fix kubectl wait with no resource name provided

pkg/kubectl/cmd/wait/wait.go

@@ -242,6 +242,9 @@ func (o *WaitOptions) RunWait() error {
 func IsDeleted(info *resource.Info, o *WaitOptions) (runtime.Object, bool, error) {
 	endTime := time.Now().Add(o.Timeout)
 	for {
+		if len(info.Name) == 0 {
+			return info.Object, false, fmt.Errorf("resource name must be provided")
+		}
 		gottenObj, err := o.DynamicClient.Resource(info.Mapping.Resource).Namespace(info.Namespace).Get(info.Name, metav1.GetOptions{})
 		if apierrors.IsNotFound(err) {
 			return info.Object, true, nil
@@ -308,6 +311,9 @@ type ConditionalWait struct {
 func (w ConditionalWait) IsConditionMet(info *resource.Info, o *WaitOptions) (runtime.Object, bool, error) {
 	endTime := time.Now().Add(o.Timeout)
 	for {
+		if len(info.Name) == 0 {
+			return info.Object, false, fmt.Errorf("resource name must be provided")
+		}
 		resourceVersion := ""
 		gottenObj, err := o.DynamicClient.Resource(info.Mapping.Resource).Namespace(info.Namespace).Get(info.Name, metav1.GetOptions{})
 		switch {

pkg/kubectl/cmd/wait/wait_test.go

@@ -378,6 +378,28 @@ func TestWaitForCondition(t *testing.T) {
 				}
 			},
 		},
+		{
+			name: "handles empty object name",
+			infos: []*resource.Info{
+				{
+					Mapping: &meta.RESTMapping{
+						Resource: schema.GroupVersionResource{Group: "group", Version: "version", Resource: "theresource"},
+					},
+					Namespace: "ns-foo",
+				},
+			},
+			fakeClient: func() *dynamicfakeclient.FakeDynamicClient {
+				return dynamicfakeclient.NewSimpleDynamicClient(scheme)
+			},
+			timeout:     10 * time.Second,
+			expectedErr: "resource name must be provided",
+
+			validateActions: func(t *testing.T, actions []clienttesting.Action) {
+				if len(actions) != 0 {
+					t.Fatal(spew.Sdump(actions))
+				}
+			},
+		},
 		{
 			name: "times out",
 			infos: []*resource.Info{