fix kubectl set subject --all option invalid bug

hack/make-rules/test-cmd-util.sh

@@ -3828,6 +3828,12 @@ run_clusterroles_tests() {
   kube::test::get_object_assert clusterrolebinding/super-sa "{{range.subjects}}{{.namespace}}:{{end}}" 'otherns:otherfoo:'
   kube::test::get_object_assert clusterrolebinding/super-sa "{{range.subjects}}{{.name}}:{{end}}" 'sa-name:foo:'
 
+  # test `kubectl set subject clusterrolebinding --all`
+  kubectl set subject "${kube_flags[@]}" clusterrolebinding --all --user=test-all-user
+  kube::test::get_object_assert clusterrolebinding/super-admin "{{range.subjects}}{{.name}}:{{end}}" 'super-admin:foo:test-all-user:'
+  kube::test::get_object_assert clusterrolebinding/super-group "{{range.subjects}}{{.name}}:{{end}}" 'the-group:foo:test-all-user:'
+  kube::test::get_object_assert clusterrolebinding/super-sa "{{range.subjects}}{{.name}}:{{end}}" 'sa-name:foo:test-all-user:'
+
   # test `kubectl create rolebinding`
   # test `kubectl set subject rolebinding`
   kubectl create "${kube_flags[@]}" rolebinding admin --clusterrole=admin --user=default-admin
@@ -3849,6 +3855,12 @@ run_clusterroles_tests() {
   kube::test::get_object_assert rolebinding/sarole "{{range.subjects}}{{.namespace}}:{{end}}" 'otherns:otherfoo:'
   kube::test::get_object_assert rolebinding/sarole "{{range.subjects}}{{.name}}:{{end}}" 'sa-name:foo:'
 
+  # test `kubectl set subject rolebinding --all`
+  kubectl set subject "${kube_flags[@]}" rolebinding --all --user=test-all-user
+  kube::test::get_object_assert rolebinding/admin "{{range.subjects}}{{.name}}:{{end}}" 'default-admin:foo:test-all-user:'
+  kube::test::get_object_assert rolebinding/localrole "{{range.subjects}}{{.name}}:{{end}}" 'the-group:foo:test-all-user:'
+  kube::test::get_object_assert rolebinding/sarole "{{range.subjects}}{{.name}}:{{end}}" 'sa-name:foo:test-all-user:'
+
   set +o nounset
   set +o errexit
 }

pkg/kubectl/cmd/set/set_subject.go

@@ -262,7 +262,9 @@ func (o *SubjectOptions) Run(fn updateSubjects) error {
 			continue
 		}
 
-		return o.PrintObj(actual, o.Out)
+		if err := o.PrintObj(actual, o.Out); err != nil {
+			allErrs = append(allErrs, err)
+		}
 	}
 	return utilerrors.NewAggregate(allErrs)
 }