fix: fix setupRemoteVideoEx not call correctly

lib/src/impl/agora_rtc_engine_impl.dart

@@ -207,10 +207,10 @@ class RtcEngineImpl extends rtc_engine_ex_binding.RtcEngineExImpl
   @internal
   final MethodChannel engineMethodChannel = const MethodChannel('agora_rtc_ng');
 
-  static RtcEngineEx create() {
+  static RtcEngineEx create({IrisMethodChannel? irisMethodChannel}) {
     if (_instance != null) return _instance!;
 
-    _instance = RtcEngineImpl._(IrisMethodChannel());
+    _instance = RtcEngineImpl._(irisMethodChannel ?? IrisMethodChannel());
 
     return _instance!;
   }

lib/src/impl/video_view_controller_impl.dart

@@ -92,7 +92,12 @@ mixin VideoViewControllerBaseMixin implements VideoViewControllerBase {
       mediaPlayerId: canvas.mediaPlayerId,
     );
     if (canvas.uid != 0) {
-      await rtcEngine.setupRemoteVideo(videoCanvas);
+      if (connection != null && rtcEngine is RtcEngineEx) {
+        await (rtcEngine as RtcEngineEx)
+            .setupRemoteVideoEx(canvas: videoCanvas, connection: connection!);
+      } else {
+        await rtcEngine.setupRemoteVideo(videoCanvas);
+      }
     } else {
       await rtcEngine.setupLocalVideo(videoCanvas);
     }

lib/src/render/video_view_controller.dart

@@ -71,7 +71,9 @@ class VideoViewController
       required this.connection,
       this.useFlutterTexture = false,
       this.useAndroidSurfaceView = false})
-      : assert(connection.channelId != null);
+      : assert(canvas.uid != null && canvas.uid != 0,
+            'Remote uid can not be null or 0'),
+        assert(connection.channelId != null);
 
   @override
   final RtcEngine rtcEngine;

test_shard/integration_test_app/integration_test/fake/fake_iris_method_channel.dart

@@ -0,0 +1,35 @@
+import 'package:flutter/foundation.dart';
+import 'package:iris_method_channel/iris_method_channel.dart';
+
+class FakeIrisMethodChannel extends IrisMethodChannel {
+  final List<IrisMethodCall> methodCallQueue = [];
+
+  @override
+  Future<void> initilize(NativeBindingsProvider provider) async {}
+
+  @override
+  Future<CallApiResult> invokeMethod(IrisMethodCall methodCall) async {
+    methodCallQueue.add(methodCall);
+    return CallApiResult(data: {'result': 0}, irisReturnCode: 0);
+  }
+
+  @override
+  int getNativeHandle() {
+    return 100;
+  }
+
+  @override
+  VoidCallback addHotRestartListener(HotRestartListener listener) {
+    return () {};
+  }
+
+  @override
+  void removeHotRestartListener(HotRestartListener listener) {}
+
+  @override
+  Future<void> dispose() async {}
+
+  void reset() {
+    methodCallQueue.clear();
+  }
+}

test_shard/integration_test_app/integration_test/testcases/agora_video_view_testcases.dart

@@ -1,18 +1,24 @@
+import 'dart:convert';
 import 'dart:io';
 
 import 'package:agora_rtc_engine/agora_rtc_engine.dart';
 import 'package:flutter/foundation.dart';
 import 'package:flutter/material.dart';
 import 'package:flutter_test/flutter_test.dart';
+import 'package:agora_rtc_engine/src/impl/agora_rtc_engine_impl.dart';
+import '../fake/fake_iris_method_channel.dart';
 
 class _RenderViewWidget extends StatefulWidget {
   const _RenderViewWidget({
     Key? key,
     required this.builder,
+    required this.rtcEngine,
   }) : super(key: key);
 
   final Function(BuildContext context, RtcEngine engine) builder;
 
+  final RtcEngine rtcEngine;
+
   @override
   State<_RenderViewWidget> createState() => _RenderViewWidgetState();
 }
@@ -41,7 +47,7 @@ class _RenderViewWidgetState extends State<_RenderViewWidget> {
     String engineAppId = const String.fromEnvironment('TEST_APP_ID',
         defaultValue: '<YOUR_APP_ID>');
 
-    _engine = createAgoraRtcEngine();
+    _engine = widget.rtcEngine;
     await _engine.initialize(RtcEngineContext(
       appId: engineAppId,
       areaCode: AreaCode.areaCodeGlob.value(),
@@ -75,7 +81,12 @@ void testCases() {
   testWidgets(
     'Show local AgoraVideoView after RtcEngine.initialize',
     (WidgetTester tester) async {
+      final irisMethodChannel = FakeIrisMethodChannel();
+      final rtcEngine =
+          RtcEngineImpl.create(irisMethodChannel: irisMethodChannel);
+
       await tester.pumpWidget(_RenderViewWidget(
+        rtcEngine: rtcEngine,
         builder: (context, engine) {
           return SizedBox(
             height: 100,
@@ -90,6 +101,8 @@ void testCases() {
         },
       ));
 
