1 files changed, 20 insertions, 0 deletions
diff --git a/library/std/src/sys/sgx/waitqueue/tests.rs b/library/std/src/sys/sgx/waitqueue/tests.rs
new file mode 100644
index 000000000..bf91fdd08
--- /dev/null
+++ b/library/std/src/sys/sgx/waitqueue/tests.rs
@@ -0,0 +1,20 @@
+use super::*;
+use crate::sync::Arc;
+use crate::thread;
+
+#[test]
+fn queue() {
+    let wq = Arc::new(SpinMutex::<WaitVariable<()>>::default());
+    let wq2 = wq.clone();
+
+    let locked = wq.lock();
+
+    let t1 = thread::spawn(move || {
+        // if we obtain the lock, the main thread should be waiting
+        assert!(WaitQueue::notify_one(wq2.lock()).is_ok());
+    });
+
+    WaitQueue::wait(locked, || {});
+
+    t1.join().unwrap();
+}