diff --git a/rollout_data_analysis/tests/data/unknown_whitelist.json b/rollout_data_analysis/tests/data/unknown_whitelist.json
new file mode 100644
index 0000000..d0e6efb
--- /dev/null
+++ b/rollout_data_analysis/tests/data/unknown_whitelist.json
@@ -0,0 +1,23 @@
+[
+  {
+    "key": "event_type_missing",
+    "scope": "both",
+    "rationale": "Bekanntes Logging-Attribut fehlt in einigen alten Rollouts",
+    "added_at": "2023-11-12T10:15:00Z",
+    "expires_at": "2025-01-01T00:00:00Z"
+  },
+  {
+    "key": "metric_precision_loss",
+    "scope": "unpinned",
+    "rationale": "Tolerierbares Rundungsrauschen in neuem Metrikformat",
+    "added_at": "2024-02-01T08:00:00Z",
+    "expires_at": null
+  },
+  {
+    "key": "deprecated_endpoint",
+    "scope": "pinned",
+    "rationale": "Übergangsfeature bis Migration abgeschlossen ist",
+    "added_at": "2024-06-15T09:30:00Z",
+    "expires_at": "2024-12-31T23:59:59Z"
+  }
+]
\ No newline at end of file