Fix the openpty tests for FreeBSD 12.

tests/pty/openpty.rs

@@ -1,72 +1,76 @@
 use rustix::fs::{openat, Mode, OFlags, CWD};
 use rustix::pty::*;
 use std::fs::File;
-use std::io;
 use std::io::{Read, Write};
 
 #[test]
-fn openpty_basic() -> io::Result<()> {
+fn openpty_basic() {
     // Use `CLOEXEC` if we can.
     #[cfg(any(linux_kernel, target_os = "freebsd", target_os = "netbsd"))]
     let flags = OpenptFlags::RDWR | OpenptFlags::NOCTTY | OpenptFlags::CLOEXEC;
     #[cfg(not(any(linux_kernel, target_os = "freebsd", target_os = "netbsd")))]
     let flags = OpenptFlags::RDWR | OpenptFlags::NOCTTY;
 
-    let controller = openpt(flags)?;
+    let controller = openpt(flags).unwrap();
 
-    grantpt(&controller)?;
-    unlockpt(&controller)?;
+    grantpt(&controller).unwrap();
+    unlockpt(&controller).unwrap();
 
-    let name = ptsname(&controller, Vec::new())?;
+    let name = match ptsname(&controller, Vec::new()) {
+        Ok(name) => name,
+        #[cfg(target_os = "freebsd")]
+        Err(rustix::io::Errno::NOSYS) => return, // FreeBSD 12 doesn't support this
+        Err(err) => Err(err).unwrap(),
+    };
     let user = openat(
         CWD,
         name,
         OFlags::RDWR | OFlags::NOCTTY | OFlags::CLOEXEC,
         Mode::empty(),
-    )?;
+    )
+    .unwrap();
 
     let mut controller = File::from(controller);
     let mut user = File::from(user);
 
     // The '\x04' is Ctrl-D, the default EOF control code.
-    controller.write_all(b"Hello, world!\n\x04")?;
+    controller.write_all(b"Hello, world!\n\x04").unwrap();
 
     let mut s = String::new();
-    user.read_to_string(&mut s)?;
+    user.read_to_string(&mut s).unwrap();
 
     assert_eq!(s, "Hello, world!\n");
-    Ok(())
 }
 
 // Like `openpty_basic` but use `ioctl_tiocgptpeer` instead of `ptsname`.
 #[cfg(target_os = "linux")]
 #[test]
-fn openpty_get_peer() -> io::Result<()> {
+fn openpty_get_peer() {
     // Use `CLOEXEC` if we can.
     #[cfg(any(linux_kernel, target_os = "freebsd", target_os = "netbsd"))]
     let flags = OpenptFlags::RDWR | OpenptFlags::NOCTTY | OpenptFlags::CLOEXEC;
     #[cfg(not(any(linux_kernel, target_os = "freebsd", target_os = "netbsd")))]
     let flags = OpenptFlags::RDWR | OpenptFlags::NOCTTY;
 
-    let controller = openpt(flags)?;
+    let controller = openpt(flags).unwrap();
 
-    grantpt(&controller)?;
-    unlockpt(&controller)?;
+    grantpt(&controller).unwrap();
+    unlockpt(&controller).unwrap();
 
     let user = ioctl_tiocgptpeer(
         &controller,
         OpenptFlags::RDWR | OpenptFlags::NOCTTY | OpenptFlags::CLOEXEC,
-    )?;
+    )
+    .unwrap();
 
     let mut controller = File::from(controller);
     let mut user = File::from(user);
 
     // The '\x04' is Ctrl-D, the default EOF control code.
-    controller.write_all(b"Hello, world!\n\x04")?;
+    controller.write_all(b"Hello, world!\n\x04").unwrap();
 
     let mut s = String::new();
-    user.read_to_string(&mut s)?;
+    user.read_to_string(&mut s).unwrap();
 
     assert_eq!(s, "Hello, world!\n");
-    Ok(())
 }