1 files changed, 71 insertions, 0 deletions
diff --git a/dom/ipc/tests/JSWindowActor/browser_sendAsyncMessage.js b/dom/ipc/tests/JSWindowActor/browser_sendAsyncMessage.js
new file mode 100644
index 0000000000..9ba33a3936
--- /dev/null
+++ b/dom/ipc/tests/JSWindowActor/browser_sendAsyncMessage.js
@@ -0,0 +1,71 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+"use strict";
+
+declTest("asyncMessage testing", {
+  async test(browser) {
+    let parent = browser.browsingContext.currentWindowGlobal;
+    let actorParent = parent.getActor("TestWindow");
+    ok(actorParent, "JSWindowActorParent should have value.");
+
+    await ContentTask.spawn(browser, {}, async function () {
+      let child = content.windowGlobalChild;
+      let actorChild = child.getActor("TestWindow");
+      ok(actorChild, "JSWindowActorChild should have value.");
+
+      let promise = new Promise(resolve => {
+        actorChild.sendAsyncMessage("init", {});
+        actorChild.done = data => resolve(data);
+      }).then(data => {
+        ok(data.initial, "Initial should be true.");
+        ok(data.toParent, "ToParent should be true.");
+        ok(data.toChild, "ToChild should be true.");
+      });
+
+      await promise;
+    });
+  },
+});
+
+declTest("asyncMessage without both sides", {
+  async test(browser) {
+    // If we don't create a parent actor, make sure the parent actor
+    // gets created by having sent the message.
+    await ContentTask.spawn(browser, {}, async function () {
+      let child = content.windowGlobalChild;
+      let actorChild = child.getActor("TestWindow");
+      ok(actorChild, "JSWindowActorChild should have value.");
+
+      let promise = new Promise(resolve => {
+        actorChild.sendAsyncMessage("init", {});
+        actorChild.done = data => resolve(data);
+      }).then(data => {
+        ok(data.initial, "Initial should be true.");
+        ok(data.toParent, "ToParent should be true.");
+        ok(data.toChild, "ToChild should be true.");
+      });
+
+      await promise;
+    });
+  },
+});
+
+declTest("asyncMessage can transfer MessagePorts", {
+  async test(browser) {
+    await ContentTask.spawn(browser, {}, async function () {
+      let child = content.windowGlobalChild;
+      let actorChild = child.getActor("TestWindow");
+
+      let { port1, port2 } = new MessageChannel();
+      actorChild.sendAsyncMessage("messagePort", { port: port2 }, [port2]);
+      let reply = await new Promise(resolve => {
+        port1.onmessage = message => {
+          resolve(message.data);
+          port1.close();
+        };
+      });
+
+      is(reply, "Message sent from parent over a MessagePort.");
+    });
+  },
+});