@Test
public void testGetKubernetesClientNullClientCertificate() throws Exception {

  var clusterCaCertificate = Resources.toString(Resources.getResource("ca.crt"), UTF_8);
  var clientKey = Resources.toString(Resources.getResource("client.key"), UTF_8);
  exception.expect(NullPointerException.class);
  getKubernetesClient("", clusterCaCertificate, null, clientKey);
}