while we are at it, test that epoll actually uses ET semantics

RalfJung · RalfJung · commit dd292a01aa4f · 2024-08-16T16:23:03.000+02:00
diff --git a/tests/pass-dep/libc/libc-epoll.rs b/tests/pass-dep/libc/libc-epoll.rs
@@ -91,6 +91,9 @@ fn test_epoll_socketpair() {
     let expected_event = u32::try_from(libc::EPOLLRDHUP | libc::EPOLLIN | libc::EPOLLOUT).unwrap();
     let expected_value = u64::try_from(fds[1]).unwrap();
     assert!(check_epoll_wait::<8>(epfd, vec![(expected_event, expected_value)]));
+
+    // Check that this is indeed using "ET" (edge-trigger) semantics: a second epoll should return nothing.
+    assert!(check_epoll_wait::<8>(epfd, vec![]));
 }
 
 fn test_epoll_ctl_mod() {

Original file line number	Diff line number	Diff line change
`@@ -91,6 +91,9 @@ fn test_epoll_socketpair() {`
`91`	`91`	`let expected_event = u32::try_from(libc::EPOLLRDHUP \| libc::EPOLLIN \| libc::EPOLLOUT).unwrap();`
`92`	`92`	`let expected_value = u64::try_from(fds[1]).unwrap();`
`93`	`93`	`assert!(check_epoll_wait::<8>(epfd, vec![(expected_event, expected_value)]));`
	`94`	`+`
	`95`	`+ // Check that this is indeed using "ET" (edge-trigger) semantics: a second epoll should return nothing.`
	`96`	`+ assert!(check_epoll_wait::<8>(epfd, vec![]));`
`94`	`97`	`}`
`95`	`98`
`96`	`99`	`fn test_epoll_ctl_mod() {`