1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
|
/*
* Copyright (c) 2021, 2022, 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 4926314 8287003
* @summary Test for InputStreamReader#read(CharBuffer).
* @run testng ReadCharBuffer
*/
import org.testng.annotations.DataProvider;
import org.testng.annotations.Test;
import java.io.ByteArrayInputStream;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.Reader;
import java.nio.ByteBuffer;
import java.nio.CharBuffer;
import java.nio.charset.CodingErrorAction;
import java.util.Arrays;
import static java.nio.charset.StandardCharsets.US_ASCII;
import static java.nio.charset.StandardCharsets.UTF_8;
import static org.testng.Assert.assertEquals;
public class ReadCharBuffer {
private static final int BUFFER_SIZE = 24;
@DataProvider(name = "buffers")
public Object[][] createBuffers() {
// test both on-heap and off-heap buffers as they make use different code paths
return new Object[][]{
new Object[]{CharBuffer.allocate(BUFFER_SIZE)},
new Object[]{ByteBuffer.allocateDirect(BUFFER_SIZE * 2).asCharBuffer()}
};
}
private void fillBuffer(CharBuffer buffer) {
char[] filler = new char[BUFFER_SIZE];
Arrays.fill(filler, 'x');
buffer.put(filler);
buffer.clear();
}
@Test(dataProvider = "buffers")
public void read(CharBuffer buffer) throws IOException {
fillBuffer(buffer);
try (Reader reader = new InputStreamReader(new ByteArrayInputStream("ABCDEFGHIJKLMNOPQRTUVWXYZ".getBytes(US_ASCII)), US_ASCII)) {
buffer.limit(7);
buffer.position(1);
assertEquals(reader.read(buffer), 6);
assertEquals(buffer.position(), 7);
assertEquals(buffer.limit(), 7);
buffer.limit(16);
buffer.position(8);
assertEquals(reader.read(buffer), 8);
assertEquals(buffer.position(), 16);
assertEquals(buffer.limit(), 16);
}
buffer.clear();
assertEquals(buffer.toString(), "xABCDEFxGHIJKLMNxxxxxxxx");
}
@Test
public void readLeftover() throws IOException {
byte[] b = new byte[] {'a', 'b', (byte) 0xC2};
ByteArrayInputStream bais = new ByteArrayInputStream(b);
InputStreamReader r = new InputStreamReader(bais,
UTF_8.newDecoder().onMalformedInput(CodingErrorAction.IGNORE));
int n = r.read();
assertEquals((char)n, 'a');
char[] c = new char[3];
n = r.read(c, 0, 3);
assertEquals(n, 1);
assertEquals((char)c[0], 'b');
n = r.read();
assertEquals(n, -1);
}
}
|
