CI: run tests multi-threaded (#2251)

.github/workflows/unittests.yml

@@ -54,9 +54,9 @@ jobs:
     - name: Install dependencies
       run: |
         python -m pip install --upgrade pip
-        pip install pytest pytest-subtests
+        pip install pytest pytest-subtests pytest-xdist
         python ModuleUpdate.py --yes --force --append "WebHostLib/requirements.txt"
         python Launcher.py --update_settings  # make sure host.yaml exists for tests
     - name: Unittests
       run: |
-        pytest
+        pytest -n auto

test/TestBase.py

@@ -1,16 +1,11 @@
-import pathlib
 import typing
 import unittest
 from argparse import Namespace
 
-import Utils
 from test.general import gen_steps
 from worlds import AutoWorld
 from worlds.AutoWorld import call_all
 
-file_path = pathlib.Path(__file__).parent.parent
-Utils.local_path.cached_path = file_path
-
 from BaseClasses import MultiWorld, CollectionState, ItemClassification, Item
 from worlds.alttp.Items import ItemFactory
 

test/__init__.py

@@ -1,3 +1,4 @@
+import pathlib
 import warnings
 
 import settings
@@ -5,3 +6,12 @@ import settings
 warnings.simplefilter("always")
 settings.no_gui = True
 settings.skip_autosave = True
+
+import ModuleUpdate
+
+ModuleUpdate.update_ran = True  # don't upgrade
+
+import Utils
+
+Utils.local_path.cached_path = pathlib.Path(__file__).parent.parent
+Utils.user_path()  # initialize cached_path

test/programs/TestGenerate.py

@@ -1,13 +1,13 @@
 # Tests for Generate.py (ArchipelagoGenerate.exe)
 
 import unittest
+import os
+import os.path
 import sys
+
 from pathlib import Path
 from tempfile import TemporaryDirectory
-import os.path
+
-import os
-import ModuleUpdate
-ModuleUpdate.update_ran = True  # don't upgrade
 import Generate