Convert the scanf() self-test to a KUnit test.

In the interest of keeping the patch reasonably-sized this doesn't refactor the tests into proper parameterized tests - it's all one big test case.

Acked-by: Petr Mladek pmladek@suse.com Reviewed-by: David Gow davidgow@google.com Signed-off-by: Tamir Duberstein tamird@gmail.com --- MAINTAINERS | 2 +- lib/Kconfig.debug | 12 +- lib/Makefile | 2 +- lib/{test_scanf.c => scanf_kunit.c} | 228 ++++++++++++++++------------------- tools/testing/selftests/lib/Makefile | 2 +- tools/testing/selftests/lib/config | 1 - tools/testing/selftests/lib/scanf.sh | 4 - 7 files changed, 118 insertions(+), 133 deletions(-)

diff --git a/MAINTAINERS b/MAINTAINERS index 25c86f47353d..ab1d90c66c02 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -25411,8 +25411,8 @@ R: Sergey Senozhatsky senozhatsky@chromium.org S: Maintained T: git git://git.kernel.org/pub/scm/linux/kernel/git/printk/linux.git F: Documentation/core-api/printk-formats.rst +F: lib/scanf_kunit.c F: lib/test_printf.c -F: lib/test_scanf.c F: lib/vsprintf.c

VT1211 HARDWARE MONITOR DRIVER diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug index 1af972a92d06..d35b60203856 100644 --- a/lib/Kconfig.debug +++ b/lib/Kconfig.debug @@ -2427,6 +2427,15 @@ config ASYNC_RAID6_TEST config TEST_HEXDUMP tristate "Test functions located in the hexdump module at runtime"

+config SCANF_KUNIT_TEST + tristate "KUnit test scanf() family of functions at runtime" if !KUNIT_ALL_TESTS + depends on KUNIT + default KUNIT_ALL_TESTS + help + Enable this option to test the scanf functions at boot. + + If unsure, say N. + config STRING_KUNIT_TEST tristate "KUnit test string functions at runtime" if !KUNIT_ALL_TESTS depends on KUNIT @@ -2443,9 +2452,6 @@ config TEST_KSTRTOX config TEST_PRINTF tristate "Test printf() family of functions at runtime"

-config TEST_SCANF - tristate "Test scanf() family of functions at runtime" - config TEST_BITMAP tristate "Test bitmap_*() family of functions at runtime" help diff --git a/lib/Makefile b/lib/Makefile index d5cfc7afbbb8..6bdf2287878d 100644 --- a/lib/Makefile +++ b/lib/Makefile @@ -85,7 +85,7 @@ obj-$(CONFIG_TEST_STATIC_KEYS) += test_static_keys.o obj-$(CONFIG_TEST_STATIC_KEYS) += test_static_key_base.o obj-$(CONFIG_TEST_DYNAMIC_DEBUG) += test_dynamic_debug.o obj-$(CONFIG_TEST_PRINTF) += test_printf.o -obj-$(CONFIG_TEST_SCANF) += test_scanf.o +obj-$(CONFIG_SCANF_KUNIT_TEST) += scanf_kunit.o

obj-$(CONFIG_TEST_BITMAP) += test_bitmap.o ifeq ($(CONFIG_CC_IS_CLANG)$(CONFIG_KASAN),yy) diff --git a/lib/test_scanf.c b/lib/scanf_kunit.c similarity index 81% rename from lib/test_scanf.c rename to lib/scanf_kunit.c index 44f8508c9d88..dfd29b103053 100644 --- a/lib/test_scanf.c +++ b/lib/scanf_kunit.c @@ -3,10 +3,8 @@ * Test cases for sscanf facility. */

-#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt - +#include <kunit/test.h> #include <linux/bitops.h> -#include <linux/init.h> #include <linux/kernel.h> #include <linux/module.h> #include <linux/overflow.h> @@ -15,67 +13,49 @@ #include <linux/slab.h> #include <linux/string.h>

-#include "../tools/testing/selftests/kselftest_module.h" - #define BUF_SIZE 1024

-KSTM_MODULE_GLOBALS(); -static char *test_buffer __initdata; -static char *fmt_buffer __initdata; -static struct rnd_state rnd_state __initdata; +static char *test_buffer; +static char *fmt_buffer; +static struct rnd_state rnd_state;

-typedef int (*check_fn)(const void *check_data, const char *string, +typedef void (*check_fn)(struct kunit *test, const void *check_data, const char *string, const char *fmt, int n_args, va_list ap);

