1 files changed, 32 insertions, 0 deletions
diff --git a/tests/ui/proc-macro/auxiliary/custom-quote.rs b/tests/ui/proc-macro/auxiliary/custom-quote.rs
new file mode 100644
index 00000000000..3b7811748ed
--- /dev/null
+++ b/tests/ui/proc-macro/auxiliary/custom-quote.rs
@@ -0,0 +1,32 @@
+// force-host
+// no-prefer-dynamic
+// ignore-tidy-linelength
+
+#![feature(proc_macro_quote)]
+#![crate_type = "proc-macro"]
+
+extern crate proc_macro;
+use std::iter::FromIterator;
+use std::str::FromStr;
+use proc_macro::*;
+
+#[proc_macro]
+pub fn custom_quote(input: TokenStream) -> TokenStream {
+    let mut tokens: Vec<_> = input.into_iter().collect();
+    assert_eq!(tokens.len(), 1, "Unexpected input: {:?}", tokens);
+    match tokens.pop() {
+        Some(TokenTree::Ident(ident)) => {
+            assert_eq!(ident.to_string(), "my_ident");
+
+            let proc_macro_crate = TokenStream::from_str("::proc_macro").unwrap();
+            let quoted_span = proc_macro::quote_span(proc_macro_crate, ident.span());
+            let prefix = TokenStream::from_str(r#"let mut ident = proc_macro::Ident::new("my_ident", proc_macro::Span::call_site());"#).unwrap();
+            let set_span_method = TokenStream::from_str("ident.set_span").unwrap();
+            let set_span_arg = TokenStream::from(TokenTree::Group(Group::new(Delimiter::Parenthesis, quoted_span)));
+            let suffix = TokenStream::from_str(";proc_macro::TokenStream::from(proc_macro::TokenTree::Ident(ident))").unwrap();
+            let full_stream = TokenStream::from_iter([prefix, set_span_method, set_span_arg, suffix]);
+            full_stream
+        }
+        _ => unreachable!()
+    }
+}