1 files changed, 84 insertions, 0 deletions
diff --git a/dom/workers/test/eventDispatch_worker.js b/dom/workers/test/eventDispatch_worker.js
new file mode 100644
index 0000000000..57bbc99aa3
--- /dev/null
+++ b/dom/workers/test/eventDispatch_worker.js
@@ -0,0 +1,84 @@
+/**
+ * Any copyright is dedicated to the Public Domain.
+ * http://creativecommons.org/publicdomain/zero/1.0/
+ */
+const fakeEventType = "foo";
+
+function testEventTarget(event) {
+  if (event.target !== self) {
+    throw new Error("Event has a bad target!");
+  }
+  if (event.currentTarget) {
+    throw new Error("Event has a bad currentTarget!");
+  }
+  postMessage(event.data);
+}
+
+addEventListener(
+  fakeEventType,
+  function (event) {
+    throw new Error("Trusted event listener received untrusted event!");
+  },
+  false,
+  false
+);
+
+addEventListener(
+  fakeEventType,
+  function (event) {
+    if (event.target !== self || event.currentTarget !== self) {
+      throw new Error("Fake event has bad target!");
+    }
+    if (event.isTrusted) {
+      throw new Error("Event should be untrusted!");
+    }
+    event.stopImmediatePropagation();
+    postMessage(event.data);
+  },
+  false,
+  true
+);
+
+addEventListener(
+  fakeEventType,
+  function (event) {
+    throw new Error(
+      "This shouldn't get called because of stopImmediatePropagation."
+    );
+  },
+  false,
+  true
+);
+
+var count = 0;
+onmessage = function (event) {
+  if (event.target !== self || event.currentTarget !== self) {
+    throw new Error("Event has bad target!");
+  }
+
+  if (!count++) {
+    var exception;
+    try {
+      self.dispatchEvent(event);
+    } catch (e) {
+      exception = e;
+    }
+
+    if (!exception) {
+      throw new Error("Recursive dispatch didn't fail!");
+    }
+
+    event = new MessageEvent(fakeEventType, {
+      bubbles: event.bubbles,
+      cancelable: event.cancelable,
+      data: event.data,
+      origin: "*",
+      source: null,
+    });
+    self.dispatchEvent(event);
+
+    return;
+  }
+
+  setTimeout(testEventTarget, 0, event);
+};