| /* |
| * Copyright (c) 2001, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| /* @test |
| @bug 4401798 |
| @summary Check that single-character reads work properly |
| */ |
| |
| |
| import java.io.*; |
| |
| |
| public class One { |
| |
| private abstract static class Test { |
| |
| InputStreamReader isr; |
| StringBuffer sb; |
| String expect; |
| |
| Test(byte[] in, String expect) throws Exception { |
| isr = new InputStreamReader(new ByteArrayInputStream(in), "UTF-8"); |
| sb = new StringBuffer(expect.length()); |
| this.expect = expect; |
| go(); |
| } |
| |
| void go() throws Exception { |
| read(); |
| if (!expect.equals(sb.toString())) |
| throw new Exception("Expected " + expect |
| + ", got " + sb.toString()); |
| } |
| |
| abstract void read() throws IOException; |
| |
| } |
| |
| |
| private static void test(String expect) throws Exception { |
| byte[] in = expect.getBytes("UTF-8"); |
| |
| new Test(in, expect) { |
| public void read() throws IOException { |
| for (;;) { |
| int c; |
| if ((c = isr.read()) == -1) |
| break; |
| sb.append((char)c); |
| } |
| }}; |
| |
| new Test(in, expect) { |
| public void read() throws IOException { |
| for (;;) { |
| char[] cb = new char[1]; |
| if (isr.read(cb) == -1) |
| break; |
| sb.append(cb[0]); |
| } |
| }}; |
| |
| new Test(in, expect) { |
| public void read() throws IOException { |
| for (;;) { |
| char[] cb = new char[2]; |
| int n; |
| if ((n = isr.read(cb)) == -1) |
| break; |
| sb.append(cb[0]); |
| if (n == 2) |
| sb.append(cb[1]); |
| } |
| }}; |
| |
| } |
| |
| public static void main(String[] args) throws Exception { |
| test("x"); |
| test("xy"); |
| test("xyz"); |
| test("\ud800\udc00"); |
| test("x\ud800\udc00"); |
| } |
| |
| } |