diff options
Diffstat (limited to 'library/std/src/sys/windows/handle')
-rw-r--r-- | library/std/src/sys/windows/handle/tests.rs | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/library/std/src/sys/windows/handle/tests.rs b/library/std/src/sys/windows/handle/tests.rs new file mode 100644 index 000000000..d836dae4c --- /dev/null +++ b/library/std/src/sys/windows/handle/tests.rs @@ -0,0 +1,22 @@ +use crate::sys::pipe::{anon_pipe, Pipes}; +use crate::{thread, time}; + +/// Test the synchronous fallback for overlapped I/O. +#[test] +fn overlapped_handle_fallback() { + // Create some pipes. `ours` will be asynchronous. + let Pipes { ours, theirs } = anon_pipe(true, false).unwrap(); + + let async_readable = ours.into_handle(); + let sync_writeable = theirs.into_handle(); + + thread::scope(|_| { + thread::sleep(time::Duration::from_millis(100)); + sync_writeable.write(b"hello world!").unwrap(); + }); + + // The pipe buffer starts empty so reading won't complete synchronously unless + // our fallback path works. + let mut buffer = [0u8; 1024]; + async_readable.read(&mut buffer).unwrap(); +} |