Fix SafeArea and SliverSafeArea debug flag properties (#63455)

packages/flutter/lib/src/widgets/safe_area.dart

@@ -125,9 +125,9 @@ class SafeArea extends StatelessWidget {
   void debugFillProperties(DiagnosticPropertiesBuilder properties) {
     super.debugFillProperties(properties);
     properties.add(FlagProperty('left', value: left, ifTrue: 'avoid left padding'));
-    properties.add(FlagProperty('top', value: left, ifTrue: 'avoid top padding'));
-    properties.add(FlagProperty('right', value: left, ifTrue: 'avoid right padding'));
-    properties.add(FlagProperty('bottom', value: left, ifTrue: 'avoid bottom padding'));
+    properties.add(FlagProperty('top', value: top, ifTrue: 'avoid top padding'));
+    properties.add(FlagProperty('right', value: right, ifTrue: 'avoid right padding'));
+    properties.add(FlagProperty('bottom', value: bottom, ifTrue: 'avoid bottom padding'));
   }
 }
 
@@ -219,8 +219,8 @@ class SliverSafeArea extends StatelessWidget {
   void debugFillProperties(DiagnosticPropertiesBuilder properties) {
     super.debugFillProperties(properties);
     properties.add(FlagProperty('left', value: left, ifTrue: 'avoid left padding'));
-    properties.add(FlagProperty('top', value: left, ifTrue: 'avoid top padding'));
-    properties.add(FlagProperty('right', value: left, ifTrue: 'avoid right padding'));
-    properties.add(FlagProperty('bottom', value: left, ifTrue: 'avoid bottom padding'));
+    properties.add(FlagProperty('top', value: top, ifTrue: 'avoid top padding'));
+    properties.add(FlagProperty('right', value: right, ifTrue: 'avoid right padding'));
+    properties.add(FlagProperty('bottom', value: bottom, ifTrue: 'avoid bottom padding'));
   }
 }

packages/flutter/test/widgets/safe_area_test.dart

@@ -89,6 +89,22 @@ void main() {
       expect(tester.getBottomRight(find.byType(Placeholder)), const Offset(800.0, 600.0));
     });
 
+    testWidgets('SafeArea - properties', (WidgetTester tester) async {
+      final SafeArea child = SafeArea(
+        left: true,
+        right: false,
+        bottom: false,
+        child: Container()
+      );
+      final DiagnosticPropertiesBuilder properties = DiagnosticPropertiesBuilder();
+      child.debugFillProperties(properties);
+
+      expect(properties.properties.any((DiagnosticsNode n) => n is FlagProperty && n.toString() == 'avoid left padding'), true);
+      expect(properties.properties.any((DiagnosticsNode n) => n is FlagProperty && n.toString() == 'avoid right padding'), false);
+      expect(properties.properties.any((DiagnosticsNode n) => n is FlagProperty && n.toString() == 'avoid top padding'), true);
+      expect(properties.properties.any((DiagnosticsNode n) => n is FlagProperty && n.toString() == 'avoid bottom padding'), false);
+    });
+
     group('SafeArea maintains bottom viewPadding when specified for consumed bottom padding', () {
       Widget boilerplate(Widget child) {
         return Localizations(
@@ -300,4 +316,20 @@ void main() {
       ]);
     });
   });
+
+  testWidgets('SliverSafeArea - properties', (WidgetTester tester) async {
+    const SliverSafeArea child = SliverSafeArea(
+      left: true,
+      right: false,
+      bottom: false,
+      sliver: SliverToBoxAdapter(child: SizedBox(width: 800.0, height: 100.0, child: Text('padded'))),
+    );
+    final DiagnosticPropertiesBuilder properties = DiagnosticPropertiesBuilder();
+    child.debugFillProperties(properties);
+
+    expect(properties.properties.any((DiagnosticsNode n) => n is FlagProperty && n.toString() == 'avoid left padding'), true);
+    expect(properties.properties.any((DiagnosticsNode n) => n is FlagProperty && n.toString() == 'avoid right padding'), false);
+    expect(properties.properties.any((DiagnosticsNode n) => n is FlagProperty && n.toString() == 'avoid top padding'), true);
+    expect(properties.properties.any((DiagnosticsNode n) => n is FlagProperty && n.toString() == 'avoid bottom padding'), false);
+  });
 }