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
   *
   *    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.arrow.tools;
  
  import static org.apache.arrow.tools.ArrowFileTestFixtures.validateOutput;
  import static org.apache.arrow.tools.ArrowFileTestFixtures.writeInput;
  import static org.junit.jupiter.api.Assertions.assertEquals;
  import static org.junit.jupiter.api.Assertions.assertThrows;
  import static org.junit.jupiter.api.Assertions.assertTrue;
  
  import java.io.File;
  import java.io.FileOutputStream;
  import org.apache.arrow.memory.BufferAllocator;
  import org.apache.arrow.memory.RootAllocator;
  import org.apache.arrow.vector.ipc.InvalidArrowFileException;
  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;
  
  public class TestFileRoundtrip {
  
    @TempDir public File testFolder;
    @TempDir public File testAnotherFolder;
  
    private BufferAllocator allocator;
  
    @BeforeEach
    public void init() {
      allocator = new RootAllocator(Integer.MAX_VALUE);
    }
  
    @AfterEach
    public void tearDown() {
      allocator.close();
    }
  
    @Test
    public void test() throws Exception {
      File testInFile = new File(testFolder, "testIn.arrow");
      File testOutFile = new File(testFolder, "testOut.arrow");
  
      writeInput(testInFile, allocator);
  
      String[] args = {"-i", testInFile.getAbsolutePath(), "-o", testOutFile.getAbsolutePath()};
      int result = new FileRoundtrip(System.err).run(args);
      assertEquals(0, result);
  
      validateOutput(testOutFile, allocator);
    }
  
    @Test
    public void testDiffFolder() throws Exception {
      File testInFile = new File(testFolder, "testIn.arrow");
      File testOutFile = new File(testAnotherFolder, "testOut.arrow");
  
      writeInput(testInFile, allocator);
  
      String[] args = {"-i", testInFile.getAbsolutePath(), "-o", testOutFile.getAbsolutePath()};
      int result = new FileRoundtrip(System.err).run(args);
      assertEquals(0, result);
  
      validateOutput(testOutFile, allocator);
    }
  
    @Test
    public void testNotFoundInput() {
      File testInFile = new File(testFolder, "testIn.arrow");
      File testOutFile = new File(testFolder, "testOut.arrow");
  
      String[] args = {"-i", testInFile.getAbsolutePath(), "-o", testOutFile.getAbsolutePath()};
      Exception exception =
          assertThrows(
              IllegalArgumentException.class,
              () -> {
                new FileRoundtrip(System.err).run(args);
              });
  
      assertTrue(exception.getMessage().contains("input file not found"));
    }
  
    @Test
    public void testSmallSizeInput() throws Exception {
      File testInFile = new File(testFolder, "testIn.arrow");
      File testOutFile = new File(testFolder, "testOut.arrow");
  
      // create an empty file
      new FileOutputStream(testInFile).close();
  
      String[] args = {"-i", testInFile.getAbsolutePath(), "-o", testOutFile.getAbsolutePath()};
      Exception exception =
          assertThrows(
              InvalidArrowFileException.class,
              () -> {
                new FileRoundtrip(System.err).run(args);
              });
  
      assertEquals("file too small: 0", exception.getMessage());
    }
  }
  