test: native replay integration binding

flutter/lib/src/integrations/native_sdk_integration.dart

@@ -20,7 +20,7 @@ class NativeSdkIntegration implements Integration<SentryFlutterOptions> {
     }
 
     try {
-      await _native.init(options);
+      await _native.init(hub);
       options.sdk.addIntegration('nativeSdkIntegration');
     } catch (exception, stackTrace) {
       options.logger(

flutter/lib/src/native/java/sentry_native_java.dart

@@ -1,4 +1,3 @@
-import 'dart:io';
 import 'dart:ui';
 
 import 'package:meta/meta.dart';
@@ -14,16 +13,13 @@ import '../sentry_native_channel.dart';
 @internal
 class SentryNativeJava extends SentryNativeChannel {
   ScreenshotRecorder? _replayRecorder;
-  late final SentryFlutterOptions _options;
   SentryNativeJava(super.options, super.channel);
 
   @override
-  Future<void> init(SentryFlutterOptions options) async {
+  Future<void> init(Hub hub) async {
     // We only need these when replay is enabled (session or error capture)
     // so let's set it up conditionally. This allows Dart to trim the code.
     if (options.experimental.replay.isEnabled) {
-      _options = options;
-
       // We only need the integration when error-replay capture is enabled.
       if ((options.experimental.replay.errorSampleRate ?? 0) > 0) {
         options.addEventProcessor(ReplayEventProcessor(this));
@@ -44,7 +40,7 @@ class SentryNativeJava extends SentryNativeChannel {
               ),
             );
 
-            Sentry.configureScope((s) {
+            hub.configureScope((s) {
               // ignore: invalid_use_of_internal_member
               s.replayId = replayId;
             });
@@ -54,7 +50,7 @@ class SentryNativeJava extends SentryNativeChannel {
             await _replayRecorder?.stop();
             _replayRecorder = null;
 
-            Sentry.configureScope((s) {
+            hub.configureScope((s) {
               // ignore: invalid_use_of_internal_member
               s.replayId = null;
             });
@@ -72,7 +68,14 @@ class SentryNativeJava extends SentryNativeChannel {
       });
     }
 
-    return super.init(options);
+    return super.init(hub);
+  }
+
+  @override
+  Future<void> close() async {
+    await _replayRecorder?.stop();
+    _replayRecorder = null;
+    return super.close();
   }
 
   void _startRecorder(String cacheDir, ScreenshotRecorderConfig config) {
@@ -89,33 +92,35 @@ class SentryNativeJava extends SentryNativeChannel {
         final timestamp = DateTime.now().millisecondsSinceEpoch;
         final filePath = "$cacheDir/$timestamp.png";
 
-        _options.logger(
+        options.logger(
             SentryLevel.debug,
             'Replay: Saving screenshot to $filePath ('
             '${image.width}x${image.height} pixels, '
             '${imageData.lengthInBytes} bytes)');
-        await File(filePath).writeAsBytes(imageData.buffer.asUint8List());
-
         try {
+          await options.fileSystem
+              .file(filePath)
+              .writeAsBytes(imageData.buffer.asUint8List(), flush: true);
+
           await channel.invokeMethod(
             'addReplayScreenshot',
             {'path': filePath, 'timestamp': timestamp},
           );
         } catch (error, stackTrace) {
-          _options.logger(
+          options.logger(
             SentryLevel.error,
             'Native call `addReplayScreenshot` failed',
             exception: error,
             stackTrace: stackTrace,
           );
+          // ignore: invalid_use_of_internal_member
+          if (options.automatedTestMode) {
+            rethrow;
+          }
         }
       }
     };
 
-    _replayRecorder = ScreenshotRecorder(
-      config,
-      callback,
-      _options,
-    )..start();
+    _replayRecorder = ScreenshotRecorder(config, callback, options)..start();
   }
 }

flutter/lib/src/native/sentry_native_binding.dart

@@ -10,7 +10,7 @@ import 'native_frames.dart';
 /// Provide typed methods to access native layer.
 @internal
 abstract class SentryNativeBinding {
-  Future<void> init(SentryFlutterOptions options);
+  Future<void> init(Hub hub);
 
   Future<void> close();
 

flutter/lib/src/native/sentry_native_channel.dart

@@ -29,8 +29,7 @@ class SentryNativeChannel
       : channel = SentrySafeMethodChannel(channel, options);
 
   @override
-  Future<void> init(SentryFlutterOptions options) async {
-    assert(this.options == options);
+  Future<void> init(Hub hub) async {
     return channel.invokeMethod('initNativeSdk', <String, dynamic>{
       'dsn': options.dsn,
       'debug': options.debug,

flutter/lib/src/replay/recorder.dart

@@ -19,13 +19,16 @@ class ScreenshotRecorder {
   final ScreenshotRecorderCallback _callback;
   final SentryLogger _logger;
   final SentryReplayOptions _options;
+  final bool rethrowExceptions;
   WidgetFilter? _widgetFilter;
   late final Scheduler _scheduler;
   bool warningLogged = false;
 
