diff --git a/ci/builders/linux_web_engine.json b/ci/builders/linux_web_engine.json
index a47980e6dd244..f4159952eafc2 100644
--- a/ci/builders/linux_web_engine.json
+++ b/ci/builders/linux_web_engine.json
@@ -70,7 +70,7 @@
       }
     },
     {
-      "name": "web_tests/test_bundles/dart2js-html-engine",
+      "name": "web_tests/test_bundles/dart2js-html-html",
       "drone_dimensions": [
         "device_type=none",
         "os=Linux"
@@ -78,11 +78,11 @@
       "generators": {
         "tasks": [
           {
-            "name": "compile bundle dart2js-html-engine",
+            "name": "compile bundle dart2js-html-html",
             "parameters": [
               "test",
               "--compile",
-              "--bundle=dart2js-html-engine"
+              "--bundle=dart2js-html-html"
             ],
             "scripts": [
               "flutter/lib/web_ui/dev/felt"
@@ -92,7 +92,7 @@
       }
     },
     {
-      "name": "web_tests/test_bundles/dart2js-html-html",
+      "name": "web_tests/test_bundles/dart2js-html-ui",
       "drone_dimensions": [
         "device_type=none",
         "os=Linux"
@@ -100,11 +100,11 @@
       "generators": {
         "tasks": [
           {
-            "name": "compile bundle dart2js-html-html",
+            "name": "compile bundle dart2js-html-ui",
             "parameters": [
               "test",
               "--compile",
-              "--bundle=dart2js-html-html"
+              "--bundle=dart2js-html-ui"
             ],
             "scripts": [
               "flutter/lib/web_ui/dev/felt"
@@ -114,7 +114,7 @@
       }
     },
     {
-      "name": "web_tests/test_bundles/dart2js-html-ui",
+      "name": "web_tests/test_bundles/dart2js-canvaskit-engine",
       "drone_dimensions": [
         "device_type=none",
         "os=Linux"
@@ -122,11 +122,11 @@
       "generators": {
         "tasks": [
           {
-            "name": "compile bundle dart2js-html-ui",
+            "name": "compile bundle dart2js-canvaskit-engine",
             "parameters": [
               "test",
               "--compile",
-              "--bundle=dart2js-html-ui"
+              "--bundle=dart2js-canvaskit-engine"
             ],
             "scripts": [
               "flutter/lib/web_ui/dev/felt"
@@ -180,7 +180,7 @@
       }
     },
     {
-      "name": "web_tests/test_bundles/dart2wasm-html-engine",
+      "name": "web_tests/test_bundles/dart2wasm-canvaskit-engine",
       "drone_dimensions": [
         "device_type=none",
         "os=Linux"
@@ -188,11 +188,11 @@
       "generators": {
         "tasks": [
           {
-            "name": "compile bundle dart2wasm-html-engine",
+            "name": "compile bundle dart2wasm-canvaskit-engine",
             "parameters": [
               "test",
               "--compile",
-              "--bundle=dart2wasm-html-engine"
+              "--bundle=dart2wasm-canvaskit-engine"
             ],
             "scripts": [
               "flutter/lib/web_ui/dev/felt"
@@ -260,12 +260,12 @@
       },
       "dependencies": [
         "web_tests/artifacts",
-        "web_tests/test_bundles/dart2js-html-engine",
         "web_tests/test_bundles/dart2js-html-html",
         "web_tests/test_bundles/dart2js-html-ui",
+        "web_tests/test_bundles/dart2js-canvaskit-engine",
         "web_tests/test_bundles/dart2js-canvaskit-canvaskit",
         "web_tests/test_bundles/dart2js-canvaskit-ui",
-        "web_tests/test_bundles/dart2wasm-html-engine",
+        "web_tests/test_bundles/dart2wasm-canvaskit-engine",
         "web_tests/test_bundles/dart2wasm-skwasm-ui",
         "web_tests/test_bundles/fallbacks"
       ],
@@ -281,29 +281,29 @@
       ],
       "tasks": [
         {
-          "name": "run suite chrome-dart2js-html-engine",
+          "name": "run suite chrome-dart2js-html-html",
           "parameters": [
             "test",
             "--run",
-            "--suite=chrome-dart2js-html-engine"
+            "--suite=chrome-dart2js-html-html"
           ],
           "script": "flutter/lib/web_ui/dev/felt"
         },
         {
-          "name": "run suite chrome-dart2js-html-html",
+          "name": "run suite chrome-dart2js-html-ui",
           "parameters": [
             "test",
             "--run",
-            "--suite=chrome-dart2js-html-html"
+            "--suite=chrome-dart2js-html-ui"
           ],
           "script": "flutter/lib/web_ui/dev/felt"
         },
         {
-          "name": "run suite chrome-dart2js-html-ui",
+          "name": "run suite chrome-dart2js-canvaskit-engine",
           "parameters": [
             "test",
             "--run",
-            "--suite=chrome-dart2js-html-ui"
+            "--suite=chrome-dart2js-canvaskit-engine"
           ],
           "script": "flutter/lib/web_ui/dev/felt"
         },
@@ -344,11 +344,11 @@
           "script": "flutter/lib/web_ui/dev/felt"
         },
         {
-          "name": "run suite chrome-dart2wasm-html-engine",
+          "name": "run suite chrome-dart2wasm-canvaskit-engine",
           "parameters": [
             "test",
             "--run",
-            "--suite=chrome-dart2wasm-html-engine"
+            "--suite=chrome-dart2wasm-canvaskit-engine"
           ],
           "script": "flutter/lib/web_ui/dev/felt"
         },
@@ -412,9 +412,9 @@
       },
       "dependencies": [
         "web_tests/artifacts",
-        "web_tests/test_bundles/dart2js-html-engine",
         "web_tests/test_bundles/dart2js-html-html",
         "web_tests/test_bundles/dart2js-html-ui",
+        "web_tests/test_bundles/dart2js-canvaskit-engine",
