diff --git a/weed-fs/src/pkg/topology/topo_test.go b/weed-fs/src/pkg/topology/topo_test.go
new file mode 100644
index 000000000..92426fb5a
--- /dev/null
+++ b/weed-fs/src/pkg/topology/topo_test.go
@@ -0,0 +1,41 @@
+package topology
+
+import (
+    "testing"
+)
+
+func TestAddVolume(t *testing.T) {
+
+}
+
+func TestAddServer(t *testing.T) {
+
+}
+
+func TestAddRack(t *testing.T) {
+
+}
+
+func TestAddDataCenter(t *testing.T) {
+
+}
+
+func TestReserveVolume(t *testing.T) {
+
+}
+
+func TestRemoveVolume(t *testing.T) {
+
+}
+
+func TestRemoveServer(t *testing.T) {
+
+}
+
+func TestRemoveRack(t *testing.T) {
+
+}
+
+func TestRemoveDataCenter(t *testing.T) {
+
+}