diff options
author | Andy Shevchenko <andriy.shevchenko@linux.intel.com> | 2020-12-15 20:43:34 -0800 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2020-12-15 22:46:16 -0800 |
commit | 7546861a8c55f1d704a6cfd699b33a9e2dd8c021 (patch) | |
tree | c8f0fe3140bca750c71dbdfaebd542147ff2c9f3 /lib/cmdline_kunit.c | |
parent | 6b2b6b864684848f9deacb6d0faa00626860832e (diff) |
lib/cmdline_kunit: add a new test suite for cmdline API
Test get_option() for a starter which is provided by cmdline.c.
[akpm@linux-foundation.org: fix warning by constifying cmdline_test_values]
[andriy.shevchenko@linux.intel.com: type of expected returned values should be int]
Link: https://lkml.kernel.org/r/20201116104244.15472-1-andriy.shevchenko@linux.intel.com
[andriy.shevchenko@linux.intel.com: provide meaningful MODULE_LICENSE()]
Link: https://lkml.kernel.org/r/20201116104257.15527-1-andriy.shevchenko@linux.intel.com
Link: https://lkml.kernel.org/r/20201112180732.75589-6-andriy.shevchenko@linux.intel.com
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Cc: Shuah Khan <skhan@linuxfoundation.org>
Cc: Vitor Massaru Iha <vitor@massaru.org>
Cc: Mark Brown <broonie@kernel.org>
Cc: Brendan Higgins <brendanhiggins@google.com>
Cc: David Gow <davidgow@google.com>
Cc: Matti Vaittinen <matti.vaittinen@fi.rohmeurope.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'lib/cmdline_kunit.c')
-rw-r--r-- | lib/cmdline_kunit.c | 100 |
1 files changed, 100 insertions, 0 deletions
diff --git a/lib/cmdline_kunit.c b/lib/cmdline_kunit.c new file mode 100644 index 000000000000..550e7a47fd24 --- /dev/null +++ b/lib/cmdline_kunit.c @@ -0,0 +1,100 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Test cases for API provided by cmdline.c + */ + +#include <kunit/test.h> +#include <linux/kernel.h> +#include <linux/random.h> +#include <linux/string.h> + +static const char *cmdline_test_strings[] = { + "\"\"", "" , "=" , "\"-", "," , "-," , ",-" , "-" , + "+," , "--", ",,", "''" , "\"\",", "\",\"", "-\"\"", "\"", +}; + +static const int cmdline_test_values[] = { + 1, 1, 1, 1, 2, 3, 2, 3, + 1, 3, 2, 1, 1, 1, 3, 1, +}; + +static void cmdline_do_one_test(struct kunit *test, const char *in, int rc, int offset) +{ + const char *fmt = "Pattern: %s"; + const char *out = in; + int dummy; + int ret; + + ret = get_option((char **)&out, &dummy); + + KUNIT_EXPECT_EQ_MSG(test, ret, rc, fmt, in); + KUNIT_EXPECT_PTR_EQ_MSG(test, out, in + offset, fmt, in); +} + +static void cmdline_test_noint(struct kunit *test) +{ + unsigned int i = 0; + + do { + const char *str = cmdline_test_strings[i]; + int rc = 0; + int offset; + + /* Only first and leading '-' will advance the pointer */ + offset = !!(*str == '-'); + cmdline_do_one_test(test, str, rc, offset); + } while (++i < ARRAY_SIZE(cmdline_test_strings)); +} + +static void cmdline_test_lead_int(struct kunit *test) +{ + unsigned int i = 0; + char in[32]; + + do { + const char *str = cmdline_test_strings[i]; + int rc = cmdline_test_values[i]; + int offset; + + sprintf(in, "%u%s", get_random_int() % 256, str); + /* Only first '-' after the number will advance the pointer */ + offset = strlen(in) - strlen(str) + !!(rc == 2); + cmdline_do_one_test(test, in, rc, offset); + } while (++i < ARRAY_SIZE(cmdline_test_strings)); +} + +static void cmdline_test_tail_int(struct kunit *test) +{ + unsigned int i = 0; + char in[32]; + + do { + const char *str = cmdline_test_strings[i]; + /* When "" or "-" the result will be valid integer */ + int rc = strcmp(str, "") ? (strcmp(str, "-") ? 0 : 1) : 1; + int offset; + + sprintf(in, "%s%u", str, get_random_int() % 256); + /* + * Only first and leading '-' not followed by integer + * will advance the pointer. + */ + offset = rc ? strlen(in) : !!(*str == '-'); + cmdline_do_one_test(test, in, rc, offset); + } while (++i < ARRAY_SIZE(cmdline_test_strings)); +} + +static struct kunit_case cmdline_test_cases[] = { + KUNIT_CASE(cmdline_test_noint), + KUNIT_CASE(cmdline_test_lead_int), + KUNIT_CASE(cmdline_test_tail_int), + {} +}; + +static struct kunit_suite cmdline_test_suite = { + .name = "cmdline", + .test_cases = cmdline_test_cases, +}; +kunit_test_suite(cmdline_test_suite); + +MODULE_LICENSE("GPL"); |