path: root/common/ini/ini_config_ut.c

/*
    INI LIBRARY

    Unit test for the INI library.

    Copyright (C) Dmitri Pal <dpal@redhat.com> 2009

    INI Library is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.

    INI Library 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 Lesser General Public License for more details.

    You should have received a copy of the GNU Lesser General Public License
    along with INI Library.  If not, see <http://www.gnu.org/licenses/>.
*/

#include <stdlib.h>
#include <stdio.h>
#include <errno.h>
#include <unistd.h>
#include <fcntl.h>
#define TRACE_HOME
#include "ini_config.h"
#include "collection.h"
#include "collection_tools.h"


int basic_test(void)
{
    int error;
    struct collection_item *ini_config = NULL;
    struct collection_item *error_set = NULL;

    error = config_for_app("test", NULL, NULL,
                           &ini_config, INI_STOP_ON_NONE, &error_set);
    if (error != EINVAL) {
        printf("Expected error EINVAL got somethign else: %d\n",error);
        return EINVAL;
    }

    error = config_for_app("test", "foo", "bar",
                           &ini_config, INI_STOP_ON_ANY, &error_set);
    if (error != ENOENT) {
        printf("Expected error ENOENT got somethign else: %d\n",error);
        return ENOENT;
    }

    error = config_for_app("test", "./ini.conf", "./ini.d",
                           &ini_config, INI_STOP_ON_NONE, &error_set);
    if (error) {
        printf("Attempt to read configuration returned error: %d\n",error);
        return error;
    }

    col_debug_collection(ini_config,COL_TRAVERSE_DEFAULT);
    col_print_collection(ini_config);
    col_print_collection(error_set);

    printf("\n\n----------------------\n");
    /* Output parsing errors (if any) */
    print_config_parsing_errors(stdout, error_set);
    printf("----------------------\n\n\n");


    free_ini_config(ini_config);
    free_ini_config_errors(error_set);
    return 0;
}

int single_file(void)
{
    int error;
    struct collection_item *ini_config = NULL;
    struct collection_item *error_set = NULL;
    struct collection_item *lines = NULL;

    error = config_from_file("test", "./not_exist_ini.conf",
                             &ini_config, INI_STOP_ON_NONE, &error_set);
    if (error) {
        printf("Attempt to read configuration returned error: %d. EXPECTED.\n\n", error);
        if(error != ENOENT) return error;
    }

    error = config_from_file("test", "./ini.conf", &ini_config, INI_STOP_ON_NONE, &error_set);
    if (error) {
        printf("Attempt to read configuration returned error: %d\n",error);
        return error;
    }

    col_debug_collection(ini_config, COL_TRAVERSE_DEFAULT);
    col_print_collection(ini_config);
    col_print_collection(error_set);

    printf("\n\n----------------------\n");
    /* Output parsing errors (if any) */
    print_file_parsing_errors(stdout, error_set);
    printf("----------------------\n\n\n");


    free_ini_config(ini_config);
    free_ini_config_errors(error_set);

    ini_config = NULL;
    error_set = NULL;

    printf("TEST WITH LINES\n");

    error = config_from_file_with_lines("test", "./ini.conf",
                                        &ini_config, INI_STOP_ON_NONE,
                                        &error_set, &lines);
    if (error) {
        printf("Attempt to read configuration returned error: %d\n",error);
        return error;
    }

    col_debug_collection(ini_config, COL_TRAVERSE_DEFAULT);
    col_debug_collection(lines, COL_TRAVERSE_DEFAULT);

    printf("\n\n----------------------\n");
    /* Output parsing errors (if any) */
    print_file_parsing_errors(stdout, error_set);
    printf("----------------------\n\n\n");


    free_ini_config(ini_config);
    free_ini_config_errors(error_set);
    free_ini_config_lines(lines);

    return 0;
}

int single_fd(void)
{
    int error;
    struct collection_item *ini_config = NULL;
    struct collection_item *error_set = NULL;
    struct collection_item *lines = NULL;

    int fd = open("./ini.conf", O_RDONLY);
    if (fd < 0) {
        error = errno;
        printf("Attempt to read configuration returned error: %d\n", error);
        return error;
    }

