isc/tests/symtab_test.c

/*
 * Copyright (C) 2011-2013, 2016  Internet Systems Consortium, Inc. ("ISC")
 *
 * This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/.
 */

/* $Id$ */

/*! \file */

#include <config.h>

#include <atf-c.h>

#include <unistd.h>

#include <isc/symtab.h>
#include <isc/print.h>

#include "isctest.h"

static void
undefine(char *key, unsigned int type, isc_symvalue_t value, void *arg) {
    UNUSED(arg);

    ATF_REQUIRE_EQ(type, 1);
    isc_mem_free(mctx, key);
    isc_mem_free(mctx, value.as_pointer);
}

/*
 * Individual unit tests
 */

ATF_TC(symtab_grow);
ATF_TC_HEAD(symtab_grow, tc) {
    atf_tc_set_md_var(tc, "descr", "symbol table growth");
}
ATF_TC_BODY(symtab_grow, tc) {
    isc_result_t result;
    isc_symtab_t *st = NULL;
    isc_symvalue_t value;
    isc_symexists_t policy = isc_symexists_reject;
    int i;

    UNUSED(tc);

    result = isc_test_begin(NULL, ISC_TRUE);
    ATF_REQUIRE_EQ(result, ISC_R_SUCCESS);

    result = isc_symtab_create(mctx, 3, undefine, NULL, ISC_FALSE, &st);
    ATF_REQUIRE_EQ(result, ISC_R_SUCCESS);
    ATF_REQUIRE(st != NULL);

    /* Nothing should be in the table yet */

    /*
     * Put 1024 entries in the table (this should necessate
     * regrowing the hash table several times
     */
    for (i = 0; i < 1024; i++) {
        char str[16], *key;

        snprintf(str, sizeof(str), "%04x", i);
        key = isc_mem_strdup(mctx, str);
        ATF_REQUIRE(key != NULL);
        value.as_pointer = isc_mem_strdup(mctx, str);
        ATF_REQUIRE(value.as_pointer != NULL);
        result = isc_symtab_define(st, key, 1, value, policy);
        ATF_CHECK_EQ(result, ISC_R_SUCCESS);
        if (result != ISC_R_SUCCESS)
            undefine(key, 1, value, NULL);
    }

    /*
     * Try to put them in again; this should fail
     */
    for (i = 0; i < 1024; i++) {
        char str[16], *key;

        snprintf(str, sizeof(str), "%04x", i);
        key = isc_mem_strdup(mctx, str);
        ATF_REQUIRE(key != NULL);
        value.as_pointer = isc_mem_strdup(mctx, str);
        ATF_REQUIRE(value.as_pointer != NULL);
        result = isc_symtab_define(st, key, 1, value, policy);
        ATF_CHECK_EQ(result, ISC_R_EXISTS);
        undefine(key, 1, value, NULL);
    }

    /*
     * Retrieve them; this should succeed
     */
    for (i = 0; i < 1024; i++) {
        char str[16];

        snprintf(str, sizeof(str), "%04x", i);
        result = isc_symtab_lookup(st, str, 0, &value);
        ATF_CHECK_EQ(result, ISC_R_SUCCESS);
        ATF_CHECK_STREQ(str, (char *)value.as_pointer);
    }

    /*
     * Undefine them
     */
    for (i = 0; i < 1024; i++) {
        char str[16];

        snprintf(str, sizeof(str), "%04x", i);
        result = isc_symtab_undefine(st, str, 1);
        ATF_CHECK_EQ(result, ISC_R_SUCCESS);
    }

    /*
     * Retrieve them again; this should fail
     */
    for (i = 0; i < 1024; i++) {
        char str[16];

        snprintf(str, sizeof(str), "%04x", i);
        result = isc_symtab_lookup(st, str, 0, &value);
        ATF_CHECK_EQ(result, ISC_R_NOTFOUND);
    }

    isc_symtab_destroy(&st);
    isc_test_end();
}

/*
 * Main
 */
ATF_TP_ADD_TCS(tp) {
    ATF_TP_ADD_TC(tp, symtab_grow);

    return (atf_no_error());
}