Expose `from_raw` on `WaitStatus` and make it return a `Result`

1 files changed, 9 insertions, 0 deletions

diff --git a/test/sys/test_wait.rs b/test/sys/test_wait.rs
index 44a111a3..02f32734 100644
--- a/test/sys/test_wait.rs
+++ b/test/sys/test_wait.rs
@@ -1,3 +1,4 @@
+use nix::Error;
 use nix::unistd::*;
 use nix::unistd::ForkResult::*;
 use nix::sys::signal::*;
@@ -38,6 +39,14 @@ fn test_wait_exit() {
 }
 
 #[test]
+fn test_waitstatus_from_raw() {
+    let pid = Pid::from_raw(1);
+    assert_eq!(WaitStatus::from_raw(pid, 0x0002), Ok(WaitStatus::Signaled(pid, Signal::SIGINT, false)));
+    assert_eq!(WaitStatus::from_raw(pid, 0x0200), Ok(WaitStatus::Exited(pid, 2)));
+    assert_eq!(WaitStatus::from_raw(pid, 0x7f7f), Err(Error::invalid_argument()));
+}
+
+#[test]
 fn test_waitstatus_pid() {
     let _m = ::FORK_MTX.lock().expect("Mutex got poisoned by another test");