-static void __scanf(4, 6) __init -_test(check_fn fn, const void *check_data, const char *string, const char *fmt, +static void __scanf(5, 7) +_test(struct kunit *test, check_fn fn, const void *check_data, const char *string, const char *fmt, int n_args, ...) { va_list ap, ap_copy; int ret;

- total_tests++; - va_start(ap, n_args); va_copy(ap_copy, ap); ret = vsscanf(string, fmt, ap_copy); va_end(ap_copy);

if (ret != n_args) { - pr_warn("vsscanf("%s", "%s", ...) returned %d expected %d\n", - string, fmt, ret, n_args); - goto fail; + KUNIT_FAIL(test, "vsscanf("%s", "%s", ...) returned %d expected %d", + string, fmt, ret, n_args); + } else { + (*fn)(test, check_data, string, fmt, n_args, ap); }

- ret = (*fn)(check_data, string, fmt, n_args, ap); - if (ret) - goto fail; - - va_end(ap); - - return; - -fail: - failed_tests++; va_end(ap); }

#define _check_numbers_template(arg_fmt, expect, str, fmt, n_args, ap) \ do { \ - pr_debug(""%s", "%s" ->\n", str, fmt); \ + kunit_printk(KERN_DEBUG, test, ""%s", "%s" ->", str, fmt); \ for (; n_args > 0; n_args--, expect++) { \ typeof(*expect) got = *va_arg(ap, typeof(expect)); \ - pr_debug("\t" arg_fmt "\n", got); \ - if (got != *expect) { \ - pr_warn("vsscanf("%s", "%s", ...) expected " arg_fmt " got " arg_fmt "\n", \ - str, fmt, *expect, got); \ - return 1; \ - } \ + kunit_printk(KERN_DEBUG, test, "\t" arg_fmt, got); \ + KUNIT_EXPECT_EQ_MSG(test, got, *expect, \ + "vsscanf("%s", "%s", ...)", str, fmt); \ } \ - return 0; \ } while (0)

-static int __init check_ull(const void *check_data, const char *string, +static void check_ull(struct kunit *test, const void *check_data, const char *string, const char *fmt, int n_args, va_list ap) { const unsigned long long *pval = check_data; @@ -83,7 +63,7 @@ static int __init check_ull(const void *check_data, const char *string, _check_numbers_template("%llu", pval, string, fmt, n_args, ap); }

-static int __init check_ll(const void *check_data, const char *string, +static void check_ll(struct kunit *test, const void *check_data, const char *string, const char *fmt, int n_args, va_list ap) { const long long *pval = check_data; @@ -91,7 +71,7 @@ static int __init check_ll(const void *check_data, const char *string, _check_numbers_template("%lld", pval, string, fmt, n_args, ap); }

-static int __init check_ulong(const void *check_data, const char *string, +static void check_ulong(struct kunit *test, const void *check_data, const char *string, const char *fmt, int n_args, va_list ap) { const unsigned long *pval = check_data; @@ -99,7 +79,7 @@ static int __init check_ulong(const void *check_data, const char *string, _check_numbers_template("%lu", pval, string, fmt, n_args, ap); }

-static int __init check_long(const void *check_data, const char *string, +static void check_long(struct kunit *test, const void *check_data, const char *string, const char *fmt, int n_args, va_list ap) { const long *pval = check_data; @@ -107,7 +87,7 @@ static int __init check_long(const void *check_data, const char *string, _check_numbers_template("%ld", pval, string, fmt, n_args, ap); }

-static int __init check_uint(const void *check_data, const char *string, +static void check_uint(struct kunit *test, const void *check_data, const char *string, const char *fmt, int n_args, va_list ap) { const unsigned int *pval = check_data; @@ -115,7 +95,7 @@ static int __init check_uint(const void *check_data, const char *string, _check_numbers_template("%u", pval, string, fmt, n_args, ap); }

-static int __init check_int(const void *check_data, const char *string, +static void check_int(struct kunit *test, const void *check_data, const char *string, const char *fmt, int n_args, va_list ap) { const int *pval = check_data; @@ -123,7 +103,7 @@ static int __init check_int(const void *check_data, const char *string, _check_numbers_template("%d", pval, string, fmt, n_args, ap); }

-static int __init check_ushort(const void *check_data, const char *string, +static void check_ushort(struct kunit *test, const void *check_data, const char *string, const char *fmt, int n_args, va_list ap) { const unsigned short *pval = check_data; @@ -131,7 +111,7 @@ static int __init check_ushort(const void *check_data, const char *string, _check_numbers_template("%hu", pval, string, fmt, n_args, ap); }

