mirror of
https://github.com/rust-lang/rust.git
synced 2024-10-30 14:01:51 +00:00
58 lines
2.1 KiB
Rust
58 lines
2.1 KiB
Rust
//@ run-pass
|
|
use std::borrow::Cow;
|
|
use std::borrow::Cow::{Borrowed as B, Owned as O};
|
|
use std::collections::BTreeMap;
|
|
|
|
type SendStr = Cow<'static, str>;
|
|
|
|
fn main() {
|
|
let mut map: BTreeMap<SendStr, usize> = BTreeMap::new();
|
|
assert!(map.insert(B("foo"), 42).is_none());
|
|
assert!(map.insert(O("foo".to_string()), 42).is_some());
|
|
assert!(map.insert(B("foo"), 42).is_some());
|
|
assert!(map.insert(O("foo".to_string()), 42).is_some());
|
|
|
|
assert!(map.insert(B("foo"), 43).is_some());
|
|
assert!(map.insert(O("foo".to_string()), 44).is_some());
|
|
assert!(map.insert(B("foo"), 45).is_some());
|
|
assert!(map.insert(O("foo".to_string()), 46).is_some());
|
|
|
|
let v = 46;
|
|
|
|
assert_eq!(map.get(&O("foo".to_string())), Some(&v));
|
|
assert_eq!(map.get(&B("foo")), Some(&v));
|
|
|
|
let (a, b, c, d) = (50, 51, 52, 53);
|
|
|
|
assert!(map.insert(B("abc"), a).is_none());
|
|
assert!(map.insert(O("bcd".to_string()), b).is_none());
|
|
assert!(map.insert(B("cde"), c).is_none());
|
|
assert!(map.insert(O("def".to_string()), d).is_none());
|
|
|
|
assert!(map.insert(B("abc"), a).is_some());
|
|
assert!(map.insert(O("bcd".to_string()), b).is_some());
|
|
assert!(map.insert(B("cde"), c).is_some());
|
|
assert!(map.insert(O("def".to_string()), d).is_some());
|
|
|
|
assert!(map.insert(O("abc".to_string()), a).is_some());
|
|
assert!(map.insert(B("bcd"), b).is_some());
|
|
assert!(map.insert(O("cde".to_string()), c).is_some());
|
|
assert!(map.insert(B("def"), d).is_some());
|
|
|
|
assert_eq!(map.get(&B("abc")), Some(&a));
|
|
assert_eq!(map.get(&B("bcd")), Some(&b));
|
|
assert_eq!(map.get(&B("cde")), Some(&c));
|
|
assert_eq!(map.get(&B("def")), Some(&d));
|
|
|
|
assert_eq!(map.get(&O("abc".to_string())), Some(&a));
|
|
assert_eq!(map.get(&O("bcd".to_string())), Some(&b));
|
|
assert_eq!(map.get(&O("cde".to_string())), Some(&c));
|
|
assert_eq!(map.get(&O("def".to_string())), Some(&d));
|
|
|
|
assert!(map.remove(&B("foo")).is_some());
|
|
assert_eq!(
|
|
map.into_iter().map(|(k, v)| format!("{}{}", k, v)).collect::<Vec<String>>().concat(),
|
|
"abc50bcd51cde52def53".to_string()
|
|
);
|
|
}
|