Reland "Move native assets to `isolated/` directory" (#143055)

Reland of https://github.com/flutter/flutter/pull/142709.

The revert of the revert is in the first commit, the fix in the commit on top.

The move of the fakes for packages/flutter_tools/test/general.shard/resident_runner_test.dart was erroneous before, as it was trying to use setters instead of a private field. This PR changes the private `_devFS` field in the fake to be a public `fakeDevFS` in line with other fakes.

## Original PR description

Native assets in other build systems are not built with `package:native_assets_builder` invoking `build.dart` scripts. Instead all packages have their own blaze rules. Therefore we'd like to not depend on `package:native_assets_builder` from flutter tools in g3 at all.

This PR aims to move the imports of `native_assets_builder` and `native_assets_cli` into the `isolated/` directory and into the files with a `main` function that are not used in with other build systems.

In order to be able to remove all imports in files used by other build systems, two new interfaces are added `HotRunnerNativeAssetsBuilder` and `TestCompilerNativeAssetsBuilder`. New parameters are then piped all the way through from the entry points:

* bin/fuchsia_tester.dart
* lib/executable.dart

The build_system/targets dir is already excluded in other build systems.

So, after this PR only the two above files and build_system/targets import from `isolated/native_assets/` and only `isolated/native_assets/` import `package:native_assets_cli` and `package:native_assets_builder`.

Context:

* https://github.com/flutter/flutter/issues/142041

packages/flutter_tools/bin/fuchsia_tester.dart

@@ -16,6 +16,7 @@ import 'package:flutter_tools/src/cache.dart';
 import 'package:flutter_tools/src/context_runner.dart';
 import 'package:flutter_tools/src/device.dart';
 import 'package:flutter_tools/src/globals.dart' as globals;
+import 'package:flutter_tools/src/isolated/native_assets/test/native_assets.dart';
 import 'package:flutter_tools/src/project.dart';
 import 'package:flutter_tools/src/reporting/reporting.dart';
 import 'package:flutter_tools/src/test/coverage_collector.dart';
@@ -153,6 +154,7 @@ Future<void> run(List<String> args) async {
       concurrency: math.max(1, globals.platform.numberOfProcessors - 2),
       icudtlPath: globals.fs.path.absolute(argResults[_kOptionIcudtl] as String),
       coverageDirectory: coverageDirectory,
+      nativeAssetsBuilder: const TestCompilerNativeAssetsBuilderImpl(),
     );
 
     if (collector != null) {

packages/flutter_tools/lib/executable.dart

@@ -50,6 +50,8 @@ import 'src/globals.dart' as globals;
 // Files in `isolated` are intentionally excluded from google3 tooling.
 import 'src/isolated/build_targets.dart';
 import 'src/isolated/mustache_template.dart';
+import 'src/isolated/native_assets/native_assets.dart';
+import 'src/isolated/native_assets/test/native_assets.dart';
 import 'src/isolated/resident_web_runner.dart';
 import 'src/pre_run_validator.dart';
 import 'src/project_validator.dart';
@@ -177,6 +179,7 @@ List<FlutterCommand> generateCommands({
     platform: globals.platform,
     processInfo: globals.processInfo,
     fileSystem: globals.fs,
+    nativeAssetsBuilder: const HotRunnerNativeAssetsBuilderImpl(),
   ),
   BuildCommand(
     artifacts: globals.artifacts!,
@@ -237,10 +240,17 @@ List<FlutterCommand> generateCommands({
     platform: globals.platform,
     featureFlags: featureFlags,
   ),
-  RunCommand(verboseHelp: verboseHelp),
+  RunCommand(
+    verboseHelp: verboseHelp,
+    nativeAssetsBuilder: const HotRunnerNativeAssetsBuilderImpl(),
+  ),
   ScreenshotCommand(fs: globals.fs),
   ShellCompletionCommand(),
-  TestCommand(verboseHelp: verboseHelp, verbose: verbose),
+  TestCommand(
+    verboseHelp: verboseHelp,
+    verbose: verbose,
+    nativeAssetsBuilder: const TestCompilerNativeAssetsBuilderImpl(),
+  ),
   UpgradeCommand(verboseHelp: verboseHelp),
   SymbolizeCommand(
     stdio: globals.stdio,

packages/flutter_tools/lib/src/build_system/targets/native_assets.dart

@@ -7,18 +7,18 @@ import 'package:native_assets_cli/native_assets_cli_internal.dart' show Asset;
 import 'package:package_config/package_config_types.dart';
 
 import '../../android/gradle_utils.dart';
-import '../../android/native_assets.dart';
 import '../../base/common.dart';
 import '../../base/file_system.dart';
 import '../../base/platform.dart';
 import '../../build_info.dart';
 import '../../dart/package_map.dart';
-import '../../ios/native_assets.dart';
-import '../../linux/native_assets.dart';
-import '../../macos/native_assets.dart';
+import '../../isolated/native_assets/android/native_assets.dart';
+import '../../isolated/native_assets/ios/native_assets.dart';
+import '../../isolated/native_assets/linux/native_assets.dart';
+import '../../isolated/native_assets/macos/native_assets.dart';
+import '../../isolated/native_assets/native_assets.dart';
+import '../../isolated/native_assets/windows/native_assets.dart';
 import '../../macos/xcode.dart';
-import '../../native_assets.dart';
-import '../../windows/native_assets.dart';
 import '../build_system.dart';
 import '../depfile.dart';
 import '../exceptions.dart';

packages/flutter_tools/lib/src/commands/attach.dart

@@ -71,6 +71,7 @@ class AttachCommand extends FlutterCommand {
     required Platform platform,
     required ProcessInfo processInfo,
     required FileSystem fileSystem,
+    HotRunnerNativeAssetsBuilder? nativeAssetsBuilder,
   }) : _hotRunnerFactory = hotRunnerFactory ?? HotRunnerFactory(),
        _stdio = stdio,
        _logger = logger,
@@ -78,7 +79,8 @@ class AttachCommand extends FlutterCommand {
        _signals = signals,
        _platform = platform,
        _processInfo = processInfo,
-       _fileSystem = fileSystem {
+       _fileSystem = fileSystem,
+       _nativeAssetsBuilder = nativeAssetsBuilder {
     addBuildModeFlags(verboseHelp: verboseHelp, defaultToRelease: false, excludeRelease: true);
     usesTargetOption();
     usesPortOptions(verboseHelp: verboseHelp);
@@ -150,6 +152,7 @@ class AttachCommand extends FlutterCommand {
   final Platform _platform;
   final ProcessInfo _processInfo;
   final FileSystem _fileSystem;
+  final HotRunnerNativeAssetsBuilder? _nativeAssetsBuilder;
 
   @override
   final String name = 'attach';
@@ -416,6 +419,7 @@ known, it can be explicitly provided to attach via the command-line, e.g.
           device: device,
           flutterProject: flutterProject,
           usesIpv6: usesIpv6,
+          nativeAssetsBuilder: _nativeAssetsBuilder,
         );
         late AppInstance app;
         try {
@@ -449,6 +453,7 @@ known, it can be explicitly provided to attach via the command-line, e.g.
           device: device,
           flutterProject: flutterProject,
           usesIpv6: usesIpv6,
+          nativeAssetsBuilder: _nativeAssetsBuilder,
         );
         final Completer<void> onAppStart = Completer<void>.sync();
         TerminalHandler? terminalHandler;
@@ -505,6 +510,7 @@ known, it can be explicitly provided to attach via the command-line, e.g.
     required Device device,
     required FlutterProject flutterProject,
     required bool usesIpv6,
+    required HotRunnerNativeAssetsBuilder? nativeAssetsBuilder,
   }) async {
     final BuildInfo buildInfo = await getBuildInfo();
 
