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;
  
  import java.util.List;
  
  import com.google.common.collect.Lists;
  import org.testng.annotations.Test;
  
  import static org.testng.Assert.assertEquals;
  import static org.testng.Assert.assertFalse;
  
  public class AttributeIdTest {
  
      @Test
      public void testFrom() {
          for (AttributeId attributeId : AttributeId.values()) {
              int id = attributeId.id();
  
              assertEquals(attributeId, AttributeId.from(id).get());
          }
  
          assertFalse(AttributeId.from(-1).isPresent());
          assertFalse(AttributeId.from(0).isPresent());
          assertFalse(AttributeId.from(23).isPresent());
      }
  
      @Test
      public void testOrdering() {
          List<AttributeId> attributes = Lists.newArrayList(AttributeId.VARIABLE_TYPE_ATTRIBUTES);
  
          assertEquals(AttributeId.NodeId, attributes.get(0));
          assertEquals(AttributeId.NodeClass, attributes.get(1));
          assertEquals(AttributeId.BrowseName, attributes.get(2));
          assertEquals(AttributeId.DisplayName, attributes.get(3));
          assertEquals(AttributeId.Description, attributes.get(4));
          assertEquals(AttributeId.WriteMask, attributes.get(5));
          assertEquals(AttributeId.UserWriteMask, attributes.get(6));
  
          assertEquals(AttributeId.Value, attributes.get(7));
          assertEquals(AttributeId.DataType, attributes.get(8));
          assertEquals(AttributeId.ValueRank, attributes.get(9));
          assertEquals(AttributeId.ArrayDimensions, attributes.get(10));
          assertEquals(AttributeId.IsAbstract, attributes.get(11));
      }
  
  }
  