| // Copyright 2015 The Rust Project Developers. See the COPYRIGHT |
| // file at the top-level directory of this distribution and at |
| // http://rust-lang.org/COPYRIGHT. |
| // |
| // Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or |
| // http://www.apache.org/licenses/LICENSE-2.0> or the MIT license |
| // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your |
| // option. This file may not be copied, modified, or distributed |
| // except according to those terms. |
| |
| // run-pass |
| |
| // Tests that we can combine a default impl that supplies one method with a |
| // full impl that supplies the other, and they can invoke one another. |
| |
| #![feature(specialization)] |
| |
| trait Foo { |
| fn foo_one(&self) -> &'static str; |
| fn foo_two(&self) -> &'static str; |
| fn foo_three(&self) -> &'static str; |
| } |
| |
| struct MyStruct; |
| |
| default impl<T> Foo for T { |
| fn foo_one(&self) -> &'static str { |
| self.foo_three() |
| } |
| } |
| |
| impl Foo for MyStruct { |
| fn foo_two(&self) -> &'static str { |
| self.foo_one() |
| } |
| |
| fn foo_three(&self) -> &'static str { |
| "generic" |
| } |
| } |
| |
| fn main() { |
| assert!(MyStruct.foo_two() == "generic"); |
| } |
