diff options
Diffstat (limited to 'src/test/ui/run-pass/traits/trait-inheritance-simple.rs')
| -rw-r--r-- | src/test/ui/run-pass/traits/trait-inheritance-simple.rs | 32 | 
1 files changed, 32 insertions, 0 deletions
| diff --git a/src/test/ui/run-pass/traits/trait-inheritance-simple.rs b/src/test/ui/run-pass/traits/trait-inheritance-simple.rs new file mode 100644 index 00000000000..917e520339a --- /dev/null +++ b/src/test/ui/run-pass/traits/trait-inheritance-simple.rs @@ -0,0 +1,32 @@ +// Copyright 2012 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. + + +trait Foo { fn f(&self) -> isize; } +trait Bar : Foo { fn g(&self) -> isize; } + +struct A { x: isize } + +impl Foo for A { fn f(&self) -> isize { 10 } } +impl Bar for A { fn g(&self) -> isize { 20 } } + +fn ff<T:Foo>(a: &T) -> isize { + a.f() +} + +fn gg<T:Bar>(a: &T) -> isize { + a.g() +} + +pub fn main() { + let a = &A { x: 3 }; + assert_eq!(ff(a), 10); + assert_eq!(gg(a), 20); +} | 
