diff --git a/dtmgrpc/type_test.go b/dtmgrpc/type_test.go
new file mode 100644
index 0000000..d6a80fc
--- /dev/null
+++ b/dtmgrpc/type_test.go
@@ -0,0 +1,12 @@
+package dtmgrpc
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func TestType(t *testing.T) {
+	_, err := BarrierFromGrpc(&BusiRequest{Info: &BranchInfo{}})
+	assert.Error(t, err)
+}