/* -*- mode: C++; c-basic-offset: 4; indent-tabs-mode: nil -*- */
// vim: ft=cpp:expandtab:ts=8:sw=4:softtabstop=4:
#ident "$Id$"
/*
COPYING CONDITIONS NOTICE:

  This program is free software; you can redistribute it and/or modify
  it under the terms of version 2 of the GNU General Public License as
  published by the Free Software Foundation, and provided that the
  following conditions are met:

      * Redistributions of source code must retain this COPYING
        CONDITIONS NOTICE, the COPYRIGHT NOTICE (below), the
        DISCLAIMER (below), the UNIVERSITY PATENT NOTICE (below), the
        PATENT MARKING NOTICE (below), and the PATENT RIGHTS
        GRANT (below).

      * Redistributions in binary form must reproduce this COPYING
        CONDITIONS NOTICE, the COPYRIGHT NOTICE (below), the
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        PATENT MARKING NOTICE (below), and the PATENT RIGHTS
        GRANT (below) in the documentation and/or other materials
        provided with the distribution.

  You should have received a copy of the GNU General Public License
  along with this program; if not, write to the Free Software
  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
  02110-1301, USA.

COPYRIGHT NOTICE:

  TokuDB, Tokutek Fractal Tree Indexing Library.
  Copyright (C) 2007-2013 Tokutek, Inc.

DISCLAIMER:

  This program is distributed in the hope that it will be useful, but
  WITHOUT ANY WARRANTY; without even the implied warranty of
  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  General Public License for more details.

UNIVERSITY PATENT NOTICE:

  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.

PATENT MARKING NOTICE:

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

PATENT RIGHTS GRANT:

  "THIS IMPLEMENTATION" means the copyrightable works distributed by
  Tokutek as part of the Fractal Tree project.

  "PATENT CLAIMS" means the claims of patents that are owned or
  licensable by Tokutek, both currently or in the future; and that in
  the absence of this license would be infringed by THIS
  IMPLEMENTATION or by using or running THIS IMPLEMENTATION.

  "PATENT CHALLENGE" shall mean a challenge to the validity,
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  (including a cross-claim or counterclaim in a lawsuit) alleging that
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  such litigation is filed.  If you or your agent or exclusive
  licensee institute or order or agree to the institution of a PATENT
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*/

#ident "Copyright (c) 2007-2013 Tokutek Inc.  All rights reserved."
#ident "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."
/* The goal of this test.  Make sure that inserts stay behind deletes. */


#include "test.h"

#include <ft-cachetable-wrappers.h>
#include "ft-flusher.h"
#include "ft-flusher-internal.h"
#include "checkpoint.h"

static TOKUTXN const null_txn = 0;
static DB * const null_db = 0;

enum { NODESIZE = 1024, KSIZE=NODESIZE-100, TOKU_PSIZE=20 };

static void
doit (void) {
    BLOCKNUM node_leaf[3];
    BLOCKNUM node_root;
    
    CACHETABLE ct;
    FT_HANDLE t;

    int r;

    toku_cachetable_create(&ct, 500*1024*1024, ZERO_LSN, NULL_LOGGER);
    unlink(TOKU_TEST_FILENAME);
    r = toku_open_ft_handle(TOKU_TEST_FILENAME, 1, &t, NODESIZE, NODESIZE/2, TOKU_DEFAULT_COMPRESSION_METHOD, ct, null_txn, toku_builtin_compare_fun);
    assert(r==0);

    toku_testsetup_initialize();  // must precede any other toku_testsetup calls

    r = toku_testsetup_leaf(t, &node_leaf[0], 1, NULL, NULL);
    assert(r==0);
    r = toku_testsetup_leaf(t, &node_leaf[1], 1, NULL, NULL);
    assert(r==0);
    r = toku_testsetup_leaf(t, &node_leaf[2], 1, NULL, NULL);
    assert(r==0);

    int keylens[2];
    keylens[0] = 2;
    keylens[1] = 2;
    char first[2];
    first[0] = 'f';
    first[1] = 0;
    char second[2];
    second[0] = 'p';
    second[1] = 0;

    char* keys[2];
    keys[0] = first;
    keys[1] = second;
    r = toku_testsetup_nonleaf(t, 1, &node_root, 3, node_leaf, keys, keylens);
    assert(r==0);

    r = toku_testsetup_root(t, node_root);
    assert(r==0);


    r = toku_testsetup_insert_to_nonleaf(
        t, 
        node_root, 
        FT_INSERT,
        "a",
        2,
        NULL,
        0
        );
    r = toku_testsetup_insert_to_nonleaf(
        t, 
        node_root, 
        FT_INSERT,
        "m",
        2,
        NULL,
        0
        );

    r = toku_testsetup_insert_to_nonleaf(
        t, 
        node_root, 
        FT_INSERT,
        "z",
        2,
        NULL,
        0
        );


    // at this point, we have inserted three messages into
    // the root, one in each buffer, let's verify this.

    FTNODE node = NULL;
    struct ftnode_fetch_extra bfe;
    fill_bfe_for_min_read(&bfe, t->ft);
    toku_pin_ftnode_off_client_thread(
        t->ft, 
        node_root,
        toku_cachetable_hash(t->ft->cf, node_root),
        &bfe,
        PL_WRITE_EXPENSIVE, 
        0,
        NULL,
        &node
        );
    assert(node->height == 1);
    assert(node->n_children == 3);
    assert(toku_bnc_nbytesinbuf(BNC(node, 0)) > 0);
    assert(toku_bnc_nbytesinbuf(BNC(node, 1)) > 0);
    assert(toku_bnc_nbytesinbuf(BNC(node, 2)) > 0);
    toku_unpin_ftnode(t->ft, node);

    // now let's run a hot optimize, that should only flush the middle buffer
    DBT left;
    toku_fill_dbt(&left, "g", 2);
    DBT right;
    toku_fill_dbt(&right, "n", 2);
    r = toku_ft_hot_optimize(t, &left, &right, NULL, NULL);
    assert(r==0);

    // at this point, we have should have flushed
    // only the middle buffer, let's verify this.
    node = NULL;
    fill_bfe_for_min_read(&bfe, t->ft);
    toku_pin_ftnode_off_client_thread(
        t->ft, 
        node_root,
        toku_cachetable_hash(t->ft->cf, node_root),
        &bfe,
        PL_WRITE_EXPENSIVE, 
        0,
        NULL,
        &node
        );
    assert(node->height == 1);
    assert(node->n_children == 3);
    assert(toku_bnc_nbytesinbuf(BNC(node, 0)) > 0);
    assert(toku_bnc_nbytesinbuf(BNC(node, 1)) == 0);
    assert(toku_bnc_nbytesinbuf(BNC(node, 2)) > 0);
    toku_unpin_ftnode(t->ft, node);

    r = toku_close_ft_handle_nolsn(t, 0);    assert(r==0);
    toku_cachetable_close(&ct);
}

int
test_main (int argc __attribute__((__unused__)), const char *argv[] __attribute__((__unused__))) {
    default_parse_args(argc, argv);
    doit();
    return 0;
}
