diff --git a/trace_agg/tests/data/sample_trace.json b/trace_agg/tests/data/sample_trace.json
new file mode 100644
index 0000000..55bf919
--- /dev/null
+++ b/trace_agg/tests/data/sample_trace.json
@@ -0,0 +1,30 @@
+[
+  {
+    "correlation_id": "case01",
+    "had_sched_switch": 1,
+    "had_irq": 0,
+    "had_softirq": 1,
+    "cpu_ids_seen": [0, 1]
+  },
+  {
+    "correlation_id": "case02",
+    "had_sched_switch": 0,
+    "had_irq": 1,
+    "had_softirq": 0,
+    "cpu_ids_seen": [2]
+  },
+  {
+    "correlation_id": "case03",
+    "had_sched_switch": 1,
+    "had_irq": 1,
+    "had_softirq": 1,
+    "cpu_ids_seen": [0, 1, 2]
+  },
+  {
+    "correlation_id": "case04",
+    "had_sched_switch": 0,
+    "had_irq": 0,
+    "had_softirq": 0,
+    "cpu_ids_seen": [3]
+  }
+]
\ No newline at end of file