diff --git a/tests/czechlight-cfg-fs/data/v0_sdn-roadm-line_empty/cmdline b/tests/czechlight-cfg-fs/data/v0_sdn-roadm-line_empty/cmdline
new file mode 100644
index 0000000..6b1d906
--- /dev/null
+++ b/tests/czechlight-cfg-fs/data/v0_sdn-roadm-line_empty/cmdline
@@ -0,0 +1 @@
+czechlight=sdn-roadm-line