C unit testing framework

munit.c

#include <stdio.h>
#include "munit.h"

int mu_nfail=0;
int mu_ntest=0;
int mu_nassert=0;
static void test_foo(){
  int foo=7;
  mu_assert(foo==7);
  mu_assert(foo==0||foo==7);
}
static void test_bar() {
  int bar=4,fail=4;
  mu_assert(bar==4);
  mu_assert(fail==5);
}
static void test_hoge() {
  int hoge=7;
  mu_assert(hoge==7);
}
static void test_fuga() {
  int fuga=7;
  mu_assert(fuga==7);
}

int main(int argc, char **argv) {
  mu_run_test(test_foo);
  mu_run_test(test_bar);
  mu_run_test(test_hoge);
  mu_run_test(test_fuga);
  mu_show_failures();
  return mu_nfail!=0;
}

munit.h

#ifndef __munit_h__
#define __munit_h__
#include <stdio.h>
#define mu_failed(file,line,expr) fprintf(stderr,"%s:%u: failed assertion `%s'\n",file,line,expr)
#define mu_tested(test,passed) fprintf(stderr,"Test: %-10s ... %s\n",test,(passed)?"passed":"FAILED")
#define mu_assert(expr) do{mu_nassert++;if(!(expr)){++mu_nfail;mu_failed(__FILE__,__LINE__,#expr);}}while(0)
#define mu_run_test(test) do{int f=mu_nfail;++mu_ntest;test();mu_tested(#test,(f==mu_nfail));}while(0)
#define mu_show_failures() do{fprintf(stderr,"### Failed %d of %d asserts (%d tests).\n",mu_nfail,mu_nassert,mu_ntest);}while(0)
extern int mu_nfail;
extern int mu_ntest;
extern int mu_nassert;
#endif /* __munit_h__ */