diff --git a/artifact_2/tests/data/sample_log_entries.json b/artifact_2/tests/data/sample_log_entries.json
new file mode 100644
index 0000000..ea32e83
--- /dev/null
+++ b/artifact_2/tests/data/sample_log_entries.json
@@ -0,0 +1,23 @@
+[
+  {
+    "epoch_ms": 1679728800000,
+    "monotonic_ns": 1000000000000,
+    "tz_offset_minutes": 60,
+    "run_id": "run_001",
+    "step_id": "step_001"
+  },
+  {
+    "epoch_ms": 1679732400000,
+    "monotonic_ns": 1003600000000,
+    "tz_offset_minutes": 120,
+    "run_id": "run_001",
+    "step_id": "step_002"
+  },
+  {
+    "epoch_ms": 1679736000000,
+    "monotonic_ns": 1007200000000,
+    "tz_offset_minutes": 120,
+    "run_id": "run_001",
+    "step_id": "step_003"
+  }
+]
\ No newline at end of file