Refactor add link asset test

pkgs/native_assets_builder/test_data/add_asset_link/bin/add_asset_link.dart

@@ -2,8 +2,8 @@
 // for details. 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:io';
+import 'package:add_asset_link/add_asset_link.dart';
 
 void main(List<String> arguments) {
-  print(File('assets/test.txt').readAsStringSync());
+  print('Hello world: ${MyMath.add(3, 4)}!');
 }

pkgs/native_assets_builder/test_data/add_asset_link/hook/build.dart

@@ -0,0 +1,31 @@
+// Copyright (c) 2024, the Dart project authors.  Please see the AUTHORS file
+// for details. 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:logging/logging.dart';
+import 'package:native_assets_cli/native_assets_cli.dart';
+import 'package:native_toolchain_c/native_toolchain_c.dart';
+
+void main(List<String> arguments) async {
+  await build(arguments, (config, output) async {
+    final logger = Logger('')
+      ..level = Level.ALL
+      ..onRecord.listen((record) {
+        print('${record.level.name}: ${record.time}: ${record.message}');
+      });
+    await CBuilder.library(
+      name: 'add',
+      assetName: 'dylib_add_build',
+      sources: [
+        'src/native_add.c',
+      ],
+      dartBuildFiles: ['hook/build.dart'],
+      linkModePreference: LinkModePreference.dynamic,
+    ).run(
+      buildConfig: config,
+      buildOutput: output,
+      logger: logger,
+      linkInPackage: 'add_asset_link',
+    );
+  });
+}

pkgs/native_assets_builder/test_data/add_asset_link/hook/link.dart

@@ -6,12 +6,16 @@ import 'package:native_assets_cli/native_assets_cli.dart';
 
 void main(List<String> arguments) async {
   await link(arguments, (config, output) async {
+    final built_dylib = config.assets.first as NativeCodeAsset;
     output
       ..addAsset(
-        DataAsset(
+        NativeCodeAsset(
           package: 'add_asset_link',
-          name: 'test_text_file',
-          file: config.packageRoot.resolve('assets/test.txt'),
+          name: 'dylib_add_link',
+          linkMode: built_dylib.linkMode,
+          os: built_dylib.os,
+          architecture: built_dylib.architecture,
+          file: built_dylib.file,
         ),
       )
       ..addDependency(config.packageRoot.resolve('hook/link.dart'));

pkgs/native_assets_builder/test_data/add_asset_link/lib/add_asset_link.dart

@@ -0,0 +1,5 @@
+// Copyright (c) 2024, the Dart project authors.  Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+export 'src/add_asset_link.dart';

pkgs/native_assets_builder/test_data/add_asset_link/lib/src/add_asset_link.dart

@@ -0,0 +1,9 @@
+// Copyright (c) 2024, the Dart project authors.  Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+import 'add_asset_link_bindings.dart' as bindings;
+
+class MyMath {
+  static int add(int a, int b) => bindings.add(a, b);
+}

pkgs/native_assets_builder/test_data/add_asset_link/lib/src/add_asset_link_bindings.dart

@@ -0,0 +1,12 @@
+// Copyright (c) 2024, the Dart project authors.  Please see the AUTHORS file
+// for details. 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:ffi' as ffi;
+
+@ffi.Native<ffi.Int32 Function(ffi.Int32, ffi.Int32)>(
+    assetId: 'package:add_asset_link/dylib_add_link')
+external int add(
+  int a,
+  int b,
+);

pkgs/native_assets_builder/test_data/add_asset_link/pubspec.yaml

@@ -13,6 +13,9 @@ dependencies:
   meta: ^1.12.0
   native_assets_cli:
     path: ../../../native_assets_cli/
+  # native_toolchain_c: ^0.4.0
+  native_toolchain_c:
+    path: ../../../native_toolchain_c/
 
 dev_dependencies:
   lints: ^3.0.0

pkgs/native_assets_builder/test_data/add_asset_link/src/native_add.c

@@ -0,0 +1,9 @@
+// Copyright (c) 2024, the Dart project authors.  Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+#include "native_add.h"
+
+MYLIB_EXPORT int32_t add(int32_t a, int32_t b) {
+   return a + b;
+}

pkgs/native_assets_builder/test_data/add_asset_link/src/native_add.h

@@ -0,0 +1,13 @@
+// Copyright (c) 2024, the Dart project authors.  Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+#include <stdint.h>
+
+#if _WIN32
+#define MYLIB_EXPORT __declspec(dllexport)
+#else
+#define MYLIB_EXPORT
+#endif
+
+MYLIB_EXPORT int32_t add(int32_t a, int32_t b);

pkgs/native_assets_builder/test_data/manifest.yaml

@@ -69,7 +69,11 @@
 - drop_dylib_link/hook/build.dart
 - drop_dylib_link/bin/drop_dylib_link.dart
 - add_asset_link/pubspec.yaml
-- add_asset_link/assets/test.txt
-- add_asset_link/README.md
 - add_asset_link/hook/link.dart
 - add_asset_link/bin/add_asset_link.dart
+- add_asset_link/lib/add_asset_link.dart
+- add_asset_link/lib/src/add_asset_link.dart
+- add_asset_link/lib/src/add_asset_link_bindings.dart
+- add_asset_link/src/native_add.h
+- add_asset_link/src/native_add.c
+- add_asset_link/hook/build.dart