1 files changed, 76 insertions, 0 deletions
diff --git a/dom/messagechannel/tests/mm_messageChannel.js b/dom/messagechannel/tests/mm_messageChannel.js
new file mode 100644
index 0000000000..3bd0f5be47
--- /dev/null
+++ b/dom/messagechannel/tests/mm_messageChannel.js
@@ -0,0 +1,76 @@
+/* eslint-env mozilla/frame-script */
+
+function debug(msg) {
+  dump("[mmMessageChannelChild]" + msg + "\n");
+}
+
+/**
+ * Preparation Test
+ */
+let port;
+let toString = Object.prototype.toString;
+
+(function prepare() {
+  debug("Script loaded.");
+  addTestReceiver();
+  sendAsyncMessage("mmMessagePort:finishScriptLoad");
+})();
+
+function ok(condition, message) {
+  debug("condition: " + condition + ", " + message + "\n");
+  if (!condition) {
+    sendAsyncMessage("mmMessagePort:fail", { message });
+    throw "failed check: " + message;
+  }
+}
+
+function is(a, b, message) {
+  ok(a === b, message);
+}
+
+/**
+ * Testing codes.
+ */
+function addTestReceiver() {
+  addMessageListener("BasicTest:PortCreated", basicTest);
+  addMessageListener("CloseTest:PortCreated", closeTest);
+  addMessageListener("EmptyTest:PortCreated", emptyTest);
+  addMessageListener("NotTransferableTest:PortCreated", notTransferableTest);
+}
+
+function basicTest(msg) {
+  port = msg.ports[0];
+  is(toString.call(port), "[object MessagePort]", "created MessagePort.");
+
+  port.onmessage = message => {
+    is(message.data, "BasicTest:StartTest", "Replied message is correct.");
+    port.postMessage("BasicTest:TestOK");
+  };
+
+  sendAsyncMessage("BasicTest:FinishPrepare", { message: "OK" });
+}
+
+function closeTest(msg) {
+  port = msg.ports[0];
+  is(toString.call(port), "[object MessagePort]", "created MessagePort.");
+
+  port.onmessage = message => {
+    ok(message.data, "CloseTest:StartTest", "Replied message is correct.");
+    port.postMessage("CloseTest:TestOK");
+  };
+
+  port.close();
+
+  sendAsyncMessage("CloseTest:FinishPrepare", { message: "OK" });
+}
+
+function emptyTest(msg) {
+  let portSize = msg.ports.length;
+  is(portSize, 0, "transfered port size is zero.");
+
+  sendAsyncMessage("EmptyTest:FinishPrepare", { message: "OK" });
+}
+
+function notTransferableTest(msg) {
+  sendAsyncMessage("NotTransferableTest:FinishPrepare", { message: "OK" });
+}