file_tests.c

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#include "op_file.h"

#include <stdlib.h>
#include <unistd.h>
#include <stdio.h>
#include <string.h>
#include <limits.h>

static char * tests[][2] = {
    { "/usr/bin/../bin", "/usr/bin" },
    { "/../usr/bin/", "/usr/bin" },
    { "/../../usr/bin/", "/usr/bin" },
    { "/../../usr/bin/.", "/usr/bin" },
    { "/../../usr/bin/./", "/usr/bin" },
    { "/usr/./bin", "/usr/bin" },
    { "/usr/././bin", "/usr/bin" },
    { "/usr///", "/usr" },
    { "../", "/" },
    { "./", "/usr" },
    { ".", "/usr" },
    { "./../", "/" },
    { "bin/../bin/../", "/usr" },
    { "../../../../../", "/" },
    { "/usr/bin/../../..", "/" },
    { "/usr/bin/../../../", "/" },
    { "././.", "/usr" },
    /* POSIX namespace ignored by realpath(3) */
    { "//", "/" },
    { "//usr", "/usr" },
    { "///", "/" },
    { NULL, NULL },
};

int main(void)
{
    char tmp[PATH_MAX];
    size_t i = 0;

    if (chdir("/usr")) {
        fprintf(stderr, "chdir(\"/usr\") failed for %s\n", tests[i][0]);
        exit(EXIT_FAILURE);
    }

    while (tests[i][0]) {
        if (!realpath(tests[i][0], tmp)) {
            fprintf(stderr, "NULL return for %s\n", tests[i][0]);
            exit(EXIT_FAILURE);
        }

        if (strcmp(tmp, tests[i][1])) {
            fprintf(stderr, "%s does not match %s given %s\n",
                    tmp, tests[i][1], tests[i][0]);
            exit(EXIT_FAILURE);
        }
        ++i;
    }

    return EXIT_SUCCESS;
}