/**
 * 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
 *
 *     http://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.tool;

import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.PrintStream;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import java.util.Iterator;

import org.apache.avro.Schema;
import org.apache.avro.file.DataFileWriter;
import org.apache.avro.generic.GenericDatumWriter;
import org.apache.trevni.avro.AvroColumnReader;
import org.apache.trevni.avro.RandomData;

import org.junit.Test;
import static org.junit.Assert.assertEquals;

public class TestToTrevniTool {
  private static final int COUNT =
    Integer.parseInt(System.getProperty("test.count", "200"));
  private static final File DIR
    = new File(System.getProperty("test.dir", "/tmp"));
  private static final File AVRO_FILE = new File(DIR, "random.avro");
  private static final File TREVNI_FILE = new File(DIR, "random.trv");
  private static final File SCHEMA_FILE =
    new File("../../../share/test/schemas/weather.avsc");

  private String run(String... args) throws Exception {
    ByteArrayOutputStream baos = new ByteArrayOutputStream();
    PrintStream p = new PrintStream(baos);
    new ToTrevniTool().run(null, p, null, Arrays.asList(args));
    return baos.toString("UTF-8").replace("\r", "");
  }

  @Test
  public void test() throws Exception {
    Schema schema = Schema.parse(SCHEMA_FILE);

    DataFileWriter<Object> writer =
      new DataFileWriter<Object>(new GenericDatumWriter<Object>());
    writer.create(schema, Util.createFromFS(AVRO_FILE.toString()));
    for (Object datum : new RandomData(schema, COUNT))
      writer.append(datum);
    writer.close();

    run(AVRO_FILE.toString(), TREVNI_FILE.toString());

    AvroColumnReader<Object> reader =
      new AvroColumnReader<Object>(new AvroColumnReader.Params(TREVNI_FILE));
    Iterator<Object> found = reader.iterator();
    for (Object expected : new RandomData(schema, COUNT))
      assertEquals(expected, found.next());
    reader.close();
  }

}