@@ -539,6 +545,7 @@ known, it can be explicitly provided to attach via the command-line, e.g.
           ipv6: usesIpv6,
           flutterProject: flutterProject,
           nativeAssetsYamlFile: stringArg(FlutterOptions.kNativeAssetsYamlFile),
+          nativeAssetsBuilder: _nativeAssetsBuilder,
           analytics: analytics,
         )
       : ColdRunner(
@@ -573,6 +580,7 @@ class HotRunnerFactory {
     bool ipv6 = false,
     FlutterProject? flutterProject,
     String? nativeAssetsYamlFile,
+    required HotRunnerNativeAssetsBuilder? nativeAssetsBuilder,
     required Analytics analytics,
   }) => HotRunner(
     devices,
@@ -586,6 +594,7 @@ class HotRunnerFactory {
     stayResident: stayResident,
     ipv6: ipv6,
     nativeAssetsYamlFile: nativeAssetsYamlFile,
+    nativeAssetsBuilder: nativeAssetsBuilder,
     analytics: analytics,
   );
 }

packages/flutter_tools/lib/src/commands/daemon.dart

@@ -654,6 +654,7 @@ class AppDomain extends Domain {
     bool machine = true,
     String? userIdentifier,
     bool enableDevTools = true,
+    required HotRunnerNativeAssetsBuilder? nativeAssetsBuilder,
   }) async {
     if (!await device.supportsRuntimeMode(options.buildInfo.mode)) {
       throw Exception(
@@ -705,6 +706,7 @@ class AppDomain extends Domain {
         hostIsIde: true,
         machine: machine,
         analytics: globals.analytics,
+        nativeAssetsBuilder: nativeAssetsBuilder,
       );
     } else {
       runner = ColdRunner(

packages/flutter_tools/lib/src/commands/run.dart

@@ -334,7 +334,11 @@ abstract class RunCommandBase extends FlutterCommand with DeviceBasedDevelopment
 }
 
 class RunCommand extends RunCommandBase {
-  RunCommand({ bool verboseHelp = false }) : super(verboseHelp: verboseHelp) {
+  RunCommand({
+    bool verboseHelp = false,
+    HotRunnerNativeAssetsBuilder? nativeAssetsBuilder,
+  }) : _nativeAssetsBuilder = nativeAssetsBuilder,
+       super(verboseHelp: verboseHelp) {
     requiresPubspecYaml();
     usesFilesystemOptions(hide: !verboseHelp);
     usesExtraDartFlagOptions(verboseHelp: verboseHelp);
@@ -418,6 +422,8 @@ class RunCommand extends RunCommandBase {
       );
   }
 
+  final HotRunnerNativeAssetsBuilder? _nativeAssetsBuilder;
+
   @override
   final String name = 'run';
 
@@ -660,6 +666,7 @@ class RunCommand extends RunCommandBase {
         ipv6: ipv6 ?? false,
         analytics: globals.analytics,
         nativeAssetsYamlFile: stringArg(FlutterOptions.kNativeAssetsYamlFile),
+        nativeAssetsBuilder: _nativeAssetsBuilder,
       );
     } else if (webMode) {
       return webRunnerFactory!.createWebRunner(
@@ -733,6 +740,7 @@ class RunCommand extends RunCommandBase {
           ipv6: ipv6 ?? false,
           userIdentifier: userIdentifier,
           enableDevTools: boolArg(FlutterCommand.kEnableDevTools),
+          nativeAssetsBuilder: _nativeAssetsBuilder,
         );
       } on Exception catch (error) {
         throwToolExit(error.toString());

packages/flutter_tools/lib/src/commands/test.dart

@@ -13,6 +13,7 @@ import '../bundle_builder.dart';
 import '../devfs.dart';
 import '../device.dart';
 import '../globals.dart' as globals;
+import '../native_assets.dart';
 import '../project.dart';
 import '../runner/flutter_command.dart';
 import '../test/coverage_collector.dart';
@@ -64,6 +65,7 @@ class TestCommand extends FlutterCommand with DeviceBasedDevelopmentArtifacts {
     this.testWrapper = const TestWrapper(),
     this.testRunner = const FlutterTestRunner(),
     this.verbose = false,
+    this.nativeAssetsBuilder,
   }) {
     requiresPubspecYaml();
     usesPubOption();
@@ -238,6 +240,8 @@ class TestCommand extends FlutterCommand with DeviceBasedDevelopmentArtifacts {
   /// Interface for running the tester process.
   final FlutterTestRunner testRunner;
 
+  final TestCompilerNativeAssetsBuilder? nativeAssetsBuilder;
+
   final bool verbose;
 
   @visibleForTesting
@@ -510,6 +514,7 @@ class TestCommand extends FlutterCommand with DeviceBasedDevelopmentArtifacts {
       integrationTestDevice: integrationTestDevice,
       integrationTestUserIdentifier: stringArg(FlutterOptions.kDeviceUser),
       testTimeRecorder: testTimeRecorder,
+      nativeAssetsBuilder: nativeAssetsBuilder,
     );
     testTimeRecorder?.stop(TestTimePhases.TestRunner, testRunnerTimeRecorderStopwatch!);
 

packages/flutter_tools/lib/src/isolated/native_assets/README.md

+The directory structure in here mirrors the directory structure in lib/src/.
+
+The native assets feature lives in lib/src/isolated/ because this code is not
+used in other build systems.

packages/flutter_tools/lib/src/android/native_assets.dart → packages/flutter_tools/lib/src/isolated/native_assets/android/native_assets.dart

@@ -4,17 +4,17 @@
 
 import 'package:native_assets_builder/native_assets_builder.dart'
     show BuildResult, DryRunResult;
-import 'package:native_assets_cli/native_assets_cli_internal.dart'
-    hide BuildMode;
 import 'package:native_assets_cli/native_assets_cli_internal.dart'
     as native_assets_cli;
+import 'package:native_assets_cli/native_assets_cli_internal.dart'
+    hide BuildMode;
 
-import '../base/common.dart';
-import '../base/file_system.dart';
-import '../build_info.dart';
-import '../globals.dart' as globals;
+import '../../../android/android_sdk.dart';
+import '../../../base/common.dart';
+import '../../../base/file_system.dart';
+import '../../../build_info.dart';
+import '../../../globals.dart' as globals;
 import '../native_assets.dart';
-import 'android_sdk.dart';
 
 /// Dry run the native builds.
 ///

packages/flutter_tools/lib/src/ios/native_assets.dart → packages/flutter_tools/lib/src/isolated/native_assets/ios/native_assets.dart

@@ -9,9 +9,9 @@ import 'package:native_assets_cli/native_assets_cli_internal.dart'
 import 'package:native_assets_cli/native_assets_cli_internal.dart'
     as native_assets_cli;
 
-import '../base/file_system.dart';
-import '../build_info.dart';
-import '../globals.dart' as globals;
+import '../../../base/file_system.dart';
+import '../../../build_info.dart';
+import '../../../globals.dart' as globals;
 
 import '../macos/native_assets_host.dart';
 import '../native_assets.dart';

packages/flutter_tools/lib/src/linux/native_assets.dart → packages/flutter_tools/lib/src/isolated/native_assets/linux/native_assets.dart

@@ -5,11 +5,11 @@
 import 'package:native_assets_cli/native_assets_cli_internal.dart'
     hide BuildMode;
 
-import '../base/common.dart';
-import '../base/file_system.dart';
-import '../base/io.dart';
-import '../build_info.dart';
-import '../globals.dart' as globals;
+import '../../../base/common.dart';
+import '../../../base/file_system.dart';
+import '../../../base/io.dart';
+import '../../../build_info.dart';
+import '../../../globals.dart' as globals;
 import '../native_assets.dart';
 
 /// Dry run the native builds.

packages/flutter_tools/lib/src/macos/native_assets.dart → packages/flutter_tools/lib/src/isolated/native_assets/macos/native_assets.dart

@@ -9,9 +9,9 @@ import 'package:native_assets_cli/native_assets_cli_internal.dart'
 import 'package:native_assets_cli/native_assets_cli_internal.dart'
     as native_assets_cli;
 
-import '../base/file_system.dart';
-import '../build_info.dart';
-import '../globals.dart' as globals;
+import '../../../base/file_system.dart';
+import '../../../build_info.dart';
+import '../../../globals.dart' as globals;
 import '../native_assets.dart';
 import 'native_assets_host.dart';
 

packages/flutter_tools/lib/src/macos/native_assets_host.dart → packages/flutter_tools/lib/src/isolated/native_assets/macos/native_assets_host.dart

