KUnity configure the c unit test framework Unity (http://www.throwtheswitch.org/unity) for running the test cases in kernel space. Testoutputs will be "shown"" by printk

Add KUnity to a kernel module


# add KUnity and Unity source files
module-objs += lib/KUnity/src/kunity.o
module-objs += lib/KUnity/lib/Unity/src/unity.o

# include KUnity and Unity header
ccflags-y += -I<lib_path>/KUnity/src
ccflags-y += -I<lib_path>/KUnity/lib/Unity/src

# set the unity config by header file flag, which is provided by KUnity
ccflags-y += -DUNITY_INCLUDE_CONFIG_H

Write and Running test cases

mainly in the same kind like desripted here KUnity and Unity header, but the test functions have to use the KUNITY_TEST makro.

When a kunityy test should run, its nessarrry to add the prefix kunity_test_ to the test function name

#include <kunity.h>
// ... application includes
KUNITY_TEST(first_simple_test)
{
    TEST_ASSERT_EQUAL(1, 0);
}

// ... more tests

int module_init(void) {
    int result = 0;
    UNITY_BEGIN();
    RUN_TEST(kunity_test_first_simple_test);
    // ... call the other tests
    result = UNITY_END();
    if ( < 1) {
        // all tests was successful, startup module
        // ...
    }

    return -result;
}

For test runnig it can also use the kunity_test_runner_module