Enable default encoding warning where available. See PEP 597.

jaraco · jaraco · commit 284359e5123e · 2023-01-27T17:56:30.000-05:00
diff --git a/tox.ini b/tox.ini
@@ -8,10 +8,13 @@ toxworkdir={env:TOX_WORK_DIR:.tox}
 
 [testenv]
 deps =
+setenv =
+	PYTHONWARNDEFAULTENCODING = 1
 commands =
 	pytest {posargs}
 usedevelop = True
-extras = testing
+extras =
+	testing
 
 [testenv:docs]
 extras =