@@ -7,12 +7,12 @@
 import 'package:native_assets_cli/native_assets_cli_internal.dart'
     hide BuildMode;
 
-import '../base/common.dart';
-import '../base/file_system.dart';
-import '../base/io.dart';
-import '../build_info.dart';
-import '../convert.dart';
-import '../globals.dart' as globals;
+import '../../../base/common.dart';
+import '../../../base/file_system.dart';
+import '../../../base/io.dart';
+import '../../../build_info.dart';
+import '../../../convert.dart';
+import '../../../globals.dart' as globals;
 
 /// Create an `Info.plist` in [target] for a framework with a single dylib.
 ///

packages/flutter_tools/lib/src/isolated/native_assets/test/native_assets.dart

+// Copyright 2014 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.
+
+// Logic for native assets shared between all host OSes.
+
+import '../../../base/os.dart';
+import '../../../base/platform.dart';
+import '../../../build_info.dart';
+import '../../../globals.dart' as globals;
+import '../../../native_assets.dart';
+import '../../../project.dart';
+import '../linux/native_assets.dart';
+import '../macos/native_assets.dart';
+import '../native_assets.dart';
+import '../windows/native_assets.dart';
+
+class TestCompilerNativeAssetsBuilderImpl
+    implements TestCompilerNativeAssetsBuilder {
+  const TestCompilerNativeAssetsBuilderImpl();
+
+  @override
+  Future<Uri?> build(BuildInfo buildInfo) =>
+      testCompilerBuildNativeAssets(buildInfo);
+}
+
+Future<Uri?> testCompilerBuildNativeAssets(BuildInfo buildInfo) async {
+  Uri? nativeAssetsYaml;
+  if (!buildInfo.buildNativeAssets) {
+    nativeAssetsYaml = null;
+  } else {
+    final Uri projectUri = FlutterProject.current().directory.uri;
+    final NativeAssetsBuildRunner buildRunner = NativeAssetsBuildRunnerImpl(
+      projectUri,
+      buildInfo.packageConfig,
+      globals.fs,
+      globals.logger,
+    );
+    if (globals.platform.isMacOS) {
+      (nativeAssetsYaml, _) = await buildNativeAssetsMacOS(
+        buildMode: buildInfo.mode,
+        projectUri: projectUri,
+        flutterTester: true,
+        fileSystem: globals.fs,
+        buildRunner: buildRunner,
+      );
+    } else if (globals.platform.isLinux) {
+      (nativeAssetsYaml, _) = await buildNativeAssetsLinux(
+        buildMode: buildInfo.mode,
+        projectUri: projectUri,
+        flutterTester: true,
+        fileSystem: globals.fs,
+        buildRunner: buildRunner,
+      );
+    } else if (globals.platform.isWindows) {
+      final TargetPlatform targetPlatform;
+      if (globals.os.hostPlatform == HostPlatform.windows_x64) {
+        targetPlatform = TargetPlatform.windows_x64;
+      } else {
+        targetPlatform = TargetPlatform.windows_arm64;
+      }
+      (nativeAssetsYaml, _) = await buildNativeAssetsWindows(
+        buildMode: buildInfo.mode,
+        targetPlatform: targetPlatform,
+        projectUri: projectUri,
+        flutterTester: true,
+        fileSystem: globals.fs,
+        buildRunner: buildRunner,
+      );
+    } else {
+      await ensureNoNativeAssetsOrOsIsSupported(
+        projectUri,
+        const LocalPlatform().operatingSystem,
+        globals.fs,
+        buildRunner,
+      );
+    }
+  }
+  return nativeAssetsYaml;
+}

packages/flutter_tools/lib/src/windows/native_assets.dart → packages/flutter_tools/lib/src/isolated/native_assets/windows/native_assets.dart

@@ -5,11 +5,11 @@
 import 'package:native_assets_cli/native_assets_cli_internal.dart'
     hide BuildMode;
 
-import '../base/file_system.dart';
-import '../build_info.dart';
-import '../globals.dart' as globals;
+import '../../../base/file_system.dart';
+import '../../../build_info.dart';
+import '../../../globals.dart' as globals;
+import '../../../windows/visual_studio.dart';
 import '../native_assets.dart';
-import 'visual_studio.dart';
 
 /// Dry run the native builds.
 ///
@@ -66,7 +66,6 @@ Future<(Uri? nativeAssetsYaml, List<Uri> dependencies)>
   );
 }
 
-
 Future<CCompilerConfig> cCompilerConfigWindows() async {
   final VisualStudio visualStudio = VisualStudio(
     fileSystem: globals.fs,

packages/flutter_tools/lib/src/run_hot.dart

@@ -22,7 +22,6 @@ import 'dart/package_map.dart';
 import 'devfs.dart';
 import 'device.dart';
 import 'globals.dart' as globals;
-import 'native_assets.dart';
 import 'project.dart';
 import 'reporting/reporting.dart';
 import 'resident_runner.dart';
@@ -93,13 +92,13 @@ class HotRunner extends ResidentRunner {
     StopwatchFactory stopwatchFactory = const StopwatchFactory(),
     ReloadSourcesHelper reloadSourcesHelper = defaultReloadSourcesHelper,
     ReassembleHelper reassembleHelper = _defaultReassembleHelper,
-    NativeAssetsBuildRunner? buildRunner,
+    HotRunnerNativeAssetsBuilder? nativeAssetsBuilder,
     String? nativeAssetsYamlFile,
     required Analytics analytics,
   })  : _stopwatchFactory = stopwatchFactory,
         _reloadSourcesHelper = reloadSourcesHelper,
         _reassembleHelper = reassembleHelper,
-        _buildRunner = buildRunner,
+        _nativeAssetsBuilder = nativeAssetsBuilder,
         _nativeAssetsYamlFile = nativeAssetsYamlFile,
         _analytics = analytics,
         super(
@@ -139,7 +138,7 @@ class HotRunner extends ResidentRunner {
   String? _sdkName;
   bool? _emulator;
 
-  NativeAssetsBuildRunner? _buildRunner;
+  final HotRunnerNativeAssetsBuilder? _nativeAssetsBuilder;
   final String? _nativeAssetsYamlFile;
 
   String? flavor;
@@ -374,17 +373,12 @@ class HotRunner extends ResidentRunner {
       nativeAssetsYaml = globals.fs.path.toUri(_nativeAssetsYamlFile);
     } else {
       final Uri projectUri = Uri.directory(projectRootPath);
-      _buildRunner ??= NativeAssetsBuildRunnerImpl(
-        projectUri,
-        debuggingOptions.buildInfo.packageConfig,
-        fileSystem,
-        globals.logger,
-      );
-      nativeAssetsYaml = await dryRunNativeAssets(
+      nativeAssetsYaml = await _nativeAssetsBuilder?.dryRun(
         projectUri: projectUri,
         fileSystem: fileSystem,
-        buildRunner: _buildRunner!,
         flutterDevices: flutterDevices,
+        logger: logger,
+        packageConfig: debuggingOptions.buildInfo.packageConfig,
       );
     }
 
@@ -1727,3 +1721,15 @@ class ReasonForCancelling {
     return '$message.\nTry performing a hot restart instead.';
   }
 }
+
+/// An interface to enable overriding native assets build logic in other
+/// build systems.
+abstract class HotRunnerNativeAssetsBuilder {
+  Future<Uri?> dryRun({
+    required Uri projectUri,
+    required FileSystem fileSystem,
+    required List<FlutterDevice> flutterDevices,
+    required PackageConfig packageConfig,
+    required Logger logger,
+  });
+}

packages/flutter_tools/lib/src/test/flutter_platform.dart

@@ -21,6 +21,7 @@ import '../convert.dart';
 import '../dart/language_version.dart';
 import '../device.dart';
 import '../globals.dart' as globals;
+import '../native_assets.dart';
 import '../project.dart';
 import '../test/test_wrapper.dart';
 
