mockNetworkImages<T> function

T mockNetworkImages<T>(
  1. T body(
      ),
    1. {Uint8List? imageBytes}
    )

    Utility method that allows you to execute a widget test when you pump a widget that contains an Image.network node in its tree.

    For example, if you have the following app:

    class FakeApp extends StatelessWidget {
      @override
      Widget build(BuildContext context) {
        return MaterialApp(
          home: Scaffold(
            body: Center(
              child: Image.network(
                'https://uploads-ssl.webflow.com/5ee12d8d7f840543bde883de/5eec278f49a4916759d679aa_vgv-wordmark-black.svg',
              ),
            ),
          ),
        );
      }
    }
    

    You can test it like this:

    void main() {
      testWidgets('can use mocktail for network images', (tester) async {
        await mockNetworkImages(() async {
          await tester.pumpWidget(FakeApp());
          expect(find.byType(Image), findsOneWidget);
        });
      });
    }
    

    Implementation

    T mockNetworkImages<T>(T Function() body, {Uint8List? imageBytes}) {
      return HttpOverrides.runZoned(
        body,
        createHttpClient: (_) => _createHttpClient(
          data: imageBytes ?? _transparentPixelPng,
        ),
      );
    }