auto merge of #16892 : andrew-d/rust/andrew-fix-test-reexports, r=sfackler

Fixes #16597

I'm not 100% sure this is the correct way to handle this - but I wasn't able to find a better way without doing way more refactoring of the code that I was comfortable with.  Comments and criticism are appreciated 😄

src/test/run-pass/issue-16597-empty.rs

@@ -0,0 +1,14 @@
+// Copyright 2014 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.
+
+// compile-flags:--test
+
+// This verifies that the test generation doesn't crash when we have
+// no tests - for more information, see PR #16892.

src/test/run-pass/issue-16597.rs

@@ -0,0 +1,21 @@
+// Copyright 2014 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.
+
+// compile-flags:--test
+// ignore-pretty turns out the pretty-printer doesn't handle gensym'd things...
+
+#![feature(globs)]
+
+mod test {
+    use super::*;
+
+    #[test]
+    fn test(){}
+}