4 use crate::with_default_globals;
5 use crate::tests::string_to_stream;
6 use syntax_pos::{Span, BytePos};
8 fn string_to_ts(string: &str) -> TokenStream {
9 string_to_stream(string.to_owned())
12 fn sp(a: u32, b: u32) -> Span {
13 Span::with_root_ctxt(BytePos(a), BytePos(b))
18 with_default_globals(|| {
19 let test_res = string_to_ts("foo::bar::baz");
20 let test_fst = string_to_ts("foo::bar");
21 let test_snd = string_to_ts("::baz");
22 let eq_res = TokenStream::from_streams(smallvec![test_fst, test_snd]);
23 assert_eq!(test_res.trees().count(), 5);
24 assert_eq!(eq_res.trees().count(), 5);
25 assert_eq!(test_res.eq_unspanned(&eq_res), true);
30 fn test_to_from_bijection() {
31 with_default_globals(|| {
32 let test_start = string_to_ts("foo::bar(baz)");
33 let test_end = test_start.trees().collect();
34 assert_eq!(test_start, test_end)
40 with_default_globals(|| {
41 let test_res = string_to_ts("foo");
42 let test_eqs = string_to_ts("foo");
43 assert_eq!(test_res, test_eqs)
49 with_default_globals(|| {
50 let test_res = string_to_ts("::bar::baz");
51 let test_eqs = string_to_ts("::bar::baz");
52 assert_eq!(test_res, test_eqs)
58 with_default_globals(|| {
59 let test_res = string_to_ts("");
60 let test_eqs = string_to_ts("");
61 assert_eq!(test_res, test_eqs)
67 with_default_globals(|| {
68 let test_res = string_to_ts("::bar::baz");
69 let test_eqs = string_to_ts("bar::baz");
70 assert_eq!(test_res == test_eqs, false)
76 with_default_globals(|| {
77 let test_res = string_to_ts("(bar,baz)");
78 let test_eqs = string_to_ts("bar,baz");
79 assert_eq!(test_res == test_eqs, false)
85 with_default_globals(|| {
86 let test0: TokenStream = Vec::<TokenTree>::new().into_iter().collect();
87 let test1: TokenStream =
88 TokenTree::token(token::Ident(Name::intern("a"), false), sp(0, 1)).into();
89 let test2 = string_to_ts("foo(bar::baz)");
91 assert_eq!(test0.is_empty(), true);
92 assert_eq!(test1.is_empty(), false);
93 assert_eq!(test2.is_empty(), false);
99 with_default_globals(|| {
100 let mut builder = TokenStreamBuilder::new();
101 builder.push(TokenTree::token(token::Dot, sp(0, 1)).joint());
102 builder.push(TokenTree::token(token::Dot, sp(1, 2)).joint());
103 builder.push(TokenTree::token(token::Dot, sp(2, 3)));
104 let stream = builder.build();
105 assert!(stream.eq_unspanned(&string_to_ts("...")));
106 assert_eq!(stream.trees().count(), 1);