mariadb/storage/tokudb/ft-index/ft/tests/quicklz-test.cc

/* -*- mode: C++; c-basic-offset: 4; indent-tabs-mode: nil -*- */
// vim: ft=cpp:expandtab:ts=8:sw=4:softtabstop=4:
// Test quicklz.
// Compare to compress-test which tests the toku compression (which is a composite of quicklz and zlib).
/*
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  TokuFT, Tokutek Fractal Tree Indexing Library.
  Copyright (C) 2007-2013 Tokutek, Inc.

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  The technology is licensed by the Massachusetts Institute of
  Technology, Rutgers State University of New Jersey, and the Research
  Foundation of State University of New York at Stony Brook under
  United States of America Serial No. 11/760379 and to the patents
  and/or patent applications resulting from it.

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  This software is covered by US Patent No. 8,185,551.
  This software is covered by US Patent No. 8,489,638.

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*/

#ident "Copyright (c) 2010-2013 Tokutek Inc.  All rights reserved."
#ident "$Id$"

#include "test.h"
#include "serialize/quicklz.h"

static void test_qlz_random_i (int i) {
    if (verbose) printf("i=%d\n", i);

    qlz_state_compress *MALLOC(compress_state);
    qlz_state_decompress *MALLOC(decompress_state);

    char *MALLOC_N(i, m);
    char *MALLOC_N(i, m2);
    for (int j=0; j<i; j++) {
	m[j] = (random()%256)-128;
    }
    int csize_bound = i+400;
    char *MALLOC_N(csize_bound, c);
    memset(compress_state,   0, sizeof(*compress_state));
    memset(decompress_state, 0, sizeof(*decompress_state));
    int s = qlz_compress(m, c, i, compress_state);
    assert(s <= csize_bound);
    int r = qlz_decompress(c, m2, decompress_state);
    assert(r==i);
    assert(memcmp(m, m2, i)==0);

    toku_free(m);
    toku_free(c);
    toku_free(m2);
    toku_free(compress_state);
    toku_free(decompress_state);
}

static void test_qlz_random (void) {
    // quicklz cannot handle i==0.
    for (int i=1; i<100; i++) {
	test_qlz_random_i(i);
    }
    for (int i=64; i<=1024*1024*8; i*=4) {
	test_qlz_random_i(i);
	test_qlz_random_i(i+random()%i);
    }
}

int test_main (int argc, const char *argv[]) {
    default_parse_args(argc, argv);
    
    test_qlz_random();

    return 0;
}