1 /* 2 * Licensed to the Apache Software Foundation (ASF) under one or more 3 * contributor license agreements. See the NOTICE file distributed with 4 * this work for additional information regarding copyright ownership. 5 * The ASF licenses this file to You under the Apache License, Version 2.0 6 * (the "License"); you may not use this file except in compliance with 7 * the License. You may obtain a copy of the License at 8 * 9 * http://www.apache.org/licenses/LICENSE-2.0 10 * 11 * Unless required by applicable law or agreed to in writing, software 12 * distributed under the License is distributed on an "AS IS" BASIS, 13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 14 * See the License for the specific language governing permissions and 15 * limitations under the License. 16 */ 17 18 package org.apache.harmony.tests.java.io; 19 20 import java.io.CharArrayReader; 21 import java.io.CharArrayWriter; 22 import java.io.IOException; 23 import java.io.StringWriter; 24 25 public class CharArrayWriterTest extends junit.framework.TestCase { 26 27 char[] hw = { 'H', 'e', 'l', 'l', 'o', 'W', 'o', 'r', 'l', 'd' }; 28 29 CharArrayWriter cw; 30 31 CharArrayReader cr; 32 33 /** 34 * java.io.CharArrayWriter#CharArrayWriter() 35 */ 36 public void test_Constructor() { 37 cw = new CharArrayWriter(90); 38 assertEquals("Created incorrect writer", 0, cw.size()); 39 } 40 41 /** 42 * java.io.CharArrayWriter#CharArrayWriter(int) 43 */ 44 public void test_ConstructorI() { 45 cw = new CharArrayWriter(); 46 assertEquals("Created incorrect writer", 0, cw.size()); 47 } 48 49 /** 50 * java.io.CharArrayWriter#close() 51 */ 52 public void test_close() { 53 cw.close(); 54 } 55 56 /** 57 * java.io.CharArrayWriter#flush() 58 */ 59 public void test_flush() { 60 cw.flush(); 61 } 62 63 /** 64 * java.io.CharArrayWriter#reset() 65 */ 66 public void test_reset() throws IOException { 67 cw.write("HelloWorld", 5, 5); 68 cw.reset(); 69 cw.write("HelloWorld", 0, 5); 70 cr = new CharArrayReader(cw.toCharArray()); 71 char[] c = new char[100]; 72 cr.read(c, 0, 5); 73 assertEquals("Reset failed to reset buffer", "Hello", new String(c, 0, 74 5)); 75 } 76 77 /** 78 * java.io.CharArrayWriter#size() 79 */ 80 public void test_size() { 81 assertEquals("Returned incorrect size", 0, cw.size()); 82 cw.write(hw, 5, 5); 83 assertEquals("Returned incorrect size", 5, cw.size()); 84 } 85 86 /** 87 * java.io.CharArrayWriter#toCharArray() 88 */ 89 public void test_toCharArray() throws IOException { 90 cw.write("HelloWorld", 0, 10); 91 cr = new CharArrayReader(cw.toCharArray()); 92 char[] c = new char[100]; 93 cr.read(c, 0, 10); 94 assertEquals("toCharArray failed to return correct array", 95 "HelloWorld", new String(c, 0, 10)); 96 } 97 98 /** 99 * java.io.CharArrayWriter#toString() 100 */ 101 public void test_toString() { 102 cw.write("HelloWorld", 5, 5); 103 cr = new CharArrayReader(cw.toCharArray()); 104 assertEquals("Returned incorrect string", "World", cw.toString()); 105 } 106 107 /** 108 * java.io.CharArrayWriter#write(char[], int, int) 109 */ 110 public void test_write$CII() throws IOException { 111 cw.write(hw, 5, 5); 112 cr = new CharArrayReader(cw.toCharArray()); 113 char[] c = new char[100]; 114 cr.read(c, 0, 5); 115 assertEquals("Writer failed to write correct chars", "World", 116 new String(c, 0, 5)); 117 } 118 119 /** 120 * java.io.CharArrayWriter#write(char[], int, int) 121 */ 122 public void test_write$CII_2() { 123 // Regression for HARMONY-387 124 CharArrayWriter obj = new CharArrayWriter(); 125 try { 126 obj.write(new char[] { '0' }, 0, -1); 127 fail(); 128 } catch (IndexOutOfBoundsException expected) { 129 } 130 } 131 132 /** 133 * java.io.CharArrayWriter#write(int) 134 */ 135 public void test_writeI() throws IOException { 136 cw.write('T'); 137 cr = new CharArrayReader(cw.toCharArray()); 138 assertEquals("Writer failed to write char", 'T', cr.read()); 139 } 140 141 /** 142 * java.io.CharArrayWriter#write(java.lang.String, int, int) 143 */ 144 public void test_writeLjava_lang_StringII() throws IOException { 145 cw.write("HelloWorld", 5, 5); 146 cr = new CharArrayReader(cw.toCharArray()); 147 char[] c = new char[100]; 148 cr.read(c, 0, 5); 149 assertEquals("Writer failed to write correct chars", "World", 150 new String(c, 0, 5)); 151 } 152 153 /** 154 * java.io.CharArrayWriter#write(java.lang.String, int, int) 155 */ 156 public void test_writeLjava_lang_StringII_2() 157 throws StringIndexOutOfBoundsException { 158 // Regression for HARMONY-387 159 CharArrayWriter obj = new CharArrayWriter(); 160 try { 161 obj.write((String) null, -1, 0); 162 fail("NullPointerException expected"); 163 } catch (NullPointerException t) { 164 // Expected 165 } 166 } 167 168 /** 169 * java.io.CharArrayWriter#writeTo(java.io.Writer) 170 */ 171 public void test_writeToLjava_io_Writer() throws IOException { 172 cw.write("HelloWorld", 0, 10); 173 StringWriter sw = new StringWriter(); 174 cw.writeTo(sw); 175 assertEquals("Writer failed to write correct chars", "HelloWorld", sw 176 .toString()); 177 } 178 179 /** 180 * Sets up the fixture, for example, open a network connection. This method 181 * is called before a test is executed. 182 */ 183 protected void setUp() { 184 cw = new CharArrayWriter(); 185 } 186 187 /** 188 * Tears down the fixture, for example, close a network connection. This 189 * method is called after a test is executed. 190 */ 191 protected void tearDown() { 192 if (cr != null) { 193 cr.close(); 194 } 195 cw.close(); 196 } 197 198 /** 199 * java.io.CharArrayWriter#append(char) 200 */ 201 public void test_appendChar() throws IOException { 202 char testChar = ' '; 203 CharArrayWriter writer = new CharArrayWriter(10); 204 writer.append(testChar); 205 writer.flush(); 206 assertEquals(String.valueOf(testChar), writer.toString()); 207 writer.close(); 208 } 209 210 /** 211 * java.io.CharArrayWriter#append(CharSequence) 212 */ 213 public void test_appendCharSequence() { 214 String testString = "My Test String"; 215 CharArrayWriter writer = new CharArrayWriter(10); 216 writer.append(testString); 217 writer.flush(); 218 assertEquals(testString, writer.toString()); 219 writer.close(); 220 } 221 222 /** 223 * java.io.CharArrayWriter#append(CharSequence, int, int) 224 */ 225 public void test_appendCharSequenceIntInt() { 226 String testString = "My Test String"; 227 CharArrayWriter writer = new CharArrayWriter(10); 228 writer.append(testString, 1, 3); 229 writer.flush(); 230 assertEquals(testString.substring(1, 3), writer.toString()); 231 writer.close(); 232 } 233 } 234
