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lib/test_string.c: add strspn and strcspn tests 

Before refactoring strspn() and strcspn(), add some simple test cases.

Link: https://lkml.kernel.org/r/20220328224119.3003834-1-linux@rasmusvillemoes.dk
Signed-off-by: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Cc: Andy Shevchenko <andy@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
This commit is contained in:
Rasmus Villemoes 2022-04-29 14:38:00 -07:00 committed by akpm
parent 67fca000e1
commit e0fa2ab3fc
1 changed files with 33 additions and 0 deletions
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33
lib/test_string.c
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@ -179,6 +179,34 @@ static __init int strnchr_selftest(void)
return 0;
}
static __init int strspn_selftest(void)
{
static const struct strspn_test {
const char str[16];
const char accept[16];
const char reject[16];
unsigned a;
unsigned r;
} tests[] __initconst = {
{ "foobar", "", "", 0, 6 },
{ "abba", "abc", "ABBA", 4, 4 },
{ "abba", "a", "b", 1, 1 },
{ "", "abc", "abc", 0, 0},
};
const struct strspn_test *s = tests;
size_t i, res;
for (i = 0; i < ARRAY_SIZE(tests); ++i, ++s) {
res = strspn(s->str, s->accept);
if (res != s->a)
return 0x100 + 2*i;
res = strcspn(s->str, s->reject);
if (res != s->r)
return 0x100 + 2*i + 1;
}
return 0;
}
static __exit void string_selftest_remove(void)
{
}
@ -212,6 +240,11 @@ static __init int string_selftest_init(void)
if (subtest)
goto fail;
test = 6;
subtest = strspn_selftest();
if (subtest)
goto fail;
pr_info("String selftests succeeded\n");
return 0;
fail: