munit is a minimalistic unit testing framework for C, less than 100 lines. It is not meant to be fully featured, but it is meant to be as minimal as possible. The work is heavily based on John Brewer's minunit. The only real difference is that munit does not block if a tests fails, but John Brewer's minunit does.


static int tests = 0;
static int passed = 0;
static int failed = 0;

#define mu_assert(test, message)
#define mu_check(test)
#define mu_add_test(test)
#define mu_report()
#define mu_run_tests(TEST_SUITE)


Have a look at the example code in below, it is fairly trivial and intuitive (I hope).

#include <stdio.h>

#include "cog.h"

/* TEST VARIABLES (For this test!) */
int foo = 6;
int bar = 5;

int test_foo()
    mu_assert(foo == 7, "Error! foo != 7");
    return 0;

int test_bar()
    mu_check(bar == 5);
    return 0;

void test_suite() {

// NOTE: mu_report() does not require the trailing smei-colon ";"

The above is simply a test to see if foo and bar is 6 and 5. If not then the error message for the corresponding assert will be displayed. With munit we provide two assert functions mu_assert() and mu_check() both are essentially the same except with mu_check() you do not have to specify the error message in the case of a failed test.

An example output of the above test is as follows:

2 tests, 2 assertions, 0 failures