Add a regression test and organize tests.

src/test/compile-fail/directory_ownership/mod_file_not_owning.rs

@@ -8,8 +8,6 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
-// compile-flags: -Z parse-only
-
 // error-pattern: cannot declare a new module at this location
 
 mod mod_file_not_owning_aux1;

src/test/compile-fail/directory_ownership/mod_file_not_owning_aux1.rs

@@ -10,4 +10,7 @@
 
 // ignore-test this is not a test
 
-mod mod_file_not_owning_aux2;
+macro_rules! m {
+    () => { mod mod_file_not_owning_aux2; }
+}
+m!();

src/test/compile-fail/directory_ownership/unowned_mod_with_path.rs

@@ -0,0 +1,15 @@
+// Copyright 2016 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.
+
+// error-pattern: cannot declare a new module at this location
+
+// This is not a directory owner since the file name is not "mod.rs".
+#[path = "mod_file_not_owning_aux1.rs"]
+mod foo;