diff --git a/sensor_logging/tests/data/sample_sensor_log.json b/sensor_logging/tests/data/sample_sensor_log.json
new file mode 100644
index 0000000..e96031b
--- /dev/null
+++ b/sensor_logging/tests/data/sample_sensor_log.json
@@ -0,0 +1,32 @@
+[
+  {
+    "sensor_id": "SensorA",
+    "temperature": 22.5,
+    "humidity": 45.2,
+    "timestamp": "2024-05-18T14:30:00Z"
+  },
+  {
+    "sensor_id": "SensorB",
+    "temperature": 21.8,
+    "humidity": 47.0,
+    "timestamp": "2024-05-18T14:31:00Z"
+  },
+  {
+    "sensor_id": "SensorA",
+    "temperature": 22.6,
+    "humidity": 44.8,
+    "timestamp": "2024-05-18T14:32:00Z"
+  },
+  {
+    "sensor_id": "SensorC",
+    "temperature": 23.1,
+    "humidity": 43.5,
+    "timestamp": "2024-05-18T14:33:30Z"
+  },
+  {
+    "sensor_id": "SensorA",
+    "temperature": -1.2,
+    "humidity": 99.9,
+    "timestamp": "2024-05-18T23:59:59Z"
+  }
+]
\ No newline at end of file