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.carbondata.core.carbon.datastorage.filesystem.store.impl;
  
  import java.io.BufferedWriter;
  import java.io.File;
  import java.io.FileOutputStream;
  import java.io.IOException;
  import java.io.OutputStreamWriter;
  
  import org.apache.carbondata.core.datastore.impl.FileReaderImpl;
  
  import mockit.Mock;
  import mockit.MockUp;
  import org.apache.hadoop.fs.FSDataInputStream;
  import org.apache.hadoop.fs.FileSystem;
  import org.apache.hadoop.fs.Path;
  import org.junit.AfterClass;
  import org.junit.BeforeClass;
  import org.junit.Test;
  
  import static org.hamcrest.CoreMatchers.equalTo;
  import static org.hamcrest.CoreMatchers.is;
  import static org.junit.Assert.assertNull;
  import static org.junit.Assert.assertThat;
  
  public class FileReaderImplUnitTest {
  
    private static FileReaderImpl fileHolder;
    private static FileReaderImpl fileHolderWithCapacity;
    private static String fileName;
    private static String fileNameWithEmptyContent;
    private static File file;
    private static File fileWithEmptyContent;
  
    @BeforeClass public static void setup() {
      fileHolder = new FileReaderImpl();
      fileHolderWithCapacity = new FileReaderImpl(50);
      file = new File("Test.carbondata");
      fileWithEmptyContent = new File("TestEXception.carbondata");
  
      if (!file.exists()) try {
        file.createNewFile();
      } catch (IOException e) {
        e.printStackTrace();
      }
      if (!fileWithEmptyContent.exists()) try {
        fileWithEmptyContent.createNewFile();
      } catch (IOException e) {
        e.printStackTrace();
      }
      try {
        FileOutputStream of = new FileOutputStream(file, true);
        BufferedWriter br = new BufferedWriter(new OutputStreamWriter(of, "UTF-8"));
        br.write("Hello World");
        br.close();
      } catch (Exception e) {
        e.getMessage();
      }
      fileName = file.getAbsolutePath();
      fileNameWithEmptyContent = fileWithEmptyContent.getAbsolutePath();
    }
  
    @AfterClass public static void tearDown() throws IOException {
      file.delete();
      fileWithEmptyContent.delete();
      fileHolder.finish();
    }
  
    @Test public void testReadByteArray() throws IOException  {
      byte[] result = fileHolder.readByteArray(fileName, 1);
      byte[] expected_result = new byte[] { 72 };
      assertThat(result, is(equalTo(expected_result)));
    }
  
    @Test public void testReadByteArrayWithFilePath() throws IOException  {
      byte[] result = fileHolder.readByteArray(fileName, 2L, 2);
      byte[] expected_result = { 108, 108 };
      assertThat(result, is(equalTo(expected_result)));
    }
  
    @Test public void testReadLong() throws IOException  {
      long actualResult = fileHolder.readLong(fileName, 1L);
      long expectedResult = 7308335519855243122L;
      assertThat(actualResult, is(equalTo(expectedResult)));
    }
  
    @Test public void testReadLongForIoException() throws IOException {
      fileHolder.readLong(fileNameWithEmptyContent, 1L);
    }
  
    @Test public void testReadIntForIoException() throws IOException {
      fileHolder.readInt(fileNameWithEmptyContent, 1L);
    }
  
    @Test public void testReadInt() throws IOException  {
      int actualResult = fileHolder.readInt(fileName, 1L);
      int expectedResult = 1701604463;
      assertThat(actualResult, is(equalTo(expectedResult)));
    }
  
    @Test public void testReadIntWithFileName() throws IOException  {
      int actualResult = fileHolder.readInt(fileName);
      int expectedResult = 1701604463;
      assertThat(actualResult, is(equalTo(expectedResult)));
    }
  
    @Test public void testReadIntWithFileNameForIOException() throws IOException  {
      fileHolder.readInt(fileNameWithEmptyContent);
  
    }
  
    @Test public void testDouble() throws IOException  {
      double actualResult = fileHolder.readDouble(fileName, 1L);
      double expectedResult = 7.3083355198552433E18;
      assertThat(actualResult, is(equalTo(expectedResult)));
    }
  
    @Test public void testDoubleForIoException() throws IOException {
      fileHolder.readDouble(fileNameWithEmptyContent, 1L);
  
    }
  
    @Test public void testDoubleForIoExceptionwithUpdateCache() throws Exception {
      new MockUp<FileSystem>() {
        @SuppressWarnings("unused") @Mock public FSDataInputStream open(Path file)
            throws IOException {
          throw new IOException();
        }
  
      };
      try {
        fileHolder.readDouble(fileName, 1L);
      } catch (Exception e) {
        assertNull(e.getMessage());
      }
  
    }
  
  }
  