rust-lang
diff --git a/‎tests/ui/box/unit/basic-operations.rs‎
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diff --git a/‎tests/ui/box/unit/expr-if-unique.rs‎
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diff --git a/‎tests/ui/box/unit/unique-assign-copy.rs‎
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diff --git a/‎tests/ui/box/unit/unique-assign-drop.rs‎
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diff --git a/‎tests/ui/box/unit/unique-assign-generic.rs‎
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diff --git a/‎tests/ui/box/unit/unique-autoderef-field.rs‎
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diff --git a/‎tests/ui/box/unit/unique-cmp.rs‎
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diff --git a/‎tests/ui/box/unit/unique-decl-init-copy.rs‎
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diff --git a/‎tests/ui/box/unit/unique-fn-arg-mut.rs‎
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diff --git a/‎tests/ui/box/unit/unique-move-drop.rs‎
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+//! A collection of very old tests of basic `Box` functionality.
+//@ run-pass
+
+fn deref_mut() {
+    let mut i: Box<_> = Box::new(0);
+    *i = 1;
+    assert_eq!(*i, 1);
+}
+
+// Tests for if as expressions returning boxed types
+fn box_if() {
+    let rs: Box<_> = if true { Box::new(100) } else { Box::new(101) };
+    assert_eq!(*rs, 100);
+}
+
+fn cmp() {
+    let i: Box<_> = Box::new(100);
+    assert_eq!(i, Box::new(100));
+    assert!(i < Box::new(101));
+    assert!(i <= Box::new(100));
+    assert!(i > Box::new(99));
+    assert!(i >= Box::new(99));
+}
+
+fn autoderef_field() {
+    struct J {
+        j: isize,
+    }
+
+    let i: Box<_> = Box::new(J { j: 100 });
+    assert_eq!(i.j, 100);
+}
+
+fn assign_copy() {
+    let mut i: Box<_> = Box::new(1);
+    // Should be a copy
+    let mut j;
+    j = i.clone();
+    *i = 2;
+    *j = 3;
+    assert_eq!(*i, 2);
+    assert_eq!(*j, 3);
+}
+
+fn arg_mut() {
+    fn f(i: &mut Box<isize>) {
+        *i = Box::new(200);
+    }
+    let mut i = Box::new(100);
+    f(&mut i);
+    assert_eq!(*i, 200);
+}
+
+fn assign_generic() {
+    fn f<T>(t: T) -> T {
+        let t1 = t;
+        t1
+    }
+
+    let t = f::<Box<_>>(Box::new(100));
+    assert_eq!(t, Box::new(100));
+}
+
+pub fn main() {
+    deref_mut();
+    box_if();
+    cmp();
+    autoderef_field();
+    assign_copy();
+    arg_mut();
+    assign_generic();
+}