| /** |
| * 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.*; |
| |
| import junit.framework.TestCase; |
| |
| /** Unit tests for ArrayWritable */ |
| public class TestArrayWritable extends TestCase { |
| |
| static class TextArrayWritable extends ArrayWritable { |
| public TextArrayWritable() { |
| super(Text.class); |
| } |
| } |
| |
| public TestArrayWritable(String name) { |
| super(name); |
| } |
| |
| /** |
| * If valueClass is undefined, readFields should throw an exception indicating |
| * that the field is null. Otherwise, readFields should succeed. |
| */ |
| public void testThrowUndefinedValueException() throws IOException { |
| // Get a buffer containing a simple text array |
| Text[] elements = {new Text("zero"), new Text("one"), new Text("two")}; |
| TextArrayWritable sourceArray = new TextArrayWritable(); |
| sourceArray.set(elements); |
| |
| // Write it to a normal output buffer |
| DataOutputBuffer out = new DataOutputBuffer(); |
| DataInputBuffer in = new DataInputBuffer(); |
| sourceArray.write(out); |
| |
| // Read the output buffer with TextReadable. Since the valueClass is defined, |
| // this should succeed |
| TextArrayWritable destArray = new TextArrayWritable(); |
| in.reset(out.getData(), out.getLength()); |
| destArray.readFields(in); |
| Writable[] destElements = destArray.get(); |
| assertTrue(destElements.length == elements.length); |
| for (int i = 0; i < elements.length; i++) { |
| assertEquals(destElements[i],elements[i]); |
| } |
| } |
| } |