    error = config_from_fd("test", fd, "./ini.conf", &ini_config,
                           INI_STOP_ON_NONE, &error_set);
    if (error) {
        printf("Attempt to read configuration returned error: %d\n",error);
        return error;
    }

    col_debug_collection(ini_config, COL_TRAVERSE_DEFAULT);
    col_print_collection(ini_config);
    col_print_collection(error_set);

    printf("\n\n----------------------\n");
    /* Output parsing errors (if any) */
    print_file_parsing_errors(stdout, error_set);
    printf("----------------------\n\n\n");


    free_ini_config(ini_config);
    free_ini_config_errors(error_set);
    close(fd);

    ini_config = NULL;
    error_set = NULL;

    printf("TEST WITH LINES\n");

    fd = open("./ini.conf", O_RDONLY);
    if (fd < 0) {
        error = errno;
        printf("Attempt to read configuration returned error: %d\n", error);
        return error;
    }
    error = config_from_fd_with_lines("test", fd,
                                      "./ini.conf",
                                      &ini_config,
                                      INI_STOP_ON_NONE,
                                      &error_set, &lines);
    if (error) {
        printf("Attempt to read configuration returned error: %d\n",error);
        return error;
    }

    col_debug_collection(ini_config, COL_TRAVERSE_DEFAULT);
    col_debug_collection(lines, COL_TRAVERSE_DEFAULT);

    printf("\n\n----------------------\n");
    /* Output parsing errors (if any) */
    print_file_parsing_errors(stdout, error_set);
    printf("----------------------\n\n\n");


    free_ini_config(ini_config);
    free_ini_config_errors(error_set);
    free_ini_config_lines(lines);

    return 0;
}

int negative_test(void)
{
    int error;
    unsigned int count;
    struct collection_item *ini_config = NULL;

    /* App name is null - expect failure */
    error = config_for_app(NULL, NULL, NULL, NULL, INI_STOP_ON_NONE, NULL);
    if (!error) {
        printf("Expected error: %d got success\n",EINVAL);
        return -1;
    }

    /* Config collection storage is NULL - expect failure */
    error = config_for_app("real", NULL, NULL, NULL, INI_STOP_ON_NONE, NULL);
    if (!error) {
        printf("Expected error: %d got success\n",EINVAL);
        return -1;
    }

    /* Config collection storage is NULL - expect failure */
    error = config_for_app("real", "real.conf", NULL, NULL, INI_STOP_ON_NONE, NULL);
    if (!error) {
        printf("Expected error: %d got success\n",EINVAL);
        return -1;
    }

    /* Expect success but empty config */
    error = config_for_app("real", "real.conf", NULL, &ini_config, INI_STOP_ON_NONE, NULL);
    if (error) {
        printf("Expected success got error: %d\n",error);
        return error;
    }

    count = 0;
    (void)col_get_collection_count(ini_config, &count);
    if (count > 1) {
        printf("Expected empty collection but got contents with %d elements\n", count);
        col_print_collection(ini_config);
        return -1;
    }

    free_ini_config(ini_config);
    return 0;

}

int real_test(const char *file)
{
    int error;
    struct collection_item *ini_config = NULL;
    struct collection_item *error_set = NULL;
    struct collection_iterator *iterator = NULL;
    struct collection_item *item = NULL;
    int type;

    printf("\n\n===== REAL TEST START ======\n");
    printf("Reading collection\n");
    error = config_for_app("real", file, "./ini.d",
                           &ini_config, INI_STOP_ON_NONE, &error_set);
    if (error) {
        printf("Attempt to read configuration returned error: %d\n", error);
        return error;
    }

    printf("Debugging the config collection:\n");
    col_debug_collection(ini_config, COL_TRAVERSE_DEFAULT);
    printf("Debugging the error collection:\n");
    col_debug_collection(error_set, COL_TRAVERSE_DEFAULT);

    printf("About to print parsing errors:\n");
    printf("\n\n----------------------\n");
    /* Output parsing errors (if any) */
    print_config_parsing_errors(stdout, error_set);
    printf("----------------------\n\n\n");

    printf("About to bind iterator to print the config file contents.\n");
    /* Bind iterator */
    error =  col_bind_iterator(&iterator, ini_config,
                           COL_TRAVERSE_DEFAULT|COL_TRAVERSE_END);
    if (error) {
        printf("Failed to bind iterator: %d\n",error);
        col_destroy_collection(ini_config);
        col_destroy_collection(error_set);
        return error;
    }

    printf("About to start iteration loop.\n");
    do {
        /* Loop through a collection */
        error = col_iterate_collection(iterator, &item);
        if (error) {
            printf("Error iterating collection: %d", error);
            col_unbind_iterator(iterator);
            return error;
        }

