test that SIGWINCH is sent properly

1 files changed, 27 insertions, 0 deletions

diff --git a/tests/winch.rs b/tests/winch.rs
new file mode 100644
index 0000000..234afeb
--- /dev/null
+++ b/tests/winch.rs
@@ -0,0 +1,27 @@
+use pty_process::Command as _;
+use std::io::{Read as _, Write as _};
+
+#[cfg(feature = "backend-std")]
+#[test]
+fn test_winch() {
+    let mut child = std::process::Command::new("perl")
+        .args(&[
+            "-E",
+            "$|++; $SIG{WINCH} = sub { say 'WINCH' }; say 'started'; <>",
+        ])
+        .spawn_pty(Some(&pty_process::Size::new(24, 80)))
+        .unwrap();
+
+    let mut buf = [0u8; 1024];
+    let bytes = child.pty().read(&mut buf).unwrap();
+    assert_eq!(&buf[..bytes], b"started\r\n");
+
+    child.resize_pty(&pty_process::Size::new(25, 80)).unwrap();
+
+    let bytes = child.pty().read(&mut buf).unwrap();
+    assert_eq!(&buf[..bytes], b"WINCH\r\n");
+
+    child.pty().write_all(b"\n").unwrap();
+    let status = child.wait().unwrap();
+    assert_eq!(status.code().unwrap(), 0);
+}