-static int __init check_short(const void *check_data, const char *string, +static void check_short(struct kunit *test, const void *check_data, const char *string, const char *fmt, int n_args, va_list ap) { const short *pval = check_data; @@ -139,7 +119,7 @@ static int __init check_short(const void *check_data, const char *string, _check_numbers_template("%hd", pval, string, fmt, n_args, ap); }

-static int __init check_uchar(const void *check_data, const char *string, +static void check_uchar(struct kunit *test, const void *check_data, const char *string, const char *fmt, int n_args, va_list ap) { const unsigned char *pval = check_data; @@ -147,7 +127,7 @@ static int __init check_uchar(const void *check_data, const char *string, _check_numbers_template("%hhu", pval, string, fmt, n_args, ap); }

-static int __init check_char(const void *check_data, const char *string, +static void check_char(struct kunit *test, const void *check_data, const char *string, const char *fmt, int n_args, va_list ap) { const signed char *pval = check_data; @@ -156,7 +136,7 @@ static int __init check_char(const void *check_data, const char *string, }

/* Selection of interesting numbers to test, copied from test-kstrtox.c */ -static const unsigned long long numbers[] __initconst = { +static const unsigned long long numbers[] = { 0x0ULL, 0x1ULL, 0x7fULL, @@ -196,7 +176,7 @@ do { \ T result = ~expect_val; /* should be overwritten */ \ \ snprintf(test_buffer, BUF_SIZE, gen_fmt, expect_val); \ - _test(fn, &expect_val, test_buffer, "%" scan_fmt, 1, &result); \ + _test(test, fn, &expect_val, test_buffer, "%" scan_fmt, 1, &result);\ } while (0)

#define simple_numbers_loop(T, gen_fmt, scan_fmt, fn) \ @@ -214,7 +194,7 @@ do { \ } \ } while (0)

-static void __init numbers_simple(void) +static void numbers_simple(struct kunit *test) { simple_numbers_loop(unsigned long long, "%llu", "llu", check_ull); simple_numbers_loop(long long, "%lld", "lld", check_ll); @@ -267,14 +247,14 @@ static void __init numbers_simple(void) * the raw prandom*() functions (Not mathematically rigorous!!). * Variabilty of length and value is more important than perfect randomness. */ -static u32 __init next_test_random(u32 max_bits) +static u32 next_test_random(u32 max_bits) { u32 n_bits = hweight32(prandom_u32_state(&rnd_state)) % (max_bits + 1);

return prandom_u32_state(&rnd_state) & GENMASK(n_bits, 0); }

-static unsigned long long __init next_test_random_ull(void) +static unsigned long long next_test_random_ull(void) { u32 rand1 = prandom_u32_state(&rnd_state); u32 n_bits = (hweight32(rand1) * 3) % 64; @@ -311,7 +291,7 @@ do { \ * updating buf_pos and returning the number of characters appended. * On error buf_pos is not changed and return value is 0. */ -static int __init __printf(4, 5) +static int __printf(4, 5) append_fmt(char *buf, int *buf_pos, int buf_len, const char *val_fmt, ...) { va_list ap; @@ -333,7 +313,7 @@ append_fmt(char *buf, int *buf_pos, int buf_len, const char *val_fmt, ...) * Convenience function to append the field delimiter string * to both the value string and format string buffers. */ -static void __init append_delim(char *str_buf, int *str_buf_pos, int str_buf_len, +static void append_delim(char *str_buf, int *str_buf_pos, int str_buf_len, char *fmt_buf, int *fmt_buf_pos, int fmt_buf_len, const char *delim_str) { @@ -344,7 +324,7 @@ static void __init append_delim(char *str_buf, int *str_buf_pos, int str_buf_len #define test_array_8(fn, check_data, string, fmt, arr) \ do { \ BUILD_BUG_ON(ARRAY_SIZE(arr) != 8); \ - _test(fn, check_data, string, fmt, 8, \ + _test(test, fn, check_data, string, fmt, 8, \ &(arr)[0], &(arr)[1], &(arr)[2], &(arr)[3], \ &(arr)[4], &(arr)[5], &(arr)[6], &(arr)[7]); \ } while (0) @@ -398,7 +378,7 @@ do { \ test_array_8(fn, expect, test_buffer, fmt_buffer, result); \ } while (0)

-static void __init numbers_list_ll(const char *delim) +static void numbers_list_ll(struct kunit *test, const char *delim) { numbers_list_8(unsigned long long, "%llu", delim, "llu", check_ull); numbers_list_8(long long, "%lld", delim, "lld", check_ll); @@ -408,7 +388,7 @@ static void __init numbers_list_ll(const char *delim) numbers_list_8(long long, "0x%llx", delim, "lli", check_ll); }

