biz_xfj_cloud/test/sub_screen/customer_display_widget_test.dart

import 'package:flutter/material.dart';
import 'package:flutter_test/flutter_test.dart';
import 'package:get/get.dart';

import 'package:pj_supermarket_cloud/sub_screen/common/models/customer_display_models.dart';
import 'package:pj_supermarket_cloud/sub_screen/common/utils/customer_display_coordinator.dart';
import 'package:pj_supermarket_cloud/sub_screen/page/customer_display.dart';
import 'package:pj_supermarket_cloud/sub_screen/page/customer_preview.dart';

void main() {
  for (final size in [const Size(1920, 1080), const Size(1280, 720)]) {
    testWidgets('${size.width.toInt()}x${size.height.toInt()} 六种状态无布局异常',
        (tester) async {
      tester.view.physicalSize = size;
      tester.view.devicePixelRatio = 1;
      addTearDown(tester.view.resetPhysicalSize);
      addTearDown(tester.view.resetDevicePixelRatio);

      for (final scenario in CustomerDisplayScenario.values) {
        final coordinator = CustomerDisplayCoordinator(
          initialState: CustomerDisplayState.demo(scenario),
        );
        await tester.pumpWidget(
          MaterialApp(
            debugShowCheckedModeBanner: false,
            home: CustomerDisplayPage(coordinator: coordinator),
          ),
        );
        await tester.pump();

        expect(
          find.byKey(ValueKey('customer-scenario-${scenario.name}')),
          findsOneWidget,
        );
        expect(tester.takeException(), isNull);

        if (scenario == CustomerDisplayScenario.idle) {
          expect(find.text('等待添加商品'), findsOneWidget);
        } else {
          expect(find.text('张*明，您好'), findsOneWidget);
          expect(find.text('张小明'), findsNothing);
          expect(find.text('¥ 46.70'), findsOneWidget);
          expect(find.text('¥ 3.00'), findsOneWidget);
          expect(find.text('¥ 49.70'), findsOneWidget);
          expect(find.text('biz-xfj-customer-preview'), findsNothing);
        }

        await tester.pumpWidget(const SizedBox.shrink());
        coordinator.dispose();
      }
    });
  }

  testWidgets('悬浮按钮和系统返回请求都能退出全屏预览', (tester) async {
    await tester.pumpWidget(const _PreviewNavigationHarness());

    await tester.tap(find.text('打开预览'));
    await tester.pumpAndSettle();
    expect(find.text('退出预览'), findsOneWidget);

    await tester.tap(find.text('退出预览'));
    await tester.pumpAndSettle();
    expect(find.text('打开预览'), findsOneWidget);

    await tester.tap(find.text('打开预览'));
    await tester.pumpAndSettle();
    await tester.binding.handlePopRoute();
    await tester.pumpAndSettle();
    expect(find.text('打开预览'), findsOneWidget);
  });

  testWidgets('从内层终端设置打开预览后返回原设置状态', (tester) async {
    await tester.pumpWidget(const _NestedPreviewNavigationHarness());

    await tester.tap(find.text('商品核对'));
    await tester.tap(find.text('全屏预览'));
    await tester.pumpAndSettle();
    expect(find.text('退出预览'), findsOneWidget);

    await tester.tap(find.text('退出预览'));
    await tester.pumpAndSettle();
    expect(find.text('商品核对：已选中'), findsOneWidget);
  });
}

class _PreviewNavigationHarness extends StatelessWidget {
  const _PreviewNavigationHarness();

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      home: Builder(
        builder: (context) => Scaffold(
          body: Center(
            child: ElevatedButton(
              onPressed: () => Navigator.of(context).push<void>(
                MaterialPageRoute(
                  builder: (_) => const CustomerDisplayPreviewPage(
                    arguments: {'scenario': 'paying'},
                  ),
                ),
              ),
              child: const Text('打开预览'),
            ),
          ),
        ),
      ),
    );
  }
}

class _NestedPreviewNavigationHarness extends StatelessWidget {
  const _NestedPreviewNavigationHarness();

  @override
  Widget build(BuildContext context) {
    return GetMaterialApp(
      home: Navigator(
        onGenerateRoute: (_) => MaterialPageRoute<void>(
          builder: (innerContext) => _NestedSettingState(
            onPreview: () => Navigator.of(
              innerContext,
              rootNavigator: true,
            ).push<void>(
              GetPageRoute<void>(
                routeName: '/customer',
                settings: const RouteSettings(
                  name: '/customer',
                  arguments: {'scenario': 'review'},
                ),
                page: () => const CustomerDisplayPreviewPage(
                  arguments: {'scenario': 'review'},
                ),
                transition: Transition.noTransition,
                transitionDuration: Duration.zero,
              ),
            ),
          ),
        ),
      ),
    );
  }
}

class _NestedSettingState extends StatefulWidget {
  const _NestedSettingState({required this.onPreview});

  final VoidCallback onPreview;

  @override
  State<_NestedSettingState> createState() => _NestedSettingStateState();
}

class _NestedSettingStateState extends State<_NestedSettingState> {
  bool _selected = false;

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      body: Column(
        children: [
          TextButton(
            onPressed: () => setState(() => _selected = true),
            child: const Text('商品核对'),
          ),
          ElevatedButton(
            onPressed: widget.onPreview,
            child: const Text('全屏预览'),
          ),
          if (_selected) const Text('商品核对：已选中'),
        ],
      ),
    );
  }
}