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Add none-group statement parsing test

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This commit is contained in:
David Tolnay 2020-11-01 10:23:25 -08:00
parent e627ec80ce
commit ba4f188168
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1 changed files with 30 additions and 0 deletions
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30
tests/test_stmt.rs
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@ -1,6 +1,8 @@
#[macro_use]
mod macros;
use proc_macro2::{Delimiter, Group, Ident, Span, TokenStream, TokenTree};
use std::iter::FromIterator;
use syn::Stmt;
#[test]
@ -42,3 +44,31 @@ fn test_raw_variable() {
fn test_raw_invalid() {
assert!(syn::parse_str::<Stmt>("let _ = &raw x;").is_err());
}
#[test]
fn test_none_group() {
// <Ø async fn f() {} Ø>
let tokens = TokenStream::from_iter(vec![TokenTree::Group(Group::new(
Delimiter::None,
TokenStream::from_iter(vec![
TokenTree::Ident(Ident::new("async", Span::call_site())),
TokenTree::Ident(Ident::new("fn", Span::call_site())),
TokenTree::Ident(Ident::new("f", Span::call_site())),
TokenTree::Group(Group::new(Delimiter::Parenthesis, TokenStream::new())),
TokenTree::Group(Group::new(Delimiter::Brace, TokenStream::new())),
]),
))]);
snapshot!(tokens as Stmt, @r###"
Item(Item::Fn {
vis: Inherited,
sig: Signature {
asyncness: Some,
ident: "f",
generics: Generics,
output: Default,
},
block: Block,
})
"###);
}