diff --git a/3.snapshot_comparator/tests/data/sample_snapshot_before.json b/3.snapshot_comparator/tests/data/sample_snapshot_before.json
new file mode 100644
index 0000000..8d54c8e
--- /dev/null
+++ b/3.snapshot_comparator/tests/data/sample_snapshot_before.json
@@ -0,0 +1,22 @@
+[
+  {
+    "artifact_key": "artifact_A",
+    "status_before": "present",
+    "status_after": "present"
+  },
+  {
+    "artifact_key": "artifact_B",
+    "status_before": "missing",
+    "status_after": "missing"
+  },
+  {
+    "artifact_key": "artifact_C",
+    "status_before": "present",
+    "status_after": "missing"
+  },
+  {
+    "artifact_key": "artifact_D",
+    "status_before": "missing",
+    "status_after": "present"
+  }
+]
\ No newline at end of file