Update `inherited_theme_test.dart`, `ink_paint_test.dart`,...

Update `inherited_theme_test.dart`, `ink_paint_test.dart`, `ink_splash_test.dart`, `opacity_test.dart` for Material 3 (#144013)

Updated unit tests for `Tooltip` to have M2 and M3 versions.

More info in #139076

packages/flutter/test/material/inherited_theme_test.dart

@@ -91,7 +91,7 @@ void main() {
     expect(containerColor(), isNot(primaryColor));
   });
 
-  testWidgets('PopupMenuTheme.wrap()', (WidgetTester tester) async {
+  testWidgets('Material2 - PopupMenuTheme.wrap()', (WidgetTester tester) async {
     const double menuFontSize = 24;
     const Color menuTextColor = Color(0xFF0000FF);
 
@@ -145,6 +145,58 @@ void main() {
     await tester.pumpAndSettle(); // menu route animation
   });
 
+  testWidgets('Material3 - PopupMenuTheme.wrap()', (WidgetTester tester) async {
+    const TextStyle textStyle = TextStyle(fontSize: 24.0, color: Color(0xFF0000FF));
+
+    Widget buildFrame() {
+      return MaterialApp(
+        home: Scaffold(
+          body: PopupMenuTheme(
+            data: const PopupMenuThemeData(
+              // The menu route's elevation, shape, and color are defined by the
+              // current context, so they're not affected by ThemeData.captureAll().
+              labelTextStyle: MaterialStatePropertyAll<TextStyle>(textStyle),
+            ),
+            child: Center(
+              child: PopupMenuButton<int>(
+                // The appearance of the menu items' text is defined by the
+                // PopupMenuTheme defined above. Popup menus use
+                // InheritedTheme.captureAll() by default.
+                child: const Text('show popupmenu'),
+                onSelected: (int result) { },
+                itemBuilder: (BuildContext context) {
+                  return const <PopupMenuEntry<int>>[
+                    PopupMenuItem<int>(value: 1, child: Text('One')),
+                    PopupMenuItem<int>(value: 2, child: Text('Two')),
+                  ];
+                },
+              ),
+            ),
+          ),
+        ),
+      );
+    }
+
+    TextStyle itemTextStyle(String text) {
+      return tester.widget<RichText>(
+        find.descendant(of: find.text(text), matching: find.byType(RichText)),
+      ).text.style!;
+    }
+
+    await tester.pumpWidget(buildFrame());
+
+    await tester.tap(find.text('show popupmenu'));
+    await tester.pumpAndSettle(); // menu route animation
+    expect(itemTextStyle('One').fontSize, textStyle.fontSize);
+    expect(itemTextStyle('One').color, textStyle.color);
+    expect(itemTextStyle('Two').fontSize, textStyle.fontSize);
+    expect(itemTextStyle('Two').color, textStyle.color);
+
+    // Dismiss the menu
+    await tester.tap(find.text('One'));
+    await tester.pumpAndSettle(); // menu route animation
+  });
+
   testWidgets('BannerTheme.wrap()', (WidgetTester tester) async {
     const Color bannerBackgroundColor = Color(0xFF0000FF);
     const double bannerFontSize = 48;

packages/flutter/test/material/ink_splash_test.dart

@@ -2,6 +2,7 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
+import 'package:flutter/foundation.dart';
 import 'package:flutter/material.dart';
 import 'package:flutter_test/flutter_test.dart';
 
@@ -58,7 +59,7 @@ void main() {
     expect(tester.takeException(), isNull);
   });
 
-  testWidgets('InkWell with NoSplash splashFactory paints nothing', (WidgetTester tester) async {
+  testWidgets('Material2 - InkWell with NoSplash splashFactory paints nothing', (WidgetTester tester) async {
     Widget buildFrame({ InteractiveInkFeatureFactory? splashFactory }) {
       return MaterialApp(
         theme: ThemeData(useMaterial3: false),
@@ -99,6 +100,46 @@ void main() {
     }
   });
 
+  testWidgets('Material3 - InkWell with NoSplash splashFactory paints nothing', (WidgetTester tester) async {
+    Widget buildFrame({ InteractiveInkFeatureFactory? splashFactory }) {
+      return MaterialApp(
+        home: Scaffold(
+          body: Center(
+            child: Material(
+              child: InkWell(
+                splashFactory: splashFactory,
+                onTap: () { },
+                child: const Text('test'),
+              ),
+            ),
+          ),
+        ),
+      );
+    }
+
+    // NoSplash.splashFactory, one rect is drawn for the highlight.
+    await tester.pumpWidget(buildFrame(splashFactory: NoSplash.splashFactory));
+    {
+      final TestGesture gesture = await tester.startGesture(tester.getCenter(find.text('test')));
+      final MaterialInkController material = Material.of(tester.element(find.text('test')));
+      await tester.pump(const Duration(milliseconds: 200));
+      expect(material, paintsExactlyCountTimes(#drawRect, 1));
+      await gesture.up();
+      await tester.pumpAndSettle();
+    }
+
+    // Default splashFactory (from Theme.of().splashFactory), two rects are drawn for the splash and highlight.
+    await tester.pumpWidget(buildFrame());
+    {
+      final TestGesture gesture = await tester.startGesture(tester.getCenter(find.text('test')));
+      final MaterialInkController material = Material.of(tester.element(find.text('test')));
+      await tester.pump(const Duration(milliseconds: 200));
+      expect(material, paintsExactlyCountTimes(#drawRect, (kIsWeb && isCanvasKit ? 1 : 2)));
+      await gesture.up();
+      await tester.pumpAndSettle();
+    }
+  }, skip: kIsWeb && !isCanvasKit); // https://github.com/flutter/flutter/issues/99933
+
   // Regression test for https://github.com/flutter/flutter/issues/136441.
   testWidgets('PageView item can dispose when widget with NoSplash.splashFactory is tapped', (WidgetTester tester) async {
     final PageController controller = PageController();

packages/flutter/test/widgets/opacity_test.dart

@@ -156,7 +156,6 @@ void main() {
   testWidgets('offset is correctly handled in Opacity', (WidgetTester tester) async {
     await tester.pumpWidget(
       MaterialApp(
-        theme: ThemeData(useMaterial3: false),
         home: Scaffold(
           body: SingleChildScrollView(
             child: RepaintBoundary(
@@ -168,8 +167,8 @@ void main() {
                     child: Padding(
                       padding: const EdgeInsets.all(5.0),
                       child: Container(
-                          color: Colors.blue,
-                          height: 50,
+                        color: Colors.blue,
+                        height: 50,
                       ),
                     ),
                   );