Cannot create widget test

[samheyman]

I am trying to add a simple test to verify the login page shows when opened (as per the example test available on Flutter).

I get the following error, caused by the state_widget static _StateWidgetState data call:

static _StateWidgetState of (BuildContext context) {
    return (context.inheritFromWidgetOfExactType(_StateDataWidget)
            as _StateDataWidget)
        .data;
  }

This is the error message:

══╡ EXCEPTION CAUGHT BY WIDGETS LIBRARY ╞═══════════════════════════════════════════════════════════
The following NoSuchMethodError was thrown building RootScreen(dirty, state:
_RootScreenState#941dc):
The getter 'data' was called on null.
Receiver: null
Tried calling: data

When the exception was thrown, this was the stack:
#0      Object.noSuchMethod (dart:core/runtime/libobject_patch.dart:50:5)
#1      StateWidget.of (package:mama_fit_club/state_widget.dart:28:10)

This is the simple test:

void main() {
  testWidgets('Test login page displayed', (WidgetTester tester) async {
    // Build our app and trigger a frame.
    await tester.pumpWidget(StateWidget(child: MyApp()));
    final loginRequestFinder = find.text("To continue please login with");
    expect(loginRequestFinder, findsOneWidget);
  });
}

Are you able to help? I need to add tests to my app.

Thanks!

[krolmic]

Hi @samheyman,

what about the code of MyApp and RootScreen? Is it the same as in this repository?

If the problem is still present, you could send me a link to your repository, so we can figure out why the test is not running.

You can contact me on twitter "@krol_mic" or via mail michael.krol@pm.me.

Best regards
Michael