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.tool;
  
  import java.io.ByteArrayInputStream;
  import java.io.ByteArrayOutputStream;
  import java.io.File;
  import java.io.PrintStream;
  import java.nio.file.Path;
  import java.util.ArrayList;
  import java.util.Arrays;
  import java.util.Collections;
  import java.util.List;
  import java.util.Iterator;
  
  import org.apache.avro.Schema;
  import org.apache.avro.file.DataFileReader;
  import org.apache.avro.file.DataFileStream;
  import org.apache.avro.generic.GenericDatumReader;
  import org.apache.avro.util.RandomData;
  import org.apache.trevni.TestUtil;
  
  import org.junit.jupiter.api.AfterEach;
  import org.junit.jupiter.api.BeforeEach;
  import org.junit.jupiter.api.Test;
  import org.junit.jupiter.api.io.TempDir;
  
  import static org.junit.jupiter.api.Assertions.assertEquals;
  import static org.junit.jupiter.api.Assertions.assertTrue;
  
  public class TestCreateRandomFileTool {
    private static final String COUNT = System.getProperty("test.count", "200");
  
    @TempDir
    private Path dataDir;
    private static final File SCHEMA_FILE = new File("../../../share/test/schemas/weather.avsc");
  
    private final Schema.Parser schemaParser = new Schema.Parser();
  
    private static final long SEED = System.currentTimeMillis();
  
    private ByteArrayOutputStream out;
    private ByteArrayOutputStream err;
  
    @BeforeEach
    public void before() {
      out = new ByteArrayOutputStream();
      err = new ByteArrayOutputStream();
    }
  
    @AfterEach
    public void after() throws Exception {
      out.close();
      err.close();
    }
  
    private int run(List<String> args) throws Exception {
      PrintStream output = new PrintStream(out);
      PrintStream saveOut = System.out;
      PrintStream error = new PrintStream(err);
      PrintStream saveErr = System.err;
      try {
        System.setOut(output);
        System.setErr(error);
        return new CreateRandomFileTool().run(null, output, error, args);
      } finally {
        System.setOut(saveOut);
        System.setErr(saveErr);
      }
    }
  
    private void check(String... extraArgs) throws Exception {
      ArrayList<String> args = new ArrayList<>();
      File outFile = dataDir.resolve("random.avro").toFile();
      args.addAll(Arrays.asList(outFile.toString(), "--count", COUNT, "--schema-file", SCHEMA_FILE.toString(), "--seed",
          Long.toString(SEED)));
      args.addAll(Arrays.asList(extraArgs));
      run(args);
  
      DataFileReader<Object> reader = new DataFileReader<>(outFile, new GenericDatumReader<>());
  
      Iterator<Object> found = reader.iterator();
      for (Object expected : new RandomData(schemaParser.parse(SCHEMA_FILE), Integer.parseInt(COUNT), SEED))
        assertEquals(expected, found.next());
  
      reader.close();
    }
  
    private void checkMissingCount(String... extraArgs) throws Exception {
      ArrayList<String> args = new ArrayList<>();
      File outFile = dataDir.resolve("random.avro").toFile();
      args.addAll(
          Arrays.asList(outFile.toString(), "--schema-file", SCHEMA_FILE.toString(), "--seed", Long.toString(SEED)));
      args.addAll(Arrays.asList(extraArgs));
      run(args);
      assertTrue(err.toString().contains("Need count (--count)"));
    }
  
    @Test
    void simple() throws Exception {
      check();
    }
  
    @Test
    void codec() throws Exception {
      check("--codec", "snappy");
    }
  
    @Test
    void missingCountParameter() throws Exception {
      checkMissingCount();
    }
  
    @Test
    void stdOut() throws Exception {
      TestUtil.resetRandomSeed();
      run(Arrays.asList("-", "--count", COUNT, "--schema-file", SCHEMA_FILE.toString(), "--seed", Long.toString(SEED)));
  
      byte[] file = out.toByteArray();
  
      DataFileStream<Object> reader = new DataFileStream<>(new ByteArrayInputStream(file), new GenericDatumReader<>());
  
      Iterator<Object> found = reader.iterator();
      for (Object expected : new RandomData(schemaParser.parse(SCHEMA_FILE), Integer.parseInt(COUNT), SEED))
        assertEquals(expected, found.next());
  
      reader.close();
    }
  
    @Test
    void defaultCodec() throws Exception {
      // The default codec for random is deflate
      run(Collections.emptyList());
      assertTrue(err.toString().contains("Compression codec (default: deflate)"));
    }
  }
  