Add a new test for borrow checker Box<T> behavior

Author: Cameron Zwarich

src/test/compile-fail/borrowck-box-insensitivity.rs

@@ -0,0 +1,150 @@
+// Copyright 2014 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.
+
+struct A {
+    x: Box<int>,
+    y: int,
+}
+
+struct B {
+    x: Box<int>,
+    y: Box<int>,
+}
+
+struct C {
+    x: Box<A>,
+    y: int,
+}
+
+struct D {
+    x: Box<A>,
+    y: Box<int>,
+}
+
+fn copy_after_move() {
+    let a = box A { x: box 0, y: 1 };
+    let _x = a.x;
+    let _y = a.y; //~ ERROR use of partially moved
+}
+
+fn move_after_move() {
+    let a = box B { x: box 0, y: box 1 };
+    let _x = a.x;
+    let _y = a.y; //~ ERROR use of partially moved
+}
+
+fn borrow_after_move() {
+    let a = box A { x: box 0, y: 1 };
+    let _x = a.x;
+    let _y = &a.y; //~ ERROR use of partially moved
+}
+
+fn move_after_borrow() {
+    let a = box B { x: box 0, y: box 1 };
+    let _x = &a.x;
+    let _y = a.y; //~ ERROR cannot move
+}
+
+fn copy_after_mut_borrow() {
+    let mut a = box A { x: box 0, y: 1 };
+    let _x = &mut a.x;
+    let _y = a.y; //~ ERROR cannot use
+}
+
+fn move_after_mut_borrow() {
+    let mut a = box B { x: box 0, y: box 1 };
+    let _x = &mut a.x;
+    let _y = a.y; //~ ERROR cannot move
+}
+
+fn borrow_after_mut_borrow() {
+    let mut a = box A { x: box 0, y: 1 };
+    let _x = &mut a.x;
+    let _y = &a.y; //~ ERROR cannot borrow
+}
+
+fn mut_borrow_after_borrow() {
+    let mut a = box A { x: box 0, y: 1 };
+    let _x = &a.x;
+    let _y = &mut a.y; //~ ERROR cannot borrow
+}
+
+fn copy_after_move_nested() {
+    let a = box C { x: box A { x: box 0, y: 1 }, y: 2 };
+    let _x = a.x.x;
+    let _y = a.y; //~ ERROR use of partially moved
+}
+
+fn move_after_move_nested() {
+    let a = box D { x: box A { x: box 0, y: 1 }, y: box 2 };
+    let _x = a.x.x;
+    let _y = a.y; //~ ERROR use of partially moved
+}
+
+fn borrow_after_move_nested() {
+    let a = box C { x: box A { x: box 0, y: 1 }, y: 2 };
+    let _x = a.x.x;
+    let _y = &a.y; //~ ERROR use of partially moved
+}
+
+fn move_after_borrow_nested() {
+    let a = box D { x: box A { x: box 0, y: 1 }, y: box 2 };
+    let _x = &a.x.x;
+    let _y = a.y; //~ ERROR cannot move
+}
+
+fn copy_after_mut_borrow_nested() {
+    let mut a = box C { x: box A { x: box 0, y: 1 }, y: 2 };
+    let _x = &mut a.x.x;
+    let _y = a.y; //~ ERROR cannot use
+}
+
+fn move_after_mut_borrow_nested() {
+    let mut a = box D { x: box A { x: box 0, y: 1 }, y: box 2 };
+    let _x = &mut a.x.x;
+    let _y = a.y; //~ ERROR cannot move
+}
+
+fn borrow_after_mut_borrow_nested() {
+    let mut a = box C { x: box A { x: box 0, y: 1 }, y: 2 };
+    let _x = &mut a.x.x;
+    let _y = &a.y; //~ ERROR cannot borrow
+}
+
+fn mut_borrow_after_borrow_nested() {
+    let mut a = box C { x: box A { x: box 0, y: 1 }, y: 2 };
+    let _x = &a.x.x;
+    let _y = &mut a.y; //~ ERROR cannot borrow
+}
+
+fn main() {
+    copy_after_move();
+    move_after_move();
+    borrow_after_move();
+
+    move_after_borrow();
+
+    copy_after_mut_borrow();
+    move_after_mut_borrow();
+    borrow_after_mut_borrow();
+    mut_borrow_after_borrow();
+
+    copy_after_move_nested();
+    move_after_move_nested();
+    borrow_after_move_nested();
+
+    move_after_borrow_nested();
+
+    copy_after_mut_borrow_nested();
+    move_after_mut_borrow_nested();
+    borrow_after_mut_borrow_nested();
+    mut_borrow_after_borrow_nested();
+}
+