/**
* 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.hadoop.fs.shell;
import static org.junit.Assert.*;
import java.io.File;
import java.io.FileOutputStream;
import java.io.InputStream;
import java.io.IOException;
import java.io.StringWriter;
import java.lang.reflect.Method;
import java.net.URI;
import java.nio.file.Files;
import org.apache.commons.io.IOUtils;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.fs.Path;
import org.apache.hadoop.test.GenericTestUtils;
import org.junit.Test;
/**
* This class tests the logic for displaying the binary formats supported
* by the Text command.
*/
public class TestTextCommand {
private static final File TEST_ROOT_DIR =
GenericTestUtils.getTestDir("testText");
private static final String AVRO_FILENAME =
new File(TEST_ROOT_DIR, "weather.avro").toURI().getPath();
private static final String TEXT_FILENAME =
new File(TEST_ROOT_DIR, "testtextfile.txt").toURI().getPath();
/**
* Tests whether binary Avro data files are displayed correctly.
*/
@Test (timeout = 30000)
public void testDisplayForAvroFiles() throws Exception {
String expectedOutput =
"{\"station\":\"011990-99999\",\"time\":-619524000000,\"temp\":0}" +
System.getProperty("line.separator") +
"{\"station\":\"011990-99999\",\"time\":-619506000000,\"temp\":22}" +
System.getProperty("line.separator") +
"{\"station\":\"011990-99999\",\"time\":-619484400000,\"temp\":-11}" +
System.getProperty("line.separator") +
"{\"station\":\"012650-99999\",\"time\":-655531200000,\"temp\":111}" +
System.getProperty("line.separator") +
"{\"station\":\"012650-99999\",\"time\":-655509600000,\"temp\":78}" +
System.getProperty("line.separator");
String output = readUsingTextCommand(AVRO_FILENAME,
generateWeatherAvroBinaryData());
assertEquals(expectedOutput, output);
}
/**
* Tests that a zero-length file is displayed correctly.
*/
@Test (timeout = 30000)
public void testEmptyTextFil() throws Exception {
byte[] emptyContents = { };
String output = readUsingTextCommand(TEXT_FILENAME, emptyContents);
assertTrue("".equals(output));
}
/**
* Tests that a one-byte file is displayed correctly.
*/
@Test (timeout = 30000)
public void testOneByteTextFil() throws Exception {
byte[] oneByteContents = { 'x' };
String output = readUsingTextCommand(TEXT_FILENAME, oneByteContents);
assertTrue(new String(oneByteContents).equals(output));
}
/**
* Tests that a one-byte file is displayed correctly.
*/
@Test (timeout = 30000)
public void testTwoByteTextFil() throws Exception {
byte[] twoByteContents = { 'x', 'y' };
String output = readUsingTextCommand(TEXT_FILENAME, twoByteContents);
assertTrue(new String(twoByteContents).equals(output));
}
// Create a file on the local file system and read it using
// the Display.Text class.
private String readUsingTextCommand(String fileName, byte[] fileContents)
throws Exception {
createFile(fileName, fileContents);
// Prepare and call the Text command's protected getInputStream method
// using reflection.
Configuration conf = new Configuration();
URI localPath = new URI(fileName);
PathData pathData = new PathData(localPath, conf);
Display.Text text = new Display.Text() {
@Override
public InputStream getInputStream(PathData item) throws IOException {
return super.getInputStream(item);
}
};
text.setConf(conf);
InputStream stream = (InputStream) text.getInputStream(pathData);
return inputStreamToString(stream);
}
private String inputStreamToString(InputStream stream) throws IOException {
StringWriter writer = new StringWriter();
IOUtils.copy(stream, writer);
return writer.toString();
}
private void createFile(String fileName, byte[] contents) throws IOException {
Files.createDirectories(TEST_ROOT_DIR.toPath());
File file = new File(fileName);
file.createNewFile();
FileOutputStream stream = new FileOutputStream(file);
stream.write(contents);
stream.close();
}
private byte[] generateWeatherAvroBinaryData() {
// The contents of a simple binary Avro file with weather records.
