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
68 lines
1.8 KiB
Rust
68 lines
1.8 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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use std::cmp::Ordering::{Equal, Less, Greater};
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#[test]
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fn test_clone() {
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let a = (1i, "2");
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let b = a.clone();
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assert_eq!(a, b);
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}
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#[test]
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fn test_tuple_cmp() {
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let (small, big) = ((1u, 2u, 3u), (3u, 2u, 1u));
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let nan = 0.0f64/0.0;
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// PartialEq
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assert_eq!(small, small);
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assert_eq!(big, big);
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assert!(small != big);
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assert!(big != small);
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// PartialOrd
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assert!(small < big);
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assert!(!(small < small));
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assert!(!(big < small));
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assert!(!(big < big));
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assert!(small <= small);
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assert!(big <= big);
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assert!(big > small);
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assert!(small >= small);
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assert!(big >= small);
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assert!(big >= big);
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assert!(!((1.0f64, 2.0f64) < (nan, 3.0)));
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assert!(!((1.0f64, 2.0f64) <= (nan, 3.0)));
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assert!(!((1.0f64, 2.0f64) > (nan, 3.0)));
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assert!(!((1.0f64, 2.0f64) >= (nan, 3.0)));
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assert!(((1.0f64, 2.0f64) < (2.0, nan)));
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assert!(!((2.0f64, 2.0f64) < (2.0, nan)));
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// Ord
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assert!(small.cmp(&small) == Equal);
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assert!(big.cmp(&big) == Equal);
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assert!(small.cmp(&big) == Less);
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assert!(big.cmp(&small) == Greater);
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}
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#[test]
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fn test_show() {
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let s = format!("{:?}", (1i,));
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assert_eq!(s, "(1,)");
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let s = format!("{:?}", (1i, true));
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assert_eq!(s, "(1, true)");
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let s = format!("{:?}", (1i, "hi", true));
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assert_eq!(s, "(1, \"hi\", true)");
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}
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