        /* Are we done ? */
        if (item == NULL) break;

        type = col_get_item_type(item);

        /* Start of the collection */
        if (type == COL_TYPE_COLLECTION)
            printf("Contents of the configuration for application %s\n", col_get_item_property(item, NULL));
        /* End of section */
        else if (type == COL_TYPE_END) printf("\n");
        /* Section header ? */
        else if (type == COL_TYPE_COLLECTIONREF) printf("[%s]\n", col_get_item_property(item, NULL));
        /* Anything else - we know they are all strings*/
        else printf("%s = %s\n", col_get_item_property(item, NULL), (char *)col_get_item_data(item));
    }
    while(1);

    /* Do not forget to unbind iterator - otherwise there will be a leak */
    printf("About to clean up.\n");
    col_unbind_iterator(iterator);

    free_ini_config(ini_config);
    free_ini_config_errors(error_set);
    return 0;
}

int get_test(void)
{

    int error;
    struct collection_item *ini_config = NULL;
    struct collection_item *error_set = NULL;
    struct collection_item *item = NULL;
    int number;
    long number_long;
    double number_double;
    unsigned number_unsigned;
    unsigned long number_ulong;
    unsigned char logical;
    char *str;
    const char *cstr;
    const char *cstrn;
    void *binary;
    int length;
    int i;
    char **strarray;
    char **strptr;
    int size;
    long *array;
    double *darray;
    char **prop_array;

    printf("\n\n===== GET TEST START ======\n");
    printf("Reading collection\n");
    error = config_for_app("real", NULL, "./ini.d",
                           &ini_config, INI_STOP_ON_NONE, &error_set);
    if (error) {
        printf("Attempt to read configuration returned error: %d\n", error);
        return error;
    }

    printf("Debugging the config collection:\n");
    col_debug_collection(ini_config, COL_TRAVERSE_DEFAULT);
    printf("Debugging the error collection:\n");
    col_debug_collection(error_set, COL_TRAVERSE_DEFAULT);
    free_ini_config_errors(error_set);

    printf("Negtive test - trying to get non existing key-value pair.\n");

    /* Negative test */
    item = NULL;
    error = get_config_item("monitor1", "description1", ini_config, &item);
    if (error) {
        printf("Expected success but got error! %d\n", error);
        free_ini_config(ini_config);
        return error;
    }

    /* Item should not be found */
    if (item != NULL) {
        printf("Expected NULL but got something else!\n");
        free_ini_config(ini_config);
        return -1;
    }

    /* Another negative test but section exists this time */
    item = NULL;
    error = get_config_item("monitor", "description1", ini_config, &item);
    if (error) {
        printf("Expected success but got error! %d\n", error);
        free_ini_config(ini_config);
        return error;
    }

    /* Item should not be found */
    if(item != NULL) {
        printf("Expected NULL but got something else!\n");
        free_ini_config(ini_config);
        return -1;
    }

    printf("Trying to get an item.\n");

    /* Positive test */
    item = NULL;
    error = get_config_item("monitor", "description", ini_config, &item);
    if (error) {
        printf("Expected success but got error! %d\n", error);
        free_ini_config(ini_config);
        return error;
    }

    /* Item should be found */
    if (item == NULL) {
        printf("Expected item but got something NULL!\n");
        free_ini_config(ini_config);
        return -1;
    }

    col_debug_item(item);

    printf("Get item as string without duplication from NULL item.\n");

    /* Get a string without duplicication */
    /* Negative test */
    cstrn = get_const_string_config_value(NULL, NULL);
    if (cstrn != NULL) {
        printf("Expected error got success.\n");
        free_ini_config(ini_config);
        return -1;
    }

    printf("Get item as string without duplication from correct item.\n");

