title: How to test Flutter widgets on different screen sizes?
body: <p>I have a Flutter widget which shows extra data depending on the screen size. Does anyone know a way of testing this widget on multiple different screen sizes?</p>
  
  <p>I've had a look through the <a href="https://github.com/flutter/flutter/blob/master/packages/flutter_test/lib/src/widget_tester.dart" rel="noreferrer">widget_tester</a> source code but can't find anything.</p>