-static void __init numbers_list_l(const char *delim) +static void numbers_list_l(struct kunit *test, const char *delim) { numbers_list_8(unsigned long, "%lu", delim, "lu", check_ulong); numbers_list_8(long, "%ld", delim, "ld", check_long); @@ -418,7 +398,7 @@ static void __init numbers_list_l(const char *delim) numbers_list_8(long, "0x%lx", delim, "li", check_long); }

-static void __init numbers_list_d(const char *delim) +static void numbers_list_d(struct kunit *test, const char *delim) { numbers_list_8(unsigned int, "%u", delim, "u", check_uint); numbers_list_8(int, "%d", delim, "d", check_int); @@ -428,7 +408,7 @@ static void __init numbers_list_d(const char *delim) numbers_list_8(int, "0x%x", delim, "i", check_int); }

-static void __init numbers_list_h(const char *delim) +static void numbers_list_h(struct kunit *test, const char *delim) { numbers_list_8(unsigned short, "%hu", delim, "hu", check_ushort); numbers_list_8(short, "%hd", delim, "hd", check_short); @@ -438,7 +418,7 @@ static void __init numbers_list_h(const char *delim) numbers_list_8(short, "0x%hx", delim, "hi", check_short); }

-static void __init numbers_list_hh(const char *delim) +static void numbers_list_hh(struct kunit *test, const char *delim) { numbers_list_8(unsigned char, "%hhu", delim, "hhu", check_uchar); numbers_list_8(signed char, "%hhd", delim, "hhd", check_char); @@ -448,16 +428,16 @@ static void __init numbers_list_hh(const char *delim) numbers_list_8(signed char, "0x%hhx", delim, "hhi", check_char); }

-static void __init numbers_list(const char *delim) +static void numbers_list(struct kunit *test, const char *delim) { - numbers_list_ll(delim); - numbers_list_l(delim); - numbers_list_d(delim); - numbers_list_h(delim); - numbers_list_hh(delim); + numbers_list_ll(test, delim); + numbers_list_l(test, delim); + numbers_list_d(test, delim); + numbers_list_h(test, delim); + numbers_list_hh(test, delim); }

-static void __init numbers_list_field_width_ll(const char *delim) +static void numbers_list_field_width_ll(struct kunit *test, const char *delim) { numbers_list_fix_width(unsigned long long, "%llu", delim, 20, "llu", check_ull); numbers_list_fix_width(long long, "%lld", delim, 20, "lld", check_ll); @@ -467,7 +447,7 @@ static void __init numbers_list_field_width_ll(const char *delim) numbers_list_fix_width(long long, "0x%llx", delim, 18, "lli", check_ll); }

-static void __init numbers_list_field_width_l(const char *delim) +static void numbers_list_field_width_l(struct kunit *test, const char *delim) { #if BITS_PER_LONG == 64 numbers_list_fix_width(unsigned long, "%lu", delim, 20, "lu", check_ulong); @@ -486,7 +466,7 @@ static void __init numbers_list_field_width_l(const char *delim) #endif }

-static void __init numbers_list_field_width_d(const char *delim) +static void numbers_list_field_width_d(struct kunit *test, const char *delim) { numbers_list_fix_width(unsigned int, "%u", delim, 10, "u", check_uint); numbers_list_fix_width(int, "%d", delim, 11, "d", check_int); @@ -496,7 +476,7 @@ static void __init numbers_list_field_width_d(const char *delim) numbers_list_fix_width(int, "0x%x", delim, 10, "i", check_int); }

-static void __init numbers_list_field_width_h(const char *delim) +static void numbers_list_field_width_h(struct kunit *test, const char *delim) { numbers_list_fix_width(unsigned short, "%hu", delim, 5, "hu", check_ushort); numbers_list_fix_width(short, "%hd", delim, 6, "hd", check_short); @@ -506,7 +486,7 @@ static void __init numbers_list_field_width_h(const char *delim) numbers_list_fix_width(short, "0x%hx", delim, 6, "hi", check_short); }

