Implement Android v2 quick send UX

test/widget_test.dart

@@ -6,20 +6,65 @@
 // tree, read text, and verify that the values of widget properties are correct.
 
 import 'package:flutter_test/flutter_test.dart';
+import 'package:flutter/services.dart';
 import 'package:shared_preferences/shared_preferences.dart';
 
 import 'package:wireless_text_syncer_android/main.dart';
 
 void main() {
+  TestWidgetsFlutterBinding.ensureInitialized();
+
+  const connectionChannel = MethodChannel('wireless_text_syncer/connection');
+  const stateChannel = MethodChannel('wireless_text_syncer/connection_state');
+
+  setUp(() {
+    TestDefaultBinaryMessengerBinding.instance.defaultBinaryMessenger
+        .setMockMethodCallHandler(connectionChannel, (call) async {
+          switch (call.method) {
+            case 'getState':
+              return {
+                'connected': false,
+                'connecting': false,
+                'host': '',
+                'port': 8181,
+                'lastError': null,
+              };
+            case 'startDiscovery':
+              return [
+                {'name': 'Desktop-WIN11', 'host': '192.168.1.10', 'port': 8181},
+              ];
+            case 'connect':
+            case 'disconnect':
+              return null;
+            case 'sendText':
+              return true;
+          }
+          return null;
+        });
+    TestDefaultBinaryMessengerBinding.instance.defaultBinaryMessenger
+        .setMockMethodCallHandler(stateChannel, (call) async => null);
+  });
+
+  tearDown(() {
+    TestDefaultBinaryMessengerBinding.instance.defaultBinaryMessenger
+        .setMockMethodCallHandler(connectionChannel, null);
+    TestDefaultBinaryMessengerBinding.instance.defaultBinaryMessenger
+        .setMockMethodCallHandler(stateChannel, null);
+  });
+
   testWidgets('shows v2 draft board controls', (WidgetTester tester) async {
     SharedPreferences.setMockInitialValues({});
 
     await tester.pumpWidget(const WirelessTextSyncerApp());
     await tester.pump(const Duration(milliseconds: 100));
+    await tester.pump(const Duration(seconds: 2));
 
     expect(find.text('未连接 (点击配置)'), findsOneWidget);
     expect(find.text('IP 地址'), findsOneWidget);
     expect(find.text('端口'), findsOneWidget);
+    expect(find.text('局域网设备雷达'), findsOneWidget);
+    expect(find.text('Desktop-WIN11'), findsOneWidget);
+    expect(find.text('可连接'), findsOneWidget);
     expect(find.text('草稿板'), findsOneWidget);
     expect(find.text('发送后清空'), findsOneWidget);
     expect(find.text('追加回车'), findsOneWidget);