Add a test for std::any::type_name() as a const fn

This is a modified version of the test I added previously. The difference is this version implements a wrapper around std::any::type_name versus core::intrinsics::type_name, in order to show that it works as desired / intended.
This commit is contained in:
TankhouseAle 2019-07-29 22:57:21 -04:00 committed by GitHub
parent 04b88a9eba
commit 873b361480
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23

View File

@ -0,0 +1,29 @@
// run-pass
#![feature(const_fn)]
#![feature(const_type_name)]
#![allow(dead_code)]
const fn type_name_wrapper<T>(_: &T) -> &'static str {
std::any::type_name::<T>()
}
struct Struct<TA, TB, TC> {
a: TA,
b: TB,
c: TC,
}
type StructInstantiation = Struct<i8, f64, bool>;
const CONST_STRUCT: StructInstantiation = StructInstantiation { a: 12, b: 13.7, c: false };
const CONST_STRUCT_NAME: &'static str = type_name_wrapper(&CONST_STRUCT);
fn main() {
let non_const_struct = StructInstantiation { a: 87, b: 65.99, c: true };
let non_const_struct_name = type_name_wrapper(&non_const_struct);
assert_eq!(CONST_STRUCT_NAME, non_const_struct_name);
}