         "web_tests/test_bundles/dart2js-canvaskit-canvaskit",
         "web_tests/test_bundles/dart2js-canvaskit-ui",
         "web_tests/test_bundles/fallbacks"
@@ -431,29 +431,29 @@
       ],
       "tasks": [
         {
-          "name": "run suite firefox-dart2js-html-engine",
+          "name": "run suite firefox-dart2js-html-html",
           "parameters": [
             "test",
             "--run",
-            "--suite=firefox-dart2js-html-engine"
+            "--suite=firefox-dart2js-html-html"
           ],
           "script": "flutter/lib/web_ui/dev/felt"
         },
         {
-          "name": "run suite firefox-dart2js-html-html",
+          "name": "run suite firefox-dart2js-html-ui",
           "parameters": [
             "test",
             "--run",
-            "--suite=firefox-dart2js-html-html"
+            "--suite=firefox-dart2js-html-ui"
           ],
           "script": "flutter/lib/web_ui/dev/felt"
         },
         {
-          "name": "run suite firefox-dart2js-html-ui",
+          "name": "run suite firefox-dart2js-canvaskit-engine",
           "parameters": [
             "test",
             "--run",
-            "--suite=firefox-dart2js-html-ui"
+            "--suite=firefox-dart2js-canvaskit-engine"
           ],
           "script": "flutter/lib/web_ui/dev/felt"
         },
@@ -500,9 +500,9 @@
       },
       "dependencies": [
         "web_tests/artifacts",
-        "web_tests/test_bundles/dart2js-html-engine",
         "web_tests/test_bundles/dart2js-html-html",
         "web_tests/test_bundles/dart2js-html-ui",
+        "web_tests/test_bundles/dart2js-canvaskit-engine",
         "web_tests/test_bundles/dart2js-canvaskit-canvaskit",
         "web_tests/test_bundles/dart2js-canvaskit-ui",
         "web_tests/test_bundles/fallbacks"
@@ -515,29 +515,29 @@
       ],
       "tasks": [
         {
-          "name": "run suite safari-dart2js-html-engine",
+          "name": "run suite safari-dart2js-html-html",
           "parameters": [
             "test",
             "--run",
-            "--suite=safari-dart2js-html-engine"
+            "--suite=safari-dart2js-html-html"
           ],
           "script": "flutter/lib/web_ui/dev/felt"
         },
         {
-          "name": "run suite safari-dart2js-html-html",
+          "name": "run suite safari-dart2js-html-ui",
           "parameters": [
             "test",
             "--run",
-            "--suite=safari-dart2js-html-html"
+            "--suite=safari-dart2js-html-ui"
           ],
           "script": "flutter/lib/web_ui/dev/felt"
         },
         {
-          "name": "run suite safari-dart2js-html-ui",
+          "name": "run suite safari-dart2js-canvaskit-engine",
           "parameters": [
             "test",
             "--run",
-            "--suite=safari-dart2js-html-ui"
+            "--suite=safari-dart2js-canvaskit-engine"
           ],
           "script": "flutter/lib/web_ui/dev/felt"
         },
@@ -583,12 +583,12 @@
       },
       "dependencies": [
         "web_tests/artifacts",
-        "web_tests/test_bundles/dart2js-html-engine",
         "web_tests/test_bundles/dart2js-html-html",
         "web_tests/test_bundles/dart2js-html-ui",
+        "web_tests/test_bundles/dart2js-canvaskit-engine",
         "web_tests/test_bundles/dart2js-canvaskit-canvaskit",
         "web_tests/test_bundles/dart2js-canvaskit-ui",
-        "web_tests/test_bundles/dart2wasm-html-engine",
+        "web_tests/test_bundles/dart2wasm-canvaskit-engine",
         "web_tests/test_bundles/dart2wasm-skwasm-ui",
         "web_tests/test_bundles/fallbacks"
       ],
@@ -604,29 +604,29 @@
       ],
       "tasks": [
         {
-          "name": "run suite chrome-dart2js-html-engine",
+          "name": "run suite chrome-dart2js-html-html",
           "parameters": [
             "test",
             "--run",
-            "--suite=chrome-dart2js-html-engine"
+            "--suite=chrome-dart2js-html-html"
           ],
           "script": "flutter/lib/web_ui/dev/felt"
         },
         {
-          "name": "run suite chrome-dart2js-html-html",
+          "name": "run suite chrome-dart2js-html-ui",
           "parameters": [
             "test",
             "--run",
-            "--suite=chrome-dart2js-html-html"
+            "--suite=chrome-dart2js-html-ui"
           ],
           "script": "flutter/lib/web_ui/dev/felt"
         },
         {
-          "name": "run suite chrome-dart2js-html-ui",
+          "name": "run suite chrome-dart2js-canvaskit-engine",
           "parameters": [
             "test",
             "--run",
-            "--suite=chrome-dart2js-html-ui"
+            "--suite=chrome-dart2js-canvaskit-engine"
           ],
           "script": "flutter/lib/web_ui/dev/felt"
         },
@@ -667,11 +667,11 @@
           "script": "flutter/lib/web_ui/dev/felt"
         },
         {
-          "name": "run suite chrome-dart2wasm-html-engine",
+          "name": "run suite chrome-dart2wasm-canvaskit-engine",
           "parameters": [
             "test",
             "--run",
-            "--suite=chrome-dart2wasm-html-engine"
+            "--suite=chrome-dart2wasm-canvaskit-engine"
           ],
           "script": "flutter/lib/web_ui/dev/felt"
         },
diff --git a/lib/web_ui/dev/test_platform.dart b/lib/web_ui/dev/test_platform.dart
index adde6032593c1..d1e4396648ee7 100644
--- a/lib/web_ui/dev/test_platform.dart
+++ b/lib/web_ui/dev/test_platform.dart
@@ -89,7 +89,7 @@ class BrowserPlatform extends PlatformPlugin {
         .add(_createSourceHandler())
 
