1 files changed, 20 insertions, 0 deletions
diff --git a/src/test/run-make/libtest-thread-limit/test.rs b/src/test/run-make/libtest-thread-limit/test.rs
new file mode 100644
index 000000000..26bc29216
--- /dev/null
+++ b/src/test/run-make/libtest-thread-limit/test.rs
@@ -0,0 +1,20 @@
+#![feature(once_cell)]
+
+use std::{
+    io::ErrorKind,
+    sync::OnceLock,
+    thread::{self, Builder, ThreadId},
+};
+
+static THREAD_ID: OnceLock<ThreadId> = OnceLock::new();
+
+#[test]
+fn spawn_thread_would_block() {
+    assert_eq!(Builder::new().spawn(|| unreachable!()).unwrap_err().kind(), ErrorKind::WouldBlock);
+    THREAD_ID.set(thread::current().id()).unwrap();
+}
+
+#[test]
+fn run_in_same_thread() {
+    assert_eq!(*THREAD_ID.get().unwrap(), thread::current().id());
+}