    /* Now get string from the right item */
    error = 0;
    cstr = get_const_string_config_value(item, &error);
    if (error) {
        printf("Expected success got error %d.\n", error);
        free_ini_config(ini_config);
        return error;
    }

    printf("Value: [%s]\n", cstr);

    /* Same thing but create a dup */

    printf("Get item as string with duplication from correct item.\n");

    error = 0;
    str = get_string_config_value(item, &error);
    if (error) {
        printf("Expected success got error %d.\n", error);
        free_ini_config(ini_config);
        return error;
    }

    printf("Value: [%s]\n", str);
    free(str);


    /* Get a badly formated number */
    printf("Convert item to number with strict conversion.\n");

    item = NULL;
    error = get_config_item("monitor", "bad_number", ini_config, &item);
    if (error) {
        printf("Expected success but got error! %d\n", error);
        free_ini_config(ini_config);
        return error;
    }

    /* Item should be found */
    if (item == NULL) {
        printf("Expected item but got something NULL!\n");
        free_ini_config(ini_config);
        return -1;
    }

    col_debug_item(item);


    /* Now try to get value in different ways */
    error = 0;
    number = get_int_config_value(item, 1, 10, &error);
    if (error) {
        /* We expected error in this case */
        printf("Expected error.\n");
        if(number != 10) {
            printf("It failed to set default value.\n");
            free_ini_config(ini_config);
            return -1;
        }
    }

    printf("Convert item to number without strict conversion.\n");

    error = 0;
    number = 1;
    number = get_int_config_value(item, 0, 10, &error);
    if (error) {
        /* We expected error in this case */
        printf("Did not expect error.\n");
        free_ini_config(ini_config);
        return error;
    }

    if (number != 5) {
        /* We expected error in this case */
        printf("We expected that the conversion will return 5.\n");
        free_ini_config(ini_config);
        return -1;
    }

    /* Get real integer */

    printf("Fetch another item from section \"domains/LOCAL\" named \"enumerate\".\n");

    item = NULL;
    error = get_config_item("domains/LOCAL","enumerate", ini_config, &item);
    if (error) {
        printf("Expected success but got error! %d\n", error);
        free_ini_config(ini_config);
        return error;
    }

    /* Item should be found */
    if (item == NULL) {
        printf("Expected success but got NULL.\n");
        free_ini_config(ini_config);
        return -1;
    }

    printf("Convert item to integer.\n");

    /* Take number out of it */
    error = 0;
    number = get_int_config_value(item, 1, 100, &error);
    if (error) {
        printf("Did not expect error. Got %d\n", error);
        free_ini_config(ini_config);
        return error;
    }

    /* It is 3 in the file */
    if (number != 3) {
        printf("We expected that the conversion will return 3.\n");
        free_ini_config(ini_config);
        return -1;
    }

    printf("Expected 3 got %d\n", number);

    printf("Convert item to long.\n");

    /* Take number out of it */
    error = 0;
    number_long = get_long_config_value(item, 1, 100, &error);
    if (error) {
        printf("Did not expect error. Got %d\n", error);
        free_ini_config(ini_config);
        return error;
    }

    /* It is 3 in the file */
    if (number_long != 3) {
        printf("We expected that the conversion will return 3.\n");
        free_ini_config(ini_config);
        return -1;
    }

    printf("Expected 3 got %ld\n", number_long);

    printf("Convert item to unsigned.\n");

    /* Take number out of it */
    error = 0;
    number_unsigned = get_unsigned_config_value(item, 1, 100, &error);
    if (error) {
        printf("Did not expect error. Got %d\n", error);
        free_ini_config(ini_config);
        return error;
    }

    /* It is 3 in the file */
    if(number_unsigned != 3) {
        printf("We expected that the conversion will return 3.\n");
        free_ini_config(ini_config);
        return -1;
    }

    printf("Expected 3 got %d\n", number_unsigned);

    printf("Convert item to unsigned long.\n");

    /* Take number out of it */
    error = 0;
    number_ulong = get_ulong_config_value(item, 1, 100, &error);
    if (error) {
        printf("Did not expect error. Got %d\n", error);
        free_ini_config(ini_config);
        return error;
    }

    /* It is 3 in the file */
    if (number_ulong != 3) {
        printf("We expected that the conversion will return 3.\n");
        free_ini_config(ini_config);
        return -1;
    }

    printf("Expected 3 got %lu\n", number_ulong);

    printf("Convert item to double.\n");

