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1 | // Copyright 2013 The Rust Project Developers. See the COPYRIGHT |
2 | // file at the top-level directory of this distribution and at | |
3 | // http://rust-lang.org/COPYRIGHT. | |
4 | // | |
5 | // Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or | |
6 | // http://www.apache.org/licenses/LICENSE-2.0> or the MIT license | |
7 | // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your | |
8 | // option. This file may not be copied, modified, or distributed | |
9 | // except according to those terms. | |
10 | ||
1a4d82fc | 11 | use std::collections::HashMap; |
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12 | use std::borrow::Cow; |
13 | ||
14 | use std::borrow::Cow::Borrowed as B; | |
15 | use std::borrow::Cow::Owned as O; | |
1a4d82fc | 16 | |
85aaf69f | 17 | type SendStr = Cow<'static, str>; |
1a4d82fc | 18 | |
54a0048b | 19 | fn main() { |
c34b1796 | 20 | let mut map: HashMap<SendStr, usize> = HashMap::new(); |
54a0048b SL |
21 | assert!(map.insert(B("foo"), 42).is_none()); |
22 | assert!(map.insert(O("foo".to_string()), 42).is_some()); | |
23 | assert!(map.insert(B("foo"), 42).is_some()); | |
24 | assert!(map.insert(O("foo".to_string()), 42).is_some()); | |
1a4d82fc | 25 | |
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26 | assert!(map.insert(B("foo"), 43).is_some()); |
27 | assert!(map.insert(O("foo".to_string()), 44).is_some()); | |
28 | assert!(map.insert(B("foo"), 45).is_some()); | |
29 | assert!(map.insert(O("foo".to_string()), 46).is_some()); | |
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30 | |
31 | let v = 46; | |
32 | ||
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33 | assert_eq!(map.get(&O("foo".to_string())), Some(&v)); |
34 | assert_eq!(map.get(&B("foo")), Some(&v)); | |
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35 | |
36 | let (a, b, c, d) = (50, 51, 52, 53); | |
37 | ||
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38 | assert!(map.insert(B("abc"), a).is_none()); |
39 | assert!(map.insert(O("bcd".to_string()), b).is_none()); | |
40 | assert!(map.insert(B("cde"), c).is_none()); | |
41 | assert!(map.insert(O("def".to_string()), d).is_none()); | |
1a4d82fc | 42 | |
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43 | assert!(map.insert(B("abc"), a).is_some()); |
44 | assert!(map.insert(O("bcd".to_string()), b).is_some()); | |
45 | assert!(map.insert(B("cde"), c).is_some()); | |
46 | assert!(map.insert(O("def".to_string()), d).is_some()); | |
1a4d82fc | 47 | |
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48 | assert!(map.insert(O("abc".to_string()), a).is_some()); |
49 | assert!(map.insert(B("bcd"), b).is_some()); | |
50 | assert!(map.insert(O("cde".to_string()), c).is_some()); | |
51 | assert!(map.insert(B("def"), d).is_some()); | |
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52 | |
53 | assert_eq!(map.get("abc"), Some(&a)); | |
54 | assert_eq!(map.get("bcd"), Some(&b)); | |
55 | assert_eq!(map.get("cde"), Some(&c)); | |
56 | assert_eq!(map.get("def"), Some(&d)); | |
57 | ||
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58 | assert_eq!(map.get(&B("abc")), Some(&a)); |
59 | assert_eq!(map.get(&B("bcd")), Some(&b)); | |
60 | assert_eq!(map.get(&B("cde")), Some(&c)); | |
61 | assert_eq!(map.get(&B("def")), Some(&d)); | |
1a4d82fc | 62 | } |