diff --git a/trace_agg_tests/tests/data/test_data.json b/trace_agg_tests/tests/data/test_data.json
new file mode 100644
index 0000000..7d5131f
--- /dev/null
+++ b/trace_agg_tests/tests/data/test_data.json
@@ -0,0 +1,17 @@
+{
+  "input": [
+    {"event": "clocksource", "value": 10},
+    {"event": "clocksource", "value": 20},
+    {"event": "clocksource_switch", "value": 5},
+    {"event": "other_event", "value": 2},
+    {"event": "clocksource", "value": 12},
+    {"event": "clocksource_switch", "value": 8},
+    {"event": "clocksource", "value": 15},
+    {"event": "clocksource_switch", "value": 6}
+  ],
+  "expected_output": {
+    "clocksource": 57,
+    "clocksource_switch": 19,
+    "other_event": 2
+  }
+}
\ No newline at end of file