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// 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;
use std::boxed::Box;
#[test]
fn test_owned_clone() {
let a = Box::new(5);
let b: Box<i32> = a.clone();
assert!(a == b);
}
#[derive(PartialEq, Eq)]
struct Test;
#[test]
fn any_move() {
let a = Box::new(8) as Box<Any>;
let b = Box::new(Test) as Box<Any>;
match a.downcast::<i32>() {
Ok(a) => {
assert!(a == Box::new(8));
}
Err(..) => panic!(),
}
match b.downcast::<Test>() {
Ok(a) => {
assert!(a == Box::new(Test));
}
Err(..) => panic!(),
}
let a = Box::new(8) as Box<Any>;
let b = Box::new(Test) as Box<Any>;
assert!(a.downcast::<Box<Test>>().is_err());
assert!(b.downcast::<Box<i32>>().is_err());
}
#[test]
fn test_show() {
let a = Box::new(8) 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, "Any");
assert_eq!(b_str, "Any");
static EIGHT: usize = 8;
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(765));
}
#[test]
fn raw_sized() {
let x = Box::new(17);
let p = Box::into_raw(x);
unsafe {
assert_eq!(17, *p);
*p = 19;
let y = Box::from_raw(p);
assert_eq!(19, *y);
}
}
#[test]
fn raw_trait() {
trait Foo {
fn get(&self) -> u32;
fn set(&mut self, value: u32);
}
struct Bar(u32);
impl Foo for Bar {
fn get(&self) -> u32 {
self.0
}
fn set(&mut self, value: u32) {
self.0 = value;
}
}
let x: Box<Foo> = Box::new(Bar(17));
let p = Box::into_raw(x);
unsafe {
assert_eq!(17, (*p).get());
(*p).set(19);
let y: Box<Foo> = Box::from_raw(p);
assert_eq!(19, y.get());
}
}
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