Add Python 3.12 to tests and CI config

.github/workflows/main.yml

@@ -75,6 +75,12 @@ jobs:
           py311-pip213,
           py311-piplatest,
           py311-pipgit,
+          py312-pip192,
+          py312-pip193,
+          py312-pip203,
+          py312-pip213,
+          py312-piplatest,
+          py312-pipgit,
           mypy,
         ]
 

tests/conftest.py

@@ -20,6 +20,7 @@
 import pytest
 import os
 import subprocess
+import sys
 from tempfile import TemporaryDirectory
 
 try:
@@ -51,6 +52,14 @@ def _venv_install_pip(venv):
 
     if MICROPIPENV_TEST_SETUPTOOLS_VERSION is not None:
         venv.install(f"setuptools{MICROPIPENV_TEST_SETUPTOOLS_VERSION}")
+    elif sys.version_info >= (3, 12):
+        # pytest-venv does not work with Python 3.12
+        # because it uses pkg_resources in venv but
+        # setuptools is not in the venv by default for 3.12+
+        # This branch can be removed when
+        # https://github.com/mmerickel/pytest-venv/issues/5
+        # is fixed and released
+        venv.install("setuptools")
 
 
 def _venv_get_version_or_none(self, package):

tox.ini

@@ -11,6 +11,7 @@ envlist =
     py310-pip{latest,git}-pytoml
     py310-pip{latest,git}-tomli
     py311-pip{192,193,203,213,latest,git}
+    py312-pip{192,193,203,213,latest,git}
     mypy
 
 [testenv]