11d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert/* 21d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert * Copyright (C) 2007 The Guava Authors 31d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert * 41d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert * Licensed under the Apache License, Version 2.0 (the "License"); 51d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert * you may not use this file except in compliance with the License. 61d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert * You may obtain a copy of the License at 71d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert * 81d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert * http://www.apache.org/licenses/LICENSE-2.0 91d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert * 101d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert * Unless required by applicable law or agreed to in writing, software 111d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert * distributed under the License is distributed on an "AS IS" BASIS, 121d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 131d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert * See the License for the specific language governing permissions and 141d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert * limitations under the License. 151d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert */ 161d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert 171d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringertpackage com.google.common.io; 181d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert 191d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringertimport java.io.Closeable; 201d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringertimport java.io.Flushable; 211d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringertimport java.io.IOException; 221d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringertimport java.io.Writer; 231d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert 241d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert/** 251d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert * Unit test for {@link AppendableWriter}. 261d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert * 271d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert * @author Alan Green 281d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert */ 291d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringertpublic class AppendableWriterTest extends IoTestCase { 301d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert 311d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert /** Helper class for testing behavior with Flushable and Closeable targets. */ 321d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert private static class SpyAppendable implements Appendable, Flushable, Closeable { 331d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert boolean flushed; 341d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert boolean closed; 351d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert StringBuilder result = new StringBuilder(); 361d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert 371d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert @Override public Appendable append(CharSequence csq) { 381d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert result.append(csq); 391d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert return this; 401d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert } 411d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert 421d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert @Override public Appendable append(char c) { 431d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert result.append(c); 441d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert return this; 451d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert } 461d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert 471d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert @Override public Appendable append(CharSequence csq, int start, int end) { 481d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert result.append(csq, start, end); 491d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert return this; 501d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert } 511d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert 521d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert @Override public void flush() { 531d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert flushed = true; 541d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert } 551d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert 561d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert @Override public void close() { 571d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert closed = true; 581d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert } 591d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert } 601d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert 611d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert public void testWriteMethods() throws IOException { 621d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert StringBuilder builder = new StringBuilder(); 631d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert Writer writer = new AppendableWriter(builder); 641d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert 651d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert writer.write("Hello".toCharArray()); 661d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert writer.write(','); 671d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert writer.write(0xBEEF0020); // only lower 16 bits are important 681d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert writer.write("Wo"); 691d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert writer.write("Whirled".toCharArray(), 3, 2); 701d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert writer.write("Mad! Mad, I say", 2, 2); 711d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert 721d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert assertEquals("Hello, World!", builder.toString()); 731d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert } 741d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert 751d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert public void testAppendMethods() throws IOException { 761d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert StringBuilder builder = new StringBuilder(); 771d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert Writer writer = new AppendableWriter(builder); 781d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert 791d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert writer.append("Hello,"); 801d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert writer.append(' '); 811d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert writer.append("The World Wide Web", 4, 9); 821d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert writer.append("!"); 831d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert 841d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert assertEquals("Hello, World!", builder.toString()); 851d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert } 861d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert 871d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert public void testCloseFlush() throws IOException { 881d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert SpyAppendable spy = new SpyAppendable(); 891d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert Writer writer = new AppendableWriter(spy); 901d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert 911d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert writer.write("Hello"); 921d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert assertFalse(spy.flushed); 931d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert assertFalse(spy.closed); 941d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert 951d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert writer.flush(); 961d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert assertTrue(spy.flushed); 971d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert assertFalse(spy.closed); 981d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert 991d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert writer.close(); 1001d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert assertTrue(spy.flushed); 1011d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert assertTrue(spy.closed); 1021d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert } 1031d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert 1041d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert public void testCloseIsFinal() throws IOException { 1051d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert StringBuilder builder = new StringBuilder(); 1061d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert Writer writer = new AppendableWriter(builder); 1071d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert 1081d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert writer.write("Hi"); 1091d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert writer.close(); 1101d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert 1111d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert try { 1121d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert writer.write(" Greg"); 1131d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert fail("Should have thrown IOException due to writer already closed"); 1141d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert } catch (IOException es) { 1151d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert // expected 1161d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert } 1171d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert 1181d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert try { 1191d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert writer.flush(); 1201d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert fail("Should have thrown IOException due to writer already closed"); 1211d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert } catch (IOException es) { 1221d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert // expected 1231d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert } 1241d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert 1251d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert // close()ing already closed writer is allowed 1261d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert writer.close(); 1271d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert } 1281d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert} 129