    /* Take number out of it */
    error = 0;
    number_double = get_double_config_value(item, 1, 100., &error);
    if (error) {
        printf("Did not expect error. Got %d\n", error);
        free_ini_config(ini_config);
        return error;
    }

    /* It is 3 in the file */
    if (number_double != 3.) {
        printf("We expected that the conversion will return 3.\n");
        free_ini_config(ini_config);
        return -1;
    }

    printf("Expected 3 got %e\n", number_double);

    printf("Convert item to bool.\n");

    /* Take number out of it */
    error = 0;
    logical = get_bool_config_value(item, 1, &error);
    if (!error) {
        printf("Expect error. Got success.\n");
        free_ini_config(ini_config);
        return -1;
    }

    /* Get real bool item and convert it */
    printf("Get real bool item \"legacy\" and convert it.\n");

    item = NULL;
    error = get_config_item("domains/LOCAL","legacy", ini_config, &item);
    if (error) {
        printf("Expected success but got error! %d\n",error);
        free_ini_config(ini_config);
        return error;
    }

    /* Item should be found */
    if (item == NULL) {
        printf("Expected success but got NULL.\n");
        free_ini_config(ini_config);
        return -1;
    }

    printf("Convert item to bool.\n");

    error = 0;
    logical = get_bool_config_value(item, 1, &error);
    if (error) {
        printf("Expect success got error %d.\n", error);
        free_ini_config(ini_config);
        return error;
    }

    if (logical) {
        printf("Expected false but got true - bad.\n");
        return -1;
    }

    printf("In the files it is FALSE so we got false.\n");

    printf("Get binary item\n");

    item = NULL;
    error = get_config_item("domains/EXAMPLE.COM","binary_test", ini_config, &item);
    if (error) {
        printf("Expected success but got error! %d\n", error);
        free_ini_config(ini_config);
        return error;
    }

    /* Item should be found */
    if (item == NULL) {
        printf("Expected success but got NULL.\n");
        free_ini_config(ini_config);
        return -1;
    }

    col_debug_item(item);

    error = 0;
    binary = get_bin_config_value(item, &length, &error);
    if (error) {
        printf("Expect success got error %d.\n", error);
        free_ini_config(ini_config);
        return error;
    }

    printf("Binary value (expect 123) = ");
    for (i=0;i<length;i++) {
        printf("%d",*((unsigned char*)(binary)+i));
    }
    printf("\n");

    free_bin_config_value(binary);

    printf("Get string array item\n");

    item = NULL;
    error = get_config_item("domains", "domainsorder", ini_config, &item);
    if(error) {
        printf("Expected success but got error! %d\n",error);
        free_ini_config(ini_config);
        return error;
    }

    /* Item should be found */
    if (item == NULL) {
        printf("Expected success but got NULL.\n");
        free_ini_config(ini_config);
        return -1;
    }

    col_debug_item(item);

    printf("Get str array without size.\n");

    error = 0;
    strarray = get_string_config_array(item, ",", NULL, &error);
    if (error) {
        printf("Expect success got error %d.\n", error);
        free_ini_config(ini_config);
        return error;
    }

    /* Can be used with this cycle */
    strptr = strarray;
    while (*strptr != NULL) {
        printf("[%s]\n",*strptr);
        strptr++;
    }

    free_string_config_array(strarray);

    printf("Get raw str array without size.\n");

    error = 0;
    strarray = get_raw_string_config_array(item, ",", NULL, &error);
    if (error) {
        printf("Expect success got error %d.\n", error);
        free_ini_config(ini_config);
        return error;
    }

    /* Can be used with this cycle */
    strptr = strarray;
    while (*strptr != NULL) {
        printf("[%s]\n",*strptr);
        strptr++;
    }

    free_string_config_array(strarray);

    printf("Get str array with size.\n");

    error = 0;
    size = 0;
    strarray = get_string_config_array(item, ",", &size, &error);
    if (error) {
        printf("Expect success got error %d.\n", error);
        free_ini_config(ini_config);
        return error;
    }

