Verify namespace is not set on root objects

pkg/kubectl/resource/builder_test.go

@@ -147,6 +147,15 @@ func streamYAMLTestData() (io.Reader, *api.PodList, *api.ServiceList) {
 	return r, pods, svc
 }
 
+func streamTestObject(obj runtime.Object) io.Reader {
+	r, w := io.Pipe()
+	go func() {
+		defer w.Close()
+		w.Write([]byte(runtime.EncodeOrDie(latest.Codec, obj)))
+	}()
+	return r
+}
+
 type testVisitor struct {
 	InjectErr error
 	Infos     []*Info
@@ -617,6 +626,31 @@ func TestSingularObject(t *testing.T) {
 	}
 }
 
+func TestSingularRootScopedObject(t *testing.T) {
+	node := &api.Node{ObjectMeta: api.ObjectMeta{Name: "test"}, Spec: api.NodeSpec{ExternalID: "test"}}
+	r := streamTestObject(node)
+	infos, err := NewBuilder(latest.RESTMapper, api.Scheme, fakeClient()).
+		NamespaceParam("test").DefaultNamespace().
+		Stream(r, "STDIN").
+		Flatten().
+		Do().Infos()
+
+	if err != nil || len(infos) != 1 {
+		t.Fatalf("unexpected error: %v", err)
+	}
+
+	if infos[0].Namespace != "" {
+		t.Errorf("namespace should be empty: %#v", infos[0])
+	}
+	n, ok := infos[0].Object.(*api.Node)
+	if !ok {
+		t.Fatalf("unexpected object: %#v", infos[0].Object)
+	}
+	if n.Name != "test" || n.Namespace != "" {
+		t.Errorf("unexpected object: %#v", n)
+	}
+}
+
 func TestListObject(t *testing.T) {
 	pods, _ := testData()
 	labelKey := api.LabelSelectorQueryParam(testapi.Version())