         // Serves files from the root of web_ui. Some tests download assets that are embedded
-        // directly in the test folder, such as test/engine/image/sample_image1.png etc
+        // directly in the test folder, such as test/html/image/sample_image1.png etc
         .add(createStaticHandler(env.environment.webUiRootDir.path))
 
         // Serves absolute package URLs (i.e. not /packages/* but /Users/user/*/hosted/pub.dartlang.org/*).
diff --git a/lib/web_ui/test/canvaskit/semantics_test.dart b/lib/web_ui/test/canvaskit/semantics_test.dart
deleted file mode 100644
index ce4b8598de419..0000000000000
--- a/lib/web_ui/test/canvaskit/semantics_test.dart
+++ /dev/null
@@ -1,29 +0,0 @@
-// Copyright 2013 The Flutter Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-@TestOn('chrome || safari || firefox')
-library;
-
-import 'dart:async';
-
-import 'package:test/bootstrap/browser.dart';
-import 'package:test/test.dart';
-
-import '../engine/semantics/semantics_test.dart';
-import 'common.dart';
-
-void main() {
-  internalBootstrapBrowserTest(() => testMain);
-}
-
-// Run the same semantics tests in CanvasKit mode because as of today we do not
-// yet share platform view logic with the HTML renderer, which affects
-// semantics.
-Future<void> testMain() async {
-  group('CanvasKit semantics', () {
-    setUpCanvasKitTest(withImplicitView: true);
-
-    runSemanticsTests();
-  });
-}
diff --git a/lib/web_ui/test/common/test_initialization.dart b/lib/web_ui/test/common/test_initialization.dart
index 2f0c943462151..a766291c0263d 100644
--- a/lib/web_ui/test/common/test_initialization.dart
+++ b/lib/web_ui/test/common/test_initialization.dart
@@ -51,6 +51,23 @@ void setUpUnitTests({
   });
 }
 
+void setUpImplicitView() {
+  late engine.EngineFlutterWindow myWindow;
+
+  final engine.EnginePlatformDispatcher dispatcher = engine.EnginePlatformDispatcher.instance;
+
+  setUp(() {
+    myWindow = engine.EngineFlutterView.implicit(dispatcher, null);
+    dispatcher.viewManager.registerView(myWindow);
+  });
+
+  tearDown(() async {
+    dispatcher.viewManager.unregisterView(myWindow.viewId);
+    await myWindow.resetHistory();
+    myWindow.dispose();
+  });
+}
+
 Future<void> bootstrapAndRunApp({bool withImplicitView = false}) async {
   final Completer<void> completer = Completer<void>();
   await ui_web.bootstrapEngine(runApp: () => completer.complete());
diff --git a/lib/web_ui/test/engine/clipboard_test.dart b/lib/web_ui/test/engine/clipboard_test.dart
index bad7902156ca6..61357850cc635 100644
--- a/lib/web_ui/test/engine/clipboard_test.dart
+++ b/lib/web_ui/test/engine/clipboard_test.dart
@@ -16,7 +16,7 @@ void main() {
 }
 
 Future<void> testMain() async {
-  setUpUnitTests();
+  setUpImplicitView();
   group('message handler', () {
     const String testText = 'test text';
 
diff --git a/lib/web_ui/test/engine/composition_test.dart b/lib/web_ui/test/engine/composition_test.dart
index 4785ed9acd14e..57451e0751613 100644
--- a/lib/web_ui/test/engine/composition_test.dart
+++ b/lib/web_ui/test/engine/composition_test.dart
@@ -51,7 +51,7 @@ GloballyPositionedTextEditingStrategy _enableEditingStrategy({
 }
 
 Future<void> testMain() async {
-  await bootstrapAndRunApp(withImplicitView: true);
+  setUpImplicitView();
 
   const String fakeComposingText = 'ImComposingText';
 
@@ -323,6 +323,14 @@ Future<void> testMain() async {
       _inputElement.dispatchEvent(createDomCompositionEvent(
           _MockWithCompositionAwareMixin._kCompositionUpdate,
           <Object?, Object?>{ 'data': newComposingText }));
+      // On Chrome and Safari, a `compositionupdate` event automatically
+      // triggers a `selectionchange` event, which leads to triggering
+      // `DefaultTextEditingStrategy.handleChange`.
+      //
+      // But in Firefox, `selectionchange` event is not triggered, so we need to
+      // manually dispatch an `input` event to trigger
+      // `DefaultTextEditingStrategy.handleChange`.
+      _inputElement.dispatchEvent(createDomInputEvent('input'));
 
       await containExpect;
     });
diff --git a/lib/web_ui/test/engine/dom_http_fetch_test.dart b/lib/web_ui/test/engine/dom_http_fetch_test.dart
index fbe48969d4890..ac2bf7ac33dda 100644
--- a/lib/web_ui/test/engine/dom_http_fetch_test.dart
+++ b/lib/web_ui/test/engine/dom_http_fetch_test.dart
@@ -9,15 +9,11 @@ import 'package:test/bootstrap/browser.dart';
 import 'package:test/test.dart';
 import 'package:ui/src/engine.dart';
 
-import '../common/test_initialization.dart';
-
 void main() {
   internalBootstrapBrowserTest(() => testMain);
 }
 
 Future<void> testMain() async {
-  await bootstrapAndRunApp();
-
   // Test successful HTTP roundtrips where the server returns a happy status
   // code and a payload.
   await _testSuccessfulPayloads();
diff --git a/lib/web_ui/test/engine/history_test.dart b/lib/web_ui/test/engine/history_test.dart
index 91b99f36cfeb5..4d3e80fa9955d 100644
--- a/lib/web_ui/test/engine/history_test.dart
+++ b/lib/web_ui/test/engine/history_test.dart
@@ -37,9 +37,7 @@ void main() {
 }
 
 void testMain() {
-  setUpAll(() async {
-    await bootstrapAndRunApp(withImplicitView: true);
-  });
+  setUpImplicitView();
 
   test('createHistoryForExistingState', () {
     TestUrlStrategy strategy;
diff --git a/lib/web_ui/test/engine/image_format_detector_test.dart b/lib/web_ui/test/engine/image_format_detector_test.dart
index 3781dac016aef..f2aac31955147 100644
--- a/lib/web_ui/test/engine/image_format_detector_test.dart
+++ b/lib/web_ui/test/engine/image_format_detector_test.dart
@@ -17,7 +17,7 @@ void main() {
 List<String>? testFiles;
 
 Future<void> testMain() async {
-  setUpUnitTests();
+  setUpImplicitView();
 
