From df65123abe3f1ceab4df09c0e89aff42c0d01ef2 Mon Sep 17 00:00:00 2001
From: Andy Huang <andyyehoo@gmail.com>
Date: Tue, 23 Sep 2025 00:00:02 +0800
Subject: [PATCH] test: cover AcFun playlist extraction

---
 test/test_acfun.py        | 74 +++++++++++++++++++++++++++++++++++++++
 yt_dlp/extractor/acfun.py | 27 ++++++++++++++
 2 files changed, 101 insertions(+)
 create mode 100644 test/test_acfun.py

diff --git a/test/test_acfun.py b/test/test_acfun.py
new file mode 100644
index 0000000000..1b98b93600
--- /dev/null
+++ b/test/test_acfun.py
@@ -0,0 +1,74 @@
+#!/usr/bin/env python3
+
+# Allow direct execution
+import json
+import os
+import sys
+import unittest
+
+sys.path.insert(0, os.path.dirname(os.path.dirname(os.path.abspath(__file__))))
+
+from test.helper import FakeYDL
+
+from yt_dlp.extractor.acfun import AcFunVideoIE
+
+
+class AcFunPlaylistTest(unittest.TestCase):
+    def setUp(self):
+        self.ie = AcFunVideoIE()
+        self.ie.set_downloader(FakeYDL({'noplaylist': False}))
+
+    def test_playlist_entries_are_generated_for_multi_part_videos(self):
+        video_info = {
+            'title': 'Sample Playlist',
+            'description': 'Sample description',
+            'coverUrl': 'https://example.com/thumb.jpg',
+            'user': {
+                'name': 'Uploader Name',
+                'href': 'uploader-id',
+            },
+            'videoList': [
+                {
+                    'id': 'part-1',
+                    'title': 'Episode 1',
+                },
+                {
+                    'id': 'part-2',
+                    'title': 'Episode 2',
+                },
+            ],
+            'currentVideoInfo': {
+                'id': 'part-1',
+            },
+        }
+        webpage = f'<script>window.videoInfo = {json.dumps(video_info)};</script>'
+        self.ie._download_webpage = lambda url, video_id: webpage
+
+        result = self.ie._real_extract('https://www.acfun.cn/v/ac12345?foo=bar')
+
+        self.assertEqual(result['_type'], 'playlist')
+        self.assertEqual(result['id'], '12345')
+        self.assertEqual(result['title'], 'Sample Playlist')
+        self.assertEqual(result['description'], 'Sample description')
+        self.assertEqual(result['uploader'], 'Uploader Name')
+        self.assertEqual(result['uploader_id'], 'uploader-id')
+        self.assertEqual(
+            [entry['url'] for entry in result['entries']],
+            [
+                'https://www.acfun.cn/v/ac12345?foo=bar',
+                'https://www.acfun.cn/v/ac12345_2?foo=bar',
+            ],
+        )
+        self.assertEqual(
+            [entry['id'] for entry in result['entries']],
+            ['12345', '12345_2'],
+        )
+        self.assertEqual(
+            [entry['title'] for entry in result['entries']],
+            ['Episode 1', 'Episode 2'],
+        )
+        self.assertTrue(all(entry['ie_key'] == 'AcFunVideo' for entry in result['entries']))
+
+
+if __name__ == '__main__':
+    unittest.main()
diff --git a/yt_dlp/extractor/acfun.py b/yt_dlp/extractor/acfun.py
index 28559baecf..574e60b50a 100644
--- a/yt_dlp/extractor/acfun.py
+++ b/yt_dlp/extractor/acfun.py
@@ -7,6 +7,7 @@ from ..utils import (
     parse_qs,
     str_or_none,
     traverse_obj,
+    update_url_query,
 )
 
 
@@ -78,6 +79,13 @@ class AcFunVideoIE(AcFunVideoBaseIE):
             'thumbnail': r're:^https?://.*\.(jpg|jpeg)',
             'description': 'md5:67583aaf3a0f933bd606bc8a2d3ebb17',
         },
+    }, {
+        'url': 'https://www.acfun.cn/v/ac35468952',
+        'info_dict': {
+            'id': '35468952',
+            'title': 'regex:.+',
+        },
+        'playlist_mincount': 2,
     }]
 
     def _real_extract(self, url):
@@ -89,6 +97,25 @@ class AcFunVideoIE(AcFunVideoBaseIE):
         title = json_all.get('title')
         video_list = json_all.get('videoList') or []
         video_internal_id = traverse_obj(json_all, ('currentVideoInfo', 'id'))
+        playlist_id = video_id.partition('_')[0]
+        if video_id == playlist_id and len(video_list) > 1 and self._yes_playlist(playlist_id, video_id):
+            entries = []
+            query = parse_qs(url)
+            for idx, part_video_info in enumerate(video_list, start=1):
+                part_suffix = '' if idx == 1 else f'_{idx}'
+                part_id = f'{playlist_id}{part_suffix}'
+                entry_url = update_url_query(f'https://www.acfun.cn/v/ac{part_id}', query)
+                entries.append(self.url_result(
+                    entry_url, ie=self.ie_key(), video_id=part_id,
+                    video_title=traverse_obj(part_video_info, 'title')))
+
+            return self.playlist_result(
+                entries, playlist_id, title,
+                description=json_all.get('description'),
+                thumbnail=json_all.get('coverUrl'),
+                uploader=traverse_obj(json_all, ('user', 'name')),
+                uploader_id=traverse_obj(json_all, ('user', 'href')))
+
         if video_internal_id and len(video_list) > 1:
             part_idx, part_video_info = next(
                 (idx + 1, v) for (idx, v) in enumerate(video_list)