diff --git a/tests/unit/storage_box_types/test_domain.py b/tests/unit/storage_box_types/test_domain.py
new file mode 100644
index 00000000..65dbd80f
--- /dev/null
+++ b/tests/unit/storage_box_types/test_domain.py
@@ -0,0 +1,15 @@
+from __future__ import annotations
+
+import pytest
+
+from hcloud.storage_box_types import StorageBoxType
+
+
+@pytest.mark.parametrize(
+    "value",
+    [
+        (StorageBoxType(id=1),),
+    ],
+)
+def test_eq(value):
+    assert value == value