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.types.builtin;
  
  import org.testng.annotations.Test;
  
  public class VariantTest {
  
      @Test
      public void variantCanContainDataValue() {
          new Variant(new DataValue(Variant.NULL_VALUE));
      }
  
      @Test
      public void variantCanContainVariantArray() {
          new Variant(new Variant[]{new Variant(0), new Variant(1), new Variant(2)});
      }
  
      @Test(expectedExceptions = IllegalArgumentException.class)
      public void variantCannotContainVariant() {
          new Variant(new Variant(null));
      }
  
      @Test(expectedExceptions = IllegalArgumentException.class)
      public void variantCannotContainDiagnosticInfo() {
          new Variant(DiagnosticInfo.NULL_VALUE);
      }
  
  }
  