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#![cfg(all(feature = "executor",feature="async-await"))]
#![deny(unreachable_code)]
use futures::{executor::block_on, try_join};
// TODO: This abuses https://github.com/rust-lang/rust/issues/58733 in order to
// test behavior of the `try_join!` macro with the never type before it is
// stabilized. Once `!` is again stabilized this can be removed and replaced
// with direct use of `!` below where `Never` is used.
trait MyTrait {
type Output;
}
impl<T> MyTrait for fn() -> T {
type Output = T;
}
type Never = <fn() -> ! as MyTrait>::Output;
#[test]
fn try_join_never_error() {
block_on(async {
let future1 = async { Ok::<(), Never>(()) };
let future2 = async { Ok::<(), Never>(()) };
try_join!(future1, future2)
})
.unwrap();
}
#[test]
fn try_join_never_ok() {
block_on(async {
let future1 = async { Err::<Never, ()>(()) };
let future2 = async { Err::<Never, ()>(()) };
try_join!(future1, future2)
})
.unwrap_err();
}
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