rust/tests/ui/coroutine/gen_fn_iter.rs
2024-02-16 20:02:50 +00:00

21 lines
417 B
Rust

//@ edition: 2024
//@ compile-flags: -Zunstable-options
//@ run-pass
#![feature(gen_blocks)]
// make sure that a ridiculously simple gen fn works as an iterator.
gen fn foo() -> i32 {
yield 1;
yield 2;
yield 3;
}
fn main() {
let mut iter = foo();
assert_eq!(iter.next(), Some(1));
assert_eq!(iter.next(), Some(2));
assert_eq!(iter.next(), Some(3));
assert_eq!(iter.next(), None);
}