[120] | 1 | /** |
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| 2 | * Licensed to the Apache Software Foundation (ASF) under one |
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| 3 | * or more contributor license agreements. See the NOTICE file |
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| 4 | * distributed with this work for additional information |
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| 5 | * regarding copyright ownership. The ASF licenses this file |
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| 6 | * to you under the Apache License, Version 2.0 (the |
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| 7 | * "License"); you may not use this file except in compliance |
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| 8 | * with the License. You may obtain a copy of the License at |
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| 9 | * |
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| 10 | * http://www.apache.org/licenses/LICENSE-2.0 |
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| 11 | * |
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| 12 | * Unless required by applicable law or agreed to in writing, software |
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| 13 | * distributed under the License is distributed on an "AS IS" BASIS, |
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| 14 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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| 15 | * See the License for the specific language governing permissions and |
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| 16 | * limitations under the License. |
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| 17 | */ |
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| 18 | |
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| 19 | package org.apache.hadoop.io; |
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| 20 | |
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| 21 | import junit.framework.TestCase; |
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| 22 | import java.util.Random; |
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| 23 | |
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| 24 | /** Unit tests for UTF8. */ |
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| 25 | public class TestUTF8 extends TestCase { |
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| 26 | public TestUTF8(String name) { super(name); } |
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| 27 | |
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| 28 | private static final Random RANDOM = new Random(); |
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| 29 | |
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| 30 | public static String getTestString() throws Exception { |
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| 31 | StringBuffer buffer = new StringBuffer(); |
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| 32 | int length = RANDOM.nextInt(100); |
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| 33 | for (int i = 0; i < length; i++) { |
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| 34 | buffer.append((char)(RANDOM.nextInt(Character.MAX_VALUE))); |
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| 35 | } |
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| 36 | return buffer.toString(); |
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| 37 | } |
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| 38 | |
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| 39 | public void testWritable() throws Exception { |
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| 40 | for (int i = 0; i < 10; i++) { |
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| 41 | TestWritable.testWritable(new UTF8(getTestString())); |
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| 42 | } |
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| 43 | } |
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| 44 | |
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| 45 | public void testGetBytes() throws Exception { |
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| 46 | for (int i = 0; i < 10; i++) { |
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| 47 | |
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| 48 | // generate a random string |
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| 49 | String before = getTestString(); |
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| 50 | |
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| 51 | // check its utf8 |
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| 52 | assertEquals(before, new String(UTF8.getBytes(before), "UTF-8")); |
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| 53 | } |
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| 54 | } |
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| 55 | |
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| 56 | public void testIO() throws Exception { |
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| 57 | DataOutputBuffer out = new DataOutputBuffer(); |
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| 58 | DataInputBuffer in = new DataInputBuffer(); |
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| 59 | |
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| 60 | for (int i = 0; i < 10; i++) { |
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| 61 | // generate a random string |
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| 62 | String before = getTestString(); |
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| 63 | |
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| 64 | // write it |
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| 65 | out.reset(); |
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| 66 | UTF8.writeString(out, before); |
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| 67 | |
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| 68 | // test that it reads correctly |
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| 69 | in.reset(out.getData(), out.getLength()); |
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| 70 | String after = UTF8.readString(in); |
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| 71 | assertTrue(before.equals(after)); |
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| 72 | |
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| 73 | // test that it reads correctly with DataInput |
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| 74 | in.reset(out.getData(), out.getLength()); |
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| 75 | String after2 = in.readUTF(); |
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| 76 | assertTrue(before.equals(after2)); |
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| 77 | |
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| 78 | // test that it is compatible with Java's other decoder |
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| 79 | String after3 = new String(out.getData(), 2, out.getLength()-2, "UTF-8"); |
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| 80 | assertTrue(before.equals(after3)); |
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| 81 | |
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| 82 | } |
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| 83 | |
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| 84 | } |
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| 85 | |
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| 86 | } |
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