Java tutorial
/**************************************************************** * Licensed to the AOS Community (AOS) under one or more * * contributor license agreements. See the NOTICE file * * distributed with this work for additional information * * regarding copyright ownership. The AOS 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 io.aos.hdfs; // == MapWritableTest import static org.hamcrest.Matchers.is; import static org.junit.Assert.assertThat; import java.io.IOException; import org.apache.hadoop.io.*; import org.junit.Test; public class MapWritableTest extends WritableTestBase { @Test public void mapWritable() throws IOException { // vv MapWritableTest MapWritable src = new MapWritable(); src.put(new IntWritable(1), new Text("cat")); src.put(new VIntWritable(2), new LongWritable(163)); MapWritable dest = new MapWritable(); WritableUtils.cloneInto(dest, src); assertThat((Text) dest.get(new IntWritable(1)), is(new Text("cat"))); assertThat((LongWritable) dest.get(new VIntWritable(2)), is(new LongWritable(163))); // ^^ MapWritableTest } @Test public void setWritableEmulation() throws IOException { MapWritable src = new MapWritable(); src.put(new IntWritable(1), NullWritable.get()); src.put(new IntWritable(2), NullWritable.get()); MapWritable dest = new MapWritable(); WritableUtils.cloneInto(dest, src); assertThat(dest.containsKey(new IntWritable(1)), is(true)); } }