mirror of
https://github.com/rust-lang/rust.git
synced 2025-05-14 02:49:40 +00:00
2808977e05
Approved ACP: https://github.com/rust-lang/libs-team/issues/502 Tracking issue: https://github.com/rust-lang/rust/issues/134915 These types represent human-readable strings that are conventionally, but not always, UTF-8. The `Debug` impl prints non-UTF-8 bytes using escape sequences, and the `Display` impl uses the Unicode replacement character. This is a minimal implementation of these types and associated trait impls. It does not add any helper methods to other types such as `[u8]` or `Vec<u8>`. I've omitted a few implementations of `AsRef`, `AsMut`, `Borrow`, `From`, and `PartialOrd`, when those would be the second implementation for a type (counting the `T` impl) or otherwise may cause inference failures. These impls are important, but we can attempt to add them later in standalone commits, and run them through crater. In addition to the `bstr` feature, I've added a `bstr_internals` feature for APIs provided by `core` for use by `alloc` but not currently intended for stabilization. This API and its implementation are based *heavily* on the `bstr` crate by Andrew Gallant (@BurntSushi).
55 lines
2.1 KiB
Rust
55 lines
2.1 KiB
Rust
#![feature(bstr)]
|
||
|
||
use core::ByteStr;
|
||
|
||
#[test]
|
||
fn test_debug() {
|
||
assert_eq!(
|
||
r#""\0\x01\x02\x03\x04\x05\x06\x07\x08\t\n\x11\x12\r\x14\x15\x16\x17\x18\x19\x1a\x1b\x1c\x1d\x1e\x1f \x7f\x80\x81\xfe\xff""#,
|
||
format!("{:?}", ByteStr::new(b"\0\x01\x02\x03\x04\x05\x06\x07\x08\t\n\x11\x12\r\x14\x15\x16\x17\x18\x19\x1a\x1b\x1c\x1d\x1e\x1f \x7f\x80\x81\xfe\xff")),
|
||
);
|
||
}
|
||
|
||
#[test]
|
||
fn test_display() {
|
||
let b1 = ByteStr::new("abc");
|
||
let b2 = ByteStr::new(b"\xf0\x28\x8c\xbc");
|
||
|
||
assert_eq!(&format!("{b1}"), "abc");
|
||
assert_eq!(&format!("{b2}"), "<EFBFBD>(<28><>");
|
||
|
||
assert_eq!(&format!("{b1:<7}!"), "abc !");
|
||
assert_eq!(&format!("{b1:>7}!"), " abc!");
|
||
assert_eq!(&format!("{b1:^7}!"), " abc !");
|
||
assert_eq!(&format!("{b1:^6}!"), " abc !");
|
||
assert_eq!(&format!("{b1:-<7}!"), "abc----!");
|
||
assert_eq!(&format!("{b1:->7}!"), "----abc!");
|
||
assert_eq!(&format!("{b1:-^7}!"), "--abc--!");
|
||
assert_eq!(&format!("{b1:-^6}!"), "-abc--!");
|
||
|
||
assert_eq!(&format!("{b2:<7}!"), "<EFBFBD>(<28><> !");
|
||
assert_eq!(&format!("{b2:>7}!"), " <20>(<28><>!");
|
||
assert_eq!(&format!("{b2:^7}!"), " <20>(<28><> !");
|
||
assert_eq!(&format!("{b2:^6}!"), " <20>(<28><> !");
|
||
assert_eq!(&format!("{b2:-<7}!"), "<EFBFBD>(<28><>---!");
|
||
assert_eq!(&format!("{b2:->7}!"), "---<2D>(<28><>!");
|
||
assert_eq!(&format!("{b2:-^7}!"), "-<2D>(<28><>--!");
|
||
assert_eq!(&format!("{b2:-^6}!"), "-<2D>(<28><>-!");
|
||
|
||
assert_eq!(&format!("{b1:<2}!"), "abc!");
|
||
assert_eq!(&format!("{b1:>2}!"), "abc!");
|
||
assert_eq!(&format!("{b1:^2}!"), "abc!");
|
||
assert_eq!(&format!("{b1:-<2}!"), "abc!");
|
||
assert_eq!(&format!("{b1:->2}!"), "abc!");
|
||
assert_eq!(&format!("{b1:-^2}!"), "abc!");
|
||
|
||
assert_eq!(&format!("{b2:<3}!"), "<EFBFBD>(<28><>!");
|
||
assert_eq!(&format!("{b2:>3}!"), "<EFBFBD>(<28><>!");
|
||
assert_eq!(&format!("{b2:^3}!"), "<EFBFBD>(<28><>!");
|
||
assert_eq!(&format!("{b2:^2}!"), "<EFBFBD>(<28><>!");
|
||
assert_eq!(&format!("{b2:-<3}!"), "<EFBFBD>(<28><>!");
|
||
assert_eq!(&format!("{b2:->3}!"), "<EFBFBD>(<28><>!");
|
||
assert_eq!(&format!("{b2:-^3}!"), "<EFBFBD>(<28><>!");
|
||
assert_eq!(&format!("{b2:-^2}!"), "<EFBFBD>(<28><>!");
|
||
}
|