@@ -69,6 +70,7 @@ FlutterPlatform installHook({
   String? integrationTestUserIdentifier,
   TestTimeRecorder? testTimeRecorder,
   UriConverter? uriConverter,
+  TestCompilerNativeAssetsBuilder? nativeAssetsBuilder,
 }) {
   assert(enableVmService || enableObservatory || (!debuggingOptions.startPaused && debuggingOptions.hostVmServicePort == null));
 
@@ -99,6 +101,7 @@ FlutterPlatform installHook({
     integrationTestUserIdentifier: integrationTestUserIdentifier,
     testTimeRecorder: testTimeRecorder,
     uriConverter: uriConverter,
+    nativeAssetsBuilder: nativeAssetsBuilder,
   );
   platformPluginRegistration(platform);
   return platform;
@@ -291,6 +294,7 @@ class FlutterPlatform extends PlatformPlugin {
     this.integrationTestUserIdentifier,
     this.testTimeRecorder,
     this.uriConverter,
+    this.nativeAssetsBuilder,
   });
 
   final String shellPath;
@@ -307,6 +311,7 @@ class FlutterPlatform extends PlatformPlugin {
   final FlutterProject? flutterProject;
   final String? icudtlPath;
   final TestTimeRecorder? testTimeRecorder;
+  final TestCompilerNativeAssetsBuilder? nativeAssetsBuilder;
 
   // This can be used by internal projects that require custom logic for converting package: URIs to local paths.
   final UriConverter? uriConverter;
@@ -465,7 +470,13 @@ class FlutterPlatform extends PlatformPlugin {
         // running this with a debugger attached. Initialize the resident
         // compiler in this case.
         if (debuggingOptions.startPaused) {
-          compiler ??= TestCompiler(debuggingOptions.buildInfo, flutterProject, precompiledDillPath: precompiledDillPath, testTimeRecorder: testTimeRecorder);
+          compiler ??= TestCompiler(
+            debuggingOptions.buildInfo,
+            flutterProject,
+            precompiledDillPath: precompiledDillPath,
+            testTimeRecorder: testTimeRecorder,
+            nativeAssetsBuilder: nativeAssetsBuilder,
+          );
           final Uri uri = globals.fs.file(path).uri;
           // Trigger a compilation to initialize the resident compiler.
           unawaited(compiler!.compile(uri));
@@ -487,7 +498,12 @@ class FlutterPlatform extends PlatformPlugin {
         // Integration test device takes care of the compilation.
         if (integrationTestDevice == null) {
           // Lazily instantiate compiler so it is built only if it is actually used.
-          compiler ??= TestCompiler(debuggingOptions.buildInfo, flutterProject, testTimeRecorder: testTimeRecorder);
+          compiler ??= TestCompiler(
+            debuggingOptions.buildInfo,
+            flutterProject,
+            testTimeRecorder: testTimeRecorder,
+            nativeAssetsBuilder: nativeAssetsBuilder,
+          );
           mainDart = await compiler!.compile(globals.fs.file(mainDart).uri);
 
           if (mainDart == null) {

packages/flutter_tools/lib/src/test/runner.dart

@@ -7,6 +7,7 @@ import '../base/file_system.dart';
 import '../base/io.dart';
 import '../device.dart';
 import '../globals.dart' as globals;
+import '../native_assets.dart';
 import '../project.dart';
 import '../web/chrome.dart';
 import '../web/memory_fs.dart';
@@ -53,6 +54,7 @@ abstract class FlutterTestRunner {
     Device? integrationTestDevice,
     String? integrationTestUserIdentifier,
     TestTimeRecorder? testTimeRecorder,
+    TestCompilerNativeAssetsBuilder? nativeAssetsBuilder,
   });
 }
 
@@ -91,6 +93,7 @@ class _FlutterTestRunnerImpl implements FlutterTestRunner {
     Device? integrationTestDevice,
     String? integrationTestUserIdentifier,
     TestTimeRecorder? testTimeRecorder,
+    TestCompilerNativeAssetsBuilder? nativeAssetsBuilder,
   }) async {
     // Configure package:test to use the Flutter engine for child processes.
     final String shellPath = globals.artifacts!.getArtifactPath(Artifact.flutterTester);
@@ -210,6 +213,7 @@ class _FlutterTestRunnerImpl implements FlutterTestRunner {
       integrationTestDevice: integrationTestDevice,
       integrationTestUserIdentifier: integrationTestUserIdentifier,
       testTimeRecorder: testTimeRecorder,
+      nativeAssetsBuilder: nativeAssetsBuilder,
     );
 
     try {

packages/flutter_tools/lib/src/test/test_compiler.dart

@@ -10,18 +10,13 @@ import 'package:meta/meta.dart';
 
 import '../artifacts.dart';
 import '../base/file_system.dart';
-import '../base/os.dart' show HostPlatform;
-import '../base/platform.dart';
 import '../build_info.dart';
 import '../bundle.dart';
 import '../compile.dart';
 import '../flutter_plugins.dart';
 import '../globals.dart' as globals;
-import '../linux/native_assets.dart';
-import '../macos/native_assets.dart';
 import '../native_assets.dart';
 import '../project.dart';
-import '../windows/native_assets.dart';
 import 'test_time_recorder.dart';
 
 /// A request to the [TestCompiler] for recompilation.
@@ -51,9 +46,11 @@ class TestCompiler {
   /// If [testTimeRecorder] is passed, times will be recorded in it.
   TestCompiler(
     this.buildInfo,
-    this.flutterProject,
-    { String? precompiledDillPath, this.testTimeRecorder }
-  ) : testFilePath = precompiledDillPath ?? globals.fs.path.join(
+    this.flutterProject, {
+    String? precompiledDillPath,
+    this.testTimeRecorder,
+    TestCompilerNativeAssetsBuilder? nativeAssetsBuilder,
+  }) : testFilePath = precompiledDillPath ?? globals.fs.path.join(
         flutterProject!.directory.path,
         getBuildDirectory(),
         'test_cache',
@@ -62,7 +59,8 @@ class TestCompiler {
           dartDefines: buildInfo.dartDefines,
           extraFrontEndOptions: buildInfo.extraFrontEndOptions,
         )),
-       shouldCopyDillFile = precompiledDillPath == null {
+       shouldCopyDillFile = precompiledDillPath == null,
+       _nativeAssetsBuilder = nativeAssetsBuilder {
     // Compiler maintains and updates single incremental dill file.
     // Incremental compilation requests done for each test copy that file away
     // for independent execution.
@@ -83,6 +81,7 @@ class TestCompiler {
   final String testFilePath;
   final bool shouldCopyDillFile;
   final TestTimeRecorder? testTimeRecorder;
+  final TestCompilerNativeAssetsBuilder? _nativeAssetsBuilder;
 
 
   ResidentCompiler? compiler;
@@ -170,57 +169,7 @@ class TestCompiler {
         invalidatedRegistrantFiles.add(flutterProject!.dartPluginRegistrant.absolute.uri);
       }
 
-      Uri? nativeAssetsYaml;
-      if (!buildInfo.buildNativeAssets) {
-        nativeAssetsYaml = null;
-      } else {
-        final Uri projectUri = FlutterProject.current().directory.uri;
-        final NativeAssetsBuildRunner buildRunner = NativeAssetsBuildRunnerImpl(
-          projectUri,
-          buildInfo.packageConfig,
-          globals.fs,
-          globals.logger,
-        );
-        if (globals.platform.isMacOS) {
-          (nativeAssetsYaml, _) = await buildNativeAssetsMacOS(
-            buildMode: buildInfo.mode,
-            projectUri: projectUri,
-            flutterTester: true,
-            fileSystem: globals.fs,
-            buildRunner: buildRunner,
-          );
-        } else if (globals.platform.isLinux) {
-          (nativeAssetsYaml, _) = await buildNativeAssetsLinux(
-            buildMode: buildInfo.mode,
-            projectUri: projectUri,
-            flutterTester: true,
-            fileSystem: globals.fs,
-            buildRunner: buildRunner,
-          );
-        } else if (globals.platform.isWindows) {
-          final TargetPlatform targetPlatform;
-          if (globals.os.hostPlatform == HostPlatform.windows_x64) {
-            targetPlatform = TargetPlatform.windows_x64;
-          } else {
-            targetPlatform = TargetPlatform.windows_arm64;
-          }
-          (nativeAssetsYaml, _) = await buildNativeAssetsWindows(
-            buildMode: buildInfo.mode,
-            targetPlatform: targetPlatform,
-            projectUri: projectUri,
-            flutterTester: true,
-            fileSystem: globals.fs,
-            buildRunner: buildRunner,
-          );
-        } else {
-          await ensureNoNativeAssetsOrOsIsSupported(
-            projectUri,
-            const LocalPlatform().operatingSystem,
-            globals.fs,
-            buildRunner,
-          );
-        }
-      }
+      final Uri? nativeAssetsYaml = await _nativeAssetsBuilder?.build(buildInfo);
 