byte[] contents = {
(byte) 0x4f, (byte) 0x62, (byte) 0x6a, (byte) 0x1,
(byte) 0x4, (byte) 0x14, (byte) 0x61, (byte) 0x76,
(byte) 0x72, (byte) 0x6f, (byte) 0x2e, (byte) 0x63,
(byte) 0x6f, (byte) 0x64, (byte) 0x65, (byte) 0x63,
(byte) 0x8, (byte) 0x6e, (byte) 0x75, (byte) 0x6c,
(byte) 0x6c, (byte) 0x16, (byte) 0x61, (byte) 0x76,
(byte) 0x72, (byte) 0x6f, (byte) 0x2e, (byte) 0x73,
(byte) 0x63, (byte) 0x68, (byte) 0x65, (byte) 0x6d,
(byte) 0x61, (byte) 0xf2, (byte) 0x2, (byte) 0x7b,
(byte) 0x22, (byte) 0x74, (byte) 0x79, (byte) 0x70,
(byte) 0x65, (byte) 0x22, (byte) 0x3a, (byte) 0x22,
(byte) 0x72, (byte) 0x65, (byte) 0x63, (byte) 0x6f,
(byte) 0x72, (byte) 0x64, (byte) 0x22, (byte) 0x2c,
(byte) 0x22, (byte) 0x6e, (byte) 0x61, (byte) 0x6d,
(byte) 0x65, (byte) 0x22, (byte) 0x3a, (byte) 0x22,
(byte) 0x57, (byte) 0x65, (byte) 0x61, (byte) 0x74,
(byte) 0x68, (byte) 0x65, (byte) 0x72, (byte) 0x22,
(byte) 0x2c, (byte) 0x22, (byte) 0x6e, (byte) 0x61,
(byte) 0x6d, (byte) 0x65, (byte) 0x73, (byte) 0x70,
(byte) 0x61, (byte) 0x63, (byte) 0x65, (byte) 0x22,
(byte) 0x3a, (byte) 0x22, (byte) 0x74, (byte) 0x65,
(byte) 0x73, (byte) 0x74, (byte) 0x22, (byte) 0x2c,
(byte) 0x22, (byte) 0x66, (byte) 0x69, (byte) 0x65,
(byte) 0x6c, (byte) 0x64, (byte) 0x73, (byte) 0x22,
(byte) 0x3a, (byte) 0x5b, (byte) 0x7b, (byte) 0x22,
(byte) 0x6e, (byte) 0x61, (byte) 0x6d, (byte) 0x65,
(byte) 0x22, (byte) 0x3a, (byte) 0x22, (byte) 0x73,
(byte) 0x74, (byte) 0x61, (byte) 0x74, (byte) 0x69,
(byte) 0x6f, (byte) 0x6e, (byte) 0x22, (byte) 0x2c,
(byte) 0x22, (byte) 0x74, (byte) 0x79, (byte) 0x70,
(byte) 0x65, (byte) 0x22, (byte) 0x3a, (byte) 0x22,
(byte) 0x73, (byte) 0x74, (byte) 0x72, (byte) 0x69,
(byte) 0x6e, (byte) 0x67, (byte) 0x22, (byte) 0x7d,
(byte) 0x2c, (byte) 0x7b, (byte) 0x22, (byte) 0x6e,
(byte) 0x61, (byte) 0x6d, (byte) 0x65, (byte) 0x22,
(byte) 0x3a, (byte) 0x22, (byte) 0x74, (byte) 0x69,
(byte) 0x6d, (byte) 0x65, (byte) 0x22, (byte) 0x2c,
(byte) 0x22, (byte) 0x74, (byte) 0x79, (byte) 0x70,
(byte) 0x65, (byte) 0x22, (byte) 0x3a, (byte) 0x22,
(byte) 0x6c, (byte) 0x6f, (byte) 0x6e, (byte) 0x67,
(byte) 0x22, (byte) 0x7d, (byte) 0x2c, (byte) 0x7b,
(byte) 0x22, (byte) 0x6e, (byte) 0x61, (byte) 0x6d,
(byte) 0x65, (byte) 0x22, (byte) 0x3a, (byte) 0x22,
(byte) 0x74, (byte) 0x65, (byte) 0x6d, (byte) 0x70,
(byte) 0x22, (byte) 0x2c, (byte) 0x22, (byte) 0x74,
