diff --git a/stability_analysis/tests/data/sample_run.json b/stability_analysis/tests/data/sample_run.json
new file mode 100644
index 0000000..55c5aac
--- /dev/null
+++ b/stability_analysis/tests/data/sample_run.json
@@ -0,0 +1,12 @@
+{
+  "stable_cluster": ["runner_A-step_1", "runner_B-step_3"],
+  "outlier_counts": {
+    "expires_at_dist_hours": 2,
+    "retry_total_overhead_ms": 1
+  },
+  "patterns": [
+    "constant_runtime_pattern",
+    "periodic_load_variation",
+    "low_latency_streak"
+  ]
+}
\ No newline at end of file