test: dynamic function argument bind test

test/dynamic-printf.c

@@ -10,7 +10,7 @@ int main(int argc, const char **argv)
 	};
 
 	fx_function *func = fx_function_create(
-		"test_function",
+		"printf",
 		FX_FUNCTION_F_VARARG,
 		(fx_function_impl)printf,
 		arg_types,
@@ -23,8 +23,10 @@ int main(int argc, const char **argv)
 		FX_VALUE_DOUBLE(2.5),
 	};
 
+	fx_function_bind(func, args, sizeof args / sizeof args[0]);
+
 	fx_value result = FX_VALUE_EMPTY;
-	int r = fx_function_invoke(func, args, 3, &result);
+	int r = fx_function_invoke(func, NULL, 0, &result);
 	printf("%" PRIdPTR "\n", result.v_int);
 	return 0;
 }