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misc:minor basic kunit tests

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basic kunit tests for misc minor

Signed-off-by: Vimal Agrawal <vimal.agrawal@sophos.com>
Reviewed-by: Dirk VanDerMerwe <dirk.vandermerwe@sophos.com>
Link: https://lore.kernel.org/r/20241021133926.23774-1-vimal.agrawal@sophos.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Vimal Agrawal 2024-10-21 13:39:26 +00:00 committed by Greg Kroah-Hartman
parent 6d04d2b554
commit 37df904332
3 changed files with 81 additions and 0 deletions

1
drivers/misc/Makefile

@ -22,6 +22,7 @@ obj-$(CONFIG_SENSORS_BH1770) += bh1770glc.o
obj-$(CONFIG_SENSORS_APDS990X) += apds990x.o
obj-$(CONFIG_ENCLOSURE_SERVICES) += enclosure.o
obj-$(CONFIG_KGDB_TESTS) += kgdbts.o
obj-$(CONFIG_TEST_MISC_MINOR) += misc_minor_kunit.o
obj-$(CONFIG_SGI_XP) += sgi-xp/
obj-$(CONFIG_SGI_GRU) += sgi-gru/
obj-$(CONFIG_SMPRO_ERRMON) += smpro-errmon.o

69
drivers/misc/misc_minor_kunit.c Normal file

@ -0,0 +1,69 @@
// SPDX-License-Identifier: GPL-2.0
#include <kunit/test.h>
#include <kunit/test-bug.h>
#include <linux/module.h>
#include <linux/miscdevice.h>
/* dynamic minor (2) */
static struct miscdevice dev_dynamic_minor = {
.minor = 2,
.name = "dev_dynamic_minor",
};
/* static minor (LCD_MINOR) */
static struct miscdevice dev_static_minor = {
.minor = LCD_MINOR,
.name = "dev_static_minor",
};
/* misc dynamic minor */
static struct miscdevice dev_misc_dynamic_minor = {
.minor = MISC_DYNAMIC_MINOR,
.name = "dev_misc_dynamic_minor",
};
static void kunit_dynamic_minor(struct kunit *test)
{
int ret;
ret = misc_register(&dev_dynamic_minor);
KUNIT_EXPECT_EQ(test, 0, ret);
KUNIT_EXPECT_EQ(test, 2, dev_dynamic_minor.minor);
misc_deregister(&dev_dynamic_minor);
}
static void kunit_static_minor(struct kunit *test)
{
int ret;
ret = misc_register(&dev_static_minor);
KUNIT_EXPECT_EQ(test, 0, ret);
KUNIT_EXPECT_EQ(test, LCD_MINOR, dev_static_minor.minor);
misc_deregister(&dev_static_minor);
}
static void kunit_misc_dynamic_minor(struct kunit *test)
{
int ret;
ret = misc_register(&dev_misc_dynamic_minor);
KUNIT_EXPECT_EQ(test, 0, ret);
misc_deregister(&dev_misc_dynamic_minor);
}
static struct kunit_case test_cases[] = {
KUNIT_CASE(kunit_dynamic_minor),
KUNIT_CASE(kunit_static_minor),
KUNIT_CASE(kunit_misc_dynamic_minor),
{}
};
static struct kunit_suite test_suite = {
.name = "misc_minor_test",
.test_cases = test_cases,
};
kunit_test_suite(test_suite);
MODULE_LICENSE("GPL");
MODULE_AUTHOR("Vimal Agrawal");
MODULE_DESCRIPTION("misc minor testing");

11
lib/Kconfig.debug

@ -2479,6 +2479,17 @@ config TEST_RHASHTABLE
config TEST_IDA
tristate "Perform selftest on IDA functions"
config TEST_MISC_MINOR
tristate "Basic misc minor Kunit test" if !KUNIT_ALL_TESTS
depends on KUNIT
default KUNIT_ALL_TESTS
help
Kunit test for the misc minor.
It tests misc minor functions for dynamic and misc dynamic minor.
This include misc_xxx functions
If unsure, say N.
config TEST_PARMAN
tristate "Perform selftest on priority array manager"
depends on PARMAN