1 /* test_large_buffers.cc - Test deflate() and inflate() with large buffers */
2
3 #include "zbuild.h"
4 #ifdef ZLIB_COMPAT
5 # include "zlib.h"
6 #else
7 # include "zlib-ng.h"
8 #endif
9
10 #include <stdio.h>
11 #include <stdint.h>
12 #include <stdlib.h>
13 #include <string.h>
14 #include <time.h>
15
16 #include "test_shared.h"
17
18 #include <gtest/gtest.h>
19
20 #define COMPR_BUFFER_SIZE (48 * 1024)
21 #define UNCOMPR_BUFFER_SIZE (32 * 1024)
22 #define UNCOMPR_RAND_SIZE (8 * 1024)
23
TEST(deflate,large_buffers)24 TEST(deflate, large_buffers) {
25 PREFIX3(stream) c_stream, d_stream;
26 uint8_t *compr, *uncompr;
27 uint32_t compr_len, uncompr_len;
28 int32_t i;
29 time_t now;
30 int err;
31
32 memset(&c_stream, 0, sizeof(c_stream));
33 memset(&d_stream, 0, sizeof(d_stream));
34
35 compr = (uint8_t *)calloc(1, COMPR_BUFFER_SIZE);
36 ASSERT_TRUE(compr != NULL);
37 uncompr = (uint8_t *)calloc(1, UNCOMPR_BUFFER_SIZE);
38 ASSERT_TRUE(uncompr != NULL);
39
40 compr_len = COMPR_BUFFER_SIZE;
41 uncompr_len = UNCOMPR_BUFFER_SIZE;
42
43 srand((unsigned)time(&now));
44 for (i = 0; i < UNCOMPR_RAND_SIZE; i++)
45 uncompr[i] = (uint8_t)(rand() % 256);
46
47 err = PREFIX(deflateInit)(&c_stream, Z_DEFAULT_COMPRESSION);
48 EXPECT_EQ(err, Z_OK);
49
50 c_stream.next_out = compr;
51 c_stream.avail_out = compr_len;
52 c_stream.next_in = uncompr;
53 c_stream.avail_in = uncompr_len;
54
55 err = PREFIX(deflate)(&c_stream, Z_NO_FLUSH);
56 EXPECT_EQ(err, Z_OK);
57 EXPECT_EQ(c_stream.avail_in, 0);
58
59 err = PREFIX(deflate)(&c_stream, Z_FINISH);
60 EXPECT_EQ(err, Z_STREAM_END);
61
62 err = PREFIX(deflateEnd)(&c_stream);
63 EXPECT_EQ(err, Z_OK);
64
65 d_stream.next_in = compr;
66 d_stream.avail_in = compr_len;
67 d_stream.next_out = uncompr;
68
69 err = PREFIX(inflateInit)(&d_stream);
70 EXPECT_EQ(err, Z_OK);
71
72 for (;;) {
73 d_stream.next_out = uncompr; /* discard the output */
74 d_stream.avail_out = uncompr_len;
75 err = PREFIX(inflate)(&d_stream, Z_NO_FLUSH);
76 if (err == Z_STREAM_END) break;
77 EXPECT_EQ(err, Z_OK);
78 }
79
80 err = PREFIX(inflateEnd)(&d_stream);
81 EXPECT_EQ(err, Z_OK);
82
83 EXPECT_EQ(d_stream.total_out, uncompr_len);
84
85 free(compr);
86 free(uncompr);
87 }
88