   Future<List<String>> createTestFiles() async {
     final HttpFetchResponse listingResponse = await httpFetch('/test_images/');
diff --git a/lib/web_ui/test/engine/image_to_byte_data_test.dart b/lib/web_ui/test/engine/image_to_byte_data_test.dart
index 306e50c560ec2..13c61ccddf9c8 100644
--- a/lib/web_ui/test/engine/image_to_byte_data_test.dart
+++ b/lib/web_ui/test/engine/image_to_byte_data_test.dart
@@ -16,7 +16,7 @@ void main() {
 }
 
 Future<void> testMain() async {
-  setUpUnitTests();
+  setUpImplicitView();
 
   Future<Image> createTestImageByColor(Color color) async {
     final EnginePictureRecorder recorder = EnginePictureRecorder();
diff --git a/lib/web_ui/test/engine/initialization_test.dart b/lib/web_ui/test/engine/initialization_test.dart
index 6f889fce724ed..2fbb2f76e15f6 100644
--- a/lib/web_ui/test/engine/initialization_test.dart
+++ b/lib/web_ui/test/engine/initialization_test.dart
@@ -52,7 +52,8 @@ void testMain() {
     expect(engineInitializer, isNotNull);
     expect(js_util.hasProperty(engineInitializer!, 'initializeEngine'), isTrue, reason: 'Missing FlutterEngineInitializer method: initializeEngine.');
     expect(js_util.hasProperty(engineInitializer!, 'autoStart'), isTrue, reason: 'Missing FlutterEngineInitializer method: autoStart.');
-  });
+    // https://github.com/flutter/flutter/issues/160096
+  }, skip: ui_web.browser.isFirefox);
 
   test('bootstrapEngine does auto-start when _flutter.loader.didCreateEngineInitializer does not exist', () async {
     loader = null;
@@ -81,7 +82,8 @@ void testMain() {
     // After starting the engine, the meta-generator tag should be on the page
     final DomElement? meta = domDocument.querySelector('meta[name=generator][content=Flutter]');
     expect(meta, isNotNull, reason: 'The generator meta-tag should be added when Flutter initializes its UI.');
-  });
+    // https://github.com/flutter/flutter/issues/160096
+  }, skip: ui_web.browser.isFirefox);
 
   // We cannot test anymore, because by now the engine has registered some stuff that can't be rewound back.
   // Like the `ext.flutter.disassemble` developer extension.
diff --git a/lib/web_ui/test/engine/navigation_test.dart b/lib/web_ui/test/engine/navigation_test.dart
index e3386e6c21c8e..d1d93fc7dc14d 100644
--- a/lib/web_ui/test/engine/navigation_test.dart
+++ b/lib/web_ui/test/engine/navigation_test.dart
@@ -43,19 +43,13 @@ void testMain() {
   group('with implicit view', () {
     late TestUrlStrategy strategy;
 
-    setUpAll(() async {
-      await bootstrapAndRunApp(withImplicitView: true);
-    });
+    setUpImplicitView();
 
     setUp(() async {
       strategy = TestUrlStrategy();
       await implicitView.debugInitializeHistory(strategy, useSingle: true);
     });
 
-    tearDown(() async {
-      await implicitView.resetHistory();
-    });
-
     test('Tracks pushed, replaced and popped routes', () async {
       final Completer<void> completer = Completer<void>();
       ui.PlatformDispatcher.instance.sendPlatformMessage(
diff --git a/lib/web_ui/test/engine/platform_dispatcher/platform_dispatcher_test.dart b/lib/web_ui/test/engine/platform_dispatcher/platform_dispatcher_test.dart
index c9f9e69f5b4ad..ea2e9b7037c0d 100644
--- a/lib/web_ui/test/engine/platform_dispatcher/platform_dispatcher_test.dart
+++ b/lib/web_ui/test/engine/platform_dispatcher/platform_dispatcher_test.dart
@@ -9,6 +9,7 @@ import 'package:test/bootstrap/browser.dart';
 import 'package:test/test.dart';
 import 'package:ui/src/engine.dart';
 import 'package:ui/ui.dart' as ui;
+import 'package:ui/ui_web/src/ui_web.dart' as ui_web;
 
 import '../../common/test_initialization.dart';
 
@@ -17,13 +18,13 @@ void main() {
 }
 
 void testMain() {
-  setUpAll(() async {
-    await bootstrapAndRunApp(withImplicitView: true);
-  });
-
   group('PlatformDispatcher', () {
     late EnginePlatformDispatcher dispatcher;
 
+    setUpAll(() async {
+      await bootstrapAndRunApp(withImplicitView: true);
+    });
+
     setUp(() {
       dispatcher = EnginePlatformDispatcher();
     });
@@ -435,7 +436,8 @@ void testMain() {
       expect(beginFrameCalled, true);
       expect(drawFrameCalled.isCompleted, true);
     });
-  });
+    // https://github.com/flutter/flutter/issues/160096
+  }, skip: ui_web.browser.isFirefox);
 }
 
 class MockHighContrastSupport implements HighContrastSupport {
diff --git a/lib/web_ui/test/engine/platform_views/content_manager_test.dart b/lib/web_ui/test/engine/platform_views/content_manager_test.dart
index 6c214419c904d..544ab026fda20 100644
--- a/lib/web_ui/test/engine/platform_views/content_manager_test.dart
+++ b/lib/web_ui/test/engine/platform_views/content_manager_test.dart
@@ -14,9 +14,7 @@ void main() {
 }
 
 void testMain() {
-  setUpAll(() async {
-    await bootstrapAndRunApp();
-  });
+  setUpImplicitView();
 
   group('PlatformViewManager', () {
     const String viewType = 'forTest';
diff --git a/lib/web_ui/test/engine/routing_test.dart b/lib/web_ui/test/engine/routing_test.dart
index 5620868b0685a..641d922e0fc8b 100644
--- a/lib/web_ui/test/engine/routing_test.dart
+++ b/lib/web_ui/test/engine/routing_test.dart
@@ -11,8 +11,11 @@ import 'package:ui/ui.dart' as ui;
 import 'package:ui/ui_web/src/ui_web.dart' as ui_web;
 
 import '../common/matchers.dart';
+import '../common/test_initialization.dart';
 import 'history_test.dart';
 
