unit_number__scnprintf.c

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// SPDX-License-Identifier: GPL-2.0
#include <inttypes.h>
#include <linux/compiler.h>
#include <linux/types.h>
#include "tests.h"
#include "units.h"
#include "debug.h"

int test__unit_number__scnprint(struct test *t __maybe_unused, int subtest __maybe_unused)
{
    struct {
        u64      n;
        const char  *str;
    } test[] = {
        { 1,            "1B"    },
        { 10*1024,      "10K"   },
        { 20*1024*1024,     "20M"   },
        { 30*1024*1024*1024ULL, "30G"   },
        { 0,            "0B"    },
        { 0,            NULL    },
    };
    unsigned i = 0;

    while (test[i].str) {
        char buf[100];

        unit_number__scnprintf(buf, sizeof(buf), test[i].n);

        pr_debug("n %" PRIu64 ", str '%s', buf '%s'\n",
             test[i].n, test[i].str, buf);

        if (strcmp(test[i].str, buf))
            return TEST_FAIL;

        i++;
    }

    return TEST_OK;
}