Handle test failures (#1289)

Author: blink1073

.github/workflows/python-tests.yml

@@ -36,7 +36,9 @@ jobs:
         run: |
           sudo apt-get update
           sudo apt-get install texlive-plain-generic inkscape texlive-xetex
-          sudo apt-get install xvfb x11-utils libxkbcommon-x11-0 pandoc
+          sudo apt-get install xvfb x11-utils libxkbcommon-x11-0
+          # pandoc is not up to date in the ubuntu repos, so we install directly
+          wget https://github.com/jgm/pandoc/releases/download/3.1.2/pandoc-3.1.2-1-amd64.deb && sudo dpkg -i pandoc-3.1.2-1-amd64.deb
       - name: Run the tests on posix
         if: ${{ !startsWith(matrix.python-version, 'pypy') && !startsWith(matrix.os, 'windows') }}
         run: hatch run cov:test --cov-fail-under 75 || hatch run test:test --lf

pyproject.toml

@@ -63,7 +63,8 @@ test = [
     "pytest-jupyter[server]>=0.4",
     "pytest>=7.0",
     "requests",
-    "pre-commit"
+    "pre-commit",
+    'flaky'
 ]
 docs = [
     "ipykernel",

tests/test_terminal.py

@@ -7,6 +7,7 @@
 import warnings
 
 import pytest
+from flaky import flaky  # type:ignore
 from tornado.httpclient import HTTPClientError
 from traitlets.config import Config
 
@@ -229,6 +230,7 @@ async def test_terminal_create_with_bad_cwd(jp_fetch, jp_ws_fetch):
     assert non_existing_path not in message_stdout
 
 
+@flaky
 def test_culling_config(jp_server_config, jp_configurable_serverapp):
     app = jp_configurable_serverapp()
     terminal_mgr_config = app.config.ServerApp.TerminalManager
@@ -240,6 +242,7 @@ def test_culling_config(jp_server_config, jp_configurable_serverapp):
     assert terminal_mgr_settings.cull_interval == CULL_INTERVAL
 
 
+@flaky
 async def test_culling(jp_server_config, jp_fetch):
     # POST request
     resp = await jp_fetch(