-static void __init numbers_list_field_width_hh(const char *delim) +static void numbers_list_field_width_hh(struct kunit *test, const char *delim) { numbers_list_fix_width(unsigned char, "%hhu", delim, 3, "hhu", check_uchar); numbers_list_fix_width(signed char, "%hhd", delim, 4, "hhd", check_char); @@ -520,16 +500,16 @@ static void __init numbers_list_field_width_hh(const char *delim) * List of numbers separated by delim. Each field width specifier is the * maximum possible digits for the given type and base. */ -static void __init numbers_list_field_width_typemax(const char *delim) +static void numbers_list_field_width_typemax(struct kunit *test, const char *delim) { - numbers_list_field_width_ll(delim); - numbers_list_field_width_l(delim); - numbers_list_field_width_d(delim); - numbers_list_field_width_h(delim); - numbers_list_field_width_hh(delim); + numbers_list_field_width_ll(test, delim); + numbers_list_field_width_l(test, delim); + numbers_list_field_width_d(test, delim); + numbers_list_field_width_h(test, delim); + numbers_list_field_width_hh(test, delim); }

-static void __init numbers_list_field_width_val_ll(const char *delim) +static void numbers_list_field_width_val_ll(struct kunit *test, const char *delim) { numbers_list_val_width(unsigned long long, "%llu", delim, "llu", check_ull); numbers_list_val_width(long long, "%lld", delim, "lld", check_ll); @@ -539,7 +519,7 @@ static void __init numbers_list_field_width_val_ll(const char *delim) numbers_list_val_width(long long, "0x%llx", delim, "lli", check_ll); }

-static void __init numbers_list_field_width_val_l(const char *delim) +static void numbers_list_field_width_val_l(struct kunit *test, const char *delim) { numbers_list_val_width(unsigned long, "%lu", delim, "lu", check_ulong); numbers_list_val_width(long, "%ld", delim, "ld", check_long); @@ -549,7 +529,7 @@ static void __init numbers_list_field_width_val_l(const char *delim) numbers_list_val_width(long, "0x%lx", delim, "li", check_long); }

-static void __init numbers_list_field_width_val_d(const char *delim) +static void numbers_list_field_width_val_d(struct kunit *test, const char *delim) { numbers_list_val_width(unsigned int, "%u", delim, "u", check_uint); numbers_list_val_width(int, "%d", delim, "d", check_int); @@ -559,7 +539,7 @@ static void __init numbers_list_field_width_val_d(const char *delim) numbers_list_val_width(int, "0x%x", delim, "i", check_int); }

-static void __init numbers_list_field_width_val_h(const char *delim) +static void numbers_list_field_width_val_h(struct kunit *test, const char *delim) { numbers_list_val_width(unsigned short, "%hu", delim, "hu", check_ushort); numbers_list_val_width(short, "%hd", delim, "hd", check_short); @@ -569,7 +549,7 @@ static void __init numbers_list_field_width_val_h(const char *delim) numbers_list_val_width(short, "0x%hx", delim, "hi", check_short); }

-static void __init numbers_list_field_width_val_hh(const char *delim) +static void numbers_list_field_width_val_hh(struct kunit *test, const char *delim) { numbers_list_val_width(unsigned char, "%hhu", delim, "hhu", check_uchar); numbers_list_val_width(signed char, "%hhd", delim, "hhd", check_char); @@ -583,13 +563,13 @@ static void __init numbers_list_field_width_val_hh(const char *delim) * List of numbers separated by delim. Each field width specifier is the * exact length of the corresponding value digits in the string being scanned. */ -static void __init numbers_list_field_width_val_width(const char *delim) +static void numbers_list_field_width_val_width(struct kunit *test, const char *delim) { - numbers_list_field_width_val_ll(delim); - numbers_list_field_width_val_l(delim); - numbers_list_field_width_val_d(delim); - numbers_list_field_width_val_h(delim); - numbers_list_field_width_val_hh(delim); + numbers_list_field_width_val_ll(test, delim); + numbers_list_field_width_val_l(test, delim); + numbers_list_field_width_val_d(test, delim); + numbers_list_field_width_val_h(test, delim); + numbers_list_field_width_val_hh(test, delim); }

/* @@ -598,9 +578,9 @@ static void __init numbers_list_field_width_val_width(const char *delim) * of digits. For example the hex values c0,3,bf01,303 would have a * string representation of "c03bf01303" and extracted with "%2x%1x%4x%3x". */ -static void __init numbers_slice(void) +static void numbers_slice(struct kunit *test) { - numbers_list_field_width_val_width(""); + numbers_list_field_width_val_width(test, ""); }

#define test_number_prefix(T, str, scan_fmt, expect0, expect1, n_args, fn) \ @@ -608,14 +588,14 @@ do { \ const T expect[2] = { expect0, expect1 }; \ T result[2] = { (T)~expect[0], (T)~expect[1] }; \ \ - _test(fn, &expect, str, scan_fmt, n_args, &result[0], &result[1]); \ + _test(test, fn, &expect, str, scan_fmt, n_args, &result[0], &result[1]);\ } while (0)

