Make tests/units/* compile without warnings in non-test mode

(if not usefully)

tests/unit/gfx/lib.rs

@@ -2,6 +2,8 @@
  * License, v. 2.0. If a copy of the MPL was not distributed with this
  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
 
+#![cfg(test)]
+
 extern crate gfx;
 
-#[cfg(test)] mod text_util;
+mod text_util;

tests/unit/layout/lib.rs

@@ -2,7 +2,6 @@
  * License, v. 2.0. If a copy of the MPL was not distributed with this
  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
 
-extern crate layout;
-#[macro_use] extern crate size_of_test;
-
+#[cfg(all(test, target_pointer_width = "64"))] extern crate layout;
+#[cfg(all(test, target_pointer_width = "64"))] #[macro_use] extern crate size_of_test;
 #[cfg(all(test, target_pointer_width = "64"))] mod size_of;

tests/unit/metrics/lib.rs

@@ -2,6 +2,8 @@
  * License, v. 2.0. If a copy of the MPL was not distributed with this
  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
 
+#![cfg(test)]
+
 extern crate euclid;
 extern crate gfx;
 extern crate gfx_traits;
@@ -13,7 +15,5 @@ extern crate profile_traits;
 extern crate style;
 extern crate time;
 
-#[cfg(test)]
 mod interactive_time;
-#[cfg(test)]
 mod paint_time;

tests/unit/msg/lib.rs

@@ -2,7 +2,6 @@
  * License, v. 2.0. If a copy of the MPL was not distributed with this
  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
 
-extern crate msg;
-#[macro_use] extern crate size_of_test;
-
+#[cfg(all(test, target_pointer_width = "64"))] extern crate msg;
+#[cfg(all(test, target_pointer_width = "64"))] #[macro_use] extern crate size_of_test;
 #[cfg(all(test, target_pointer_width = "64"))] mod size_of;

tests/unit/net/lib.rs

@@ -2,6 +2,8 @@
  * License, v. 2.0. If a copy of the MPL was not distributed with this
  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
 
+#![cfg(test)]
+
 extern crate cookie as cookie_rs;
 extern crate devtools_traits;
 extern crate flate2;
@@ -19,18 +21,18 @@ extern crate time;
 extern crate unicase;
 extern crate url;
 
-#[cfg(test)] mod chrome_loader;
-#[cfg(test)] mod cookie;
-#[cfg(test)] mod cookie_http_state;
-#[cfg(test)] mod data_loader;
-#[cfg(test)] mod file_loader;
-#[cfg(test)] mod fetch;
-#[cfg(test)] mod mime_classifier;
-#[cfg(test)] mod resource_thread;
-#[cfg(test)] mod hsts;
-#[cfg(test)] mod http_loader;
-#[cfg(test)] mod filemanager_thread;
-#[cfg(test)] mod subresource_integrity;
+mod chrome_loader;
+mod cookie;
+mod cookie_http_state;
+mod data_loader;
+mod fetch;
+mod file_loader;
+mod filemanager_thread;
+mod hsts;
+mod http_loader;
+mod mime_classifier;
+mod resource_thread;
+mod subresource_integrity;
 
 use devtools_traits::DevtoolsControlMsg;
 use hyper::server::{Handler, Listening, Server};

tests/unit/net_traits/lib.rs

@@ -2,10 +2,12 @@
  * License, v. 2.0. If a copy of the MPL was not distributed with this
  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
 
+#![cfg(test)]
+
 extern crate net_traits;
 
-#[cfg(test)] mod image;
-#[cfg(test)] mod pub_domains;
+mod image;
+mod pub_domains;
 
 #[test]
 fn test_trim_http_whitespace() {

tests/unit/profile/lib.rs

@@ -2,10 +2,11 @@
  * License, v. 2.0. If a copy of the MPL was not distributed with this
  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
 
+#![cfg(test)]
+
 extern crate ipc_channel;
 extern crate profile;
 extern crate profile_traits;
 extern crate servo_allocator;
 
-#[cfg(test)]
 mod time;