Test with Python 3.11 (currently in beta)

.github/workflows/test.yml

@@ -20,6 +20,7 @@ jobs:
         include:
           # See the following link for all available Python versions:
           # https://raw.githubusercontent.com/actions/python-versions/main/versions-manifest.json
+          - {name: '3.11-beta',  python: '3.11.0-beta.2',   tox: py311}  # remove workaround from pytest.ini once on beta3+
           - {name: '3.10',  python: '3.10',   tox: py310}
           - {name: '3.9',   python: '3.9',    tox: py39}
           - {name: '3.8',   python: '3.8',    tox: py38}

pytest.ini

@@ -7,6 +7,8 @@ addopts =
   --verbose
   --doctest-modules
   --doctest-glob=tests/*.txt
+  # workaround for Python 3.11 beta, see https://github.com/pytest-dev/pytest/issues/10008#issuecomment-1142722627
+  --assert=plain
 
 # pytest-doctest is missing too many features to use for the doctests in the Sphinx docs
 # (e.g. still no skipif support: https://github.com/thisch/pytest-sphinx/issues/9),

tox.ini

@@ -1,6 +1,6 @@
 [tox]
 envlist =
-  py3{10,9,8,7}
+  py3{11,10,9,8,7}
   pypy3{9,8,7}
   lint
   docs