oldPod                              *api.PodSpec
		newPod                              *api.PodSpec
		wantPod                             *api.PodSpec
	}{
		{
			description: "feature gate disabled, cannot add CTB volume to pod",
			oldPod: &api.PodSpec{
				Volumes: []api.Volume{},
			},
			newPod: &api.PodSpec{
				Volumes: []api.Volume{
					{
						Name: "foo",
						VolumeSource: api.VolumeSource{