| /** |
| * 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.io; |
| |
| import java.io.DataInput; |
| import java.io.DataOutput; |
| import java.io.IOException; |
| import java.util.Random; |
| |
| import org.apache.hadoop.conf.Configuration; |
| |
| import junit.framework.TestCase; |
| |
| /** Unit tests for WritableName. */ |
| public class TestWritableName extends TestCase { |
| public TestWritableName(String name) { |
| super(name); |
| } |
| |
| /** Example class used in test cases below. */ |
| public static class SimpleWritable implements Writable { |
| private static final Random RANDOM = new Random(); |
| |
| int state = RANDOM.nextInt(); |
| |
| @Override |
| public void write(DataOutput out) throws IOException { |
| out.writeInt(state); |
| } |
| |
| @Override |
| public void readFields(DataInput in) throws IOException { |
| this.state = in.readInt(); |
| } |
| |
| public static SimpleWritable read(DataInput in) throws IOException { |
| SimpleWritable result = new SimpleWritable(); |
| result.readFields(in); |
| return result; |
| } |
| |
| /** Required by test code, below. */ |
| @Override |
| public boolean equals(Object o) { |
| if (!(o instanceof SimpleWritable)) |
| return false; |
| SimpleWritable other = (SimpleWritable)o; |
| return this.state == other.state; |
| } |
| } |
| |
| private static final String testName = "mystring"; |
| |
| public void testGoodName() throws Exception { |
| Configuration conf = new Configuration(); |
| Class<?> test = WritableName.getClass("long",conf); |
| assertTrue(test != null); |
| } |
| |
| public void testSetName() throws Exception { |
| Configuration conf = new Configuration(); |
| WritableName.setName(SimpleWritable.class, testName); |
| |
| Class<?> test = WritableName.getClass(testName,conf); |
| assertTrue(test.equals(SimpleWritable.class)); |
| } |
| |
| |
| public void testAddName() throws Exception { |
| Configuration conf = new Configuration(); |
| String altName = testName + ".alt"; |
| |
| WritableName.setName(SimpleWritable.class, testName); |
| WritableName.addName(SimpleWritable.class, altName); |
| |
| Class<?> test = WritableName.getClass(altName, conf); |
| assertTrue(test.equals(SimpleWritable.class)); |
| |
| // check original name still works |
| test = WritableName.getClass(testName, conf); |
| assertTrue(test.equals(SimpleWritable.class)); |
| |
| } |
| |
| public void testBadName() throws Exception { |
| Configuration conf = new Configuration(); |
| try { |
| WritableName.getClass("unknown_junk",conf); |
| assertTrue(false); |
| } catch(IOException e) { |
| assertTrue(e.getMessage().matches(".*unknown_junk.*")); |
| } |
| } |
| |
| } |