fix: create missing subtitle download directories

tests/test_subtitle_links.py

@@ -1,9 +1,66 @@
+from pathlib import Path
+
 from lxml import etree
 
+from app.core.context import Context, TorrentInfo
 from app.modules.subtitle import SubtitleModule
+from app.schemas.file import FileItem
+
+
+class _FakeStorageChain:
+    """
+    模拟字幕下载使用的存储链，记录目录查询与创建行为。
+    """
+
+    def __init__(self):
+        """
+        初始化调用记录。
+        """
+        self.file_item_paths = []
+        self.created_paths = []
+        self.uploaded_files = []
+
+    def get_file_item(self, storage, path):
+        """
+        记录文件项查询，模拟目标目录和字幕文件都不存在。
+        """
+        self.file_item_paths.append((storage, path))
+        return None
+
+    def get_folder(self, storage, path):
+        """
+        记录递归创建目录请求，并返回创建后的目录项。
+        """
+        self.created_paths.append((storage, path))
+        return FileItem(storage=storage, type="dir", path=path.as_posix(), name=path.name)
+
+    def upload_file(self, fileitem, path):
+        """
+        记录上传请求，并返回上传后的文件项。
+        """
+        self.uploaded_files.append((fileitem, path))
+        return FileItem(
+            storage=fileitem.storage,
+            type="file",
+            path=(path.parent / path.name).as_posix(),
+            name=path.name,
+        )
+
+
+class _FakeResponse:
+    """
+    构造字幕下载响应对象。
+    """
+
+    status_code = 200
+    content = b"subtitle"
+    headers = {"Content-Disposition": 'attachment; filename="example.srt"'}
 
 
 def test_parse_subtitle_links_filters_detail_page_action_links():
+    """
+    详情页解析字幕链接时应过滤上传和外部搜索动作链接。
+    """
     html_text = """
     <tr>
       <td class="rowhead" valign="top">字幕</td>
@@ -43,3 +100,47 @@ def test_parse_subtitle_links_filters_detail_page_action_links():
     assert links == [
         "https://audiences.me/downloadsubs.php?torrentid=621182&subid=2148"
     ]
+
+
+def test_download_added_creates_missing_target_directory(monkeypatch):
+    """
+    下载字幕时目标目录不存在，应按完整下载目录自动创建后再保存字幕。
+    """
+    storage_chain = _FakeStorageChain()
+    module = SubtitleModule()
+    context = Context(
+        torrent_info=TorrentInfo(
+            page_url="https://example.test/details.php?id=1",
+            site_cookie="cookie",
+            site_ua="ua",
+        )
+    )
+
+    monkeypatch.setattr("app.modules.subtitle.StorageChain", lambda: storage_chain)
+    monkeypatch.setattr(
+        "app.modules.subtitle.TorrentHelper.get_fileinfo_from_torrent_content",
+        lambda self, content: ("Example Folder", []),
+    )
+    monkeypatch.setattr(
+        "app.modules.subtitle.TorrentHelper.get_url_filename",
+        lambda response, url: "example.srt",
+    )
+    monkeypatch.setattr(
+        "app.modules.subtitle.RequestUtils",
+        lambda **kwargs: type(
+            "FakeRequest",
+            (),
+            {"get_res": lambda self, url: _FakeResponse()},
+        )(),
+    )
+    monkeypatch.setattr("app.modules.subtitle.time.sleep", lambda seconds: None)
+    monkeypatch.setattr(module, "_get_subtitle_links", lambda torrent: ["https://example.test/subtitle.srt"])
+
+    module.download_added(
+        context=context,
+        download_dir=Path("/downloads"),
+        torrent_content=b"torrent",
+    )
+
+    assert storage_chain.created_paths == [("local", Path("/downloads/Example Folder"))]
+    assert storage_chain.uploaded_files