1 files changed, 14 insertions, 0 deletions
diff --git a/vendor/rayon-core/tests/double_init_fail.rs b/vendor/rayon-core/tests/double_init_fail.rs
new file mode 100644
index 000000000..ea06bf0e1
--- /dev/null
+++ b/vendor/rayon-core/tests/double_init_fail.rs
@@ -0,0 +1,14 @@
+use rayon_core::ThreadPoolBuilder;
+use std::error::Error;
+
+#[test]
+fn double_init_fail() {
+    let result1 = ThreadPoolBuilder::new().build_global();
+    assert_eq!(result1.unwrap(), ());
+    let err = ThreadPoolBuilder::new().build_global().unwrap_err();
+    assert!(err.source().is_none());
+    assert_eq!(
+        err.to_string(),
+        "The global thread pool has already been initialized.",
+    );
+}