util: Add unit test for `Unserializable`

tests/unit/util/Cargo.toml

@@ -17,6 +17,11 @@ path = "../../../components/plugins"
 
 [dependencies]
 app_units = {version = "0.1", features = ["plugins"]}
-libc = "0.2"
 euclid = {version = "0.4", features = ["plugins"]}
+libc = "0.2"
+serde = "0.6"
+serde_macros = "0.6"
+
+[dependencies.ipc-channel]
+git = "https://github.com/servo/ipc-channel"
 

tests/unit/util/ipc.rs

@@ -0,0 +1,34 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * 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/. */
+
+use ipc_channel::ipc;
+use std::sync::mpsc::channel;
+use util::ipc::Unserializable;
+
+#[derive(Debug, PartialEq, Eq, Serialize, Deserialize)]
+enum Dummy {
+    Serializable(i32),
+    Unserializable(Unserializable<i32>),
+}
+
+#[test]
+fn test_serializable() {
+    let (tx, rx) = ipc::channel().unwrap();
+    tx.send(Dummy::Serializable(4)).unwrap();
+    assert_eq!(rx.recv().unwrap(), Dummy::Serializable(4));
+}
+
+#[test]
+fn test_unserializable_in_process() {
+    let (tx, rx) = channel();
+    tx.send(Dummy::Unserializable(Unserializable::new(4))).unwrap();
+    assert_eq!(rx.recv().unwrap(), Dummy::Unserializable(Unserializable::new(4)));
+}
+
+#[test]
+#[should_panic]
+fn test_unserializable_over_ipc() {
+    let (tx, _rx) = ipc::channel().unwrap();
+    tx.send(Dummy::Unserializable(Unserializable::new(4))).unwrap();
+}

tests/unit/util/lib.rs

@@ -5,11 +5,15 @@
 #![cfg_attr(test, feature(plugin, custom_derive, heap_api))]
 #![cfg_attr(test, plugin(plugins))]
 #![feature(alloc)]
+#![feature(plugin)]
+#![plugin(serde_macros)]
 
 extern crate alloc;
 extern crate app_units;
 extern crate euclid;
+extern crate ipc_channel;
 extern crate libc;
+extern crate serde;
 extern crate util;
 
 #[cfg(test)] mod cache;
@@ -19,3 +23,4 @@ extern crate util;
 #[cfg(test)] mod mem;
 #[cfg(test)] mod str;
 #[cfg(test)] mod opts;
+#[cfg(test)] mod ipc;