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.serialization.binary;
  
  import org.eclipse.milo.opcua.stack.core.types.builtin.ByteString;
  import org.eclipse.milo.opcua.stack.core.types.builtin.ExtensionObject;
  import org.eclipse.milo.opcua.stack.core.types.builtin.NodeId;
  import org.eclipse.milo.opcua.stack.core.types.builtin.XmlElement;
  import org.testng.annotations.DataProvider;
  import org.testng.annotations.Test;
  
  import static org.testng.Assert.assertEquals;
  
  public class ExtensionObjectSerializationTest extends BinarySerializationFixture {
  
      @DataProvider
      public Object[][] getExtensionObjects() {
          return new Object[][]{
              {new ExtensionObject(ByteString.of(new byte[]{1, 2, 3, 4}), new NodeId(1, 2))},
              {new ExtensionObject(XmlElement.of("<a>hello</a>"), new NodeId(1, 2))},
          };
      }
  
      @Test(dataProvider = "getExtensionObjects", description = "ExtensionObject is round-trip serializable.")
      public void testExtensionObjectRoundTrip(ExtensionObject xo) throws Exception {
          writer.writeExtensionObject(xo);
          ExtensionObject decoded = reader.readExtensionObject();
  
          assertEquals(decoded, xo);
      }
  
  }
  