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1 | // Copyright 2012 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 | ||
b7449926 | 11 | // run-pass |
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12 | // Testing that this impl turns A into a Quux, because |
13 | // A is already a Foo Bar Baz | |
c34b1796 | 14 | |
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15 | impl<T:Foo + Bar + Baz> Quux for T { } |
16 | ||
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17 | trait Foo { fn f(&self) -> isize; } |
18 | trait Bar { fn g(&self) -> isize; } | |
19 | trait Baz { fn h(&self) -> isize; } | |
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20 | |
21 | trait Quux: Foo + Bar + Baz { } | |
22 | ||
c34b1796 | 23 | struct A { x: isize } |
223e47cc | 24 | |
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25 | impl Foo for A { fn f(&self) -> isize { 10 } } |
26 | impl Bar for A { fn g(&self) -> isize { 20 } } | |
27 | impl Baz for A { fn h(&self) -> isize { 30 } } | |
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28 | |
29 | fn f<T:Quux>(a: &T) { | |
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30 | assert_eq!(a.f(), 10); |
31 | assert_eq!(a.g(), 20); | |
32 | assert_eq!(a.h(), 30); | |
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33 | } |
34 | ||
35 | pub fn main() { | |
36 | let a = &A { x: 3 }; | |
37 | f(a); | |
38 | } |