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   * Licensed to the Apache Software Foundation (ASF) under one
   * or more contributor license agreements.  See the NOTICE file
   * distributed with this work for additional information
   * regarding copyright ownership.  The ASF licenses this file
   * to you under the Apache License, Version 2.0 (the
   * "License"); you may not use this file except in compliance
   * with the License.  You may obtain a copy of the License at
   *
   *     https://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  package org.apache.avro.generic;
  
  import static org.junit.jupiter.api.Assertions.assertEquals;
  import static org.junit.jupiter.api.Assertions.assertTrue;
  import static org.junit.jupiter.api.Assertions.assertFalse;
  
  import java.math.BigDecimal;
  import java.math.BigInteger;
  import java.nio.ByteBuffer;
  import java.util.ArrayList;
  import java.util.Arrays;
  import java.util.Collections;
  import java.util.HashMap;
  import java.util.Map;
  
  import org.apache.avro.Foo;
  import org.apache.avro.Interop;
  import org.apache.avro.Kind;
  import org.apache.avro.MD5;
  import org.apache.avro.Node;
  import org.apache.avro.Schema.Field;
  import org.apache.avro.Schema.Type;
  import org.apache.avro.specific.SpecificData;
  import org.junit.jupiter.api.Test;
  import test.StringablesRecord;
  
  /** Unit test for performing a deep copy of an object with a schema */
  public class TestDeepCopy {
    @Test
    void deepCopy() {
      // Set all non-default fields in an Interop instance:
      Interop.Builder interopBuilder = Interop.newBuilder();
      interopBuilder.setArrayField(Arrays.asList(1.1, 1.2, 1.3, 1.4));
      interopBuilder.setBoolField(true);
      interopBuilder.setBytesField(ByteBuffer.wrap(new byte[] { 1, 2, 3, 4 }));
      interopBuilder.setDoubleField(3.14d);
      interopBuilder.setEnumField(Kind.B);
      interopBuilder.setFixedField(new MD5(new byte[] { 4, 3, 2, 1, 4, 3, 2, 1, 4, 3, 2, 1, 4, 3, 2, 1 }));
      interopBuilder.setFloatField(6.022f);
      interopBuilder.setIntField(32);
      interopBuilder.setLongField(64L);
  
      Map<java.lang.String, org.apache.avro.Foo> map = new HashMap<>(1);
      map.put("foo", Foo.newBuilder().setLabel("bar").build());
      interopBuilder.setMapField(map);
  
      interopBuilder.setNullField(null);
  
      Node.Builder rootBuilder = Node.newBuilder().setLabel("/");
      Node.Builder homeBuilder = Node.newBuilder().setLabel("home");
      homeBuilder.setChildren(new ArrayList<>(0));
      rootBuilder.setChildren(Collections.singletonList(homeBuilder.build()));
      interopBuilder.setRecordField(rootBuilder.build());
  
      interopBuilder.setStringField("Hello");
      interopBuilder.setUnionField(Collections.singletonList(ByteBuffer.wrap(new byte[] { 1, 2 })));
  
      Interop interop = interopBuilder.build();
  
      // Verify that deepCopy works for all fields:
      for (Field field : Interop.SCHEMA$.getFields()) {
        // Original field and deep copy should be equivalent:
        if (interop.get(field.pos()) instanceof ByteBuffer) {
          assertTrue(Arrays.equals(((ByteBuffer) interop.get(field.pos())).array(),
              ((ByteBuffer) GenericData.get().deepCopy(field.schema(), interop.get(field.pos()))).array()));
        } else {
          assertEquals(interop.get(field.pos()), SpecificData.get().deepCopy(field.schema(), interop.get(field.pos())));
        }
  
        // Original field and deep copy should be different instances:
        if ((field.schema().getType() != Type.ENUM) && (field.schema().getType() != Type.NULL)
            && (field.schema().getType() != Type.BOOLEAN) && (field.schema().getType() != Type.INT)
            && (field.schema().getType() != Type.LONG) && (field.schema().getType() != Type.FLOAT)
            && (field.schema().getType() != Type.DOUBLE) && (field.schema().getType() != Type.STRING)) {
  
          assertFalse(interop.get(field.pos()) == GenericData.get().deepCopy(field.schema(), interop.get(field.pos())),
              "Field " + field.name() + " is same instance in deep copy");
        }
      }
    }
  
    @Test
    void javaClassDeepCopy() {
      // Test java-class deep copy. See AVRO-2438
      StringablesRecord.Builder builder = StringablesRecord.newBuilder();
      builder.setValue(new BigDecimal("1314.11"));
  
      HashMap<String, BigDecimal> mapWithBigDecimalElements = new HashMap<>();
      mapWithBigDecimalElements.put("testElement", new BigDecimal("220.11"));
      builder.setMapWithBigDecimalElements(mapWithBigDecimalElements);
  
      HashMap<BigInteger, String> mapWithBigIntKeys = new HashMap<>();
      mapWithBigIntKeys.put(BigInteger.ONE, "testKey");
      builder.setMapWithBigIntKeys(mapWithBigIntKeys);
  
      StringablesRecord javaClassString = builder.build();
  
      for (Field field : StringablesRecord.SCHEMA$.getFields()) {
        assertEquals(javaClassString.get(field.pos()),
            SpecificData.get().deepCopy(field.schema(), javaClassString.get(field.pos())));
      }
  
    }
  }
  