Add testing on Python 3.14 (#541)

* test on Python 3.14 and 3.14t

* ignroe dep warn

* Slector and PRoactor

* refine error message

* ignore more eventloop stuff

* slightly longer timeout for ci

---------

Co-authored-by: Michał Krassowski <5832902+krassowski@users.noreply.github.com>

Author: Carreau

.github/workflows/test.yml

@@ -84,7 +84,7 @@ jobs:
       fail-fast: false
       matrix:
         os: [ubuntu-latest, windows-latest, macos-latest]
-        python-version: ["3.9", "3.10", "3.11", "3.12", "3.13"]
+        python-version: ["3.9", "3.10", "3.11", "3.12", "3.13", "3.14", "3.14t"]
         # PyPy is not supported because we use the file_id_manager. See:
         # https://github.com/jupyter-server/jupyter_server_fileid/issues/44
         #include:

pyproject.toml

@@ -109,6 +109,10 @@ filterwarnings = [
     'ignore:Unclosed <MemoryObjectSendStream:ResourceWarning',
     # see https://github.com/python/cpython/issues/126259
     'ignore:unclosed database in <sqlite3.Connection object',
+    # Ignore asyncio.Windows[Proactor|Selector]EventLoopPolicy deprecation warning emitted by jupyter-server
+    "ignore:'asyncio.WindowsProactorEventLoopPolicy' is deprecated:DeprecationWarning",
+    "ignore:'asyncio.WindowsSelectorEventLoopPolicy' is deprecated:DeprecationWarning",
+    "ignore:'asyncio.get_event_loop_policy' is deprecated :DeprecationWarning",
 ]
 
 [tool.mypy]

tests/test_documents.py

@@ -70,7 +70,7 @@ async def connect(file_format, file_type, file_path):
         tg.start_soon(connect, file_format, file_type, file_path)
     t1 = time()
     delta = t1 - t0
-    assert delta < 0.5
+    assert delta < 0.6
 
     await cleanup(jp_serverapp)