+EngineFlutterWindow get myWindow => EnginePlatformDispatcher.instance.implicitView!;
+
 Map<String, dynamic> _tagStateWithSerialCount(dynamic state, int serialCount) {
   return <String, dynamic> {
     'serialCount': serialCount,
@@ -25,20 +28,7 @@ void main() {
 }
 
 void testMain() {
-  late EngineFlutterWindow myWindow;
-
-  final EnginePlatformDispatcher dispatcher = EnginePlatformDispatcher.instance;
-
-  setUp(() {
-    myWindow = EngineFlutterView.implicit(dispatcher, createDomHTMLDivElement());
-    dispatcher.viewManager.registerView(myWindow);
-  });
-
-  tearDown(() async {
-    dispatcher.viewManager.unregisterView(myWindow.viewId);
-    await myWindow.resetHistory();
-    myWindow.dispose();
-  });
+  setUpImplicitView();
 
   // For now, web always has an implicit view provided by the web engine.
   test('EnginePlatformDispatcher.instance.implicitView should be non-null', () async {
diff --git a/lib/web_ui/test/engine/scene_view_test.dart b/lib/web_ui/test/engine/scene_view_test.dart
index 76e3b250d3dc3..1b253478ed348 100644
--- a/lib/web_ui/test/engine/scene_view_test.dart
+++ b/lib/web_ui/test/engine/scene_view_test.dart
@@ -154,9 +154,7 @@ void testMain() {
   late EngineSceneView sceneView;
   late StubPictureRenderer stubPictureRenderer;
 
-  setUpAll(() async {
-    await bootstrapAndRunApp(withImplicitView: true);
-  });
+  setUpImplicitView();
 
   setUp(() {
     stubPictureRenderer = StubPictureRenderer();
diff --git a/lib/web_ui/test/engine/semantics/semantics_auto_enable_test.dart b/lib/web_ui/test/engine/semantics/semantics_auto_enable_test.dart
index bdd35a9fbbcca..00c4708027a57 100644
--- a/lib/web_ui/test/engine/semantics/semantics_auto_enable_test.dart
+++ b/lib/web_ui/test/engine/semantics/semantics_auto_enable_test.dart
@@ -22,7 +22,7 @@ void main() {
 }
 
 Future<void> testMain() async {
-  await bootstrapAndRunApp(withImplicitView: true);
+  setUpImplicitView();
 
   test('EngineSemanticsOwner auto-enables semantics on update', () async {
     expect(semantics().semanticsEnabled, isFalse);
diff --git a/lib/web_ui/test/engine/semantics/semantics_multi_view_test.dart b/lib/web_ui/test/engine/semantics/semantics_multi_view_test.dart
index 56f940f37ee27..fc38923e6e8fc 100644
--- a/lib/web_ui/test/engine/semantics/semantics_multi_view_test.dart
+++ b/lib/web_ui/test/engine/semantics/semantics_multi_view_test.dart
@@ -10,7 +10,6 @@ import 'package:test/test.dart';
 import 'package:ui/src/engine.dart';
 import 'package:ui/ui.dart' as ui;
 
-import '../../common/test_initialization.dart';
 import 'semantics_tester.dart';
 
 void main() {
@@ -20,8 +19,6 @@ void main() {
 }
 
 Future<void> testMain() async {
-  await bootstrapAndRunApp();
-
   test('Can create multiple views each with its own semantics tree', () async {
     EngineSemantics.instance.semanticsEnabled = true;
 
diff --git a/lib/web_ui/test/engine/semantics/semantics_placeholder_enable_test.dart b/lib/web_ui/test/engine/semantics/semantics_placeholder_enable_test.dart
index ca0943fb56a40..b72726ed5736d 100644
--- a/lib/web_ui/test/engine/semantics/semantics_placeholder_enable_test.dart
+++ b/lib/web_ui/test/engine/semantics/semantics_placeholder_enable_test.dart
@@ -20,7 +20,7 @@ void main() {
 }
 
 Future<void> testMain() async {
-  await bootstrapAndRunApp(withImplicitView: true);
+  setUpImplicitView();
 
   test('EngineSemantics is enabled via a placeholder click', () async {
     expect(semantics().semanticsEnabled, isFalse);
diff --git a/lib/web_ui/test/engine/semantics/semantics_test.dart b/lib/web_ui/test/engine/semantics/semantics_test.dart
index 5975b9f6a2581..104fd56505685 100644
--- a/lib/web_ui/test/engine/semantics/semantics_test.dart
+++ b/lib/web_ui/test/engine/semantics/semantics_test.dart
@@ -35,6 +35,12 @@ void main() {
 }
 
 Future<void> testMain() async {
+  if (ui_web.browser.isFirefox) {
+    // Firefox gets stuck in bootstrapAndRunApp for a mysterious reason.
+    // https://github.com/flutter/flutter/issues/160096
+    return;
+  }
+
   await bootstrapAndRunApp(withImplicitView: true);
   setUpRenderingForTests();
   runSemanticsTests();
diff --git a/lib/web_ui/test/engine/semantics/semantics_text_test.dart b/lib/web_ui/test/engine/semantics/semantics_text_test.dart
index 599d1f7dc66ca..8c4a97f8f73de 100644
--- a/lib/web_ui/test/engine/semantics/semantics_text_test.dart
+++ b/lib/web_ui/test/engine/semantics/semantics_text_test.dart
@@ -10,7 +10,6 @@ import 'package:test/test.dart';
 import 'package:ui/src/engine.dart';
 import 'package:ui/ui.dart' as ui;
 
-import '../../common/rendering.dart';
 import '../../common/test_initialization.dart';
 import 'semantics_tester.dart';
 
