|
1 /* |
|
2 * Copyright (c) 2001, Oracle and/or its affiliates. All rights reserved. |
|
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
|
4 * |
|
5 * This code is free software; you can redistribute it and/or modify it |
|
6 * under the terms of the GNU General Public License version 2 only, as |
|
7 * published by the Free Software Foundation. |
|
8 * |
|
9 * This code is distributed in the hope that it will be useful, but WITHOUT |
|
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
|
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
|
12 * version 2 for more details (a copy is included in the LICENSE file that |
|
13 * accompanied this code). |
|
14 * |
|
15 * You should have received a copy of the GNU General Public License version |
|
16 * 2 along with this work; if not, write to the Free Software Foundation, |
|
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
|
18 * |
|
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
|
20 * or visit www.oracle.com if you need additional information or have any |
|
21 * questions. |
|
22 */ |
|
23 |
|
24 /* @test |
|
25 @bug 4401798 |
|
26 @summary Check that single-character reads work properly |
|
27 */ |
|
28 |
|
29 |
|
30 import java.io.*; |
|
31 |
|
32 |
|
33 public class One { |
|
34 |
|
35 private abstract static class Test { |
|
36 |
|
37 InputStreamReader isr; |
|
38 StringBuffer sb; |
|
39 String expect; |
|
40 |
|
41 Test(byte[] in, String expect) throws Exception { |
|
42 isr = new InputStreamReader(new ByteArrayInputStream(in), "UTF-8"); |
|
43 sb = new StringBuffer(expect.length()); |
|
44 this.expect = expect; |
|
45 go(); |
|
46 } |
|
47 |
|
48 void go() throws Exception { |
|
49 read(); |
|
50 if (!expect.equals(sb.toString())) |
|
51 throw new Exception("Expected " + expect |
|
52 + ", got " + sb.toString()); |
|
53 } |
|
54 |
|
55 abstract void read() throws IOException; |
|
56 |
|
57 } |
|
58 |
|
59 |
|
60 private static void test(String expect) throws Exception { |
|
61 byte[] in = expect.getBytes("UTF-8"); |
|
62 |
|
63 new Test(in, expect) { |
|
64 public void read() throws IOException { |
|
65 for (;;) { |
|
66 int c; |
|
67 if ((c = isr.read()) == -1) |
|
68 break; |
|
69 sb.append((char)c); |
|
70 } |
|
71 }}; |
|
72 |
|
73 new Test(in, expect) { |
|
74 public void read() throws IOException { |
|
75 for (;;) { |
|
76 char[] cb = new char[1]; |
|
77 if (isr.read(cb) == -1) |
|
78 break; |
|
79 sb.append(cb[0]); |
|
80 } |
|
81 }}; |
|
82 |
|
83 new Test(in, expect) { |
|
84 public void read() throws IOException { |
|
85 for (;;) { |
|
86 char[] cb = new char[2]; |
|
87 int n; |
|
88 if ((n = isr.read(cb)) == -1) |
|
89 break; |
|
90 sb.append(cb[0]); |
|
91 if (n == 2) |
|
92 sb.append(cb[1]); |
|
93 } |
|
94 }}; |
|
95 |
|
96 } |
|
97 |
|
98 public static void main(String[] args) throws Exception { |
|
99 test("x"); |
|
100 test("xy"); |
|
101 test("xyz"); |
|
102 test("\ud800\udc00"); |
|
103 test("x\ud800\udc00"); |
|
104 } |
|
105 |
|
106 } |