def METHOD_NAME(self, kube_version):
    """Test that nats configmap has cluster name defined."""
    values = {
        "nats": {},
    }
    docs = render_chart(
        kube_version=kube_version,
        show_only=["charts/nats/templates/configmap.yaml"],
        values=values,
    )
    nats_cm = docs[0]["data"]["nats.conf"]
    assert "release-name-nats" in nats_cm