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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-19 00:47:55 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-19 00:47:55 +0000
commit26a029d407be480d791972afb5975cf62c9360a6 (patch)
treef435a8308119effd964b339f76abb83a57c29483 /third_party/rust/proc-macro2/tests/test_fmt.rs
parentInitial commit. (diff)
downloadfirefox-26a029d407be480d791972afb5975cf62c9360a6.tar.xz
firefox-26a029d407be480d791972afb5975cf62c9360a6.zip
Adding upstream version 124.0.1.upstream/124.0.1
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'third_party/rust/proc-macro2/tests/test_fmt.rs')
-rw-r--r--third_party/rust/proc-macro2/tests/test_fmt.rs28
1 files changed, 28 insertions, 0 deletions
diff --git a/third_party/rust/proc-macro2/tests/test_fmt.rs b/third_party/rust/proc-macro2/tests/test_fmt.rs
new file mode 100644
index 0000000000..86a4c38763
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+++ b/third_party/rust/proc-macro2/tests/test_fmt.rs
@@ -0,0 +1,28 @@
+#![allow(clippy::from_iter_instead_of_collect)]
+
+use proc_macro2::{Delimiter, Group, Ident, Span, TokenStream, TokenTree};
+use std::iter;
+
+#[test]
+fn test_fmt_group() {
+ let ident = Ident::new("x", Span::call_site());
+ let inner = TokenStream::from_iter(iter::once(TokenTree::Ident(ident)));
+ let parens_empty = Group::new(Delimiter::Parenthesis, TokenStream::new());
+ let parens_nonempty = Group::new(Delimiter::Parenthesis, inner.clone());
+ let brackets_empty = Group::new(Delimiter::Bracket, TokenStream::new());
+ let brackets_nonempty = Group::new(Delimiter::Bracket, inner.clone());
+ let braces_empty = Group::new(Delimiter::Brace, TokenStream::new());
+ let braces_nonempty = Group::new(Delimiter::Brace, inner.clone());
+ let none_empty = Group::new(Delimiter::None, TokenStream::new());
+ let none_nonempty = Group::new(Delimiter::None, inner);
+
+ // Matches libproc_macro.
+ assert_eq!("()", parens_empty.to_string());
+ assert_eq!("(x)", parens_nonempty.to_string());
+ assert_eq!("[]", brackets_empty.to_string());
+ assert_eq!("[x]", brackets_nonempty.to_string());
+ assert_eq!("{ }", braces_empty.to_string());
+ assert_eq!("{ x }", braces_nonempty.to_string());
+ assert_eq!("", none_empty.to_string());
+ assert_eq!("x", none_nonempty.to_string());
+}