diff --git a/clocksource_switch_analysis/tests/data/sample_trace.json b/clocksource_switch_analysis/tests/data/sample_trace.json
new file mode 100644
index 0000000..cf33efb
--- /dev/null
+++ b/clocksource_switch_analysis/tests/data/sample_trace.json
@@ -0,0 +1,38 @@
+[
+  {
+    "timestamp": 1.001,
+    "cpu_id": 0,
+    "seqcount_retry_count": 0,
+    "clocksource": "tsc"
+  },
+  {
+    "timestamp": 1.023,
+    "cpu_id": 1,
+    "seqcount_retry_count": 1,
+    "clocksource": "tsc"
+  },
+  {
+    "timestamp": 1.050,
+    "cpu_id": 0,
+    "seqcount_retry_count": 2,
+    "clocksource": "hpet"
+  },
+  {
+    "timestamp": 1.075,
+    "cpu_id": 2,
+    "seqcount_retry_count": 0,
+    "clocksource": "tsc"
+  },
+  {
+    "timestamp": 1.120,
+    "cpu_id": 3,
+    "seqcount_retry_count": 0,
+    "clocksource": "tsc"
+  },
+  {
+    "timestamp": 1.180,
+    "cpu_id": 1,
+    "seqcount_retry_count": 3,
+    "clocksource": "hpet"
+  }
+]
\ No newline at end of file