    /* Can be used with this cycle */
    for (i=0;i<size;i++) printf("[%s]\n",*(strarray + i));

    free_string_config_array(strarray);

    printf("Get raw str array with size.\n");

    error = 0;
    size = 0;
    strarray = get_raw_string_config_array(item, ",", &size, &error);
    if (error) {
        printf("Expect success got error %d.\n", error);
        free_ini_config(ini_config);
        return error;
    }

    /* Can be used with this cycle */
    for (i=0;i<size;i++) printf("[%s]\n",*(strarray + i));

    free_string_config_array(strarray);

    printf("Get long array item\n");

    item = NULL;
    error = get_config_item("domains/EXAMPLE.COM", "long_array", ini_config, &item);
    if(error) {
        printf("Expected success but got error! %d\n", error);
        free_ini_config(ini_config);
        return error;
    }

    /* Item should be found */
    if (item == NULL) {
        printf("Expected success but got NULL.\n");
        free_ini_config(ini_config);
        return -1;
    }

    col_debug_item(item);

    error = 0;
    size = 0; /* Here size is not optional!!! */
    array = get_long_config_array(item, &size, &error);
    if(error) {
        printf("Expect success got error %d.\n", error);
        free_ini_config(ini_config);
        return error;
    }

    /* Can be used with this cycle */
    for (i=0;i<size;i++) printf("%ld\n", *(array + i));

    free_long_config_array(array);

    printf("Get double array item\n");

    item = NULL;
    error = get_config_item("domains/EXAMPLE.COM", "double_array", ini_config, &item);
    if (error) {
        printf("Expected success but got error! %d\n", error);
        free_ini_config(ini_config);
        return error;
    }

    /* Item should be found */
    if (item == NULL) {
        printf("Expected success but got NULL.\n");
        free_ini_config(ini_config);
        return -1;
    }

    col_debug_item(item);

    error = 0;
    size = 0; /* Here size is not optional!!! */
    darray = get_double_config_array(item, &size, &error);
    if (error) {
        printf("Expect success got error %d.\n", error);
        free_ini_config(ini_config);
        return error;
    }

    /* Can be used with this cycle */
    for (i=0;i<size;i++) printf("%.4f\n", darray[i]);

    free_double_config_array(darray);

    printf("\n\nSection list - no size\n");

    /* Do not care about the error or size */
    prop_array = get_section_list(ini_config, NULL, NULL);
    if (prop_array == NULL) {
        printf("Expect success got error.\n");
        free_ini_config(ini_config);
        return -1;
    }

    i = 0;
    while (prop_array[i]) {
        printf("Section: [%s]\n", prop_array[i]);
        i++;
    }
    free_section_list(prop_array);

    printf("\n\nSection list - with size\n");

    /* Do not care about the error or size */
    prop_array = get_section_list(ini_config, &size, NULL);
    if (prop_array == NULL) {
        printf("Expect success got error.\n");
        free_ini_config(ini_config);
        return -1;
    }

    for (i=0;i<size;i++) printf("Section: [%s]\n", prop_array[i]);
    free_section_list(prop_array);

    printf("\n\nAttributes in the section - with size and error\n");

    /* Do not care about the error or size */
    prop_array = get_attribute_list(ini_config, "domains/EXAMPLE.COM", &size, &error);
    if (prop_array == NULL) {
        printf("Expect success got error.\n");
        free_ini_config(ini_config);
        return -1;
    }

    for (i=0;i<size;i++) printf("Attribute: [%s]\n", prop_array[i]);
    free_attribute_list(prop_array);

    free_ini_config(ini_config);
    printf("Done with get test!\n");
    return EOK;
}

int main(int argc, char *argv[])
{
    int error = EOK;
    char *srcdir = NULL;

    srcdir = getenv("srcdir");
    if(srcdir) {
        if(chdir(srcdir) != 0) {
            error = errno;
            printf("Failed to change directory, error %d\n", error);
            return error;
        }
    }

    if ((error = basic_test()) ||
        (error = single_file()) ||
        (error = single_fd()) ||
        (error = real_test(NULL)) ||
         /* This should result in merged configuration */
        (error = real_test("./ini.conf")) ||
        (error = get_test())) {
        printf("Test failed! Error %d.\n", error);
        return -1;
    }
    printf("Success!\n");
    return 0;
}