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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 19:33:14 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 19:33:14 +0000 |
commit | 36d22d82aa202bb199967e9512281e9a53db42c9 (patch) | |
tree | 105e8c98ddea1c1e4784a60a5a6410fa416be2de /third_party/rust/syn/tests/test_grouping.rs | |
parent | Initial commit. (diff) | |
download | firefox-esr-upstream.tar.xz firefox-esr-upstream.zip |
Adding upstream version 115.7.0esr.upstream/115.7.0esrupstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'third_party/rust/syn/tests/test_grouping.rs')
-rw-r--r-- | third_party/rust/syn/tests/test_grouping.rs | 52 |
1 files changed, 52 insertions, 0 deletions
diff --git a/third_party/rust/syn/tests/test_grouping.rs b/third_party/rust/syn/tests/test_grouping.rs new file mode 100644 index 0000000000..9eb7eee9b7 --- /dev/null +++ b/third_party/rust/syn/tests/test_grouping.rs @@ -0,0 +1,52 @@ +#[macro_use] +mod macros; + +use proc_macro2::{Delimiter, Group, Literal, Punct, Spacing, TokenStream, TokenTree}; +use std::iter::FromIterator; +use syn::Expr; + +#[test] +fn test_grouping() { + let tokens: TokenStream = TokenStream::from_iter(vec![ + TokenTree::Literal(Literal::i32_suffixed(1)), + TokenTree::Punct(Punct::new('+', Spacing::Alone)), + TokenTree::Group(Group::new( + Delimiter::None, + TokenStream::from_iter(vec![ + TokenTree::Literal(Literal::i32_suffixed(2)), + TokenTree::Punct(Punct::new('+', Spacing::Alone)), + TokenTree::Literal(Literal::i32_suffixed(3)), + ]), + )), + TokenTree::Punct(Punct::new('*', Spacing::Alone)), + TokenTree::Literal(Literal::i32_suffixed(4)), + ]); + + assert_eq!(tokens.to_string(), "1i32 + 2i32 + 3i32 * 4i32"); + + snapshot!(tokens as Expr, @r###" + Expr::Binary { + left: Expr::Lit { + lit: 1i32, + }, + op: Add, + right: Expr::Binary { + left: Expr::Group { + expr: Expr::Binary { + left: Expr::Lit { + lit: 2i32, + }, + op: Add, + right: Expr::Lit { + lit: 3i32, + }, + }, + }, + op: Mul, + right: Expr::Lit { + lit: 4i32, + }, + }, + } + "###); +} |