Flutter：在集成测试中无法单击列表视图项

Question

I have an app with a listview feature with provider pattern, and it has 5 items of data. Here is my snippet code

    ListView.builder(
      key: Key("listview_portfolio"),
      itemBuilder: (context, index) =>
          _itemListPortofolio(data.items[index], context),
      itemCount: data.items.length,
    )

...

    Widget _itemListPortofolio(Portfolio portfolio, BuildContext context) {
      return Container(
        key: ValueKey("item_list_portfolio"),
        margin: EdgeInsets.only(bottom: 16),
        child: InkWell(

When I run this code, it doesn't throw an error, but when I do the integration test, it throws an error when trying to click the item listview

'package:flutter_test/src/binding.dart': Failed assertion: line 802 pos 14: '_pendingExceptionDetails:= null'. A test overrode FlutterError,onError but either failed to return it to its original state. or had unexpected additional errors that it could not handle, Typically. this is caused by using expect() before restoring FlutterError.onError: flutter: dart.core-patch/errors_patch:dart 51.61 _AssertionError._doThrowNew

here's my integration test class

    Future<void> tapPortfolioItem({bool scrollUp = false}) async {
        await _tester.pumpAndSettle(Duration(seconds: 5));
        final Widget itemPortfolio =
            find.byKey(ValueKey("item_list_portfolio")).evaluate().last.widget;

        await _tester.tap(find.byWidget(itemPortfolio));
      }

Answer 1

try the code below:

final Finder instance = find.byKey(ValueKey("item_list_portifolio"));
final _itemListPortofolio test = _tester.widget(instance);
await _tester.tap(instance);
expect(anything, findsOneWidget);
expect(test.color, Colors.red);  

see also other way to use pumpAndSeatle() here .