vendor/syn/tests/test_pat.rs

   1 use quote::quote;
   2 use syn::{Item, Pat, Stmt};
   3
   4 #[test]
   5 fn test_pat_ident() {
   6     match syn::parse2(quote!(self)).unwrap() {
   7         Pat::Ident(_) => (),
   8         value => panic!("expected PatIdent, got {:?}", value),
   9     }
  10 }
  11
  12 #[test]
  13 fn test_pat_path() {
  14     match syn::parse2(quote!(self::CONST)).unwrap() {
  15         Pat::Path(_) => (),
  16         value => panic!("expected PatPath, got {:?}", value),
  17     }
  18 }
  19
  20 #[test]
  21 fn test_leading_vert() {
  22     // https://github.com/rust-lang/rust/blob/1.43.0/src/test/ui/or-patterns/remove-leading-vert.rs
  23
  24     syn::parse_str::<Item>("fn f() {}").unwrap();
  25     syn::parse_str::<Item>("fn fun1(| A: E) {}").unwrap_err();
  26     syn::parse_str::<Item>("fn fun2(|| A: E) {}").unwrap_err();
  27
  28     syn::parse_str::<Stmt>("let | () = ();").unwrap();
  29     syn::parse_str::<Stmt>("let (| A): E;").unwrap_err();
  30     syn::parse_str::<Stmt>("let (|| A): (E);").unwrap_err();
  31     syn::parse_str::<Stmt>("let (| A,): (E,);").unwrap_err();
  32     syn::parse_str::<Stmt>("let [| A]: [E; 1];").unwrap_err();
  33     syn::parse_str::<Stmt>("let [|| A]: [E; 1];").unwrap_err();
  34     syn::parse_str::<Stmt>("let TS(| A): TS;").unwrap_err();
  35     syn::parse_str::<Stmt>("let TS(|| A): TS;").unwrap_err();
  36     syn::parse_str::<Stmt>("let NS { f: | A }: NS;").unwrap_err();
  37     syn::parse_str::<Stmt>("let NS { f: || A }: NS;").unwrap_err();
  38 }