       final CompilerOutput? compilerOutput = await compiler!.recompile(
         request.mainUri,

packages/flutter_tools/test/commands.shard/hermetic/attach_test.dart

@@ -1203,6 +1203,7 @@ class FakeHotRunnerFactory extends Fake implements HotRunnerFactory {
     FlutterProject? flutterProject,
     Analytics? analytics,
     String? nativeAssetsYamlFile,
+    HotRunnerNativeAssetsBuilder? nativeAssetsBuilder,
   }) {
     if (_artifactTester != null) {
       for (final FlutterDevice device in devices) {

packages/flutter_tools/test/commands.shard/hermetic/run_test.dart

@@ -29,6 +29,7 @@ import 'package:flutter_tools/src/macos/macos_ipad_device.dart';
 import 'package:flutter_tools/src/project.dart';
 import 'package:flutter_tools/src/reporting/reporting.dart';
 import 'package:flutter_tools/src/resident_runner.dart';
+import 'package:flutter_tools/src/run_hot.dart';
 import 'package:flutter_tools/src/runner/flutter_command.dart';
 import 'package:flutter_tools/src/vmservice.dart';
 import 'package:test/fake.dart';
@@ -1578,6 +1579,7 @@ class CapturingAppDomain extends AppDomain {
     String? userIdentifier,
     bool enableDevTools = true,
     String? flavor,
+    HotRunnerNativeAssetsBuilder? nativeAssetsBuilder,
   }) async {
     this.userIdentifier = userIdentifier;
     this.enableDevTools = enableDevTools;

packages/flutter_tools/test/commands.shard/hermetic/test_test.dart

@@ -14,6 +14,7 @@ import 'package:flutter_tools/src/cache.dart';
 import 'package:flutter_tools/src/commands/test.dart';
 import 'package:flutter_tools/src/device.dart';
 import 'package:flutter_tools/src/globals.dart' as globals;
+import 'package:flutter_tools/src/native_assets.dart';
 import 'package:flutter_tools/src/project.dart';
 import 'package:flutter_tools/src/runner/flutter_command.dart';
 import 'package:flutter_tools/src/test/coverage_collector.dart';
@@ -1124,6 +1125,7 @@ class FakeFlutterTestRunner implements FlutterTestRunner {
     Device? integrationTestDevice,
     String? integrationTestUserIdentifier,
     TestTimeRecorder? testTimeRecorder,
+    TestCompilerNativeAssetsBuilder? nativeAssetsBuilder,
   }) async {
     lastEnableVmServiceValue = enableVmService;
     lastDebuggingOptionsValue = debuggingOptions;

packages/flutter_tools/test/general.shard/hot_shared.dart

+// Copyright 2014 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 'package:flutter_tools/src/application_package.dart';
+import 'package:flutter_tools/src/asset.dart';
+import 'package:flutter_tools/src/build_info.dart';
+import 'package:flutter_tools/src/build_system/tools/shader_compiler.dart';
+import 'package:flutter_tools/src/compile.dart';
+import 'package:flutter_tools/src/devfs.dart';
+import 'package:flutter_tools/src/device.dart';
+import 'package:flutter_tools/src/project.dart';
+import 'package:flutter_tools/src/resident_runner.dart';
+import 'package:flutter_tools/src/run_hot.dart';
+import 'package:flutter_tools/src/vmservice.dart';
+import 'package:package_config/package_config.dart';
+import 'package:test/fake.dart';
+import 'package:vm_service/vm_service.dart' as vm_service;
+
+class FakeDevFs extends Fake implements DevFS {
+  @override
+  Future<void> destroy() async { }
+
+  @override
+  List<Uri> sources = <Uri>[];
+
+  @override
+  DateTime? lastCompiled;
+
+  @override
+  PackageConfig? lastPackageConfig;
+
+  @override
+  Set<String> assetPathsToEvict = <String>{};
+
+  @override
+  Set<String> shaderPathsToEvict= <String>{};
+
+  @override
+  Set<String> scenePathsToEvict= <String>{};
+
+  @override
+  Uri? baseUri;
+}
+
+class FakeDevice extends Fake implements Device {
+  FakeDevice({
+    TargetPlatform targetPlatform = TargetPlatform.tester,
+  }) : _targetPlatform = targetPlatform;
+
+  final TargetPlatform _targetPlatform;
+
+  bool disposed = false;
+
+  @override
+  bool isSupported() => true;
+
+  @override
+  bool supportsHotReload = true;
+
+  @override
+  bool supportsHotRestart = true;
+
+  @override
+  bool supportsFlutterExit = true;
+
+  @override
+  Future<TargetPlatform> get targetPlatform async => _targetPlatform;
+
+  @override
+  Future<String> get sdkNameAndVersion async => 'Tester';
+
+  @override
+  Future<bool> get isLocalEmulator async => false;
+
+  @override
+  String get name => 'Fake Device';
+
+  @override
+  Future<bool> stopApp(
+    ApplicationPackage? app, {
+    String? userIdentifier,
+  }) async {
+    return true;
+  }
+
+  @override
+  Future<void> dispose() async {
+    disposed = true;
+  }
+}
+
+class FakeFlutterDevice extends Fake implements FlutterDevice {
+  FakeFlutterDevice(this.device);
+
+  bool stoppedEchoingDeviceLog = false;
+  late Future<UpdateFSReport> Function() updateDevFSReportCallback;
+
+  @override
+  final FakeDevice device;
+
+  @override
+  Future<void> stopEchoingDeviceLog() async {
+    stoppedEchoingDeviceLog = true;
+  }
+
+  @override
+  DevFS? devFS = FakeDevFs();
+
+  @override
+  FlutterVmService get vmService => FakeFlutterVmService();
+
+  @override
+  ResidentCompiler? generator;
+
+  @override
+  Future<UpdateFSReport> updateDevFS({
+    Uri? mainUri,
+    String? target,
+    AssetBundle? bundle,
+    DateTime? firstBuildTime,
+    bool bundleFirstUpload = false,
+    bool bundleDirty = false,
+    bool fullRestart = false,
+    String? projectRootPath,
+    String? pathToReload,
+    required String dillOutputPath,
+    required List<Uri> invalidatedFiles,
+    required PackageConfig packageConfig,
+  }) => updateDevFSReportCallback();
+
+  @override
+  TargetPlatform? get targetPlatform => device._targetPlatform;
+}
+
+class TestFlutterDevice extends FlutterDevice {
+  TestFlutterDevice({
+    required Device device,
+    required this.exception,
+    required ResidentCompiler generator,
+  })  : super(device, buildInfo: BuildInfo.debug, generator: generator, developmentShaderCompiler: const FakeShaderCompiler());
+
+  /// The exception to throw when the connect method is called.
+  final Exception exception;
+
+  @override
+  Future<void> connect({
+    ReloadSources? reloadSources,
+    Restart? restart,
+    CompileExpression? compileExpression,
+    GetSkSLMethod? getSkSLMethod,
+    FlutterProject? flutterProject,
+    PrintStructuredErrorLogMethod? printStructuredErrorLogMethod,
+    bool disableServiceAuthCodes = false,
+    bool enableDds = true,
+    bool cacheStartupProfile = false,
+    bool? ipv6 = false,
+    int? hostVmServicePort,
+    int? ddsPort,
+    bool allowExistingDdsInstance = false,
+  }) async {
+    throw exception;
+  }
+}
+
+class TestHotRunnerConfig extends HotRunnerConfig {
+  TestHotRunnerConfig({this.successfulHotRestartSetup, this.successfulHotReloadSetup});
+  bool? successfulHotRestartSetup;
+  bool? successfulHotReloadSetup;
+  bool shutdownHookCalled = false;
+  bool updateDevFSCompleteCalled = false;
+
+  @override
+  Future<bool?> setupHotRestart() async {
+    assert(successfulHotRestartSetup != null, 'setupHotRestart is not expected to be called in this test.');
+    return successfulHotRestartSetup;
+  }
+
+  @override
+  Future<bool?> setupHotReload() async {
+    assert(successfulHotReloadSetup != null, 'setupHotReload is not expected to be called in this test.');
+    return successfulHotReloadSetup;
+  }
+
+  @override
+  void updateDevFSComplete() {
+    updateDevFSCompleteCalled = true;
+  }
+
+  @override
+  Future<void> runPreShutdownOperations() async {
+    shutdownHookCalled = true;
+  }
+}
+
+class FakeResidentCompiler extends Fake implements ResidentCompiler {
+  @override
+  void accept() {}
+}
+
+class FakeFlutterVmService extends Fake implements FlutterVmService {
+  @override
+  vm_service.VmService get service => FakeVmService();
+
+  @override
+  Future<List<FlutterView>> getFlutterViews({bool returnEarly = false, Duration delay = const Duration(milliseconds: 50)}) async {
+    return <FlutterView>[];
+  }
+}
+
+class FakeVmService extends Fake implements vm_service.VmService {
+  @override
+  Future<vm_service.VM> getVM() async => FakeVm();
+}
+
+class FakeVm extends Fake implements vm_service.VM {
+  @override
+  List<vm_service.IsolateRef> get isolates => <vm_service.IsolateRef>[];
+}
+
+class FakeShaderCompiler implements DevelopmentShaderCompiler {
+  const FakeShaderCompiler();
+
+  @override
+  void configureCompiler(TargetPlatform? platform) { }
+
+  @override
+  Future<DevFSContent> recompileShader(DevFSContent inputShader) {
+    throw UnimplementedError();
+  }
+}