   ScreenshotRecorder(this._config, this._callback, SentryFlutterOptions options)
       : _logger = options.logger,
-        _options = options.experimental.replay {
+        _options = options.experimental.replay,
+        // ignore: invalid_use_of_internal_member
+        rethrowExceptions = options.automatedTestMode {
     final frameDuration = Duration(milliseconds: 1000 ~/ _config.frameRate);
     _scheduler = Scheduler(frameDuration, _capture,
         options.bindingUtils.instance!.addPostFrameCallback);
@@ -121,6 +124,9 @@ class ScreenshotRecorder {
     } catch (e, stackTrace) {
       _logger(SentryLevel.error, "Replay: failed to capture screenshot.",
           exception: e, stackTrace: stackTrace);
+      if (rethrowExceptions) {
+        rethrow;
+      }
     }
   }
 

flutter/lib/src/sentry_flutter_options.dart

@@ -1,5 +1,7 @@
 import 'dart:async';
 
+import 'package:file/file.dart';
+import 'package:file/local.dart';
 import 'package:meta/meta.dart' as meta;
 import 'package:sentry/sentry.dart';
 import 'package:flutter/widgets.dart';
@@ -329,6 +331,9 @@ class SentryFlutterOptions extends SentryOptions {
   /// The [navigatorKey] is used to add information of the currently used locale to the contexts.
   GlobalKey<NavigatorState>? navigatorKey;
 
+  @meta.internal
+  FileSystem fileSystem = LocalFileSystem();
+
   /// Configuration of experimental features that may change or be removed
   /// without prior notice. Additionally, these features may not be ready for
   /// production use yet.

flutter/pubspec.yaml

@@ -27,6 +27,7 @@ dependencies:
   package_info_plus: '>=1.0.0'
   meta: ^1.3.0
   ffi: ^2.0.0
+  file: '>=6.1.4'
 
 dev_dependencies:
   build_runner: ^2.4.2

flutter/test/integrations/init_native_sdk_test.dart

@@ -8,6 +8,7 @@ import 'package:sentry_flutter/src/native/sentry_native_channel.dart';
 import 'package:sentry_flutter/src/version.dart';
 
 import '../mocks.dart';
+import '../mocks.mocks.dart';
 
 void main() {
   late Fixture fixture;
@@ -25,7 +26,7 @@ void main() {
     });
     var sut = fixture.getSut(channel);
 
-    await sut.init(fixture.options);
+    await sut.init(MockHub());
 
     channel.setMethodCallHandler(null);
 
@@ -115,7 +116,7 @@ void main() {
     fixture.options.sdk.addIntegration('foo');
     fixture.options.sdk.addPackage('bar', '1');
 
-    await sut.init(fixture.options);
+    await sut.init(MockHub());
 
     channel.setMethodCallHandler(null);
 

flutter/test/integrations/native_sdk_integration_test.dart

@@ -60,7 +60,7 @@ void main() {
 
 class _ThrowingMockSentryNative extends MockSentryNativeBinding {
   @override
-  Future<void> init(SentryFlutterOptions? options) async {
+  Future<void> init(Hub? hub) async {
     throw Exception();
   }
 }

flutter/test/mocks.dart

@@ -206,3 +206,32 @@ final fakeFrameDurations = [
   Duration(milliseconds: 40),
   Duration(milliseconds: 710),
 ];
+
+@GenerateMocks([Callbacks])
+abstract class Callbacks {
+  Future<Object?>? methodCallHandler(String method, [dynamic arguments]);
+}
+
+class NativeChannelFixture {
+  late final MethodChannel channel;
+  late final Future<Object?>? Function(String method, [dynamic arguments])
+      handler;
+  static TestDefaultBinaryMessenger get _messenger =>
+      TestDefaultBinaryMessengerBinding.instance.defaultBinaryMessenger;
+
+  NativeChannelFixture() {
+    TestWidgetsFlutterBinding.ensureInitialized();
+    channel = MethodChannel('test.channel', StandardMethodCodec(), _messenger);
+    handler = MockCallbacks().methodCallHandler;
+    _messenger.setMockMethodCallHandler(
+        channel, (call) => handler(call.method, call.arguments));
+  }
+
+  // Mock this call as if it was invoked by the native side.
+  Future<ByteData?> invokeFromNative(String method, [dynamic arguments]) async {
+    final call =
+        StandardMethodCodec().encodeMethodCall(MethodCall(method, arguments));
+    return _messenger.handlePlatformMessage(
+        channel.name, call, (ByteData? data) {});
+  }
+}