Commit 403ff8fd authored by Aditya Garg's avatar Aditya Garg Committed by Alyssa Rosenzweig
Browse files

printf: add tests for generic FourCCs 



This patch adds support for kunit tests of generic 32-bit FourCCs added to
vsprintf.

Acked-by: default avatarTamir Duberstein <tamird@gmail.com>
Reviewed-by: default avatarAndy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: default avatarPetr Mladek <pmladek@suse.com>
Tested-by: default avatarPetr Mladek <pmladek@suse.com>
Signed-off-by: default avatarAditya Garg <gargaditya08@live.com>
Reviewed-by: default avatarKees Cook <kees@kernel.org>
Link: https://lore.kernel.org/r/PN3PR01MB95973AF4F6262B2D1996FB25B8B52@PN3PR01MB9597.INDPRD01.PROD.OUTLOOK.COM


Signed-off-by: default avatarAlyssa Rosenzweig <alyssa@rosenzweig.io>
parent 1938479b

lib/tests/printf_kunit.c

+32 −7
Original line number Diff line number Diff line
@@ -701,21 +701,46 @@ static void fwnode_pointer(struct kunit *kunittest) 
	software_node_unregister_node_group(group);

}



struct fourcc_struct {

	u32 code;

	const char *str;

};



static void fourcc_pointer_test(struct kunit *kunittest, const struct fourcc_struct *fc,

				size_t n, const char *fmt)

{

	size_t i;



	for (i = 0; i < n; i++)

		test(fc[i].str, fmt, &fc[i].code);

}



static void fourcc_pointer(struct kunit *kunittest)

{

	struct {

		u32 code;

		char *str;

	} const try[] = {

	static const struct fourcc_struct try_cc[] = {

		{ 0x3231564e, "NV12 little-endian (0x3231564e)", },

		{ 0xb231564e, "NV12 big-endian (0xb231564e)", },

		{ 0x10111213, ".... little-endian (0x10111213)", },

		{ 0x20303159, "Y10  little-endian (0x20303159)", },

	};

	unsigned int i;

	static const struct fourcc_struct try_ch[] = {

		{ 0x41424344, "ABCD (0x41424344)", },

	};

	static const struct fourcc_struct try_cn[] = {

		{ 0x41424344, "DCBA (0x44434241)", },

	};

	static const struct fourcc_struct try_cl[] = {

		{ (__force u32)cpu_to_le32(0x41424344), "ABCD (0x41424344)", },

	};

	static const struct fourcc_struct try_cb[] = {

		{ (__force u32)cpu_to_be32(0x41424344), "ABCD (0x41424344)", },

	};



	for (i = 0; i < ARRAY_SIZE(try); i++)

		test(try[i].str, "%p4cc", &try[i].code);

	fourcc_pointer_test(kunittest, try_cc, ARRAY_SIZE(try_cc), "%p4cc");

	fourcc_pointer_test(kunittest, try_ch, ARRAY_SIZE(try_ch), "%p4ch");

	fourcc_pointer_test(kunittest, try_cn, ARRAY_SIZE(try_cn), "%p4cn");

	fourcc_pointer_test(kunittest, try_cl, ARRAY_SIZE(try_cl), "%p4cl");

	fourcc_pointer_test(kunittest, try_cb, ARRAY_SIZE(try_cb), "%p4cb");

}



static void