Return action result in restorePosition

Author: mgenware

lib/src/random_access_source.dart

@@ -61,10 +61,10 @@ abstract class RandomAccessSource {
   Future<void> close();
 
   /// Restores the position after executing the given [action].
-  Future<void> restorePosition<T>(Future<T> Function() action) async {
+  Future<T> restorePosition<T>(Future<T> Function() action) async {
     final currentPosition = await position();
     try {
-      await action();
+      return await action();
     } finally {
       await seek(currentPosition);
     }

pubspec.yaml

@@ -1,6 +1,6 @@
 name: random_access_source
 description: A shared interface for common random access data.
-version: 4.2.0
+version: 4.2.1
 repository: https://github.com/flutter-cavalry/random_access_source
 
 environment:

test/raf_test.dart

@@ -115,12 +115,14 @@ void main() {
     await src.seek(10);
     expect(await src.position(), 10);
 
-    await src.restorePosition(() async {
+    final res1 = await src.restorePosition(() async {
       expect(await src.position(), 10);
       expect(await src.readByte(), flutterIcon[10]);
       expect(await src.position(), 11);
+      return 'test1';
     });
     expect(await src.position(), 10);
+    expect(res1, 'test1');
 
     try {
       await src.restorePosition(() async {