1 files changed, 9 insertions, 0 deletions
diff --git a/ops/optimizer_tests/incompatible_1.rs b/ops/optimizer_tests/incompatible_1.rs
new file mode 100644
index 000000000..326189aa1
--- /dev/null
+++ b/ops/optimizer_tests/incompatible_1.rs
@@ -0,0 +1,9 @@
+fn op_sync_serialize_object_with_numbers_as_keys(
+  value: serde_json::Value,
+) -> Result<(), Error> {
+  assert_eq!(
+    value.to_string(),
+    r#"{"lines":{"100":{"unit":"m"},"200":{"unit":"cm"}}}"#
+  );
+  Ok(())
+}