MsgBatchCancel Skip sequence number validation (#1698)

protocol/app/ante/util.go

@@ -34,6 +34,10 @@ func ShouldSkipSequenceValidation(msgs []sdk.Msg) (shouldSkipValidation bool) {
 			}
 			// This is a `GoodTilBlock` message, continue to check the next message.
 			continue
+		case
+			*clobtypes.MsgBatchCancel:
+			// MsgBatchCancel only supports short term orders.
+			continue
 		default:
 			// Early return for messages that require sequence number validation.
 			return false

protocol/app/ante/util_test.go

@@ -28,6 +28,12 @@ func TestSkipSequenceValidation(t *testing.T) {
 			},
 			shouldSkipValidation: true,
 		},
+		"single batch cancel message": {
+			msgs: []sdk.Msg{
+				constants.Msg_BatchCancel,
+			},
+			shouldSkipValidation: true,
+		},
 		"single transfer message": {
 			msgs: []sdk.Msg{
 				constants.Msg_Transfer,
@@ -86,6 +92,13 @@ func TestSkipSequenceValidation(t *testing.T) {
 			},
 			shouldSkipValidation: false,
 		},
+		"mix of conditional orders and short term batch cancel orders": {
+			msgs: []sdk.Msg{
+				constants.Msg_BatchCancel,
+				constants.Msg_PlaceOrder_Conditional,
+			},
+			shouldSkipValidation: false,
+		},
 	}
 	for name, tc := range testCases {
 		t.Run(name, func(t *testing.T) {