packages/flutter_tools/test/general.shard/android/native_assets_test.dart → packages/flutter_tools/test/general.shard/isolated/android/native_assets_test.dart

@@ -5,7 +5,6 @@
 import 'package:file/file.dart';
 import 'package:file/memory.dart';
 import 'package:file_testing/file_testing.dart';
-import 'package:flutter_tools/src/android/native_assets.dart';
 import 'package:flutter_tools/src/artifacts.dart';
 import 'package:flutter_tools/src/base/common.dart';
 import 'package:flutter_tools/src/base/file_system.dart';
@@ -15,15 +14,16 @@ import 'package:flutter_tools/src/build_info.dart';
 import 'package:flutter_tools/src/build_system/build_system.dart';
 import 'package:flutter_tools/src/features.dart';
 import 'package:flutter_tools/src/globals.dart' as globals;
+import 'package:flutter_tools/src/isolated/native_assets/android/native_assets.dart';
 import 'package:native_assets_cli/native_assets_cli_internal.dart'
     as native_assets_cli;
 import 'package:native_assets_cli/native_assets_cli_internal.dart'
     hide BuildMode, Target;
 import 'package:package_config/package_config_types.dart';
 
-import '../../src/common.dart';
-import '../../src/context.dart';
-import '../../src/fakes.dart';
+import '../../../src/common.dart';
+import '../../../src/context.dart';
+import '../../../src/fakes.dart';
 import '../fake_native_assets_build_runner.dart';
 
 void main() {

packages/flutter_tools/test/general.shard/build_system/targets/native_assets_test.dart → packages/flutter_tools/test/general.shard/isolated/build_system/targets/native_assets_test.dart

@@ -12,14 +12,14 @@ import 'package:flutter_tools/src/build_system/build_system.dart';
 import 'package:flutter_tools/src/build_system/exceptions.dart';
 import 'package:flutter_tools/src/build_system/targets/native_assets.dart';
 import 'package:flutter_tools/src/features.dart';
-import 'package:flutter_tools/src/native_assets.dart';
+import 'package:flutter_tools/src/isolated/native_assets/native_assets.dart';
 import 'package:native_assets_cli/native_assets_cli_internal.dart'
     as native_assets_cli;
 import 'package:package_config/package_config.dart' show Package;
 
-import '../../../src/common.dart';
-import '../../../src/context.dart';
-import '../../../src/fakes.dart';
+import '../../../../src/common.dart';
+import '../../../../src/context.dart';
+import '../../../../src/fakes.dart';
 import '../../fake_native_assets_build_runner.dart';
 
 void main() {

packages/flutter_tools/test/general.shard/fake_native_assets_build_runner.dart → packages/flutter_tools/test/general.shard/isolated/fake_native_assets_build_runner.dart

@@ -2,7 +2,11 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-import 'package:flutter_tools/src/native_assets.dart';
+import 'package:file/src/interface/file_system.dart';
+import 'package:flutter_tools/src/base/logger.dart';
+import 'package:flutter_tools/src/isolated/native_assets/native_assets.dart';
+import 'package:flutter_tools/src/resident_runner.dart';
+import 'package:flutter_tools/src/run_hot.dart';
 import 'package:native_assets_builder/native_assets_builder.dart'
     as native_assets_builder;
 import 'package:native_assets_cli/native_assets_cli_internal.dart';
@@ -95,3 +99,25 @@ final class FakeNativeAssetsBuilderResult
   @override
   final bool success;
 }
+
+class FakeHotRunnerNativeAssetsBuilder implements HotRunnerNativeAssetsBuilder {
+  FakeHotRunnerNativeAssetsBuilder(this.buildRunner);
+
+  final NativeAssetsBuildRunner buildRunner;
+
+  @override
+  Future<Uri?> dryRun({
+    required Uri projectUri,
+    required FileSystem fileSystem,
+    required List<FlutterDevice> flutterDevices,
+    required PackageConfig packageConfig,
+    required Logger logger,
+  }) {
+    return dryRunNativeAssets(
+      projectUri: projectUri,
+      fileSystem: fileSystem,
+      buildRunner: buildRunner,
+      flutterDevices: flutterDevices,
+    );
+  }
+}

