1 files changed, 23 insertions, 0 deletions
diff --git a/library/std/src/sys/sgx/waitqueue/spin_mutex/tests.rs b/library/std/src/sys/sgx/waitqueue/spin_mutex/tests.rs
new file mode 100644
index 000000000..4c5994bea
--- /dev/null
+++ b/library/std/src/sys/sgx/waitqueue/spin_mutex/tests.rs
@@ -0,0 +1,23 @@
+#![allow(deprecated)]
+
+use super::*;
+use crate::sync::Arc;
+use crate::thread;
+use crate::time::Duration;
+
+#[test]
+fn sleep() {
+    let mutex = Arc::new(SpinMutex::<i32>::default());
+    let mutex2 = mutex.clone();
+    let guard = mutex.lock();
+    let t1 = thread::spawn(move || {
+        *mutex2.lock() = 1;
+    });
+
+    thread::sleep(Duration::from_millis(50));
+
+    assert_eq!(*guard, 0);
+    drop(guard);
+    t1.join().unwrap();
+    assert_eq!(*mutex.lock(), 1);
+}