diff --git a/data_logging/tests/data/sample_data.json b/data_logging/tests/data/sample_data.json
new file mode 100644
index 0000000..366ce36
--- /dev/null
+++ b/data_logging/tests/data/sample_data.json
@@ -0,0 +1,17 @@
+[
+  {
+    "timestamp": "2024-06-01T10:00:00Z",
+    "temperature": 22.5,
+    "signal_noise_ratio": 18.7
+  },
+  {
+    "timestamp": "2024-06-01T10:05:00Z",
+    "temperature": 22.6,
+    "signal_noise_ratio": 19.1
+  },
+  {
+    "timestamp": "2024-06-01T10:10:00Z",
+    "temperature": 22.8,
+    "signal_noise_ratio": 18.9
+  }
+]
\ No newline at end of file