Update documentation

tests/handlers/test_upload.py

@@ -18,6 +18,7 @@
 
 import aiohttp
 import asyncio
+import pytest
 import os
 import tarfile
 from unittest.mock import patch
@@ -26,6 +27,13 @@ from unittest.mock import patch
 from gns3server.config import Config
 
 
+@pytest.yield_fixture(autouse=True)
+def restore_working_dir():
+    directory = os.getcwd()
+    yield
+    os.chdir(directory)
+
+
 def test_index_upload(server, tmpdir):
 
     Config.instance().set("Server", "images_path", str(tmpdir))