1 /* 2 * Copyright (C) 2012 The Guava Authors 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package com.google.common.io; 18 19 import static com.google.common.base.Charsets.UTF_8; 20 import static com.google.common.base.Preconditions.checkNotNull; 21 22 import java.io.FilterWriter; 23 import java.io.IOException; 24 import java.io.OutputStreamWriter; 25 26 /** 27 * @author Colin Decker 28 */ 29 public class TestWriter extends FilterWriter { 30 31 private final TestOutputStream out; 32 TestWriter(TestOption... options)33 public TestWriter(TestOption... options) throws IOException { 34 this(new TestOutputStream(ByteStreams.nullOutputStream(), options)); 35 } 36 TestWriter(TestOutputStream out)37 public TestWriter(TestOutputStream out) { 38 super(new OutputStreamWriter(checkNotNull(out), UTF_8)); 39 this.out = out; 40 } 41 42 @Override write(int c)43 public void write(int c) throws IOException { 44 super.write(c); 45 flush(); // flush write to TestOutputStream to get its behavior 46 } 47 48 @Override write(char[] cbuf, int off, int len)49 public void write(char[] cbuf, int off, int len) throws IOException { 50 super.write(cbuf, off, len); 51 flush(); 52 } 53 54 @Override write(String str, int off, int len)55 public void write(String str, int off, int len) throws IOException { 56 super.write(str, off, len); 57 flush(); 58 } 59 closed()60 public boolean closed() { 61 return out.closed(); 62 } 63 } 64