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.util; |
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20 | |
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21 | import junit.framework.TestCase; |
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22 | |
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23 | public class TestStringUtils extends TestCase { |
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24 | final private static String NULL_STR = null; |
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25 | final private static String EMPTY_STR = ""; |
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26 | final private static String STR_WO_SPECIAL_CHARS = "AB"; |
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27 | final private static String STR_WITH_COMMA = "A,B"; |
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28 | final private static String ESCAPED_STR_WITH_COMMA = "A\\,B"; |
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29 | final private static String STR_WITH_ESCAPE = "AB\\"; |
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30 | final private static String ESCAPED_STR_WITH_ESCAPE = "AB\\\\"; |
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31 | final private static String STR_WITH_BOTH2 = ",A\\,,B\\\\,"; |
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32 | final private static String ESCAPED_STR_WITH_BOTH2 = |
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33 | "\\,A\\\\\\,\\,B\\\\\\\\\\,"; |
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34 | |
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35 | public void testEscapeString() throws Exception { |
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36 | assertEquals(NULL_STR, StringUtils.escapeString(NULL_STR)); |
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37 | assertEquals(EMPTY_STR, StringUtils.escapeString(EMPTY_STR)); |
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38 | assertEquals(STR_WO_SPECIAL_CHARS, |
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39 | StringUtils.escapeString(STR_WO_SPECIAL_CHARS)); |
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40 | assertEquals(ESCAPED_STR_WITH_COMMA, |
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41 | StringUtils.escapeString(STR_WITH_COMMA)); |
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42 | assertEquals(ESCAPED_STR_WITH_ESCAPE, |
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43 | StringUtils.escapeString(STR_WITH_ESCAPE)); |
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44 | assertEquals(ESCAPED_STR_WITH_BOTH2, |
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45 | StringUtils.escapeString(STR_WITH_BOTH2)); |
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46 | } |
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47 | |
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48 | public void testSplit() throws Exception { |
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49 | assertEquals(NULL_STR, StringUtils.split(NULL_STR)); |
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50 | String[] splits = StringUtils.split(EMPTY_STR); |
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51 | assertEquals(0, splits.length); |
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52 | splits = StringUtils.split(",,"); |
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53 | assertEquals(0, splits.length); |
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54 | splits = StringUtils.split(STR_WO_SPECIAL_CHARS); |
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55 | assertEquals(1, splits.length); |
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56 | assertEquals(STR_WO_SPECIAL_CHARS, splits[0]); |
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57 | splits = StringUtils.split(STR_WITH_COMMA); |
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58 | assertEquals(2, splits.length); |
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59 | assertEquals("A", splits[0]); |
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60 | assertEquals("B", splits[1]); |
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61 | splits = StringUtils.split(ESCAPED_STR_WITH_COMMA); |
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62 | assertEquals(1, splits.length); |
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63 | assertEquals(ESCAPED_STR_WITH_COMMA, splits[0]); |
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64 | splits = StringUtils.split(STR_WITH_ESCAPE); |
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65 | assertEquals(1, splits.length); |
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66 | assertEquals(STR_WITH_ESCAPE, splits[0]); |
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67 | splits = StringUtils.split(STR_WITH_BOTH2); |
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68 | assertEquals(3, splits.length); |
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69 | assertEquals(EMPTY_STR, splits[0]); |
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70 | assertEquals("A\\,", splits[1]); |
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71 | assertEquals("B\\\\", splits[2]); |
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72 | splits = StringUtils.split(ESCAPED_STR_WITH_BOTH2); |
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73 | assertEquals(1, splits.length); |
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74 | assertEquals(ESCAPED_STR_WITH_BOTH2, splits[0]); |
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75 | } |
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76 | |
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77 | public void testUnescapeString() throws Exception { |
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78 | assertEquals(NULL_STR, StringUtils.unEscapeString(NULL_STR)); |
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79 | assertEquals(EMPTY_STR, StringUtils.unEscapeString(EMPTY_STR)); |
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80 | assertEquals(STR_WO_SPECIAL_CHARS, |
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81 | StringUtils.unEscapeString(STR_WO_SPECIAL_CHARS)); |
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82 | try { |
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83 | StringUtils.unEscapeString(STR_WITH_COMMA); |
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84 | fail("Should throw IllegalArgumentException"); |
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85 | } catch (IllegalArgumentException e) { |
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86 | // expected |
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87 | } |
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88 | assertEquals(STR_WITH_COMMA, |
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89 | StringUtils.unEscapeString(ESCAPED_STR_WITH_COMMA)); |
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90 | try { |
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91 | StringUtils.unEscapeString(STR_WITH_ESCAPE); |
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92 | fail("Should throw IllegalArgumentException"); |
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93 | } catch (IllegalArgumentException e) { |
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94 | // expected |
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95 | } |
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96 | assertEquals(STR_WITH_ESCAPE, |
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97 | StringUtils.unEscapeString(ESCAPED_STR_WITH_ESCAPE)); |
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98 | try { |
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99 | StringUtils.unEscapeString(STR_WITH_BOTH2); |
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100 | fail("Should throw IllegalArgumentException"); |
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101 | } catch (IllegalArgumentException e) { |
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102 | // expected |
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103 | } |
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104 | assertEquals(STR_WITH_BOTH2, |
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105 | StringUtils.unEscapeString(ESCAPED_STR_WITH_BOTH2)); |
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106 | } |
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107 | |
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108 | public void testTraditionalBinaryPrefix() throws Exception { |
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109 | String[] symbol = {"k", "m", "g", "t", "p", "e"}; |
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110 | long m = 1024; |
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111 | for(String s : symbol) { |
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112 | assertEquals(0, StringUtils.TraditionalBinaryPrefix.string2long(0 + s)); |
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113 | assertEquals(m, StringUtils.TraditionalBinaryPrefix.string2long(1 + s)); |
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114 | m *= 1024; |
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115 | } |
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116 | |
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117 | assertEquals(0L, StringUtils.TraditionalBinaryPrefix.string2long("0")); |
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118 | assertEquals(-1259520L, StringUtils.TraditionalBinaryPrefix.string2long("-1230k")); |
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119 | assertEquals(956703965184L, StringUtils.TraditionalBinaryPrefix.string2long("891g")); |
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120 | } |
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121 | } |
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