test_strn_eq
#define TEST_FL_strn_eq(a, b, n) test_strn_eq(file, line, #a, #b, a, n, b, n)
#define TEST_FL_strn2_eq(a, m, b, n) test_strn_eq(file, line, #a, #b, a, m, b, n)
int test_strn_eq(const char *file, int line, const char *, const char *,
#define TEST_strn_eq(a, b, n) test_strn_eq(__FILE__, __LINE__, #a, #b, a, n, b, n)
#define TEST_strn2_eq(a, m, b, n) test_strn_eq(__FILE__, __LINE__, #a, #b, a, m, b, n)