is_printable_array.c

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// SPDX-License-Identifier: GPL-2.0
#include <linux/compiler.h>
#include <linux/kernel.h>
#include "tests.h"
#include "debug.h"
#include "print_binary.h"

int test__is_printable_array(struct test *test __maybe_unused, int subtest __maybe_unused)
{
    char buf1[] = { 'k', 'r', 4, 'v', 'a', 0 };
    char buf2[] = { 'k', 'r', 'a', 'v', 4, 0 };
    struct {
        char        *buf;
        unsigned int     len;
        int      ret;
    } t[] = {
        { (char *) "krava", sizeof("krava"),    1 },
        { (char *) "krava", sizeof("krava") - 1,    0 },
        { (char *) "",      sizeof(""),     1 },
        { (char *) "",      0,          0 },
        { NULL,         0,          0 },
        { buf1,         sizeof(buf1),       0 },
        { buf2,         sizeof(buf2),       0 },
    };
    unsigned int i;

    for (i = 0; i < ARRAY_SIZE(t); i++) {
        int ret;

        ret = is_printable_array((char *) t[i].buf, t[i].len);
        if (ret != t[i].ret) {
            pr_err("failed: test %u\n", i);
            return TEST_FAIL;
        }
    }

    return TEST_OK;
}