From feec13a1684b2f3b56e4702ef585d990f37eff56 Mon Sep 17 00:00:00 2001
From: cedvdb <cedvandenbosch@gmail.com>
Date: Fri, 10 Jun 2022 20:38:10 +0200
Subject: [PATCH] Remove duplicated key in _IconButtonM3 (#105577)

---
 .../flutter/lib/src/material/icon_button.dart    |  2 --
 .../flutter/test/material/icon_button_test.dart  | 16 ++++++++++++++++
 2 files changed, 16 insertions(+), 2 deletions(-)

diff --git a/packages/flutter/lib/src/material/icon_button.dart b/packages/flutter/lib/src/material/icon_button.dart
index 2e67fd182a5..ea8614d948f 100644
--- a/packages/flutter/lib/src/material/icon_button.dart
+++ b/packages/flutter/lib/src/material/icon_button.dart
@@ -497,7 +497,6 @@ class IconButton extends StatelessWidget {
         );
       }
       return _IconButtonM3(
-        key: key,
         style: adjustedStyle,
         onPressed: onPressed,
         autofocus: autofocus,
@@ -577,7 +576,6 @@ class IconButton extends StatelessWidget {
 
 class _IconButtonM3 extends ButtonStyleButton {
   const _IconButtonM3({
-    super.key,
     required super.onPressed,
     super.style,
     super.focusNode,
diff --git a/packages/flutter/test/material/icon_button_test.dart b/packages/flutter/test/material/icon_button_test.dart
index 9f1d6ccfd19..ae0354dd0af 100644
--- a/packages/flutter/test/material/icon_button_test.dart
+++ b/packages/flutter/test/material/icon_button_test.dart
@@ -28,6 +28,22 @@ void main() {
     mockOnPressedFunction = MockOnPressedFunction();
   });
 
+  testWidgets('test icon is findable by key', (WidgetTester tester) async {
+    const ValueKey<String> key = ValueKey<String>('icon-button');
+    await tester.pumpWidget(
+      wrap(
+        useMaterial3: true,
+        child: IconButton(
+          key: key,
+          onPressed: () {},
+          icon: const Icon(Icons.link),
+        ),
+      ),
+    );
+
+    expect(find.byKey(key), findsOneWidget);
+  });
+
   testWidgets('test default icon buttons are sized up to 48', (WidgetTester tester) async {
     final bool material3 = theme.useMaterial3;
     await tester.pumpWidget(