mirror of
https://github.com/GerbilSoft/zlib-ng.git
synced 2025-06-18 11:35:35 -04:00
99 lines
2.7 KiB
C++
99 lines
2.7 KiB
C++
/* test_dict.cc - Test deflate() and inflate() with preset dictionary */
|
|
|
|
#include "zbuild.h"
|
|
#ifdef ZLIB_COMPAT
|
|
# include "zlib.h"
|
|
#else
|
|
# include "zlib-ng.h"
|
|
#endif
|
|
|
|
#include <stdio.h>
|
|
#include <stdint.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
|
|
#include "test_shared.h"
|
|
|
|
#include <gtest/gtest.h>
|
|
|
|
/* Maximum dictionary size, according to inflateGetDictionary() description. */
|
|
#define MAX_DICTIONARY_SIZE 32768
|
|
|
|
static const char dictionary[] = "hello";
|
|
|
|
TEST(dictionary, basic) {
|
|
PREFIX3(stream) c_stream, d_stream;
|
|
uint8_t compr[128], uncompr[128];
|
|
z_size_t compr_len = sizeof(compr), uncompr_len = sizeof(uncompr);
|
|
uint32_t dict_adler = 0;
|
|
uint8_t check_dict[MAX_DICTIONARY_SIZE];
|
|
uint32_t check_dict_len = 0;
|
|
int err;
|
|
|
|
memset(&c_stream, 0, sizeof(c_stream));
|
|
memset(&d_stream, 0, sizeof(d_stream));
|
|
|
|
err = PREFIX(deflateInit)(&c_stream, Z_BEST_COMPRESSION);
|
|
EXPECT_EQ(err, Z_OK);
|
|
|
|
err = PREFIX(deflateSetDictionary)(&c_stream,
|
|
(const unsigned char *)dictionary, (int)sizeof(dictionary));
|
|
EXPECT_EQ(err, Z_OK);
|
|
|
|
dict_adler = c_stream.adler;
|
|
c_stream.next_out = compr;
|
|
c_stream.avail_out = (uint32_t)compr_len;
|
|
|
|
c_stream.next_in = (z_const unsigned char *)hello;
|
|
c_stream.avail_in = (uint32_t)hello_len;
|
|
|
|
err = PREFIX(deflate)(&c_stream, Z_FINISH);
|
|
EXPECT_EQ(err, Z_STREAM_END);
|
|
|
|
err = PREFIX(deflateEnd)(&c_stream);
|
|
EXPECT_EQ(err, Z_OK);
|
|
|
|
compr_len = (z_size_t)c_stream.total_out;
|
|
|
|
strcpy((char*)uncompr, "garbage garbage garbage");
|
|
|
|
d_stream.next_in = compr;
|
|
d_stream.avail_in = (unsigned int)compr_len;
|
|
|
|
err = PREFIX(inflateInit)(&d_stream);
|
|
EXPECT_EQ(err, Z_OK);
|
|
|
|
d_stream.next_out = uncompr;
|
|
d_stream.avail_out = (unsigned int)uncompr_len;
|
|
|
|
for (;;) {
|
|
err = PREFIX(inflate)(&d_stream, Z_NO_FLUSH);
|
|
if (err == Z_STREAM_END)
|
|
break;
|
|
if (err == Z_NEED_DICT) {
|
|
EXPECT_EQ(d_stream.adler, dict_adler);
|
|
err = PREFIX(inflateSetDictionary)(&d_stream, (const unsigned char*)dictionary,
|
|
(uint32_t)sizeof(dictionary));
|
|
EXPECT_EQ(d_stream.adler, dict_adler);
|
|
}
|
|
EXPECT_EQ(err, Z_OK);
|
|
}
|
|
|
|
err = PREFIX(inflateGetDictionary)(&d_stream, NULL, &check_dict_len);
|
|
EXPECT_EQ(err, Z_OK);
|
|
#ifndef S390_DFLTCC_INFLATE
|
|
EXPECT_GE(check_dict_len, sizeof(dictionary));
|
|
#endif
|
|
|
|
err = PREFIX(inflateGetDictionary)(&d_stream, check_dict, &check_dict_len);
|
|
EXPECT_EQ(err, Z_OK);
|
|
#ifndef S390_DFLTCC_INFLATE
|
|
EXPECT_TRUE(memcmp(dictionary, check_dict, sizeof(dictionary)) == 0);
|
|
#endif
|
|
|
|
err = PREFIX(inflateEnd)(&d_stream);
|
|
EXPECT_EQ(err, Z_OK);
|
|
|
|
EXPECT_TRUE(strncmp((char*)uncompr, hello, sizeof(hello)) == 0);
|
|
}
|