rust/tests/ui/specialization/specialization-cross-crate.rs

51 lines
1.3 KiB
Rust

// run-pass
// aux-build:specialization_cross_crate.rs
#![feature(specialization)] //~ WARN the feature `specialization` is incomplete
extern crate specialization_cross_crate;
use specialization_cross_crate::*;
struct NotClone;
#[derive(Clone)]
struct MarkedAndClone;
impl MyMarker for MarkedAndClone {}
struct MyType<T>(#[allow(dead_code)] T);
impl<T> Foo for MyType<T> {
default fn foo(&self) -> &'static str {
"generic MyType"
}
}
impl Foo for MyType<u8> {
fn foo(&self) -> &'static str {
"MyType<u8>"
}
}
struct MyOtherType;
impl Foo for MyOtherType {}
fn main() {
assert!(NotClone.foo() == "generic");
assert!(0u8.foo() == "generic Clone");
assert!(vec![NotClone].foo() == "generic");
assert!(vec![0u8].foo() == "generic Vec");
assert!(vec![0i32].foo() == "Vec<i32>");
assert!(0i32.foo() == "i32");
assert!(String::new().foo() == "String");
assert!(((), 0).foo() == "generic pair");
assert!(((), ()).foo() == "generic uniform pair");
assert!((0u8, 0u32).foo() == "(u8, u32)");
assert!((0u8, 0u8).foo() == "(u8, u8)");
assert!(MarkedAndClone.foo() == "generic Clone + MyMarker");
assert!(MyType(()).foo() == "generic MyType");
assert!(MyType(0u8).foo() == "MyType<u8>");
assert!(MyOtherType.foo() == "generic");
}