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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
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   * implied.  See the License for the specific language governing
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  package org.apache.avro.mapred;
  
  import org.apache.hadoop.fs.FileStatus;
  import org.apache.hadoop.fs.FileSystem;
  import org.apache.hadoop.fs.Path;
  import org.apache.hadoop.mapred.FileInputFormat;
  import org.apache.hadoop.mapred.JobConf;
  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 java.util.HashSet;
  import java.util.Set;
  
  import static org.junit.jupiter.api.Assertions.assertEquals;
  import static org.junit.jupiter.api.Assertions.assertTrue;
  
  import java.io.File;
  
  public class TestAvroInputFormat {
  
    @TempDir
    public File DIR;
  
    private JobConf conf;
    private FileSystem fs;
    private Path inputDir;
  
    @BeforeEach
    public void setUp() throws Exception {
      conf = new JobConf();
      fs = FileSystem.getLocal(conf);
      inputDir = new Path(DIR.getPath());
    }
  
    @AfterEach
    public void tearDown() throws Exception {
      fs.delete(inputDir, true);
    }
  
    @SuppressWarnings("rawtypes")
    @Test
    void ignoreFilesWithoutExtension() throws Exception {
      fs.mkdirs(inputDir);
      Path avroFile = new Path(inputDir, "somefile.avro");
      Path textFile = new Path(inputDir, "someotherfile.txt");
      fs.create(avroFile).close();
      fs.create(textFile).close();
  
      FileInputFormat.setInputPaths(conf, inputDir);
  
      AvroInputFormat inputFormat = new AvroInputFormat();
      FileStatus[] statuses = inputFormat.listStatus(conf);
      assertEquals(1, statuses.length);
      assertEquals("somefile.avro", statuses[0].getPath().getName());
  
      conf.setBoolean(AvroInputFormat.IGNORE_FILES_WITHOUT_EXTENSION_KEY, false);
      statuses = inputFormat.listStatus(conf);
      assertEquals(2, statuses.length);
      Set<String> names = new HashSet<>();
      names.add(statuses[0].getPath().getName());
      names.add(statuses[1].getPath().getName());
      assertTrue(names.contains("somefile.avro"));
      assertTrue(names.contains("someotherfile.txt"));
    }
  }
  