anchor.diff:      await tester.pumpWidget(
         new MaterialApp(
           home: new MaterialApp(
  -          home: new Text('Home sweet home')
  -        )
  -      )
  +          home: new Text('Home sweet home'),
  +        ),
  +      ),
       );
   
       expect(find.text('Home sweet home'), findsOneWidget);
  
positive.code:               builder: (BuildContext context) {
                  ++buildCounter;
                  return new Container();
                }
              );
            }
          }
        )
      );
  
      expect(buildCounter, 0);
  
negative.code:     expect(focusNode.hasFocus, isTrue);
    });
  
    testWidgets('Can place app inside FocusScope', (WidgetTester tester) async {
      final FocusScopeNode focusScopeNode = new FocusScopeNode();
  
      await tester.pumpWidget(new FocusScope(
        autofocus: true,
        node: focusScopeNode,
        child: new MaterialApp(
          home: new Text('Home'),
        ),
      ));
  
      expect(find.text('Home'), findsOneWidget);
    });
  
    testWidgets('Can show grid without losing sync', (WidgetTester tester) async {
      await tester.pumpWidget(
        new MaterialApp(
          home: new StateMarker(),
        ),
      );
  
      final StateMarkerState state1 = tester.state(find.byType(StateMarker));
  