rust/tests/rustdoc-json/traits/trait_alias.rs
2023-01-11 09:32:08 +00:00

31 lines
1.3 KiB
Rust

// Regression test for <https://github.com/rust-lang/rust/issues/104923>
// ignore-tidy-linelength
#![feature(trait_alias)]
// @set Orig = "$.index[*][?(@.name == 'Orig')].id"
// @is "$.index[*][?(@.name == 'Orig')].kind" '"trait"'
pub trait Orig<T> {}
// @set Alias = "$.index[*][?(@.name == 'Alias')].id"
// @is "$.index[*][?(@.name == 'Alias')].kind" '"trait_alias"'
// @is "$.index[*][?(@.name == 'Alias')].inner.generics" '{"params": [], "where_predicates": []}'
// @count "$.index[*][?(@.name == 'Alias')].inner.params[*]" 1
// @is "$.index[*][?(@.name == 'Alias')].inner.params[0].trait_bound.trait.id" $Orig
// @is "$.index[*][?(@.name == 'Alias')].inner.params[0].trait_bound.trait.args.angle_bracketed.args[0].type.inner" '"i32"'
pub trait Alias = Orig<i32>;
pub struct Struct;
impl Orig<i32> for Struct {}
// @is "$.index[*][?(@.name=='takes_alias')].inner.decl.inputs[0][1].kind" '"impl_trait"'
// @is "$.index[*][?(@.name=='takes_alias')].inner.decl.inputs[0][1].inner[0].trait_bound.trait.id" $Alias
// @is "$.index[*][?(@.name=='takes_alias')].inner.generics.params[0].kind.type.bounds[0].trait_bound.trait.id" $Alias
pub fn takes_alias(_: impl Alias) {}
// FIXME: Should the trait be mentioned in both the decl and generics?
fn main() {
takes_alias(Struct);
}