/* * Number prefix is >= field width. * Expected behaviour is derived from testing userland sscanf. */ -static void __init numbers_prefix_overflow(void) +static void numbers_prefix_overflow(struct kunit *test) { /* * Negative decimal with a field of width 1, should quit scanning @@ -684,25 +664,18 @@ do { \ T got; \ char *endp; \ int len; \ - bool fail = false; \ \ - total_tests++; \ len = snprintf(test_buffer, BUF_SIZE, gen_fmt, expect); \ got = (fn)(test_buffer, &endp, base); \ - pr_debug(#fn "("%s", %d) -> " gen_fmt "\n", test_buffer, base, got); \ + kunit_printk(KERN_DEBUG, test, #fn "("%s", %d) -> " gen_fmt, test_buffer, base, got); \ if (got != (expect)) { \ - fail = true; \ - pr_warn(#fn "("%s", %d): got " gen_fmt " expected " gen_fmt "\n", \ - test_buffer, base, got, expect); \ + KUNIT_FAIL(test, #fn "("%s", %d): got " gen_fmt " expected " gen_fmt, \ + test_buffer, base, got, expect); \ } else if (endp != test_buffer + len) { \ - fail = true; \ - pr_warn(#fn "("%s", %d) startp=0x%px got endp=0x%px expected 0x%px\n", \ - test_buffer, base, test_buffer, \ - test_buffer + len, endp); \ + KUNIT_FAIL(test, #fn "("%s", %d) startp=0x%px got endp=0x%px expected 0x%px", \ + test_buffer, base, test_buffer, \ + test_buffer + len, endp); \ } \ - \ - if (fail) \ - failed_tests++; \ } while (0)

#define test_simple_strtoxx(T, fn, gen_fmt, base) \ @@ -718,7 +691,7 @@ do { \ } \ } while (0)

-static void __init test_simple_strtoull(void) +static void test_simple_strtoull(struct kunit *test) { test_simple_strtoxx(unsigned long long, simple_strtoull, "%llu", 10); test_simple_strtoxx(unsigned long long, simple_strtoull, "%llu", 0); @@ -727,7 +700,7 @@ static void __init test_simple_strtoull(void) test_simple_strtoxx(unsigned long long, simple_strtoull, "0x%llx", 0); }

-static void __init test_simple_strtoll(void) +static void test_simple_strtoll(struct kunit *test) { test_simple_strtoxx(long long, simple_strtoll, "%lld", 10); test_simple_strtoxx(long long, simple_strtoll, "%lld", 0); @@ -736,7 +709,7 @@ static void __init test_simple_strtoll(void) test_simple_strtoxx(long long, simple_strtoll, "0x%llx", 0); }

-static void __init test_simple_strtoul(void) +static void test_simple_strtoul(struct kunit *test) { test_simple_strtoxx(unsigned long, simple_strtoul, "%lu", 10); test_simple_strtoxx(unsigned long, simple_strtoul, "%lu", 0); @@ -745,7 +718,7 @@ static void __init test_simple_strtoul(void) test_simple_strtoxx(unsigned long, simple_strtoul, "0x%lx", 0); }

-static void __init test_simple_strtol(void) +static void test_simple_strtol(struct kunit *test) { test_simple_strtoxx(long, simple_strtol, "%ld", 10); test_simple_strtoxx(long, simple_strtol, "%ld", 0); @@ -755,35 +728,35 @@ static void __init test_simple_strtol(void) }

/* Selection of common delimiters/separators between numbers in a string. */ -static const char * const number_delimiters[] __initconst = { +static const char * const number_delimiters[] = { " ", ":", ",", "-", "/", };

-static void __init test_numbers(void) +static void test_numbers(struct kunit *test) { int i;

/* String containing only one number. */ - numbers_simple(); + numbers_simple(test);

/* String with multiple numbers separated by delimiter. */ for (i = 0; i < ARRAY_SIZE(number_delimiters); i++) { - numbers_list(number_delimiters[i]); + numbers_list(test, number_delimiters[i]);

/* Field width may be longer than actual field digits. */ - numbers_list_field_width_typemax(number_delimiters[i]); + numbers_list_field_width_typemax(test, number_delimiters[i]);

/* Each field width exactly length of actual field digits. */ - numbers_list_field_width_val_width(number_delimiters[i]); + numbers_list_field_width_val_width(test, number_delimiters[i]); }

