add servo_channel crate

components/channel/tests/disconnect.rs

@@ -0,0 +1,31 @@
+/* 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/. */
+
+#[macro_use]
+extern crate servo_channel;
+
+use servo_channel::{channel, ChannelError};
+
+#[test]
+fn send_after_receiver_dropped() {
+    let (sender, receiver) = channel();
+    drop(receiver);
+    assert_eq!(sender.send(1), Err(ChannelError::ChannelClosedError));
+    let sent = select! {
+        send(sender.select(), 1) => true,
+        default => false
+    };
+    assert_eq!(sent, false);
+}
+
+#[test]
+fn send_with_receiver_connected() {
+    let (sender, _receiver) = channel();
+    assert_eq!(sender.send(1), Ok(()));
+    let sent = select! {
+        send(sender.select(), 1) => true,
+        default => false
+    };
+    assert_eq!(sent, true);
+}