/* -*- mode: C++; c-basic-offset: 4; indent-tabs-mode: nil -*- */
// vim: ft=cpp:expandtab:ts=8:sw=4:softtabstop=4:
#ident "$Id$"
#ident "Copyright (c) 2007 Tokutek Inc.  All rights reserved."
#include "test.h"

#include <stdio.h>
#include <stdlib.h>

#include <unistd.h>
#include <memory.h>
#include <sys/stat.h>
#include <db.h>




static void
db_put (DB *db, int k, int v) {
    DB_TXN * const null_txn = 0;
    DBT key, val;
    int r = db->put(db, null_txn, dbt_init(&key, &k, sizeof k), dbt_init(&val, &v, sizeof v), 0);
    assert(r == 0);
}

static void
db_del (DB *db, int k) {
    DB_TXN * const null_txn = 0;
    DBT key;
    int r = db->del(db, null_txn, dbt_init(&key, &k, sizeof k), 0);
    assert(r == 0);
}

static void
expect_db_get (DB *db, int k, int v) {
    DB_TXN * const null_txn = 0;
    DBT key, val;
    int r = db->get(db, null_txn, dbt_init(&key, &k, sizeof k), dbt_init_malloc(&val), 0);
    assert(r == 0);
    int vv;
    assert(val.size == sizeof vv);
    memcpy(&vv, val.data, val.size);
    assert(vv == v);
    toku_free(val.data);
}

static void
expect_cursor_get (DBC *cursor, int k, int v) {
    DBT key, val;
    int r = cursor->c_get(cursor, dbt_init_malloc(&key), dbt_init_malloc(&val), DB_NEXT);
    assert(r == 0);
    assert(key.size == sizeof k);
    int kk;
    memcpy(&kk, key.data, key.size);
    assert(val.size == sizeof v);
    int vv;
    memcpy(&vv, val.data, val.size);
    if (kk != k || vv != v) printf("expect key %u got %u - %u %u\n", (uint32_t)htonl(k), (uint32_t)htonl(kk), (uint32_t)htonl(v), (uint32_t)htonl(vv));
    assert(kk == k);
    assert(vv == v);

    toku_free(key.data);
    toku_free(val.data);
}

static void
expect_cursor_set (DBC *cursor, int k, int expectr) {
    DBT key, val;
    int r = cursor->c_get(cursor, dbt_init(&key, &k, sizeof k), dbt_init_malloc(&val), DB_SET);
    assert(r == expectr);
    if (val.data) toku_free(val.data);
}

static void
expect_cursor_get_current (DBC *cursor, int k, int v) {
    DBT key, val;
    int r = cursor->c_get(cursor, dbt_init_malloc(&key), dbt_init_malloc(&val), DB_CURRENT);
    assert(r == 0);
    int kk, vv;
    assert(key.size == sizeof kk); memcpy(&kk, key.data, key.size); assert(kk == k);
    assert(val.size == sizeof vv); memcpy(&vv, val.data, val.size); assert(vv == v);
    toku_free(key.data); toku_free(val.data);
}


/* insert, close, delete, insert, search */
static void
test_icdi_search (int n, int dup_mode) {
    if (verbose) printf("test_icdi_search:%d %d\n", n, dup_mode);

    DB_TXN * const null_txn = 0;
    const char * const fname = "test_icdi_search.ft_handle";
    int r;

    toku_os_recursive_delete(TOKU_TEST_FILENAME);
    r = toku_os_mkdir(TOKU_TEST_FILENAME, S_IRWXU+S_IRWXG+S_IRWXO); CKERR(r);

    /* create the dup database file */
    DB_ENV *env;
    r = db_env_create(&env, 0); assert(r == 0);
    r = env->open(env, TOKU_TEST_FILENAME, DB_CREATE+DB_PRIVATE+DB_INIT_MPOOL, 0); assert(r == 0);

    DB *db;
    r = db_create(&db, env, 0); assert(r == 0);
    r = db->set_flags(db, dup_mode); assert(r == 0);
    r = db->set_pagesize(db, 4096); assert(r == 0);
    r = db->open(db, null_txn, fname, "main", DB_BTREE, DB_CREATE, 0666); assert(r == 0);

    int i;
    for (i=0; i<n; i++) {
        int k = htonl(i);
        int v = htonl(i);
        db_put(db, k, v);

        expect_db_get(db, k, v);
    } 

    /* reopen the database to force nonleaf buffering */
    r = db->close(db, 0); assert(r == 0);
    r = db_create(&db, env, 0); assert(r == 0);
    r = db->set_flags(db, dup_mode); assert(r == 0);
    r = db->set_pagesize(db, 4096); assert(r == 0);
    r = db->open(db, null_txn, fname, "main", DB_BTREE, 0, 0666); assert(r == 0);

    for (i=0; i<n; i++)
        db_del(db, htonl(i));

    {
    DBC *cursor;
    r = db->cursor(db, 0, &cursor, 0); assert(r == 0);
    expect_cursor_set(cursor, 0, DB_NOTFOUND);
    r = cursor->c_close(cursor); assert(r == 0);
    }

    for (i=0; i<n; i++) {
        int k = htonl(i);
        int v = htonl(n+i);
        db_put(db, k, v);

        DBC *cursor;
        r = db->cursor(db, 0, &cursor, 0); assert(r == 0);
        expect_cursor_set(cursor, k, 0);
        expect_cursor_get_current(cursor, k, v);
        r = cursor->c_close(cursor); assert(r == 0);
    } 

    DBC *cursor;
    r = db->cursor(db, null_txn, &cursor, 0); assert(r == 0);

    for (i=0; i<n; i++) {
        expect_cursor_get(cursor, htonl(i), htonl(n+i));
    }

    r = cursor->c_close(cursor); assert(r == 0);

    r = db->close(db, 0); assert(r == 0);
    r = env->close(env, 0); assert(r == 0);
}


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

    parse_args(argc, argv);
  
    toku_os_recursive_delete(TOKU_TEST_FILENAME);
    toku_os_mkdir(TOKU_TEST_FILENAME, S_IRWXU+S_IRWXG+S_IRWXO);

    for (i=1; i<65537; i *= 2) {
        test_icdi_search(i, 0);
    }
    return 0;
}