+      await tester.pumpAndSettle(const Duration(milliseconds: 5000));
+      // pumpAndSettle again to ensure the `AgoraVideoView` shown
       await tester.pumpAndSettle(const Duration(milliseconds: 5000));
 
       if (defaultTargetPlatform == TargetPlatform.android) {
@@ -100,11 +113,132 @@ void testCases() {
         expect(find.byType(UiKitView), findsOneWidget);
       }
 
+      final setupLocalVideoCalls = irisMethodChannel.methodCallQueue
+          .where((e) => e.funcName == 'RtcEngine_setupLocalVideo')
+          .toList();
+
+      final jsonMap2 = jsonDecode(setupLocalVideoCalls[0].params);
+      expect(jsonMap2['canvas']['view'] != 0, isTrue);
+
       await tester.pumpWidget(Container());
       await tester.pumpAndSettle(const Duration(milliseconds: 5000));
 
       expect(find.byType(AgoraVideoView), findsNothing);
     },
     skip: !(Platform.isAndroid || Platform.isIOS),
   );
+
+  testWidgets(
+    'Switch local/remote AgoraVideoView with RtcConnection',
+    (WidgetTester tester) async {
+      final irisMethodChannel = FakeIrisMethodChannel();
+      final rtcEngine =
+          RtcEngineImpl.create(irisMethodChannel: irisMethodChannel);
+
+      await tester.pumpWidget(_RenderViewWidget(
+        rtcEngine: rtcEngine,
+        builder: (context, engine) {
+          return Column(
+            children: [
+              SizedBox(
+                height: 100,
+                width: 100,
+                child: AgoraVideoView(
+                  controller: VideoViewController(
+                    rtcEngine: engine,
+                    canvas: const VideoCanvas(uid: 0),
+                  ),
+                ),
+              ),
+              SizedBox(
+                height: 100,
+                width: 100,
+                child: AgoraVideoView(
+                  controller: VideoViewController.remote(
+                    rtcEngine: engine,
+                    canvas: const VideoCanvas(uid: 1000),
+                    connection: const RtcConnection(
+                      channelId: 'switch_video_view',
+                      localUid: 1000,
+                    ),
+                  ),
+                ),
+              )
+            ],
+          );
+        },
+      ));
+
+      await tester.pumpAndSettle(const Duration(milliseconds: 5000));
+      // pumpAndSettle again to ensure the `AgoraVideoView` shown
+      await tester.pumpAndSettle(const Duration(milliseconds: 5000));
+
+      if (defaultTargetPlatform == TargetPlatform.android) {
+        expect(find.byType(AndroidView), findsNWidgets(2));
+      }
+
+      if (defaultTargetPlatform == TargetPlatform.iOS) {
+        expect(find.byType(UiKitView), findsNWidgets(2));
+      }
+
+      // Clear the methodCall records
+      irisMethodChannel.reset();
+
+      await tester.pumpWidget(_RenderViewWidget(
+        rtcEngine: rtcEngine,
+        builder: (context, engine) {
+          return Column(
+            children: [
+              SizedBox(
+                height: 100,
+                width: 100,
+                child: AgoraVideoView(
+                  controller: VideoViewController.remote(
+                    rtcEngine: engine,
+                    canvas: const VideoCanvas(uid: 1000),
+                    connection: const RtcConnection(
+                      channelId: 'switch_video_view',
+                      localUid: 1000,
+                    ),
+                  ),
+                ),
+              ),
+              SizedBox(
+                height: 100,
+                width: 100,
+                child: AgoraVideoView(
+                  controller: VideoViewController(
+                    rtcEngine: engine,
+                    canvas: const VideoCanvas(uid: 0),
+                  ),
+                ),
+              )
+            ],
+          );
+        },
+      ));
+
+      await tester.pumpAndSettle(const Duration(milliseconds: 5000));
+      if (defaultTargetPlatform == TargetPlatform.android) {
+        expect(find.byType(AndroidView), findsNWidgets(2));
+      }
+      if (defaultTargetPlatform == TargetPlatform.iOS) {
+        expect(find.byType(UiKitView), findsNWidgets(2));
+      }
+
+      final setupRemoteVideoExCalls = irisMethodChannel.methodCallQueue
+          .where((e) => e.funcName == 'RtcEngineEx_setupRemoteVideoEx')
+          .toList();
+
+      final jsonMap1 = jsonDecode(setupRemoteVideoExCalls[0].params);
+      expect(jsonMap1['canvas']['view'] == 0, isTrue);
+
+      final jsonMap2 = jsonDecode(setupRemoteVideoExCalls[1].params);
+      expect(jsonMap2['canvas']['view'] != 0, isTrue);
+
+      await tester.pumpWidget(Container());
+      await tester.pumpAndSettle(const Duration(milliseconds: 5000));
+    },
+    skip: !(Platform.isAndroid || Platform.isIOS),
+  );
 }