Commit e0fa2ab3 authored by Rasmus Villemoes's avatar Rasmus Villemoes Committed by Andrew Morton
Browse files

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: default avatarRasmus Villemoes <linux@rasmusvillemoes.dk>
Cc: Andy Shevchenko <andy@kernel.org>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
parent 67fca000

lib/test_string.c

+33 −0
Original line number Diff line number Diff line
@@ -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: