C Unit Testing with cmocka

Ingredients

C compiler
cmocka

Bake Time

10 min

Instructions

Create a new file called test.c. This will be a simple src file to create a basic test.

#include <stdarg.h>
#include <stddef.h>
#include <setjmp.h>
#include <cmocka.h>

static void failing_test() {
	assert_false(1 != 2);
}

int main(void) {
	const struct CMUnitTest tests[] = {
		cmocka_unit_test(failing_test),
	};
	return cmocka_run_group_tests(tests, NULL, NULL);
}

Build your tests

$ gcc -o test test.c -l cmocka -L /usr/local/lib

Run your tests

$ ./test

Using a Makefile

buildTests : createBuildDir
	gcc -o build/test test.c -l cmocka -L /usr/local/lib

createBuildDir :
	mkdir -p build

test :
	./build/test

clean :
	rm -Rf build

Test Cookbook

C Unit Testing with cmocka