@@ -25,8 +24,7 @@ void main() {
 }
 
 Future<void> testMain() async {
-  await bootstrapAndRunApp(withImplicitView: true);
-  setUpRenderingForTests();
+  setUpImplicitView();
 
   test('renders label text as DOM', () async {
     semantics()
diff --git a/lib/web_ui/test/engine/semantics/text_field_test.dart b/lib/web_ui/test/engine/semantics/text_field_test.dart
index 38cef56fa80e3..458e4f1ed4685 100644
--- a/lib/web_ui/test/engine/semantics/text_field_test.dart
+++ b/lib/web_ui/test/engine/semantics/text_field_test.dart
@@ -9,6 +9,7 @@ import 'package:test/bootstrap/browser.dart';
 import 'package:test/test.dart';
 import 'package:ui/src/engine.dart' hide window;
 import 'package:ui/ui.dart' as ui;
+import 'package:ui/ui_web/src/ui_web.dart' as ui_web;
 
 import '../../common/test_initialization.dart';
 import 'semantics_tester.dart';
@@ -35,9 +36,7 @@ void main() {
 }
 
 void testMain() {
-  setUpAll(() async {
-    await bootstrapAndRunApp(withImplicitView: true);
-  });
+  setUpImplicitView();
 
   setUp(() {
     EngineSemantics.debugResetSemantics();
@@ -474,7 +473,8 @@ void testMain() {
       );
 
       strategy.disable();
-    });
+      // Firefox strips out `-webkit-text-security` from outerHTML.
+    }, skip: ui_web.browser.browserEngine == ui_web.BrowserEngine.firefox);
 
     test('Does not position or size its DOM element', () {
       strategy.enable(
diff --git a/lib/web_ui/test/engine/surface/platform_view_test.dart b/lib/web_ui/test/engine/surface/platform_view_test.dart
index 9281d73bb5ebe..88078efb036ef 100644
--- a/lib/web_ui/test/engine/surface/platform_view_test.dart
+++ b/lib/web_ui/test/engine/surface/platform_view_test.dart
@@ -10,20 +10,11 @@ import 'package:ui/src/engine.dart';
 import 'package:ui/ui.dart' as ui;
 import 'package:ui/ui_web/src/ui_web.dart' as ui_web;
 
-import '../../common/matchers.dart';
-import '../../common/test_initialization.dart';
-
-const MethodCodec codec = StandardMethodCodec();
-
 void main() {
   internalBootstrapBrowserTest(() => testMain);
 }
 
 Future<void> testMain() async {
-  await bootstrapAndRunApp(withImplicitView: true);
-
-  late PersistedPlatformView view;
-
   test('importing platformViewRegistry from dart:ui is deprecated', () {
     final void Function(String) oldPrintWarning = printWarning;
 
@@ -45,75 +36,4 @@ Future<void> testMain() async {
 
     printWarning = oldPrintWarning;
   });
-
-  group('PersistedPlatformView', () {
-    setUp(() async {
-      ui_web.platformViewRegistry.registerViewFactory(
-        'test-0',
-        (int viewId) => createDomHTMLDivElement(),
-      );
-      ui_web.platformViewRegistry.registerViewFactory(
-        'test-1',
-        (int viewId) => createDomHTMLDivElement(),
-      );
-      // Ensure the views are created...
-      await Future.wait(<Future<void>>[
-        _createPlatformView(0, 'test-0'),
-        _createPlatformView(1, 'test-1'),
-      ]);
-      view = PersistedPlatformView(0, 0, 0, 100, 100)..build();
-    });
-
-    group('update', () {
-      test('throws assertion error if called with different viewIds', () {
-        final PersistedPlatformView differentView = PersistedPlatformView(1, 1, 1, 100, 100)..build();
-        expect(() {
-          view.update(differentView);
-        }, throwsAssertionError);
-      });
-    });
-
-    group('canUpdateAsMatch', () {
-      test('returns true when viewId is the same', () {
-        final PersistedPlatformView sameView = PersistedPlatformView(0, 1, 1, 100, 100)..build();
-        expect(view.canUpdateAsMatch(sameView), isTrue);
-      });
-
-      test('returns false when viewId is different', () {
-        final PersistedPlatformView differentView = PersistedPlatformView(1, 1, 1, 100, 100)..build();
-        expect(view.canUpdateAsMatch(differentView), isFalse);
-      });
-
-      test('returns false when other view is not a PlatformView', () {
-        final PersistedOpacity anyView = PersistedOpacity(null, 1, ui.Offset.zero)..build();
-        expect(view.canUpdateAsMatch(anyView), isFalse);
-      });
-    });
-
-    group('createElement', () {
-      test('creates slot element that can receive pointer events', () {
-        final DomElement element = view.createElement();
-
-        expect(element.tagName, equalsIgnoringCase('flt-platform-view-slot'));
-        expect(element.style.pointerEvents, 'auto');
-      });
-    });
-  });
-}
-
-// Sends a platform message to create a Platform View with the given id and viewType.
-Future<void> _createPlatformView(int id, String viewType) {
-  final Completer<void> completer = Completer<void>();
-  ui.PlatformDispatcher.instance.sendPlatformMessage(
-    'flutter/platform_views',
-    codec.encodeMethodCall(MethodCall(
-      'create',
-      <String, dynamic>{
-        'id': id,
-        'viewType': viewType,
-      },
-    )),
-    (dynamic _) => completer.complete(),
-  );
-  return completer.future;
 }
diff --git a/lib/web_ui/test/engine/text_editing_test.dart b/lib/web_ui/test/engine/text_editing_test.dart
index bea5f02bf0d66..41b88887bf68a 100644
--- a/lib/web_ui/test/engine/text_editing_test.dart
+++ b/lib/web_ui/test/engine/text_editing_test.dart
@@ -64,11 +64,7 @@ void main() {
 }
 
 Future<void> testMain() async {
-  setUpUnitTests(
-    withImplicitView: true,
-    emulateTesterEnvironment: false,
-    setUpTestViewDimensions: false
-  );
+  setUpImplicitView();
 
   setUp(() {
     domDocument.activeElement?.blur();
diff --git a/lib/web_ui/test/engine/window_test.dart b/lib/web_ui/test/engine/window_test.dart
index 299490dc00c66..905c1416f7ba2 100644
--- a/lib/web_ui/test/engine/window_test.dart
+++ b/lib/web_ui/test/engine/window_test.dart
@@ -466,7 +466,7 @@ Future<void> testMain() async {
     final DomElement host = createDomHTMLDivElement();
     final EngineFlutterView view = EngineFlutterView(dispatcher, host);
 