(byte) 0x79, (byte) 0x70, (byte) 0x65, (byte) 0x22,
(byte) 0x3a, (byte) 0x22, (byte) 0x69, (byte) 0x6e,
(byte) 0x74, (byte) 0x22, (byte) 0x7d, (byte) 0x5d,
(byte) 0x2c, (byte) 0x22, (byte) 0x64, (byte) 0x6f,
(byte) 0x63, (byte) 0x22, (byte) 0x3a, (byte) 0x22,
(byte) 0x41, (byte) 0x20, (byte) 0x77, (byte) 0x65,
(byte) 0x61, (byte) 0x74, (byte) 0x68, (byte) 0x65,
(byte) 0x72, (byte) 0x20, (byte) 0x72, (byte) 0x65,
(byte) 0x61, (byte) 0x64, (byte) 0x69, (byte) 0x6e,
(byte) 0x67, (byte) 0x2e, (byte) 0x22, (byte) 0x7d,
(byte) 0x0, (byte) 0xb0, (byte) 0x81, (byte) 0xb3,
(byte) 0xc4, (byte) 0xa, (byte) 0xc, (byte) 0xf6,
(byte) 0x62, (byte) 0xfa, (byte) 0xc9, (byte) 0x38,
(byte) 0xfd, (byte) 0x7e, (byte) 0x52, (byte) 0x0,
(byte) 0xa7, (byte) 0xa, (byte) 0xcc, (byte) 0x1,
(byte) 0x18, (byte) 0x30, (byte) 0x31, (byte) 0x31,
(byte) 0x39, (byte) 0x39, (byte) 0x30, (byte) 0x2d,
(byte) 0x39, (byte) 0x39, (byte) 0x39, (byte) 0x39,
(byte) 0x39, (byte) 0xff, (byte) 0xa3, (byte) 0x90,
(byte) 0xe8, (byte) 0x87, (byte) 0x24, (byte) 0x0,
(byte) 0x18, (byte) 0x30, (byte) 0x31, (byte) 0x31,
(byte) 0x39, (byte) 0x39, (byte) 0x30, (byte) 0x2d,
(byte) 0x39, (byte) 0x39, (byte) 0x39, (byte) 0x39,
(byte) 0x39, (byte) 0xff, (byte) 0x81, (byte) 0xfb,
(byte) 0xd6, (byte) 0x87, (byte) 0x24, (byte) 0x2c,
(byte) 0x18, (byte) 0x30, (byte) 0x31, (byte) 0x31,
(byte) 0x39, (byte) 0x39, (byte) 0x30, (byte) 0x2d,
(byte) 0x39, (byte) 0x39, (byte) 0x39, (byte) 0x39,
(byte) 0x39, (byte) 0xff, (byte) 0xa5, (byte) 0xae,
(byte) 0xc2, (byte) 0x87, (byte) 0x24, (byte) 0x15,
(byte) 0x18, (byte) 0x30, (byte) 0x31, (byte) 0x32,
(byte) 0x36, (byte) 0x35, (byte) 0x30, (byte) 0x2d,
(byte) 0x39, (byte) 0x39, (byte) 0x39, (byte) 0x39,
(byte) 0x39, (byte) 0xff, (byte) 0xb7, (byte) 0xa2,
(byte) 0x8b, (byte) 0x94, (byte) 0x26, (byte) 0xde,
(byte) 0x1, (byte) 0x18, (byte) 0x30, (byte) 0x31,
(byte) 0x32, (byte) 0x36, (byte) 0x35, (byte) 0x30,
(byte) 0x2d, (byte) 0x39, (byte) 0x39, (byte) 0x39,
(byte) 0x39, (byte) 0x39, (byte) 0xff, (byte) 0xdb,
(byte) 0xd5, (byte) 0xf6, (byte) 0x93, (byte) 0x26,
(byte) 0x9c, (byte) 0x1, (byte) 0xb0, (byte) 0x81,
(byte) 0xb3, (byte) 0xc4, (byte) 0xa, (byte) 0xc,
(byte) 0xf6, (byte) 0x62, (byte) 0xfa, (byte) 0xc9,
(byte) 0x38, (byte) 0xfd, (byte) 0x7e, (byte) 0x52,
(byte) 0x0, (byte) 0xa7,
};
return contents;
}
}