Re-Staged: Fixing ContinuousRectangleBorder bottom radius (#45304)

packages/flutter/lib/src/painting/continuous_rectangle_border.dart

@@ -115,10 +115,10 @@ class ContinuousRectangleBorder extends ShapeBorder {
       ..cubicTo(left, top, left, top, left + tlRadiusY, top)
       ..lineTo(right - trRadiusX, top)
       ..cubicTo(right, top, right, top, right, top + trRadiusY)
-      ..lineTo(right, bottom - blRadiusX)
-      ..cubicTo(right, bottom, right, bottom, right - blRadiusY, bottom)
-      ..lineTo(left + brRadiusX, bottom)
-      ..cubicTo(left, bottom, left, bottom, left, bottom - brRadiusY)
+      ..lineTo(right, bottom - brRadiusX)
+      ..cubicTo(right, bottom, right, bottom, right - brRadiusY, bottom)
+      ..lineTo(left + blRadiusX, bottom)
+      ..cubicTo(left, bottom, left, bottom, left, bottom - blRadiusY)
       ..close();
   }
 

packages/flutter/test/painting/continous_rectangle_border_test.dart

@@ -78,11 +78,13 @@ void main() {
   testWidgets('Golden test varying radii', (WidgetTester tester) async {
     await tester.pumpWidget(RepaintBoundary(
       child: Material(
-        color: Colors.greenAccent[400],
+        color: Colors.green[100],
         shape: const ContinuousRectangleBorder(
           borderRadius: BorderRadius.only(
-            topLeft: Radius.circular(28.0),
-            bottomRight: Radius.circular(14.0),
+            topLeft: Radius.elliptical(100.0, 200.0),
+            topRight: Radius.circular(350.0),
+            bottomLeft: Radius.elliptical(2000.0, 100.0),
+            bottomRight: Radius.circular(700.0),
           ),
         ),
       ),
@@ -94,6 +96,91 @@ void main() {
       find.byType(RepaintBoundary),
       matchesGoldenFile('continuous_rectangle_border.golden_test_varying_radii.png'),
     );
+    // TODO(Piinks): Remove skip once web goldens are supported, https://github.com/flutter/flutter/issues/40297
+  }, skip: isBrowser);
+
+  testWidgets('Golden test topLeft radii', (WidgetTester tester) async {
+    await tester.pumpWidget(RepaintBoundary(
+      child: Material(
+        color: Colors.green[200],
+        shape: const ContinuousRectangleBorder(
+          borderRadius: BorderRadius.only(
+            topLeft: Radius.elliptical(100.0, 200.0),
+          ),
+        ),
+      ),
+    ));
+
+    await tester.pumpAndSettle();
+
+    await expectLater(
+      find.byType(RepaintBoundary),
+      matchesGoldenFile('continuous_rectangle_border.golden_test_topLeft_radii.png'),
+    );
+    // TODO(Piinks): Remove skip once web goldens are supported, https://github.com/flutter/flutter/issues/40297
+  }, skip: isBrowser);
+
+  testWidgets('Golden test topRight radii', (WidgetTester tester) async {
+    await tester.pumpWidget(RepaintBoundary(
+      child: Material(
+        color: Colors.green[300],
+        shape: const ContinuousRectangleBorder(
+          borderRadius: BorderRadius.only(
+            topRight: Radius.circular(350.0),
+          ),
+        ),
+      ),
+    ));
+
+    await tester.pumpAndSettle();
+
+    await expectLater(
+      find.byType(RepaintBoundary),
+      matchesGoldenFile('continuous_rectangle_border.golden_test_topRight_radii.png'),
+    );
+    // TODO(Piinks): Remove skip once web goldens are supported, https://github.com/flutter/flutter/issues/40297
+  }, skip: isBrowser);
+
+  testWidgets('Golden test bottomLeft radii', (WidgetTester tester) async {
+    await tester.pumpWidget(RepaintBoundary(
+      child: Material(
+        color: Colors.green[400],
+        shape: const ContinuousRectangleBorder(
+          borderRadius: BorderRadius.only(
+            bottomLeft: Radius.elliptical(2000.0, 100.0),
+          ),
+        ),
+      ),
+    ));
+
+    await tester.pumpAndSettle();
+
+    await expectLater(
+      find.byType(RepaintBoundary),
+      matchesGoldenFile('continuous_rectangle_border.golden_test_bottomLeft_radii.png'),
+    );
+    // TODO(Piinks): Remove skip once web goldens are supported, https://github.com/flutter/flutter/issues/40297
+  }, skip: isBrowser);
+
+  testWidgets('Golden test bottomRight radii', (WidgetTester tester) async {
+    await tester.pumpWidget(RepaintBoundary(
+      child: Material(
+        color: Colors.green[500],
+        shape: const ContinuousRectangleBorder(
+          borderRadius: BorderRadius.only(
+            bottomRight: Radius.circular(700.0),
+          ),
+        ),
+      ),
+    ));
+
+    await tester.pumpAndSettle();
+
+    await expectLater(
+      find.byType(RepaintBoundary),
+      matchesGoldenFile('continuous_rectangle_border.golden_test_bottomRight_radii.png'),
+    );
+    // TODO(Piinks): Remove skip once web goldens are supported, https://github.com/flutter/flutter/issues/40297
   }, skip: isBrowser);
 
   testWidgets('Golden test large radii', (WidgetTester tester) async {