/* Slice continuous sequence of digits using field widths. */ - numbers_slice(); + numbers_slice(test);

- numbers_prefix_overflow(); + numbers_prefix_overflow(test); }

-static void __init selftest(void) +static void scanf_test(struct kunit *test) { test_buffer = kmalloc(BUF_SIZE, GFP_KERNEL); if (!test_buffer) @@ -797,18 +770,29 @@ static void __init selftest(void)

prandom_seed_state(&rnd_state, 3141592653589793238ULL);

- test_numbers(); + test_numbers(test);

- test_simple_strtoull(); - test_simple_strtoll(); - test_simple_strtoul(); - test_simple_strtol(); + test_simple_strtoull(test); + test_simple_strtoll(test); + test_simple_strtoul(test); + test_simple_strtol(test);

kfree(fmt_buffer); kfree(test_buffer); }

-KSTM_MODULE_LOADERS(test_scanf); +static struct kunit_case scanf_test_cases[] = { + KUNIT_CASE(scanf_test), + {} +}; + +static struct kunit_suite scanf_test_suite = { + .name = "scanf", + .test_cases = scanf_test_cases, +}; + +kunit_test_suite(scanf_test_suite); + MODULE_AUTHOR("Richard Fitzgerald rf@opensource.cirrus.com"); MODULE_DESCRIPTION("Test cases for sscanf facility"); MODULE_LICENSE("GPL v2"); diff --git a/tools/testing/selftests/lib/Makefile b/tools/testing/selftests/lib/Makefile index c52fe3ad8e98..4afda556151f 100644 --- a/tools/testing/selftests/lib/Makefile +++ b/tools/testing/selftests/lib/Makefile @@ -4,5 +4,5 @@ # No binaries, but make sure arg-less "make" doesn't trigger "run_tests" all:

-TEST_PROGS := printf.sh bitmap.sh prime_numbers.sh scanf.sh +TEST_PROGS := printf.sh bitmap.sh prime_numbers.sh include ../lib.mk diff --git a/tools/testing/selftests/lib/config b/tools/testing/selftests/lib/config index dc15aba8d0a3..80b55a504868 100644 --- a/tools/testing/selftests/lib/config +++ b/tools/testing/selftests/lib/config @@ -1,5 +1,4 @@ CONFIG_TEST_PRINTF=m -CONFIG_TEST_SCANF=m CONFIG_TEST_BITMAP=m CONFIG_PRIME_NUMBERS=m CONFIG_TEST_BITOPS=m diff --git a/tools/testing/selftests/lib/scanf.sh b/tools/testing/selftests/lib/scanf.sh deleted file mode 100755 index b59b8ba561c3..000000000000 --- a/tools/testing/selftests/lib/scanf.sh +++ /dev/null @@ -1,4 +0,0 @@ -#!/bin/sh -# SPDX-License-Identifier: GPL-2.0 -# Tests the scanf infrastructure using test_scanf kernel module. -$(dirname $0)/../kselftest/module.sh "scanf" test_scanf

Use `suite_init` and move some tests into `scanf_test_cases`. This gives us nicer output in the event of a failure.

Reviewed-by: David Gow davidgow@google.com Signed-off-by: Tamir Duberstein tamird@gmail.com --- lib/scanf_kunit.c | 98 +++++++++++++++++++++++++------------------------------ 1 file changed, 44 insertions(+), 54 deletions(-)

diff --git a/lib/scanf_kunit.c b/lib/scanf_kunit.c index dfd29b103053..cbbbcc1c88d2 100644 --- a/lib/scanf_kunit.c +++ b/lib/scanf_kunit.c @@ -4,19 +4,14 @@ */

#include <kunit/test.h> -#include <linux/bitops.h> -#include <linux/kernel.h> #include <linux/module.h> -#include <linux/overflow.h> -#include <linux/printk.h> #include <linux/prandom.h> -#include <linux/slab.h> -#include <linux/string.h> +#include <linux/sprintf.h>

#define BUF_SIZE 1024

-static char *test_buffer; -static char *fmt_buffer; +static char test_buffer[BUF_SIZE]; +static char fmt_buffer[BUF_SIZE]; static struct rnd_state rnd_state;

typedef void (*check_fn)(struct kunit *test, const void *check_data, const char *string, @@ -428,8 +423,11 @@ static void numbers_list_hh(struct kunit *test, const char *delim) numbers_list_8(signed char, "0x%hhx", delim, "hhi", check_char); }

