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
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
|
/* ====================================================================
Licensed to the Apache Software Foundation (ASF) under one or more
contributor license agreements. See the NOTICE file distributed with
this work for additional information regarding copyright ownership.
The ASF licenses this file to You under the Apache License, Version 2.0
(the "License"); you may not use this file except in compliance with
the License. You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
==================================================================== */
package org.apache.poi.util;
import static org.junit.jupiter.api.Assertions.assertEquals;
import static org.junit.jupiter.api.Assertions.assertThrows;
import java.io.ByteArrayInputStream;
import java.io.IOException;
import org.junit.jupiter.api.Test;
/**
* Test IntegerField code
*/
public final class TestIntegerField {
private static final int[] _test_array = {Integer.MIN_VALUE, -1, 0, 1, Integer.MAX_VALUE};
@Test
public void testConstructors() {
assertThrows(ArrayIndexOutOfBoundsException.class, () -> new IntegerField(-1));
IntegerField field = new IntegerField(2);
assertEquals(0, field.get());
assertThrows(ArrayIndexOutOfBoundsException.class, () -> new IntegerField(-1, 1));
field = new IntegerField(2, 0x12345678);
assertEquals(0x12345678, field.get());
assertThrows(ArrayIndexOutOfBoundsException.class, () -> new IntegerField(-1, 1, new byte[ 6 ]));
byte[] array = new byte[ 6 ];
field = new IntegerField(2, 0x12345678, array);
assertEquals(0x12345678, field.get());
assertEquals(( byte ) 0x78, array[ 2 ]);
assertEquals(( byte ) 0x56, array[ 3 ]);
assertEquals(( byte ) 0x34, array[ 4 ]);
assertEquals(( byte ) 0x12, array[ 5 ]);
assertThrows(ArrayIndexOutOfBoundsException.class, () -> new IntegerField(2, 5, new byte[ 5 ]));
for (int element : _test_array) {
array = new byte[ 4 ];
new IntegerField(0, element, array);
assertEquals(element, new IntegerField(0, array).get());
}
}
@Test
public void testSet() {
IntegerField field = new IntegerField(0);
byte[] array = new byte[ 4 ];
for (int j = 0; j < _test_array.length; j++) {
field.set(_test_array[ j ]);
assertEquals(_test_array[ j ], field.get(), "testing _1 " + j);
field = new IntegerField(0);
field.set(_test_array[ j ], array);
assertEquals(_test_array[ j ], field.get(), "testing _2 ");
assertEquals(( byte ) (_test_array[ j ] % 256), array[ 0 ], "testing _3.0 " + _test_array[ j ]);
assertEquals(( byte ) ((_test_array[ j ] >> 8) % 256), array[ 1 ], "testing _3.1 " + _test_array[ j ]);
assertEquals(( byte ) ((_test_array[ j ] >> 16) % 256), array[ 2 ], "testing _3.2 " + _test_array[ j ]);
assertEquals(( byte ) ((_test_array[ j ] >> 24) % 256), array[ 3 ], "testing _3.3 " + _test_array[ j ]);
}
}
@Test
public void testReadFromBytes() {
IntegerField field1 = new IntegerField(1);
byte[] array = new byte[ 4 ];
assertThrows(ArrayIndexOutOfBoundsException.class, () -> field1.readFromBytes(array));
IntegerField field2 = new IntegerField(0);
for (int j = 0; j < _test_array.length; j++) {
array[ 0 ] = ( byte ) (_test_array[ j ] % 256);
array[ 1 ] = ( byte ) ((_test_array[ j ] >> 8) % 256);
array[ 2 ] = ( byte ) ((_test_array[ j ] >> 16) % 256);
array[ 3 ] = ( byte ) ((_test_array[ j ] >> 24) % 256);
field2.readFromBytes(array);
assertEquals(_test_array[ j ], field2.get(), "testing " + j);
}
}
@Test
public void testReadFromStream() throws IOException {
IntegerField field = new IntegerField(0);
byte[] buffer = new byte[ _test_array.length * 4 ];
for (int j = 0; j < _test_array.length; j++) {
buffer[ (j * 4) + 0 ] = ( byte ) (_test_array[ j ] % 256);
buffer[ (j * 4) + 1 ] = ( byte ) ((_test_array[ j ] >> 8) % 256);
buffer[ (j * 4) + 2 ] = ( byte ) ((_test_array[ j ] >> 16) % 256);
buffer[ (j * 4) + 3 ] = ( byte ) ((_test_array[ j ] >> 24) % 256);
}
ByteArrayInputStream stream = new ByteArrayInputStream(buffer);
for (int j = 0; j < buffer.length / 4; j++) {
field.readFromStream(stream);
assertEquals(_test_array[ j ], field.get(), "Testing " + j);
}
}
@Test
public void testWriteToBytes() {
IntegerField field = new IntegerField(0);
byte[] array = new byte[ 4 ];
for (int b : _test_array) {
field.set(b);
field.writeToBytes(array);
int val = array[ 3 ] << 24;
val &= 0xFF000000;
val += (array[ 2 ] << 16) & 0x00FF0000;
val += (array[ 1 ] << 8) & 0x0000FF00;
val += (array[ 0 ] & 0x000000FF);
assertEquals(b, val, "testing ");
}
}
}
|
