Update setup.cfg

setup.cfg

@@ -60,3 +60,28 @@ dev =
     setuptools>=42
     setuptools-scm[toml]>=3.4
     wheel
+
+[tox:tox]
+envlist = py3.9
+
+[testenv]
+deps = -requirements-dev.txt
+commands =
+    coverage erase
+    coverage run -m pytest {posargs:tests}
+    coverage report
+
+[testenv:wheel]
+description = Generate wheel and tar.gz
+labels =
+    release
+    build
+skip_install = true
+deps =
+    build
+commands_pre =
+    -python -c 'import shutil,pathlib; \
+    shutil.rmtree("./build/", ignore_errors=True); \
+    shutil.rmtree("./dist/", ignore_errors=True)'
+commands =
+    python -m build