add Mrbtest::FIXNUM_{MAX,MIN,BIT}

test/driver.c

@@ -87,6 +87,7 @@ main(int argc, char **argv)
 {
   mrb_state *mrb;
   struct RClass *krn;
+  struct RClass *mrbtest;
   int ret;
 
   print_hint();
@@ -106,6 +107,18 @@ main(int argc, char **argv)
   krn = mrb->kernel_module;
   mrb_define_method(mrb, krn, "__t_printstr__", mrb_t_printstr, MRB_ARGS_REQ(1));
 
+  mrbtest = mrb_define_module(mrb, "Mrbtest");
+
+#ifdef MRB_WORD_BOXING
+  mrb_define_const(mrb, mrbtest, "FIXNUM_MAX", mrb_fixnum_value(MRB_INT_MAX >> MRB_FIXNUM_SHIFT));
+  mrb_define_const(mrb, mrbtest, "FIXNUM_MIN", mrb_fixnum_value(MRB_INT_MIN >> MRB_FIXNUM_SHIFT));
+  mrb_define_const(mrb, mrbtest, "FIXNUM_BIT", mrb_fixnum_value(MRB_INT_BIT >> MRB_FIXNUM_SHIFT));
+#else
+  mrb_define_const(mrb, mrbtest, "FIXNUM_MAX", mrb_fixnum_value(MRB_INT_MAX));
+  mrb_define_const(mrb, mrbtest, "FIXNUM_MIN", mrb_fixnum_value(MRB_INT_MIN));
+  mrb_define_const(mrb, mrbtest, "FIXNUM_BIT", mrb_fixnum_value(MRB_INT_BIT));
+#endif
+
   mrb_init_mrbtest(mrb);
   ret = eval_test(mrb);
   mrb_close(mrb);