diff --git a/src/liballoc/boxed.rs b/src/liballoc/boxed.rs
index a2cc98c7d0129..de18d7a4a01ae 100644
--- a/src/liballoc/boxed.rs
+++ b/src/liballoc/boxed.rs
@@ -187,56 +187,3 @@ impl<T: ?Sized> DerefMut for Box<T> {
     fn deref_mut(&mut self) -> &mut T { &mut **self }
 }
 
-#[cfg(test)]
-mod test {
-    #[test]
-    fn test_owned_clone() {
-        let a = Box::new(5i);
-        let b: Box<int> = a.clone();
-        assert!(a == b);
-    }
-
-    #[test]
-    fn any_move() {
-        let a = Box::new(8u) as Box<Any>;
-        let b = Box::new(Test) as Box<Any>;
-
-        match a.downcast::<uint>() {
-            Ok(a) => { assert!(a == Box::new(8u)); }
-            Err(..) => panic!()
-        }
-        match b.downcast::<Test>() {
-            Ok(a) => { assert!(a == Box::new(Test)); }
-            Err(..) => panic!()
-        }
-
-        let a = Box::new(8u) as Box<Any>;
-        let b = Box::new(Test) as Box<Any>;
-
-        assert!(a.downcast::<Box<Test>>().is_err());
-        assert!(b.downcast::<Box<uint>>().is_err());
-    }
-
-    #[test]
-    fn test_show() {
-        let a = Box::new(8u) as Box<Any>;
-        let b = Box::new(Test) as Box<Any>;
-        let a_str = a.to_str();
-        let b_str = b.to_str();
-        assert_eq!(a_str, "Box<Any>");
-        assert_eq!(b_str, "Box<Any>");
-
-        let a = &8u as &Any;
-        let b = &Test as &Any;
-        let s = format!("{}", a);
-        assert_eq!(s, "&Any");
-        let s = format!("{}", b);
-        assert_eq!(s, "&Any");
-    }
-
-    #[test]
-    fn deref() {
-        fn homura<T: Deref<Target=i32>>(_: T) { }
-        homura(Box::new(765i32));
-    }
-}
diff --git a/src/liballoc/boxed_test.rs b/src/liballoc/boxed_test.rs
new file mode 100644
index 0000000000000..c47a771f60d09
--- /dev/null
+++ b/src/liballoc/boxed_test.rs
@@ -0,0 +1,75 @@
+// Copyright 2012-2015 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.
+
+//! Test for `boxed` mod.
+
+use core::any::Any;
+use core::ops::Deref;
+use core::result::Result::{Ok, Err};
+use core::clone::Clone;
+
+use std::boxed::Box;
+use std::boxed::BoxAny;
+
+#[test]
+fn test_owned_clone() {
+    let a = Box::new(5i);
+    let b: Box<int> = a.clone();
+    assert!(a == b);
+}
+
+#[derive(PartialEq, Eq)]
+struct Test;
+
+#[test]
+fn any_move() {
+    let a = Box::new(8u) as Box<Any>;
+    let b = Box::new(Test) as Box<Any>;
+
+    match a.downcast::<uint>() {
+        Ok(a) => { assert!(a == Box::new(8u)); }
+        Err(..) => panic!()
+    }
+    match b.downcast::<Test>() {
+        Ok(a) => { assert!(a == Box::new(Test)); }
+        Err(..) => panic!()
+    }
+
+    let a = Box::new(8u) as Box<Any>;
+    let b = Box::new(Test) as Box<Any>;
+
+    assert!(a.downcast::<Box<Test>>().is_err());
+    assert!(b.downcast::<Box<uint>>().is_err());
+}
+
+#[test]
+fn test_show() {
+    let a = Box::new(8u) as Box<Any>;
+    let b = Box::new(Test) as Box<Any>;
+    let a_str = format!("{:?}", a);
+    let b_str = format!("{:?}", b);
+    assert_eq!(a_str, "Box<Any>");
+    assert_eq!(b_str, "Box<Any>");
+
+    static EIGHT: usize = 8us;
+    static TEST: Test = Test;
+    let a = &EIGHT as &Any;
+    let b = &TEST as &Any;
+    let s = format!("{:?}", a);
+    assert_eq!(s, "&Any");
+    let s = format!("{:?}", b);
+    assert_eq!(s, "&Any");
+}
+
+#[test]
+fn deref() {
+    fn homura<T: Deref<Target=i32>>(_: T) { }
+    homura(Box::new(765i32));
+}
diff --git a/src/liballoc/lib.rs b/src/liballoc/lib.rs
index 811e32e747dfd..be45429aa1aa8 100644
--- a/src/liballoc/lib.rs
+++ b/src/liballoc/lib.rs
@@ -91,6 +91,8 @@ pub mod heap;
 
 #[cfg(not(test))]
 pub mod boxed;
+#[cfg(test)]
+mod boxed_test;
 pub mod arc;
 pub mod rc;