diff --git a/artifact.preflight_checker/tests/data/sample_valid_runs.json b/artifact.preflight_checker/tests/data/sample_valid_runs.json
new file mode 100644
index 0000000..774d2d1
--- /dev/null
+++ b/artifact.preflight_checker/tests/data/sample_valid_runs.json
@@ -0,0 +1,20 @@
+[
+  {
+    "run_id": 40,
+    "timestamp": "2024-06-18T10:15:00Z",
+    "metrics": {
+      "near_expiry_unpinned": 0.045,
+      "freeze_target": 0.05,
+      "freeze_tol": 0.01
+    }
+  },
+  {
+    "run_id": 41,
+    "timestamp": "2024-06-18T11:00:00Z",
+    "metrics": {
+      "near_expiry_unpinned": 0.065,
+      "freeze_target": 0.05,
+      "freeze_tol": 0.01
+    }
+  }
+]
\ No newline at end of file