rust/compiler/rustc_span/src/symbol/tests.rs
Nicholas Nethercote 94a36d2ce5 Use FxIndexSet in the symbol interner.
It makes the code a little nicer.

As part of this, the interner's `Default` impl is removed and `prefill`
is used in a test instead.
2023-11-03 07:19:41 +11:00

25 lines
710 B
Rust

use super::*;
use crate::create_default_session_globals_then;
#[test]
fn interner_tests() {
let i = Interner::prefill(&[]);
// first one is zero:
assert_eq!(i.intern("dog"), Symbol::new(0));
// re-use gets the same entry:
assert_eq!(i.intern("dog"), Symbol::new(0));
// different string gets a different #:
assert_eq!(i.intern("cat"), Symbol::new(1));
assert_eq!(i.intern("cat"), Symbol::new(1));
// dog is still at zero
assert_eq!(i.intern("dog"), Symbol::new(0));
}
#[test]
fn without_first_quote_test() {
create_default_session_globals_then(|| {
let i = Ident::from_str("'break");
assert_eq!(i.without_first_quote().name, kw::Break);
});
}