Make XFAILS strict by default

ArBridgeman · ArBridgeman · commit 9f0da2e593b2 · 2025-11-17T10:35:49.000+01:00
diff --git a/pyproject.toml b/pyproject.toml
@@ -84,6 +84,7 @@ filterwarnings = [
 markers = [
     "backend: backend tests.",
 ]
+xfail_strict = true
 
 [tool.black]
 line-length = 88
