content: /*
   * 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;
  
  import org.apache.avro.generic.GenericData;
  import org.apache.avro.generic.GenericDatumReader;
  import org.apache.avro.io.DatumReader;
  import org.apache.avro.io.DecoderFactory;
  import org.apache.avro.io.JsonDecoder;
  import org.junit.jupiter.api.Test;
  import java.io.ByteArrayInputStream;
  import java.io.IOException;
  
  import static java.nio.charset.StandardCharsets.UTF_8;
  import static org.hamcrest.CoreMatchers.equalTo;
  import static org.hamcrest.MatcherAssert.assertThat;
  
  /**
   * This test demonstrates the fix for a complex nested schema type.
   */
  public class TestNestedRecords {
  
    @Test
    void singleSubRecord() throws IOException {
  
      final Schema child = SchemaBuilder.record("Child").namespace("org.apache.avro.nested").fields()
          .requiredString("childField").endRecord();
  
      final Schema parent = SchemaBuilder.record("Parent").namespace("org.apache.avro.nested").fields()
          .requiredString("parentField1").name("child1").type(child).noDefault().requiredString("parentField2")
          .endRecord();
  
      final String inputAsExpected = "{\n" + " \"parentField1\": \"parentValue1\",\n" + " \"child1\":{\n"
          + "    \"childField\":\"childValue1\"\n" + " },\n" + " \"parentField2\":\"parentValue2\"\n" + "}";
  
      final ByteArrayInputStream inputStream = new ByteArrayInputStream(inputAsExpected.getBytes(UTF_8));
  
      final JsonDecoder decoder = DecoderFactory.get().jsonDecoder(parent, inputStream);
      final DatumReader<Object> reader = new GenericDatumReader<>(parent);
  
      final GenericData.Record decoded = (GenericData.Record) reader.read(null, decoder);
  
      assertThat(decoded.get("parentField1").toString(), equalTo("parentValue1"));
      assertThat(decoded.get("parentField2").toString(), equalTo("parentValue2"));
  
      assertThat(((GenericData.Record) decoded.get("child1")).get("childField").toString(), equalTo("childValue1"));
  
    }
  
    @Test
    void singleSubRecordExtraField() throws IOException {
  
      final Schema child = SchemaBuilder.record("Child").namespace("org.apache.avro.nested").fields()
          .requiredString("childField").endRecord();
  
      final Schema parent = SchemaBuilder.record("Parent").namespace("org.apache.avro.nested").fields()
          .requiredString("parentField1").name("child1").type(child).noDefault().requiredString("parentField2")
          .endRecord();
  
      final String inputAsExpected = "{\n" + " \"parentField1\": \"parentValue1\",\n" + " \"child1\":{\n"
          + "    \"childField\":\"childValue1\",\n" +
  
          // this field should be safely ignored
          "    \"extraField\":\"extraValue\"\n" + " },\n" + " \"parentField2\":\"parentValue2\"\n" + "}";
  
      final ByteArrayInputStream inputStream = new ByteArrayInputStream(inputAsExpected.getBytes(UTF_8));
  
      final JsonDecoder decoder = DecoderFactory.get().jsonDecoder(parent, inputStream);
      final DatumReader<Object> reader = new GenericDatumReader<>(parent);
  
      final GenericData.Record decoded = (GenericData.Record) reader.read(null, decoder);
  
      assertThat(decoded.get("parentField1").toString(), equalTo("parentValue1"));
      assertThat(decoded.get("parentField2").toString(), equalTo("parentValue2"));
  
      assertThat(((GenericData.Record) decoded.get("child1")).get("childField").toString(), equalTo("childValue1"));
  
    }
  
  }
  