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Merge macro variable impl test into master

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This commit is contained in:
David Tolnay 2020-12-07 10:31:57 -08:00
commit 12962ccc17
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1 changed files with 41 additions and 0 deletions
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41
tests/test_item.rs
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@ -118,3 +118,44 @@ fn test_negative_impl() {
}
"###);
}
#[test]
fn test_macro_variable_impl() {
// mimics the token stream corresponding to `impl $trait for $ty {}`
let tokens = TokenStream::from_iter(vec![
TokenTree::Ident(Ident::new("impl", Span::call_site())),
TokenTree::Group(Group::new(Delimiter::None, quote!(Trait))),
TokenTree::Ident(Ident::new("for", Span::call_site())),
TokenTree::Group(Group::new(Delimiter::None, quote!(Type))),
TokenTree::Group(Group::new(Delimiter::Brace, TokenStream::new())),
]);
snapshot!(tokens as Item, @r###"
Item::Impl {
generics: Generics,
trait_: Some((
None,
Path {
segments: [
PathSegment {
ident: "Trait",
arguments: None,
},
],
},
)),
self_ty: Type::Group {
elem: Type::Path {
path: Path {
segments: [
PathSegment {
ident: "Type",
arguments: None,
},
],
},
},
},
}
"###);
}