3cb9fa26ef
This commit is an implementation of [RFC 565][rfc] which is a stabilization of the `std::fmt` module and the implementations of various formatting traits. Specifically, the following changes were performed: [rfc]: https://github.com/rust-lang/rfcs/blob/master/text/0565-show-string-guidelines.md * The `Show` trait is now deprecated, it was renamed to `Debug` * The `String` trait is now deprecated, it was renamed to `Display` * Many `Debug` and `Display` implementations were audited in accordance with the RFC and audited implementations now have the `#[stable]` attribute * Integers and floats no longer print a suffix * Smart pointers no longer print details that they are a smart pointer * Paths with `Debug` are now quoted and escape characters * The `unwrap` methods on `Result` now require `Display` instead of `Debug` * The `Error` trait no longer has a `detail` method and now requires that `Display` must be implemented. With the loss of `String`, this has moved into libcore. * `impl<E: Error> FromError<E> for Box<Error>` now exists * `derive(Show)` has been renamed to `derive(Debug)`. This is not currently warned about due to warnings being emitted on stage1+ While backwards compatibility is attempted to be maintained with a blanket implementation of `Display` for the old `String` trait (and the same for `Show`/`Debug`) this is still a breaking change due to primitives no longer implementing `String` as well as modifications such as `unwrap` and the `Error` trait. Most code is fairly straightforward to update with a rename or tweaks of method calls. [breaking-change] Closes #21436
61 lines
1.4 KiB
Rust
61 lines
1.4 KiB
Rust
// Copyright 2014 The Rust Project Developers. See the COPYRIGHT
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// file at the top-level directory of this distribution and at
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// http://rust-lang.org/COPYRIGHT.
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//
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// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
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// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
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// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
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// option. This file may not be copied, modified, or distributed
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// except according to those terms.
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#![allow(deprecated)]
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use core::finally::{try_finally, Finally};
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use std::thread::Thread;
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#[test]
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fn test_success() {
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let mut i = 0i;
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try_finally(
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&mut i, (),
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|i, ()| {
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*i = 10;
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},
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|i| {
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assert!(!Thread::panicking());
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assert_eq!(*i, 10);
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*i = 20;
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});
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assert_eq!(i, 20);
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}
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#[test]
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#[should_fail]
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fn test_fail() {
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let mut i = 0i;
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try_finally(
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&mut i, (),
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|i, ()| {
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*i = 10;
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panic!();
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},
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|i| {
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assert!(Thread::panicking());
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assert_eq!(*i, 10);
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})
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}
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#[test]
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fn test_retval() {
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let mut closure = |&mut:| 10i;
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let i = closure.finally(|| { });
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assert_eq!(i, 10);
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}
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#[test]
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fn test_compact() {
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fn do_some_fallible_work() {}
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fn but_always_run_this_function() { }
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let mut f = do_some_fallible_work;
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f.finally(but_always_run_this_function);
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}
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