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lib/cmdline_kunit: add test case for memparse()

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Better late than never, now there is a long-awaited basic test for
'memparse()' which is provided by cmdline.c.

Link: https://lore.kernel.org/20260519172259.908980-5-dmantipov@yandex.ru
Signed-off-by: Dmitry Antipov <dmantipov@yandex.ru>
Suggested-by: Andy Shevchenko <andriy.shevchenko@intel.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@intel.com>
Cc: Albert Ou <aou@eecs.berkeley.edu>
Cc: Alexandre Ghiti <alex@ghiti.fr>
Cc: Ard Biesheuvel <ardb@kernel.org>
Cc: Charlie Jenkins <thecharlesjenkins@gmail.com>
Cc: Palmer Dabbelt <palmer@dabbelt.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
This commit is contained in:
Dmitry Antipov
2026-05-19 20:22:55 +03:00
committed by Andrew Morton
parent ab90fc1007
commit a535853b66
1 changed files with 56 additions and 0 deletions
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56
lib/tests/cmdline_kunit.c
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@@ -6,6 +6,7 @@
#include <kunit/test.h>
#include <linux/kernel.h>
#include <linux/random.h>
#include <linux/sizes.h>
#include <linux/string.h>
static const char *cmdline_test_strings[] = {
@@ -198,6 +199,60 @@ static void cmdline_test_next_arg_mixed_tokens(struct kunit *test)
KUNIT_EXPECT_STREQ(test, next, "");
}
struct cmdline_test_memparse_entry {
const char *input;
const char *unrecognized;
unsigned long long result;
};
static const struct cmdline_test_memparse_entry testdata[] = {
{ "0", "", 0ULL },
{ "1", "", 1ULL },
{ "a", "a", 0ULL },
{ "k", "k", 0ULL },
{ "E", "E", 0ULL },
{ "0xb", "", 11ULL },
{ "0xz", "x", 0ULL },
{ "1234", "", 1234ULL },
{ "04567", "", 2423ULL },
{ "0x9876", "", 39030LL },
{ "05678", "8", 375ULL },
{ "0xabcdefz", "z", 11259375ULL },
{ "0cdba", "c", 0ULL },
{ "4K", "", SZ_4K },
{ "0x10k@0xaaaabbbb", "@", SZ_16K },
{ "32M", "", SZ_32M },
{ "067m:foo", ":", 55 * SZ_1M },
{ "2G;bar=baz", ";", SZ_2G },
{ "07gz", "z", 7ULL * SZ_1G },
{ "3T+data", "+", 3 * SZ_1T },
{ "04t,ro", ",", SZ_4T },
{ "012p", "", 11258999068426240ULL },
{ "7P,sync", ",", 7881299347898368ULL },
{ "0x2e", "", 46ULL },
{ "2E and more", " ", 2305843009213693952ULL },
{ "18446744073709551615", "", ULLONG_MAX },
{ "0xffffffffffffffff0", "", ULLONG_MAX },
{ "1111111111111111111T", "", ULLONG_MAX },
{ "222222222222222222222G", "", ULLONG_MAX },
{ "3333333333333333333333M", "", ULLONG_MAX },
};
static void cmdline_test_memparse(struct kunit *test)
{
const struct cmdline_test_memparse_entry *e;
unsigned long long ret;
char *retptr;
for (e = testdata; e < testdata + ARRAY_SIZE(testdata); e++) {
ret = memparse(e->input, &retptr);
KUNIT_EXPECT_EQ_MSG(test, ret, e->result,
" when parsing '%s'", e->input);
KUNIT_EXPECT_EQ_MSG(test, *retptr, *e->unrecognized,
" when parsing '%s'", e->input);
}
}
static struct kunit_case cmdline_test_cases[] = {
KUNIT_CASE(cmdline_test_noint),
KUNIT_CASE(cmdline_test_lead_int),
@@ -206,6 +261,7 @@ static struct kunit_case cmdline_test_cases[] = {
KUNIT_CASE(cmdline_test_next_arg_quoted_value),
KUNIT_CASE(cmdline_test_next_arg_bare_quote_regression),
KUNIT_CASE(cmdline_test_next_arg_mixed_tokens),
KUNIT_CASE(cmdline_test_memparse),
{}
};