-    expect(host.getAttribute('flt-renderer'), 'html (requested explicitly)');
+    expect(host.getAttribute('flt-renderer'), 'canvaskit (requested explicitly)');
     expect(host.getAttribute('flt-build-mode'), 'debug');
 
     view.dispose();
diff --git a/lib/web_ui/test/felt_config.yaml b/lib/web_ui/test/felt_config.yaml
index b081865921f76..5836919a36cf5 100644
--- a/lib/web_ui/test/felt_config.yaml
+++ b/lib/web_ui/test/felt_config.yaml
@@ -13,9 +13,9 @@ compile-configs:
     compiler: dart2js
     renderer: skwasm
 
-  - name: dart2wasm-html
+  - name: dart2wasm-canvaskit
     compiler: dart2wasm
-    renderer: html
+    renderer: canvaskit
 
   - name: dart2wasm-skwasm
     compiler: dart2wasm
@@ -43,10 +43,6 @@ test-sets:
     directory: fallbacks
 
 test-bundles:
-  - name: dart2js-html-engine
-    test-set: engine
-    compile-configs: dart2js-html
-
   - name: dart2js-html-html
     test-set: html
     compile-configs: dart2js-html
@@ -55,6 +51,10 @@ test-bundles:
     test-set: ui
     compile-configs: dart2js-html
 
+  - name: dart2js-canvaskit-engine
+    test-set: engine
+    compile-configs: dart2js-canvaskit
+
   - name: dart2js-canvaskit-canvaskit
     test-set: canvaskit
     compile-configs: dart2js-canvaskit
@@ -63,9 +63,9 @@ test-bundles:
     test-set: ui
     compile-configs: dart2js-canvaskit
 
-  - name: dart2wasm-html-engine
+  - name: dart2wasm-canvaskit-engine
     test-set: engine
-    compile-configs: dart2wasm-html
+    compile-configs: dart2wasm-canvaskit
 
   - name: dart2wasm-skwasm-ui
     test-set: ui
@@ -114,10 +114,6 @@ run-configs:
     canvaskit-variant: full
 
 test-suites:
-  - name: chrome-dart2js-html-engine
-    test-bundle: dart2js-html-engine
-    run-config: chrome
-
   - name: chrome-dart2js-html-html
     test-bundle: dart2js-html-html
     run-config: chrome
@@ -126,6 +122,11 @@ test-suites:
     test-bundle: dart2js-html-ui
     run-config: chrome
 
+  - name: chrome-dart2js-canvaskit-engine
+    test-bundle: dart2js-canvaskit-engine
+    run-config: chrome
+    artifact-deps: [ canvaskit_chromium ]
+
   - name: chrome-dart2js-canvaskit-canvaskit
     test-bundle: dart2js-canvaskit-canvaskit
     run-config: chrome
@@ -146,10 +147,6 @@ test-suites:
     run-config: chrome-full
     artifact-deps: [ canvaskit ]
 
-  - name: edge-dart2js-html-engine
-    test-bundle: dart2js-html-engine
-    run-config: edge
-
   - name: edge-dart2js-html-html
     test-bundle: dart2js-html-html
     run-config: edge
@@ -158,6 +155,11 @@ test-suites:
     test-bundle: dart2js-html-ui
     run-config: edge
 
+  - name: edge-dart2js-canvaskit-engine
+    test-bundle: dart2js-canvaskit-engine
+    run-config: edge
+    artifact-deps: [ canvaskit_chromium ]
+
   - name: edge-dart2js-canvaskit-canvaskit
     test-bundle: dart2js-canvaskit-canvaskit
     run-config: edge
@@ -178,10 +180,6 @@ test-suites:
     run-config: edge-full
     artifact-deps: [ canvaskit ]
 
-  - name: firefox-dart2js-html-engine
-    test-bundle: dart2js-html-engine
-    run-config: firefox
-
   - name: firefox-dart2js-html-html
     test-bundle: dart2js-html-html
     run-config: firefox
@@ -190,6 +188,11 @@ test-suites:
     test-bundle: dart2js-html-ui
     run-config: firefox
 
+  - name: firefox-dart2js-canvaskit-engine
+    test-bundle: dart2js-canvaskit-engine
+    run-config: firefox
+    artifact-deps: [ canvaskit ]
+
   - name: firefox-dart2js-canvaskit-canvaskit
     test-bundle: dart2js-canvaskit-canvaskit
     run-config: firefox
@@ -200,10 +203,6 @@ test-suites:
     run-config: firefox
     artifact-deps: [ canvaskit ]
 
-  - name: safari-dart2js-html-engine
-    test-bundle: dart2js-html-engine
-    run-config: safari
-
   - name: safari-dart2js-html-html
     test-bundle: dart2js-html-html
     run-config: safari
@@ -212,6 +211,11 @@ test-suites:
     test-bundle: dart2js-html-ui
     run-config: safari
 
+  - name: safari-dart2js-canvaskit-engine
+    test-bundle: dart2js-canvaskit-engine
+    run-config: safari
+    artifact-deps: [ canvaskit ]
+
   - name: safari-dart2js-canvaskit-canvaskit
     test-bundle: dart2js-canvaskit-canvaskit
     run-config: safari
@@ -222,9 +226,10 @@ test-suites:
     run-config: safari
     artifact-deps: [ canvaskit ]
 
-  - name: chrome-dart2wasm-html-engine
-    test-bundle: dart2wasm-html-engine
+  - name: chrome-dart2wasm-canvaskit-engine
+    test-bundle: dart2wasm-canvaskit-engine
     run-config: chrome
+    artifact-deps: [ canvaskit_chromium ]
 
