ci: gate native suites with isolated browser fixtures

.github/scripts/check_test_execution.py

@@ -0,0 +1,17 @@
+"""Reject skipped/empty native CI runs without conflating driver child counts."""
+import argparse
+from pathlib import Path
+import xml.etree.ElementTree as ET
+
+parser = argparse.ArgumentParser(description=__doc__)
+parser.add_argument('report', type=Path)
+parser.add_argument('--minimum', type=int, required=True)
+args = parser.parse_args()
+root = ET.parse(args.report).getroot()
+cases = list(root.iter('testcase'))
+if len(cases) < args.minimum:
+    raise SystemExit(f'Incomplete execution: {len(cases)} cases, expected at least {args.minimum}')
+for case in cases:
+    if any(case.find(tag) is not None for tag in ('skipped', 'failure', 'error')):
+        raise SystemExit(f'Case did not pass: {case.get("classname")}::{case.get("name")}')
+print(f'Verified {len(cases)} executed cases; no skipped, failed or errored cases')