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
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
|
#include <stdlib.h>
#include <assert.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <ev.h>
#include "buffer.h"
static void test1() {
struct Buffer *buffer;
char input[] = "This is a test.";
char output[sizeof(input)];
int len, i;
buffer = new_buffer(256, EV_DEFAULT);
assert(buffer != NULL);
len = buffer_push(buffer, input, sizeof(input));
assert(len == sizeof(input));
len = buffer_peek(buffer, output, sizeof(output));
assert(len == sizeof(input));
for (i = 0; i < len; i++)
assert(input[i] == output[i]);
/* second peek to ensure the first didn't permute the state of the buffer */
len = buffer_peek(buffer, output, sizeof(output));
assert(len == sizeof(input));
for (i = 0; i < len; i++)
assert(input[i] == output[i]);
/* test pop */
len = buffer_pop(buffer, output, sizeof(output));
assert(len == sizeof(input));
for (i = 0; i < len; i++)
assert(input[i] == output[i]);
len = buffer_pop(buffer, output, sizeof(output));
assert(len == 0);
free_buffer(buffer);
}
static void test2() {
struct Buffer *buffer;
char input[] = "Testing wrap around behaviour.";
char output[sizeof(input)];
int len, i = 0;
buffer = new_buffer(256, EV_DEFAULT);
assert(buffer != NULL);
while (i < 236) {
len = buffer_push(buffer, input, sizeof(input));
assert(len == sizeof(input));
i += len;
}
while (len) {
len = buffer_pop(buffer, output, sizeof(output));
}
len = buffer_push(buffer, input, sizeof(input));
assert(len == sizeof(input));
len = buffer_peek(buffer, output, sizeof(output));
assert(len == sizeof(input));
for (i = 0; i < len; i++)
assert(input[i] == output[i]);
len = buffer_pop(buffer, output, sizeof(output));
assert(len == sizeof(input));
for (i = 0; i < len; i++)
assert(input[i] == output[i]);
len = buffer_push(buffer, input, sizeof(input));
assert(len == sizeof(input));
len = buffer_peek(buffer, output, sizeof(output));
assert(len == sizeof(input));
for (i = 0; i < len; i++)
assert(input[i] == output[i]);
free_buffer(buffer);
}
static void test3() {
struct Buffer *buffer;
char input[] = "Test buffer resizing.";
char output[sizeof(input)];
int len, i;
buffer = new_buffer(256, EV_DEFAULT);
assert(buffer != NULL);
len = buffer_push(buffer, input, sizeof(input));
assert(len == sizeof(input));
/* Test resizing to too small of a buffer size */
len = buffer_resize(buffer, 8);
assert(len == -1);
buffer_resize(buffer, 32);
assert(buffer_room(buffer) == 32 - sizeof(input));
len = buffer_peek(buffer, output, sizeof(output));
assert(len == sizeof(input));
for (i = 0; i < len; i++)
assert(input[i] == output[i]);
free_buffer(buffer);
}
static void test4() {
struct Buffer *buffer;
int read_fd, write_fd;
buffer = new_buffer(4096, EV_DEFAULT);
read_fd = open("/dev/zero", O_RDONLY);
if (read_fd < 0) {
perror("open:");
exit(1);
}
write_fd = open("/dev/null", O_WRONLY);
if (write_fd < 0) {
perror("open:");
exit(1);
}
while (buffer->tx_bytes < 65536) {
buffer_read(buffer, read_fd);
buffer_write(buffer, write_fd);
}
free_buffer(buffer);
}
static void test_buffer_coalesce() {
struct Buffer *buffer;
char input[] = "Test buffer resizing.";
char output[sizeof(input)];
int len;
buffer = new_buffer(4096, EV_DEFAULT);
len = buffer_push(buffer, input, sizeof(input));
assert(len == sizeof(input));
len = buffer_pop(buffer, output, sizeof(output));
assert(len == sizeof(output));
assert(buffer_len(buffer) == 0);
assert(buffer->head != 0);
len = buffer_coalesce(buffer, NULL);
assert(len == 0);
}
int main() {
test1();
test2();
test3();
test4();
test_buffer_coalesce();
}
|
