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
|
/*
* Copyright (c) 2015 ARM Limited
* All rights reserved
*
* The license below extends only to copyright in the software and shall
* not be construed as granting a license to any other intellectual
* property including but not limited to intellectual property relating
* to a hardware implementation of the functionality of the software
* licensed hereunder. You may use the software subject to the license
* terms below provided that you ensure that this notice is replicated
* unmodified and in its entirety in all distributions of the software,
* modified or unmodified, in source code or in binary form.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met: redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer;
* redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution;
* neither the name of the copyright holders nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* Authors: Andreas Sandberg
*/
#include "base/circlebuf.hh"
#include "unittest/unittest.hh"
const char data[] = {
0x0, 0x1, 0x2, 0x3, 0x4, 0x5, 0x6, 0x7,
0x8, 0x9, 0xa, 0xb, 0xc, 0xd, 0xe, 0xf,
};
int
main(int argc, char *argv[])
{
UnitTest::setCase("Basic non-overflow functionality");
{
CircleBuf<char> buf(8);
char foo[16];
// Write empty buffer, no overflow
buf.write(data, 8);
EXPECT_EQ(buf.size(), 8);
buf.peek(foo, 8);
EXPECT_EQ(memcmp(foo, data, 8), 0);
// Read 2
buf.read(foo, 2);
EXPECT_EQ(memcmp(foo, data, 2), 0);
EXPECT_EQ(buf.size(), 6);
buf.read(foo, 6);
EXPECT_EQ(memcmp(foo, data + 2, 6), 0);
EXPECT_EQ(buf.size(), 0);
}
UnitTest::setCase("Basic single write overflow functionality");
{
CircleBuf<char> buf(8);
char foo[16];
buf.write(data, 16);
EXPECT_EQ(buf.size(), 8);
buf.peek(foo, 8);
EXPECT_EQ(memcmp(data + 8, foo, 8), 0);
}
UnitTest::setCase("Multi-write overflow functionality");
{
CircleBuf<char> buf(8);
char foo[16];
// Write, no overflow, write overflow
buf.write(data, 6);
buf.write(data + 8, 6);
EXPECT_EQ(buf.size(), 8);
buf.peek(foo, 8);
EXPECT_EQ(memcmp(data + 4, foo, 2), 0);
EXPECT_EQ(memcmp(data + 8, foo + 2, 6), 0);
}
UnitTest::setCase("Pointer wrap around");
{
CircleBuf<char> buf(8);
char foo[16];
// _start == 0, _stop = 8
buf.write(data, 8);
// _start == 4, _stop = 8
buf.read(foo, 4);
// _start == 4, _stop = 12
buf.write(data + 8, 4);
EXPECT_EQ(buf.size(), 8);
// _start == 10, _stop = 12
// Normalized: _start == 2, _stop = 4
buf.read(foo + 4, 6);
EXPECT_EQ(buf.size(), 2);
EXPECT_EQ(memcmp(data, foo, 10), 0);
// Normalized: _start == 4, _stop = 4
buf.read(foo + 10, 2);
EXPECT_EQ(buf.size(), 0);
EXPECT_EQ(memcmp(data, foo, 12), 0);
}
return UnitTest::printResults();
}
|
