diff --git a/tests/czechlight-cfg-fs/data/v0_sdn-roadm-line_empty/startup.json b/tests/czechlight-cfg-fs/data/v0_sdn-roadm-line_empty/startup.json
new file mode 100644
index 0000000..2c63c08
--- /dev/null
+++ b/tests/czechlight-cfg-fs/data/v0_sdn-roadm-line_empty/startup.json
@@ -0,0 +1,2 @@
+{
+}