diff --git a/testdata/easy_3tunnels_errors.json b/testdata/easy_3tunnels_errors.json
new file mode 100644
index 0000000..0c3e24b
--- /dev/null
+++ b/testdata/easy_3tunnels_errors.json
@@ -0,0 +1,15 @@
+{
+  "errors": {
+    "missing_distributors": [],
+    "missing_sensors": [],
+    "missing_tunnel": [],
+    "overdefined_tunnel": [
+      "TUNNEL2"
+    ]
+  },
+  "warnings": {
+    "missing_attributes": {
+      "BX0101": "Nur ein Block und/oder fehlende Attribute: dict_keys(['A', 'B', 'C', 'ARTINR', 'BESCHR', 'MENGE', 'POSITION', 'GRUPPE', 'ETIKETTE', 'AUFLOESE', 'pos'])"
+    }
+  }
+}