1 files changed, 31 insertions, 0 deletions
diff --git a/src/libcoretest/intrinsics.rs b/src/libcoretest/intrinsics.rs
new file mode 100644
index 00000000000..bcf8a6a433b
--- /dev/null
+++ b/src/libcoretest/intrinsics.rs
@@ -0,0 +1,31 @@
+// Copyright 2015 The Rust Project Developers. See the COPYRIGHT
+// file at the top-level directory of this distribution and at
+// http://rust-lang.org/COPYRIGHT.
+//
+// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+// option. This file may not be copied, modified, or distributed
+// except according to those terms.
+
+use core::intrinsics::TypeId;
+
+#[test]
+fn test_typeid_sized_types() {
+    struct X; struct Y(uint);
+
+    assert_eq!(TypeId::of::<X>(), TypeId::of::<X>());
+    assert_eq!(TypeId::of::<Y>(), TypeId::of::<Y>());
+    assert!(TypeId::of::<X>() != TypeId::of::<Y>());
+}
+
+#[test]
+fn test_typeid_unsized_types() {
+    trait Z {}
+    struct X(str); struct Y(Z + 'static);
+
+    assert_eq!(TypeId::of::<X>(), TypeId::of::<X>());
+    assert_eq!(TypeId::of::<Y>(), TypeId::of::<Y>());
+    assert!(TypeId::of::<X>() != TypeId::of::<Y>());
+}
+