binary file r/w

lib/src/file_actor.dart

@@ -1,4 +1,5 @@
 import 'dart:io';
+import 'dart:typed_data';
 import 'package:actors/actors.dart';
 
 sealed class FileMessage {
@@ -16,6 +17,17 @@ final class SaveFile extends FileMessage {
   const SaveFile(this.path, this.content);
 }
 
+final class LoadBinaryFile extends FileMessage {
+  final String path;
+  const LoadBinaryFile(this.path);
+}
+
+final class SaveBinaryFile extends FileMessage {
+  final String path;
+  final Uint8List bytes;
+  const SaveBinaryFile(this.path, this.bytes);
+}
+
 sealed class FileResult {
   const FileResult();
 }
@@ -29,11 +41,20 @@ final class FileSaved extends FileResult {
   const FileSaved();
 }
 
+final class BinaryFileLoaded extends FileResult {
+  final Uint8List bytes;
+  const BinaryFileLoaded(this.bytes);
+}
+
 class FileActor with Handler<FileMessage, FileResult> {
   @override
   Future<FileResult> handle(FileMessage message) => switch (message) {
         LoadFile(:final path) => File(path).readAsString().then(FileLoaded.new),
         SaveFile(:final path, :final content) =>
           File(path).writeAsString(content).then((_) => const FileSaved()),
+        LoadBinaryFile(:final path) =>
+          File(path).readAsBytes().then(BinaryFileLoaded.new),
+        SaveBinaryFile(:final path, :final bytes) =>
+          File(path).writeAsBytes(bytes).then((_) => const FileSaved()),
       };
 }

test/file_actor_test.dart

@@ -1,4 +1,5 @@
 import 'dart:io';
+import 'dart:typed_data';
 import 'package:actors/actors.dart';
 import 'package:swarm/swarm.dart';
 import 'package:test/test.dart';
@@ -38,5 +39,21 @@ void main() {
         throwsA(isA<PathNotFoundException>()),
       );
     });
+
+    test('saves binary file', () async {
+      final path = '${tempDir.path}/data.bin';
+      final bytes = Uint8List.fromList([0x00, 0xFF, 0x89, 0x50, 0x4E, 0x47]);
+      final result = await actor.send(SaveBinaryFile(path, bytes));
+      expect(result, isA<FileSaved>());
+    });
+
+    test('loads a saved binary file', () async {
+      final path = '${tempDir.path}/data.bin';
+      final bytes = Uint8List.fromList([0x00, 0xFF, 0x89, 0x50, 0x4E, 0x47]);
+      await actor.send(SaveBinaryFile(path, bytes));
+      final result = await actor.send(LoadBinaryFile(path));
+      expect(result, isA<BinaryFileLoaded>());
+      expect((result as BinaryFileLoaded).bytes, equals(bytes));
+    });
   });
 }