   - name: chrome-coi-dart2wasm-skwasm-ui
     test-bundle: dart2wasm-skwasm-ui
diff --git a/lib/web_ui/test/engine/canvas_test.dart b/lib/web_ui/test/html/canvas_test.dart
similarity index 100%
rename from lib/web_ui/test/engine/canvas_test.dart
rename to lib/web_ui/test/html/canvas_test.dart
diff --git a/lib/web_ui/test/engine/image/html_image_element_codec_test.dart b/lib/web_ui/test/html/image/html_image_element_codec_test.dart
similarity index 100%
rename from lib/web_ui/test/engine/image/html_image_element_codec_test.dart
rename to lib/web_ui/test/html/image/html_image_element_codec_test.dart
diff --git a/lib/web_ui/test/engine/image/sample_image1.png b/lib/web_ui/test/html/image/sample_image1.png
similarity index 100%
rename from lib/web_ui/test/engine/image/sample_image1.png
rename to lib/web_ui/test/html/image/sample_image1.png
diff --git a/lib/web_ui/test/engine/recording_canvas_test.dart b/lib/web_ui/test/html/recording_canvas_test.dart
similarity index 100%
rename from lib/web_ui/test/engine/recording_canvas_test.dart
rename to lib/web_ui/test/html/recording_canvas_test.dart
diff --git a/lib/web_ui/test/engine/surface/path/path_iterator_test.dart b/lib/web_ui/test/html/surface/path/path_iterator_test.dart
similarity index 100%
rename from lib/web_ui/test/engine/surface/path/path_iterator_test.dart
rename to lib/web_ui/test/html/surface/path/path_iterator_test.dart
diff --git a/lib/web_ui/test/engine/surface/path/path_winding_test.dart b/lib/web_ui/test/html/surface/path/path_winding_test.dart
similarity index 100%
rename from lib/web_ui/test/engine/surface/path/path_winding_test.dart
rename to lib/web_ui/test/html/surface/path/path_winding_test.dart
diff --git a/lib/web_ui/test/html/surface/platform_view_test.dart b/lib/web_ui/test/html/surface/platform_view_test.dart
new file mode 100644
index 0000000000000..fe2a04508c264
--- /dev/null
+++ b/lib/web_ui/test/html/surface/platform_view_test.dart
@@ -0,0 +1,97 @@
+// Copyright 2013 The Flutter Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+import 'dart:async';
+
+import 'package:test/bootstrap/browser.dart';
+import 'package:test/test.dart';
+import 'package:ui/src/engine.dart';
+import 'package:ui/ui.dart' as ui;
+import 'package:ui/ui_web/src/ui_web.dart' as ui_web;
+
+import '../../common/matchers.dart';
+import '../../common/test_initialization.dart';
+
+const MethodCodec codec = StandardMethodCodec();
+
+void main() {
+  internalBootstrapBrowserTest(() => testMain);
+}
+
+Future<void> testMain() async {
+  await bootstrapAndRunApp(withImplicitView: true);
+
+  late PersistedPlatformView view;
+
+  group('PersistedPlatformView', () {
+    setUp(() async {
+      ui_web.platformViewRegistry.registerViewFactory(
+        'test-0',
+        (int viewId) => createDomHTMLDivElement(),
+      );
+      ui_web.platformViewRegistry.registerViewFactory(
+        'test-1',
+        (int viewId) => createDomHTMLDivElement(),
+      );
+      // Ensure the views are created...
+      await Future.wait(<Future<void>>[
+        _createPlatformView(0, 'test-0'),
+        _createPlatformView(1, 'test-1'),
+      ]);
+      view = PersistedPlatformView(0, 0, 0, 100, 100)..build();
+    });
+
+    group('update', () {
+      test('throws assertion error if called with different viewIds', () {
+        final PersistedPlatformView differentView = PersistedPlatformView(1, 1, 1, 100, 100)..build();
+        expect(() {
+          view.update(differentView);
+        }, throwsAssertionError);
+      });
+    });
+
+    group('canUpdateAsMatch', () {
+      test('returns true when viewId is the same', () {
+        final PersistedPlatformView sameView = PersistedPlatformView(0, 1, 1, 100, 100)..build();
+        expect(view.canUpdateAsMatch(sameView), isTrue);
+      });
+
+      test('returns false when viewId is different', () {
+        final PersistedPlatformView differentView = PersistedPlatformView(1, 1, 1, 100, 100)..build();
+        expect(view.canUpdateAsMatch(differentView), isFalse);
+      });
+
+      test('returns false when other view is not a PlatformView', () {
+        final PersistedOpacity anyView = PersistedOpacity(null, 1, ui.Offset.zero)..build();
+        expect(view.canUpdateAsMatch(anyView), isFalse);
+      });
+    });
+
+    group('createElement', () {
+      test('creates slot element that can receive pointer events', () {
+        final DomElement element = view.createElement();
+
+        expect(element.tagName, equalsIgnoringCase('flt-platform-view-slot'));
+        expect(element.style.pointerEvents, 'auto');
+      });
+    });
+  });
+}
+
+// Sends a platform message to create a Platform View with the given id and viewType.
+Future<void> _createPlatformView(int id, String viewType) {
+  final Completer<void> completer = Completer<void>();
+  ui.PlatformDispatcher.instance.sendPlatformMessage(
+    'flutter/platform_views',
+    codec.encodeMethodCall(MethodCall(
+      'create',
+      <String, dynamic>{
+        'id': id,
+        'viewType': viewType,
+      },
+    )),
+    (dynamic _) => completer.complete(),
+  );
+  return completer.future;
+}
diff --git a/lib/web_ui/test/engine/surface/scene_builder_test.dart b/lib/web_ui/test/html/surface/scene_builder_test.dart
similarity index 100%
rename from lib/web_ui/test/engine/surface/scene_builder_test.dart
rename to lib/web_ui/test/html/surface/scene_builder_test.dart
diff --git a/lib/web_ui/test/engine/surface/shaders/normalized_gradient_test.dart b/lib/web_ui/test/html/surface/shaders/normalized_gradient_test.dart
similarity index 100%
rename from lib/web_ui/test/engine/surface/shaders/normalized_gradient_test.dart
rename to lib/web_ui/test/html/surface/shaders/normalized_gradient_test.dart
diff --git a/lib/web_ui/test/engine/surface/shaders/shader_builder_test.dart b/lib/web_ui/test/html/surface/shaders/shader_builder_test.dart
similarity index 100%
rename from lib/web_ui/test/engine/surface/shaders/shader_builder_test.dart
rename to lib/web_ui/test/html/surface/shaders/shader_builder_test.dart
diff --git a/lib/web_ui/test/engine/surface/surface_test.dart b/lib/web_ui/test/html/surface/surface_test.dart
similarity index 100%
rename from lib/web_ui/test/engine/surface/surface_test.dart
rename to lib/web_ui/test/html/surface/surface_test.dart