packages/flutter_tools/test/general.shard/isolated/hot_test.dart

+// Copyright 2014 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 'package:file/memory.dart';
+import 'package:flutter_tools/src/artifacts.dart';
+import 'package:flutter_tools/src/base/file_system.dart';
+import 'package:flutter_tools/src/base/platform.dart';
+import 'package:flutter_tools/src/build_info.dart';
+import 'package:flutter_tools/src/devfs.dart';
+import 'package:flutter_tools/src/device.dart';
+import 'package:flutter_tools/src/features.dart';
+import 'package:flutter_tools/src/resident_devtools_handler.dart';
+import 'package:flutter_tools/src/resident_runner.dart';
+import 'package:flutter_tools/src/run_hot.dart';
+import 'package:native_assets_cli/native_assets_cli_internal.dart'
+    hide BuildMode, Target;
+import 'package:native_assets_cli/native_assets_cli_internal.dart'
+    as native_assets_cli;
+import 'package:package_config/package_config.dart';
+import 'package:unified_analytics/unified_analytics.dart';
+
+import '../../src/common.dart';
+import '../../src/context.dart';
+import '../../src/fakes.dart';
+import '../hot_shared.dart';
+import 'fake_native_assets_build_runner.dart';
+
+void main() {
+  group('native assets', () {
+    late TestHotRunnerConfig testingConfig;
+    late FileSystem fileSystem;
+    late FakeAnalytics fakeAnalytics;
+
+    setUp(() {
+      fileSystem = MemoryFileSystem.test();
+      testingConfig = TestHotRunnerConfig(
+        successfulHotRestartSetup: true,
+      );
+      fakeAnalytics = getInitializedFakeAnalyticsInstance(
+        fs: fileSystem,
+        fakeFlutterVersion: FakeFlutterVersion(),
+      );
+    });
+    testUsingContext('native assets restart', () async {
+      final FakeDevice device = FakeDevice();
+      final FakeFlutterDevice fakeFlutterDevice = FakeFlutterDevice(device);
+      final List<FlutterDevice> devices = <FlutterDevice>[
+        fakeFlutterDevice,
+      ];
+
+      fakeFlutterDevice.updateDevFSReportCallback = () async => UpdateFSReport(
+        success: true,
+        invalidatedSourcesCount: 6,
+        syncedBytes: 8,
+        scannedSourcesCount: 16,
+        compileDuration: const Duration(seconds: 16),
+        transferDuration: const Duration(seconds: 32),
+      );
+
+      (fakeFlutterDevice.devFS! as FakeDevFs).baseUri = Uri.parse('file:///base_uri');
+
+      final FakeNativeAssetsBuildRunner buildRunner = FakeNativeAssetsBuildRunner(
+        packagesWithNativeAssetsResult: <Package>[
+          Package('bar', fileSystem.currentDirectory.uri),
+        ],
+        dryRunResult: FakeNativeAssetsBuilderResult(
+          assets: <Asset>[
+            Asset(
+              id: 'package:bar/bar.dart',
+              linkMode: LinkMode.dynamic,
+              target: native_assets_cli.Target.macOSArm64,
+              path: AssetAbsolutePath(Uri.file('bar.dylib')),
+            ),
+          ],
+        ),
+      );
+
+      final HotRunner hotRunner = HotRunner(
+        devices,
+        debuggingOptions: DebuggingOptions.disabled(BuildInfo.debug),
+        target: 'main.dart',
+        devtoolsHandler: createNoOpHandler,
+        nativeAssetsBuilder: FakeHotRunnerNativeAssetsBuilder(buildRunner),
+        analytics: fakeAnalytics,
+      );
+      final OperationResult result = await hotRunner.restart(fullRestart: true);
+      expect(result.isOk, true);
+      // Hot restart does not require rerunning anything for native assets.
+      // The previous native assets mapping should be used.
+      expect(buildRunner.buildInvocations, 0);
+      expect(buildRunner.dryRunInvocations, 0);
+      expect(buildRunner.hasPackageConfigInvocations, 0);
+      expect(buildRunner.packagesWithNativeAssetsInvocations, 0);
+    }, overrides: <Type, Generator>{
+      HotRunnerConfig: () => testingConfig,
+      Artifacts: () => Artifacts.test(),
+      FileSystem: () => fileSystem,
+      Platform: () => FakePlatform(),
+      ProcessManager: () => FakeProcessManager.empty(),
+      FeatureFlags: () => TestFeatureFlags(isNativeAssetsEnabled: true, isMacOSEnabled: true),
+    });
+
+    testUsingContext('native assets run unsupported', () async {
+      final FakeDevice device = FakeDevice(targetPlatform: TargetPlatform.fuchsia_arm64);
+      final FakeFlutterDevice fakeFlutterDevice = FakeFlutterDevice(device);
+      final List<FlutterDevice> devices = <FlutterDevice>[
+        fakeFlutterDevice,
+      ];
+
+      fakeFlutterDevice.updateDevFSReportCallback = () async => UpdateFSReport(
+        success: true,
+        invalidatedSourcesCount: 6,
+        syncedBytes: 8,
+        scannedSourcesCount: 16,
+        compileDuration: const Duration(seconds: 16),
+        transferDuration: const Duration(seconds: 32),
+      );
+
+      (fakeFlutterDevice.devFS! as FakeDevFs).baseUri = Uri.parse('file:///base_uri');
+
+      final FakeNativeAssetsBuildRunner buildRunner = FakeNativeAssetsBuildRunner(
+        packagesWithNativeAssetsResult: <Package>[
+          Package('bar', fileSystem.currentDirectory.uri),
+        ],
+        dryRunResult: FakeNativeAssetsBuilderResult(
+          assets: <Asset>[
+            Asset(
+              id: 'package:bar/bar.dart',
+              linkMode: LinkMode.dynamic,
+              target: native_assets_cli.Target.macOSArm64,
+              path: AssetAbsolutePath(Uri.file('bar.dylib')),
+            ),
+          ],
+        ),
+      );
+
+      final HotRunner hotRunner = HotRunner(
+        devices,
+        debuggingOptions: DebuggingOptions.disabled(BuildInfo.debug),
+        target: 'main.dart',
+        devtoolsHandler: createNoOpHandler,
+        nativeAssetsBuilder: FakeHotRunnerNativeAssetsBuilder(buildRunner),
+        analytics: fakeAnalytics,
+      );
+      expect(
+        () => hotRunner.run(),
+        throwsToolExit( message:
+          'Package(s) bar require the native assets feature. '
+          'This feature has not yet been implemented for `TargetPlatform.fuchsia_arm64`. '
+          'For more info see https://github.com/flutter/flutter/issues/129757.',
+        )
+      );
+
+    }, overrides: <Type, Generator>{
+      HotRunnerConfig: () => testingConfig,
+      Artifacts: () => Artifacts.test(),
+      FileSystem: () => fileSystem,
+      Platform: () => FakePlatform(),
+      ProcessManager: () => FakeProcessManager.empty(),
+      FeatureFlags: () => TestFeatureFlags(isNativeAssetsEnabled: true, isMacOSEnabled: true),
+    });
+  });
+}

packages/flutter_tools/test/general.shard/ios/native_assets_test.dart → packages/flutter_tools/test/general.shard/isolated/ios/native_assets_test.dart

@@ -13,16 +13,16 @@ import 'package:flutter_tools/src/build_info.dart';
 import 'package:flutter_tools/src/build_system/build_system.dart';
 import 'package:flutter_tools/src/features.dart';
 import 'package:flutter_tools/src/globals.dart' as globals;
-import 'package:flutter_tools/src/ios/native_assets.dart';
+import 'package:flutter_tools/src/isolated/native_assets/ios/native_assets.dart';
 import 'package:native_assets_cli/native_assets_cli_internal.dart'
     hide BuildMode, Target;
 import 'package:native_assets_cli/native_assets_cli_internal.dart'
     as native_assets_cli;
 import 'package:package_config/package_config_types.dart';
 
-import '../../src/common.dart';
-import '../../src/context.dart';
-import '../../src/fakes.dart';
+import '../../../src/common.dart';
+import '../../../src/context.dart';
+import '../../../src/fakes.dart';
 import '../fake_native_assets_build_runner.dart';
 
 void main() {

packages/flutter_tools/test/general.shard/linux/native_assets_test.dart → packages/flutter_tools/test/general.shard/isolated/linux/native_assets_test.dart

@@ -15,17 +15,17 @@ import 'package:flutter_tools/src/build_system/build_system.dart';
 import 'package:flutter_tools/src/dart/package_map.dart';
 import 'package:flutter_tools/src/features.dart';
 import 'package:flutter_tools/src/globals.dart' as globals;
-import 'package:flutter_tools/src/linux/native_assets.dart';
-import 'package:flutter_tools/src/native_assets.dart';
+import 'package:flutter_tools/src/isolated/native_assets/linux/native_assets.dart';
+import 'package:flutter_tools/src/isolated/native_assets/native_assets.dart';
 import 'package:native_assets_cli/native_assets_cli_internal.dart'
     hide BuildMode, Target;
 import 'package:native_assets_cli/native_assets_cli_internal.dart'
     as native_assets_cli;
 import 'package:package_config/package_config_types.dart';
 
-import '../../src/common.dart';
-import '../../src/context.dart';
-import '../../src/fakes.dart';
+import '../../../src/common.dart';
+import '../../../src/context.dart';
+import '../../../src/fakes.dart';
 import '../fake_native_assets_build_runner.dart';
 
 void main() {

packages/flutter_tools/test/general.shard/macos/native_assets_host_test.dart → packages/flutter_tools/test/general.shard/isolated/macos/native_assets_host_test.dart

@@ -2,9 +2,9 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-import 'package:flutter_tools/src/macos/native_assets_host.dart';
+import 'package:flutter_tools/src/isolated/native_assets/macos/native_assets_host.dart';
 
