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.io.parsing;
  
  import java.io.ByteArrayInputStream;
  import java.io.ByteArrayOutputStream;
  import java.io.IOException;
  import java.io.StringReader;
  import java.io.UncheckedIOException;
  import java.util.Arrays;
  import java.util.Collection;
  import java.util.stream.Stream;
  
  import com.fasterxml.jackson.core.JsonFactory;
  import com.fasterxml.jackson.databind.JsonNode;
  import com.fasterxml.jackson.databind.ObjectMapper;
  import org.apache.avro.AvroTypeException;
  import org.apache.avro.Schema;
  import org.apache.avro.SchemaBuilder;
  import org.apache.avro.file.DataFileStream;
  import org.apache.avro.file.DataFileWriter;
  import org.apache.avro.generic.GenericData;
  import org.apache.avro.generic.GenericDatumReader;
  import org.apache.avro.generic.GenericDatumWriter;
  import org.apache.avro.generic.GenericRecordBuilder;
  import org.apache.avro.io.Encoder;
  import org.apache.avro.io.EncoderFactory;
  
  import org.junit.jupiter.api.Assertions;
  import org.junit.jupiter.api.Test;
  import org.junit.jupiter.params.ParameterizedTest;
  import org.junit.jupiter.params.provider.Arguments;
  import org.junit.jupiter.params.provider.MethodSource;
  
  import static org.apache.avro.TestSchemas.ENUM1_AB_SCHEMA_NAMESPACE_1;
  import static org.apache.avro.TestSchemas.ENUM1_AB_SCHEMA_NAMESPACE_2;
  
  public class TestResolvingGrammarGenerator {
  
    @ParameterizedTest
    @MethodSource("data")
    void test(Schema schema, JsonNode data) throws IOException {
      ByteArrayOutputStream baos = new ByteArrayOutputStream();
      EncoderFactory factory = EncoderFactory.get();
      Encoder e = factory.validatingEncoder(schema, factory.binaryEncoder(baos, null));
  
      ResolvingGrammarGenerator.encode(e, schema, data);
      e.flush();
    }
  
    @Test
    void recordMissingRequiredFieldError() throws Exception {
      Schema schemaWithoutField = SchemaBuilder.record("MyRecord").namespace("ns").fields().name("field1").type()
          .stringType().noDefault().endRecord();
      Schema schemaWithField = SchemaBuilder.record("MyRecord").namespace("ns").fields().name("field1").type()
          .stringType().noDefault().name("field2").type().stringType().noDefault().endRecord();
      GenericData.Record record = new GenericRecordBuilder(schemaWithoutField).set("field1", "someValue").build();
      byte[] data = writeRecord(schemaWithoutField, record);
      try {
        readRecord(schemaWithField, data);
        Assertions.fail("Expected exception not thrown");
      } catch (AvroTypeException typeException) {
        Assertions.assertEquals("Found ns.MyRecord, expecting ns.MyRecord, missing required field field2",
            typeException.getMessage(), "Incorrect exception message");
      }
    }
  
    @Test
    void differingEnumNamespaces() throws Exception {
      Schema schema1 = SchemaBuilder.record("MyRecord").fields().name("field").type(ENUM1_AB_SCHEMA_NAMESPACE_1)
          .noDefault().endRecord();
      Schema schema2 = SchemaBuilder.record("MyRecord").fields().name("field").type(ENUM1_AB_SCHEMA_NAMESPACE_2)
          .noDefault().endRecord();
      GenericData.EnumSymbol genericEnumSymbol = new GenericData.EnumSymbol(ENUM1_AB_SCHEMA_NAMESPACE_1, "A");
      GenericData.Record record = new GenericRecordBuilder(schema1).set("field", genericEnumSymbol).build();
      byte[] data = writeRecord(schema1, record);
      Assertions.assertEquals(genericEnumSymbol, readRecord(schema1, data).get("field"));
      Assertions.assertEquals(genericEnumSymbol, readRecord(schema2, data).get("field"));
    }
  
    public static Stream<Arguments> data() {
      Collection<String[]> ret = Arrays.asList(new String[][] {
          { "{ \"type\": \"record\", \"name\": \"r\", \"fields\": [ " + " { \"name\" : \"f1\", \"type\": \"int\" }, "
              + " { \"name\" : \"f2\", \"type\": \"float\" } " + "] }", "{ \"f2\": 10.4, \"f1\": 10 } " },
          { "{ \"type\": \"enum\", \"name\": \"e\", \"symbols\": " + "[ \"s1\", \"s2\"] }", " \"s1\" " },
          { "{ \"type\": \"enum\", \"name\": \"e\", \"symbols\": " + "[ \"s1\", \"s2\"] }", " \"s2\" " },
          { "{ \"type\": \"fixed\", \"name\": \"f\", \"size\": 10 }", "\"hello\"" },
          { "{ \"type\": \"array\", \"items\": \"int\" }", "[ 10, 20, 30 ]" },
          { "{ \"type\": \"map\", \"values\": \"int\" }", "{ \"k1\": 10, \"k3\": 20, \"k3\": 30 }" },
          { "[ \"int\", \"long\" ]", "10" }, { "\"string\"", "\"hello\"" }, { "\"bytes\"", "\"hello\"" },
          { "\"int\"", "10" }, { "\"long\"", "10" }, { "\"float\"", "10.0" }, { "\"double\"", "10.0" },
          { "\"boolean\"", "true" }, { "\"boolean\"", "false" }, { "\"null\"", "null" }, });
  
      final JsonFactory factory = new JsonFactory();
      final ObjectMapper mapper = new ObjectMapper(factory);
  
      return ret.stream().map((String[] args) -> {
        Schema schema = new Schema.Parser().parse(args[0]);
        try {
          JsonNode data = mapper.readTree(new StringReader(args[1]));
          return Arguments.of(schema, data);
        } catch (IOException ex) {
          throw new UncheckedIOException(ex);
        }
      });
    }
  
    private byte[] writeRecord(Schema schema, GenericData.Record record) throws Exception {
      ByteArrayOutputStream byteStream = new ByteArrayOutputStream();
      GenericDatumWriter<GenericData.Record> datumWriter = new GenericDatumWriter<>(schema);
      try (DataFileWriter<GenericData.Record> writer = new DataFileWriter<>(datumWriter)) {
        writer.create(schema, byteStream);
        writer.append(record);
      }
      return byteStream.toByteArray();
    }
  
    private GenericData.Record readRecord(Schema schema, byte[] data) throws Exception {
      ByteArrayInputStream byteStream = new ByteArrayInputStream(data);
      GenericDatumReader<GenericData.Record> datumReader = new GenericDatumReader<>(schema);
      try (DataFileStream<GenericData.Record> reader = new DataFileStream<>(byteStream, datumReader)) {
        return reader.next();
      }
    }
  }
  