yanglint TEST for --operational parameter
diff --git a/tools/lint/tests/interactive/data_operational.test b/tools/lint/tests/interactive/data_operational.test
new file mode 100644
index 0000000..3f95daf
--- /dev/null
+++ b/tools/lint/tests/interactive/data_operational.test
@@ -0,0 +1,24 @@
+source [expr {[info exists ::env(TESTS_DIR)] ? "$env(TESTS_DIR)/interactive/ly.tcl" : "ly.tcl"}]
+
+set ddir "$::env(TESTS_DIR)/data"
+set err1 "Operational datastore takes effect only with RPCs/Actions/Replies/Notifications input data types"
+
+test data_operational_twice {it is not allowed to specify more than one --operational parameter} {
+-setup $ly_setup -cleanup $ly_cleanup -body {
+ ly_cmd "load modoper-leafref"
+ ly_cmd "data -t notif -O $ddir/modconfig.xml -O $ddir/modleaf.xml" "cannot be set multiple times"
+}}
+
+test data_operational_no_type {--operational should be with parameter --type} {
+-setup $ly_setup -cleanup $ly_cleanup -body {
+ ly_cmd "load modoper-leafref"
+ ly_cmd_wrn "data -O $ddir/modconfig.xml $ddir/modoper_leafref_notif.xml" $err1
+}}
+
+test data_operational_missing {--operational is omitted and the datastore contents is in the data file} {
+-setup $ly_setup -cleanup $ly_cleanup -body {
+ ly_cmd "load modoper-leafref"
+ ly_cmd_err "data $ddir/modoper_leafref_notif_err.xml" "Failed to parse input data file"
+}}
+
+cleanupTests