-import '../../src/common.dart';
+import '../../../src/common.dart';
 
 void main() {
   test('framework name', () {

packages/flutter_tools/test/general.shard/macos/native_assets_test.dart → packages/flutter_tools/test/general.shard/isolated/macos/native_assets_test.dart

@@ -13,17 +13,17 @@ import 'package:flutter_tools/src/build_system/build_system.dart';
 import 'package:flutter_tools/src/dart/package_map.dart';
 import 'package:flutter_tools/src/features.dart';
 import 'package:flutter_tools/src/globals.dart' as globals;
-import 'package:flutter_tools/src/macos/native_assets.dart';
-import 'package:flutter_tools/src/native_assets.dart';
+import 'package:flutter_tools/src/isolated/native_assets/macos/native_assets.dart';
+import 'package:flutter_tools/src/isolated/native_assets/native_assets.dart';
 import 'package:native_assets_cli/native_assets_cli_internal.dart'
     hide BuildMode, Target;
 import 'package:native_assets_cli/native_assets_cli_internal.dart'
     as native_assets_cli;
 import 'package:package_config/package_config_types.dart';
 
-import '../../src/common.dart';
-import '../../src/context.dart';
-import '../../src/fakes.dart';
+import '../../../src/common.dart';
+import '../../../src/context.dart';
+import '../../../src/fakes.dart';
 import '../fake_native_assets_build_runner.dart';
 
 void main() {

packages/flutter_tools/test/general.shard/isolated/resident_runner_test.dart

+// Copyright 2014 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 'package:flutter_tools/src/build_info.dart';
+import 'package:flutter_tools/src/device.dart';
+import 'package:flutter_tools/src/features.dart';
+import 'package:flutter_tools/src/globals.dart' as globals;
+import 'package:flutter_tools/src/resident_devtools_handler.dart';
+import 'package:flutter_tools/src/resident_runner.dart';
+import 'package:flutter_tools/src/run_hot.dart';
+import 'package:unified_analytics/unified_analytics.dart';
+
+import '../../src/common.dart';
+import '../../src/context.dart';
+import '../../src/fake_vm_services.dart';
+import '../../src/fakes.dart';
+import '../../src/testbed.dart';
+import '../resident_runner_helpers.dart';
+import 'fake_native_assets_build_runner.dart';
+
+void main() {
+  late Testbed testbed;
+  late FakeFlutterDevice flutterDevice;
+  late FakeDevFS devFS;
+  late ResidentRunner residentRunner;
+  late FakeDevice device;
+  late FakeAnalytics fakeAnalytics;
+  FakeVmServiceHost? fakeVmServiceHost;
+
+  setUp(() {
+    testbed = Testbed(setup: () {
+      fakeAnalytics = getInitializedFakeAnalyticsInstance(
+        fs: globals.fs,
+        fakeFlutterVersion: FakeFlutterVersion(),
+      );
+
+      globals.fs.file('.packages')
+        .writeAsStringSync('\n');
+      globals.fs.file(globals.fs.path.join('build', 'app.dill'))
+        ..createSync(recursive: true)
+        ..writeAsStringSync('ABC');
+      residentRunner = HotRunner(
+        <FlutterDevice>[
+          flutterDevice,
+        ],
+        stayResident: false,
+        debuggingOptions: DebuggingOptions.enabled(BuildInfo.debug),
+        target: 'main.dart',
+        devtoolsHandler: createNoOpHandler,
+        analytics: fakeAnalytics,
+      );
+    });
+    device = FakeDevice();
+    devFS = FakeDevFS();
+    flutterDevice = FakeFlutterDevice()
+      ..testUri = testUri
+      ..vmServiceHost = (() => fakeVmServiceHost)
+      ..device = device
+      ..fakeDevFS = devFS;
+  });
+
+  testUsingContext(
+      'use the nativeAssetsYamlFile when provided',
+      () => testbed.run(() async {
+        final FakeDevice device = FakeDevice(
+          targetPlatform: TargetPlatform.darwin,
+          sdkNameAndVersion: 'Macos',
+        );
+        final FakeResidentCompiler residentCompiler = FakeResidentCompiler();
+        final FakeFlutterDevice flutterDevice = FakeFlutterDevice()
+          ..testUri = testUri
+          ..vmServiceHost = (() => fakeVmServiceHost)
+          ..device = device
+          ..fakeDevFS = devFS
+          ..targetPlatform = TargetPlatform.darwin
+          ..generator = residentCompiler;
+
+        fakeVmServiceHost = FakeVmServiceHost(requests: <VmServiceExpectation>[
+          listViews,
+          listViews,
+        ]);
+        globals.fs
+            .file(globals.fs.path.join('lib', 'main.dart'))
+            .createSync(recursive: true);
+        final FakeNativeAssetsBuildRunner buildRunner = FakeNativeAssetsBuildRunner();
+        residentRunner = HotRunner(
+          <FlutterDevice>[
+            flutterDevice,
+          ],
+          stayResident: false,
+          debuggingOptions: DebuggingOptions.enabled(const BuildInfo(
+            BuildMode.debug,
+            '',
+            treeShakeIcons: false,
+            trackWidgetCreation: true,
+          )),
+          target: 'main.dart',
+          devtoolsHandler: createNoOpHandler,
+          nativeAssetsBuilder: FakeHotRunnerNativeAssetsBuilder(buildRunner),
+          analytics: fakeAnalytics,
+          nativeAssetsYamlFile: 'foo.yaml',
+        );
+
+        final int? result = await residentRunner.run();
+        expect(result, 0);
+
+        expect(buildRunner.buildInvocations, 0);
+        expect(buildRunner.dryRunInvocations, 0);
+        expect(buildRunner.hasPackageConfigInvocations, 0);
+        expect(buildRunner.packagesWithNativeAssetsInvocations, 0);
+
+        expect(residentCompiler.recompileCalled, true);
+        expect(residentCompiler.receivedNativeAssetsYaml, globals.fs.path.toUri('foo.yaml'));
+      }),
+      overrides: <Type, Generator>{
+        ProcessManager: () => FakeProcessManager.any(),
+        FeatureFlags: () => TestFeatureFlags(isNativeAssetsEnabled: true, isMacOSEnabled: true),
+      });
+}

packages/flutter_tools/test/general.shard/windows/native_assets_test.dart → packages/flutter_tools/test/general.shard/isolated/windows/native_assets_test.dart

@@ -14,17 +14,17 @@ import 'package:flutter_tools/src/build_system/build_system.dart';
 import 'package:flutter_tools/src/dart/package_map.dart';
 import 'package:flutter_tools/src/features.dart';
 import 'package:flutter_tools/src/globals.dart' as globals;
-import 'package:flutter_tools/src/native_assets.dart';
-import 'package:flutter_tools/src/windows/native_assets.dart';
+import 'package:flutter_tools/src/isolated/native_assets/native_assets.dart';
+import 'package:flutter_tools/src/isolated/native_assets/windows/native_assets.dart';
 import 'package:native_assets_cli/native_assets_cli_internal.dart'
     hide BuildMode, Target;
 import 'package:native_assets_cli/native_assets_cli_internal.dart'
     as native_assets_cli;
 import 'package:package_config/package_config_types.dart';
 
-import '../../src/common.dart';
-import '../../src/context.dart';
-import '../../src/fakes.dart';
+import '../../../src/common.dart';
+import '../../../src/context.dart';
+import '../../../src/fakes.dart';
 import '../fake_native_assets_build_runner.dart';
 
 void main() {

packages/flutter_tools/test/integration.shard/native_assets_test.dart → packages/flutter_tools/test/integration.shard/isolated/native_assets_test.dart

@@ -21,9 +21,9 @@ import 'package:flutter_tools/src/base/logger.dart';
 import 'package:flutter_tools/src/base/os.dart';
 import 'package:native_assets_cli/native_assets_cli_internal.dart';
 
-import '../src/common.dart';
-import 'test_utils.dart' show ProcessResultMatcher, fileSystem, platform;
-import 'transition_test_utils.dart';
+import '../../src/common.dart';
+import '../test_utils.dart' show ProcessResultMatcher, fileSystem, platform;
+import '../transition_test_utils.dart';
 
 final String hostOs = platform.operatingSystem;