Move proc_macro tests to ui test

Author: dtolnay

library/proc_macro/tests/test.rs renamed to src/test/ui/proc-macro/auxiliary/api/cmp.rs

@@ -1,8 +1,10 @@
-#![feature(proc_macro_span)]
-
 use proc_macro::{LineColumn, Punct};
 
-#[test]
+pub fn test() {
+    test_line_column_ord();
+    test_punct_eq();
+}
+
 fn test_line_column_ord() {
     let line0_column0 = LineColumn { line: 0, column: 0 };
     let line0_column1 = LineColumn { line: 0, column: 1 };
@@ -11,7 +13,6 @@ fn test_line_column_ord() {
     assert!(line0_column1 < line1_column0);
 }
 
-#[test]
 fn test_punct_eq() {
     // Good enough if it typechecks, since proc_macro::Punct can't exist in a test.
     fn _check(punct: Punct) {

src/test/ui/proc-macro/auxiliary/api/mod.rs

@@ -3,14 +3,18 @@
 
 #![crate_type = "proc-macro"]
 #![crate_name = "proc_macro_api_tests"]
+#![feature(proc_macro_span)]
 #![deny(dead_code)] // catch if a test function is never called
 
 extern crate proc_macro;
 
+mod cmp;
+
 use proc_macro::TokenStream;
 
 #[proc_macro]
 pub fn run(input: TokenStream) -> TokenStream {
     assert!(input.is_empty());
+    cmp::test();
     TokenStream::new()
 }