User view - Unit testing Flutter GraphQL

user_view.dart

class UserView extends HookWidget {
  final String _userId;

  UserView(this._userId);

  @override
  Widget build(BuildContext context) {
    final query = useQuery$UserById(
      Options$Query$UserById(
        variables: Variables$Query$UserById(
          id: _userId,
        ),
      ),
    );
    final result = query.result;
    final internalResult = result.parsedData?.getUser;

    Widget child;
    if (result.isLoading) {
      child = const CircularProgressIndicator();
    } else if (result.hasException || internalResult == null) {
      child = const Text('There was an issue loading your profile');
    } else {
      child = _UserDisplay(internalResult.email, internalResult.displayName);
    }

    return Scaffold(
      appBar: AppBar(
        title: Text('Profile'),
      ),
      body: Center(
        child: child,
      ),
    );
  }
}

class _UserDisplay extends StatelessWidget {
  final String _email;
  final String? _displayName;

  const _UserDisplay(this._email, this._displayName);

  @override
  Widget build(BuildContext context) {
    return Column(
      children: [
        if (_displayName != null) Text(_displayName!),
        Text(_email),
      ],
    );
  }
}