rustc/vendor/dyn-clone-1.0.17/tests/macros.rs

#![allow(clippy::extra_unused_type_parameters)]

use dyn_clone::{clone_trait_object, DynClone};

fn assert_clone<T: Clone>() {}

#[test]
fn test_plain() {
    trait Trait: DynClone {}

    clone_trait_object!(Trait);

    assert_clone::<Box<dyn Trait>>();
    assert_clone::<Box<dyn Trait + Send>>();
    assert_clone::<Box<dyn Trait + Sync>>();
    assert_clone::<Box<dyn Trait + Send + Sync>>();
}

#[test]
fn test_type_parameter() {
    trait Trait<T>: DynClone {}

    clone_trait_object!(<T> Trait<T>);

    assert_clone::<Box<dyn Trait<u32>>>();
}

#[test]
fn test_generic_bound() {
    trait Trait<T: PartialEq<T>, U>: DynClone {}

    clone_trait_object!(<T: PartialEq<T>, U> Trait<T, U>);

    assert_clone::<Box<dyn Trait<u32, ()>>>();
}

#[test]
fn test_where_clause() {
    trait Trait<T>: DynClone
    where
        T: Clone,
    {
    }

    clone_trait_object!(<T> Trait<T> where T: Clone);

    assert_clone::<Box<dyn Trait<u32>>>();
}

#[test]
fn test_lifetime() {
    trait Trait<'a>: DynClone {}

    clone_trait_object!(<'a> Trait<'a>);

    assert_clone::<Box<dyn Trait>>();
}