refactor: 收口订阅与插件应用边界

tests/test_plugin_folders.py

@@ -0,0 +1,48 @@
+from unittest.mock import MagicMock
+
+from app.application.plugin import folders
+from app.schemas.types import SystemConfigKey
+
+
+def test_remove_plugin_from_folders_updates_current_and_legacy_shapes(monkeypatch):
+    """卸载插件时应同时清理字典格式和旧列表格式的文件夹引用。"""
+    stored = {
+        "常用": {"plugins": ["DemoPlugin", "OtherPlugin"], "order": 1},
+        "旧目录": ["DemoPlugin", "ThirdPlugin"],
+    }
+    config = MagicMock()
+    config.get.return_value = stored
+    monkeypatch.setattr(folders, "get_configured_system_config", lambda: config)
+
+    folders.remove_plugin_from_folders("DemoPlugin")
+
+    assert stored["常用"]["plugins"] == ["OtherPlugin"]
+    assert stored["旧目录"] == ["ThirdPlugin"]
+    config.get.assert_called_once_with(SystemConfigKey.PluginFolders)
+    config.set.assert_called_once_with(SystemConfigKey.PluginFolders, stored)
+
+
+def test_remove_plugin_from_folders_skips_write_when_plugin_is_absent(monkeypatch):
+    """插件不在任何文件夹时不得产生无意义配置写入。"""
+    config = MagicMock()
+    config.get.return_value = {"常用": {"plugins": ["OtherPlugin"]}}
+    monkeypatch.setattr(folders, "get_configured_system_config", lambda: config)
+
+    folders.remove_plugin_from_folders("DemoPlugin")
+
+    config.set.assert_not_called()
+
+
+def test_remove_plugin_from_folders_does_not_block_uninstall_on_config_error(
+    monkeypatch,
+):
+    """文件夹配置读取失败时只记录错误，不应阻断插件卸载主流程。"""
+    config = MagicMock()
+    config.get.side_effect = RuntimeError("broken folders")
+    error = MagicMock()
+    monkeypatch.setattr(folders, "get_configured_system_config", lambda: config)
+    monkeypatch.setattr(folders.logger, "error", error)
+
+    folders.remove_plugin_from_folders("DemoPlugin")
+
+    error.assert_called_once()