code: /*
   * Copyright (c) 2019 the Eclipse Milo Authors
   *
   * This program and the accompanying materials are made
   * available under the terms of the Eclipse Public License 2.0
   * which is available at https://www.eclipse.org/legal/epl-2.0/
   *
   * SPDX-License-Identifier: EPL-2.0
   */
  
  package org.eclipse.milo.opcua.stack.core.security;
  
  import java.security.KeyPair;
  import java.security.cert.X509Certificate;
  
  import org.testng.annotations.Test;
  
  import static org.testng.Assert.expectThrows;
  
  public class DefaultCertificateManagerTest {
  
      @Test
      public void testNullPrivateKeyOrCertificateFails() {
          expectThrows(
              Exception.class,
              () -> new DefaultCertificateManager((KeyPair) null, (X509Certificate) null)
          );
  
          expectThrows(
              Exception.class,
              () -> new DefaultCertificateManager().add(null, (X509Certificate) null)
          );
      }
  
  }
  