1 files changed, 57 insertions, 0 deletions
diff --git a/library/alloc/tests/lib.rs b/library/alloc/tests/lib.rs
new file mode 100644
index 00000000000..e2dc816b015
--- /dev/null
+++ b/library/alloc/tests/lib.rs
@@ -0,0 +1,57 @@
+#![feature(allocator_api)]
+#![feature(box_syntax)]
+#![feature(btree_drain_filter)]
+#![feature(drain_filter)]
+#![feature(exact_size_is_empty)]
+#![feature(map_first_last)]
+#![feature(new_uninit)]
+#![feature(pattern)]
+#![feature(trusted_len)]
+#![feature(try_reserve)]
+#![feature(unboxed_closures)]
+#![feature(associated_type_bounds)]
+#![feature(binary_heap_into_iter_sorted)]
+#![feature(binary_heap_drain_sorted)]
+#![feature(split_inclusive)]
+#![feature(binary_heap_retain)]
+
+use std::collections::hash_map::DefaultHasher;
+use std::hash::{Hash, Hasher};
+
+mod arc;
+mod binary_heap;
+mod borrow;
+mod boxed;
+mod btree;
+mod cow_str;
+mod fmt;
+mod heap;
+mod linked_list;
+mod rc;
+mod slice;
+mod str;
+mod string;
+mod vec;
+mod vec_deque;
+
+fn hash<T: Hash>(t: &T) -> u64 {
+    let mut s = DefaultHasher::new();
+    t.hash(&mut s);
+    s.finish()
+}
+
+// FIXME: Instantiated functions with i128 in the signature is not supported in Emscripten.
+// See https://github.com/kripken/emscripten-fastcomp/issues/169
+#[cfg(not(target_os = "emscripten"))]
+#[test]
+fn test_boxed_hasher() {
+    let ordinary_hash = hash(&5u32);
+
+    let mut hasher_1 = Box::new(DefaultHasher::new());
+    5u32.hash(&mut hasher_1);
+    assert_eq!(ordinary_hash, hasher_1.finish());
+
+    let mut hasher_2 = Box::new(DefaultHasher::new()) as Box<dyn Hasher>;
+    5u32.hash(&mut hasher_2);
+    assert_eq!(ordinary_hash, hasher_2.finish());
+}