A change similar to what we might think about doing to Unity down the road.

proposed_test_interface.c

#include <stdio.h>

/* This stuff would be updated/added to unity. */
typedef struct {
  char * desc;
  char * file;
  int line;
} test_information_t;

#define TEST_INFO_NAME(x, y) test_info_ ## x ## _ ## y
#define TEST_INFO_NAME2(x, y) TEST_INFO_NAME(x, y)

#define TEST_FN_NAME(x, y) test_fn_ ## x ## _ ## y
#define TEST_FN_NAME2(x, y) TEST_FN_NAME(x, y)

#define TEST(fn, desc) \
  test_information_t TEST_INFO_NAME2(fn, __LINE__) = { \
    (desc), \
    (__FILE__), \
    (__LINE__), \
  }; \
  void TEST_FN_NAME2(fn, __LINE__)(void)


/* This is what a test declaration would look like. */
TEST(SomeFun, "this is a description "
              "it has multiple lines "
              "omg, that's cool. also "
              "it has spaces.") // This is the line on which the test is defined
{
  printf("i am a test\n");
}

int main(int argc, char * argv[])
{
  /* This is what a test runner would have to deal with. */
  printf("%s %d\n%s\n", test_info_SomeFun_29.file
                      , test_info_SomeFun_29.line
                      , test_info_SomeFun_29.desc);
  printf("OUTPUT<<<\n");
  /* Here's how a test runner would have to call the test. */
  test_fn_SomeFun_29();
  printf(">>>END OUTPUT\n");

  /* This is the output when running this file:
   *
   *    gcc t.c -o t && ./t
   *    t.c 29
   *    this is a description it has multiple lines omg, that's cool. also it has spaces.
   *    OUTPUT<<<
   *    i am a test
   *    >>>END OUTPUT
   */
  
  return 0;
}