rustdoc: Add test for #27759

Author: m4rw3r

src/test/rustdoc/issue-27759.rs

@@ -0,0 +1,25 @@
+// Copyright 2015 The Rust Project Developers. See the COPYRIGHT
+// file at the top-level directory of this distribution and at
+// http://rust-lang.org/COPYRIGHT.
+//
+// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+// option. This file may not be copied, modified, or distributed
+// except according to those terms.
+
+#![feature(staged_api)]
+#![staged_api]
+#![doc(issue_tracker_base_url = "http://issue_url/")]
+
+// @has issue_27759/unstable/index.html
+// @has - '<code>test</code>'
+// @has - '<a href="http://issue_url/27759">#27759</a>'
+#[unstable(feature="test", issue="27759")]
+pub mod unstable {
+    // @has issue_27759/unstable/fn.issue.html
+    // @has - '<code>test_function</code>'
+    // @has - '<a href="http://issue_url/1234567890">#1234567890</a>'
+    #[unstable(feature="test_function", issue="1234567890")]
+    pub fn issue() {}
+}