reduceMotion: false);
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await tester.pump();
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await tester.pump(_midpoint);
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final last = controller.selectPage(0, reduceMotion: false);
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await tester.pump();
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expect(controller.acceptsSelection(2), isFalse);
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await tester.pump(_finish);
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await Future.wait([first, last]);
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expect(controller.pagePosition, 0);
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expect(settled, 0);
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});
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testWidgets('should_jump_to_target_when_reduced_motion_is_enabled', (
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tester,
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) async {
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int? settled;
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final controller = HomeTabMotionController(
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onSettled: (index) => settled = index,
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);
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addTearDown(controller.dispose);
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await tester.pumpWidget(_pager(controller, []));
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await controller.selectPage(2, reduceMotion: true);
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expect(controller.pagePosition, 2);
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expect(settled, 2);
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});
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testWidgets('should_release_target_when_user_drag_interrupts_animation', (
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tester,
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) async {
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final controller = HomeTabMotionController(onSettled: (_) {});
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addTearDown(controller.dispose);
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await tester.pumpWidget(_pager(controller, []));
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final transition = controller.selectPage(2, reduceMotion: false);
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await tester.pump();
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await tester.pump(_midpoint);
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final gesture = await tester.startGesture(
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tester.getCenter(find.byType(PageView)),
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);
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await gesture.moveBy(const Offset(60, 0));
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await tester.pump();
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await transition;
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expect(controller.acceptsSelection(0), isTrue);
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expect(controller.acceptsSelection(1), isTrue);
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await gesture.up();
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await tester.pumpAndSettle();
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});
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}
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