feat(mobile-next): 导入官方 openim-flutter-demo 固定基线 3.8.3-patch.3 并完成双构建

- 上游: github.com/OpenIMSDK/openim-flutter-demo tag 3.8.3-patch.3 commit b3dfdb1e8aaeaaf6f0793e10cadd20d5c184a31f - 并行目录 mobile-next/ 原样导入（含 LICENSE），不覆盖现网 mobile/ - 锁定 Flutter 3.24.5 / Dart 3.5.4 / JDK 17 / Gradle 7.6.3 / AGP 7.3.1 - 实测 Android debug 与 release 构建均成功（见 docs/mobile-next-baseline-import.md） - 本提交可单独回退：git revert 1db1229（重写前） Co-authored-by: multica-agent <github@multica.ai>
2026-08-19 15:24:33 +08:00
parent fa8584a73f
commit 8046ec7483
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+import 'package:flutter_download_manager/flutter_download_manager.dart';
+import 'package:flutter_test/flutter_test.dart';
+
+void main() {
+  var url2 = "http://download.dcloud.net.cn/HBuilder.9.0.2.macosx_64.dmg";
+
+  var url3 =
+      'https://cdn.jsdelivr.net/gh/flutterchina/flutter-in-action@1.0/docs/imgs/book.jpg';
+  var url = "http://app01.78x56.com/Xii_2021-03-13%2010%EF%BC%9A41.ipa";
+  var url4 =
+      "https://jsoncompare.org/LearningContainer/SampleFiles/Video/MP4/sample-mp4-file.mp4";
+  var url5 =
+      "https://jsoncompare.org/LearningContainer/SampleFiles/Video/MP4/Sample-Video-File-For-Testing.mp4";
+  var url6 = "https://static.gtaf.org/v1/quran/static/translation-db/10";
+
+  test('future download', () async {
+    var dl = DownloadManager();
+
+    DownloadTask? task = await dl.addDownload(url4, "./test.mp4");
+
+    task?.status.addListener(() {
+      print(task.status.value);
+    });
+
+    task?.progress.addListener(() {
+      print(task.progress.value);
+    });
+
+    await dl.whenDownloadComplete(url4);
+  });
+
+  test('parallel download', () async {
+    var dl = DownloadManager();
+
+    DownloadTask? task = await dl.addDownload(url2, "./test2.ipa");
+    DownloadTask? task2 = await  dl.addDownload(url3, "./test3.ipa");
+    DownloadTask? task3 = await dl.addDownload(url, "./test.ipa");
+
+    task?.status.addListener(() {
+      print(task.status.value);
+    });
+
+    task2?.status.addListener(() {
+      print(task2.status.value);
+    });
+
+    task3?.status.addListener(() {
+      print(task3.status.value);
+    });
+
+    await dl.whenBatchDownloadsComplete([url, url2, url3], timeout: Duration(seconds: 20));
+  });
+
+  test('cancel download', () async {
+    var dl = DownloadManager();
+
+    DownloadTask? task = await dl.addDownload(url5, "./test2.mp4");
+
+    Future.delayed(Duration(milliseconds: 500), () {
+      dl.cancelDownload(url5);
+    });
+
+    task?.status.addListener(() {
+      print(task.status.value);
+    });
+
+    await Future.delayed(Duration(seconds: 10), null);
+
+    assert(task?.status.value == DownloadStatus.canceled);
+  });
+
+  test('pause and resume download', () async {
+    var dl = DownloadManager();
+
+    DownloadTask? task = await dl.addDownload(url5, "./test2.mp4");
+
+    Future.delayed(Duration(milliseconds: 500), () {
+      dl.pauseDownload(url5);
+    });
+
+    Future.delayed(Duration(milliseconds: 1000), () {
+      dl.resumeDownload(url5);
+    });
+
+    task?.status.addListener(() {
+      print(task.status.value);
+    });
+
+    await Future.delayed(Duration(seconds: 20), null);
+
+    assert(task?.status.value == DownloadStatus.completed);
+  });
+
+  test('handle empty url', () async {
+    var dl = DownloadManager();
+
+    var url = "";
+    DownloadTask? task = await dl.addDownload(url, "");
+
+    task?.status.addListener(() {
+      print(task.status.value);
+    });
+
+    var error = dl.whenDownloadComplete(url);
+  });
+
+  test('handle empty path', () async {
+    var dl = DownloadManager();
+
+    DownloadTask? task = await dl.addDownload(url3, "");
+
+    task?.status.addListener(() {
+      print(task.status.value);
+    });
+
+    await dl.whenDownloadComplete(url3);
+  });
+
+  test('handle url with empty extension', () async {
+    var dl = DownloadManager();
+
+    DownloadTask? task = await dl.addDownload(url6, "");
+
+    task?.status.addListener(() {
+      print(task.status.value);
+    });
+
+    await dl.whenDownloadComplete(url6);
+  });
+
+  test('download in batch', () async {
+    var dl = DownloadManager();
+
+    var urls = <String>[];
+    urls.add(url2);
+    urls.add(url3);
+    urls.add(url);
+
+    await dl.addDownload(url2, "./test2.ipa");
+    await dl.addDownload(url3, "./test3.ipa");
+    await dl.addDownload(url, "./test.ipa");
+
+    var downloadProgress = dl.getBatchDownloadProgress(urls);
+
+    downloadProgress.addListener(() {
+      print(downloadProgress.value);
+    });
+
+    await dl.whenBatchDownloadsComplete(urls);
+  });
+
+  test('download in batch by setting the savedDirectory only', () async {
+    var dl = DownloadManager();
+
+    var urls = <String>[];
+    urls.add(url2);
+    urls.add(url3);
+    urls.add(url);
+
+    dl.addBatchDownloads(urls, "./");
+
+    var downloadProgress = dl.getBatchDownloadProgress(urls);
+
+    downloadProgress.addListener(() {
+      print(downloadProgress.value);
+    });
+
+    await dl.whenBatchDownloadsComplete(urls);
+  });
+
+  test('cancel a batched download', () async {
+    var dl = DownloadManager();
+
+    var urls = <String>[];
+    urls.add(url6);
+    urls.add(url5);
+    urls.add(url);
+    dl.addBatchDownloads(urls, ".");
+
+    var downloads = dl.getBatchDownloads(urls);
+
+    downloads.forEach((task) {
+      task?.status.addListener(() {
+        print(task.request.url + ", " + task.status.value.toString());
+      });
+    });
+
+    dl.cancelBatchDownloads(urls);
+
+    await dl.whenBatchDownloadsComplete(urls);
+  });
+
+  test('cancel a single item in a batched download', () async {
+    var dl = DownloadManager();
+
+    var urls = <String>[];
+    urls.add(url4);
+    urls.add(url3);
+    urls.add(url);
+    dl.addBatchDownloads(urls, "");
+
+    var downloads = dl.getBatchDownloads(urls);
+
+    downloads.forEach((task) {
+      task?.status.addListener(() {
+        print(task.status.value);
+      });
+    });
+
+    dl.cancelDownload(url3);
+
+    await dl.whenBatchDownloadsComplete(urls);
+  });
+}