1 files changed, 45 insertions, 0 deletions
diff --git a/tests/ui/proc-macro/auxiliary/span-api-tests.rs b/tests/ui/proc-macro/auxiliary/span-api-tests.rs
new file mode 100644
index 00000000000..ad1e770a4dc
--- /dev/null
+++ b/tests/ui/proc-macro/auxiliary/span-api-tests.rs
@@ -0,0 +1,45 @@
+// force-host
+// no-prefer-dynamic
+
+#![crate_type = "proc-macro"]
+#![feature(proc_macro_span)]
+
+extern crate proc_macro;
+
+use proc_macro::*;
+
+// Re-emits the input tokens by parsing them from strings
+#[proc_macro]
+pub fn reemit(input: TokenStream) -> TokenStream {
+    input.to_string().parse().unwrap()
+}
+
+#[proc_macro]
+pub fn assert_fake_source_file(input: TokenStream) -> TokenStream {
+    for tk in input {
+        let source_file = tk.span().source_file();
+        assert!(!source_file.is_real(), "Source file is real: {:?}", source_file);
+    }
+
+    "".parse().unwrap()
+}
+
+#[proc_macro]
+pub fn assert_source_file(input: TokenStream) -> TokenStream {
+    for tk in input {
+        let source_file = tk.span().source_file();
+        assert!(source_file.is_real(), "Source file is not real: {:?}", source_file);
+    }
+
+    "".parse().unwrap()
+}
+
+#[proc_macro]
+pub fn macro_stringify(input: TokenStream) -> TokenStream {
+    let mut tokens = input.into_iter();
+    let first_span = tokens.next().expect("first token").span();
+    let last_span = tokens.last().map(|x| x.span()).unwrap_or(first_span);
+    let span = first_span.join(last_span).expect("joined span");
+    let src = span.source_text().expect("source_text");
+    TokenTree::Literal(Literal::string(&src)).into()
+}