feat: 由于分享小程序到微信必须包含 thumbnail 故 thumbnail 改为必填参数

lib/src/share/share_models.dart

@@ -84,7 +84,7 @@ class WeChatShareMiniProgramModel implements WeChatShareBaseModel {
       this.title,
       this.description,
       this.withShareTicket = false,
-      this.thumbnail,
+      required this.thumbnail,
       this.hdImagePath,
       this.mediaTagName,
       this.messageAction,
@@ -102,7 +102,7 @@ class WeChatShareMiniProgramModel implements WeChatShareBaseModel {
   final WeChatImage? hdImagePath;
   final String? title;
   final String? description;
-  final WeChatImage? thumbnail;
+  final WeChatImage thumbnail;
   final bool withShareTicket;
   final String? messageExt;
   final String? messageAction;
@@ -120,7 +120,7 @@ class WeChatShareMiniProgramModel implements WeChatShareBaseModel {
       "title": title,
       _description: description,
       "withShareTicket": withShareTicket,
-      _thumbnail: thumbnail?.toMap(),
+      _thumbnail: thumbnail.toMap(),
       "hdImagePath": hdImagePath?.toMap(),
       _messageAction: messageAction,
       _mediaTagName: mediaTagName,

test/share/wechat_share_mini_program_model_test.dart

@@ -22,8 +22,7 @@ import 'package:fluwx/fluwx.dart';
 void main() {
   group("construct", () {
     test("non default values", () {
-      var thumbnail =
-          WeChatImage.network("http://openflutter.dev/fluwx.png");
+      var thumbnail = WeChatImage.network("http://openflutter.dev/fluwx.png");
       var model = WeChatShareMiniProgramModel(
           webPageUrl: "http://openflutter.dev",
           miniProgramType: WXMiniProgramType.PREVIEW,
@@ -41,8 +40,11 @@ void main() {
     });
 
     test("default values", () {
+      var thumbnail = WeChatImage.network("http://openflutter.dev/fluwx.png");
       var model = WeChatShareMiniProgramModel(
-          webPageUrl: "http://openflutter.dev", userName: "userName");
+          webPageUrl: "http://openflutter.dev",
+          userName: "userName",
+          thumbnail: thumbnail);
       expect(model.webPageUrl, "http://openflutter.dev");
       expect(model.miniProgramType, WXMiniProgramType.RELEASE);
       expect(model.thumbnail, null);
@@ -53,8 +55,7 @@ void main() {
 
   group("toMap", () {
     test("with thumbnail", () {
-      var thumbnail =
-          WeChatImage.network("http://openflutter.dev/fluwx.png");
+      var thumbnail = WeChatImage.network("http://openflutter.dev/fluwx.png");
       var map = WeChatShareMiniProgramModel(
               webPageUrl: "http://openflutter.dev",
               miniProgramType: WXMiniProgramType.PREVIEW,
@@ -71,10 +72,12 @@ void main() {
     });
 
     test("without thumbnail", () {
+      var thumbnail = WeChatImage.network("http://openflutter.dev/fluwx.png");
       var map = WeChatShareMiniProgramModel(
               webPageUrl: "http://openflutter.dev",
               miniProgramType: WXMiniProgramType.PREVIEW,
               withShareTicket: true,
+              thumbnail: thumbnail,
               userName: "userName",
               path: "path")
           .toMap();