-static void numbers_list(struct kunit *test, const char *delim) +static void numbers_list(struct kunit *test) { + const char * const *param = test->param_value; + const char *delim = *param; + numbers_list_ll(test, delim); numbers_list_l(test, delim); numbers_list_d(test, delim); @@ -500,8 +498,11 @@ static void numbers_list_field_width_hh(struct kunit *test, const char *delim) * List of numbers separated by delim. Each field width specifier is the * maximum possible digits for the given type and base. */ -static void numbers_list_field_width_typemax(struct kunit *test, const char *delim) +static void numbers_list_field_width_typemax(struct kunit *test) { + const char * const *param = test->param_value; + const char *delim = *param; + numbers_list_field_width_ll(test, delim); numbers_list_field_width_l(test, delim); numbers_list_field_width_d(test, delim); @@ -563,8 +564,11 @@ static void numbers_list_field_width_val_hh(struct kunit *test, const char *deli * List of numbers separated by delim. Each field width specifier is the * exact length of the corresponding value digits in the string being scanned. */ -static void numbers_list_field_width_val_width(struct kunit *test, const char *delim) +static void numbers_list_field_width_val_width(struct kunit *test) { + const char * const *param = test->param_value; + const char *delim = *param; + numbers_list_field_width_val_ll(test, delim); numbers_list_field_width_val_l(test, delim); numbers_list_field_width_val_d(test, delim); @@ -580,7 +584,12 @@ static void numbers_list_field_width_val_width(struct kunit *test, const char *d */ static void numbers_slice(struct kunit *test) { - numbers_list_field_width_val_width(test, ""); + const char *delim = ""; + + KUNIT_ASSERT_PTR_EQ(test, test->param_value, NULL); + test->param_value = &delim; + + numbers_list_field_width_val_width(test); }

#define test_number_prefix(T, str, scan_fmt, expect0, expect1, n_args, fn) \ @@ -732,62 +741,43 @@ static const char * const number_delimiters[] = { " ", ":", ",", "-", "/", };

-static void test_numbers(struct kunit *test) +static void number_delimiter_param_desc(const char * const *param, + char *desc) { - int i; + snprintf(desc, KUNIT_PARAM_DESC_SIZE, ""%s"", *param); +}

- /* String containing only one number. */ - numbers_simple(test); +KUNIT_ARRAY_PARAM(number_delimiters, number_delimiters, number_delimiter_param_desc);

+static struct kunit_case scanf_test_cases[] = { + KUNIT_CASE(numbers_simple), /* String with multiple numbers separated by delimiter. */ - for (i = 0; i < ARRAY_SIZE(number_delimiters); i++) { - numbers_list(test, number_delimiters[i]); - - /* Field width may be longer than actual field digits. */ - numbers_list_field_width_typemax(test, number_delimiters[i]); - - /* Each field width exactly length of actual field digits. */ - numbers_list_field_width_val_width(test, number_delimiters[i]); - } - + KUNIT_CASE_PARAM(numbers_list, number_delimiters_gen_params), + /* Field width may be longer than actual field digits. */ + KUNIT_CASE_PARAM(numbers_list_field_width_typemax, number_delimiters_gen_params), + /* Each field width exactly length of actual field digits. */ + KUNIT_CASE_PARAM(numbers_list_field_width_val_width, number_delimiters_gen_params), /* Slice continuous sequence of digits using field widths. */ - numbers_slice(test); + KUNIT_CASE(numbers_slice), + KUNIT_CASE(numbers_prefix_overflow),

- numbers_prefix_overflow(test); -} + KUNIT_CASE(test_simple_strtoull), + KUNIT_CASE(test_simple_strtoll), + KUNIT_CASE(test_simple_strtoul), + KUNIT_CASE(test_simple_strtol), + {} +};

-static void scanf_test(struct kunit *test) +static int scanf_suite_init(struct kunit_suite *suite) { - test_buffer = kmalloc(BUF_SIZE, GFP_KERNEL); - if (!test_buffer) - return; - - fmt_buffer = kmalloc(BUF_SIZE, GFP_KERNEL); - if (!fmt_buffer) { - kfree(test_buffer); - return; - } - prandom_seed_state(&rnd_state, 3141592653589793238ULL);

- test_numbers(test); - - test_simple_strtoull(test); - test_simple_strtoll(test); - test_simple_strtoul(test); - test_simple_strtol(test); - - kfree(fmt_buffer); - kfree(test_buffer); + return 0; }

-static struct kunit_case scanf_test_cases[] = { - KUNIT_CASE(scanf_test), - {} -}; - static struct kunit_suite scanf_test_suite = { .name = "scanf", + .suite_init = scanf_suite_init, .test_cases = scanf_test_cases, };