1 files changed, 38 insertions, 0 deletions
diff --git a/accessible/tests/browser/e10s/browser_treeupdate_listener.js b/accessible/tests/browser/e10s/browser_treeupdate_listener.js
new file mode 100644
index 0000000000..735f7871af
--- /dev/null
+++ b/accessible/tests/browser/e10s/browser_treeupdate_listener.js
@@ -0,0 +1,38 @@
+/* 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 strict";
+
+/* import-globals-from ../../mochitest/role.js */
+loadScripts({ name: "role.js", dir: MOCHITESTS_DIR });
+
+addAccessibleTask(
+  '<span id="parent"><span id="child"></span></span>',
+  async function (browser, accDoc) {
+    is(
+      findAccessibleChildByID(accDoc, "parent"),
+      null,
+      "Check that parent is not accessible."
+    );
+    is(
+      findAccessibleChildByID(accDoc, "child"),
+      null,
+      "Check that child is not accessible."
+    );
+
+    let onReorder = waitForEvent(EVENT_REORDER, matchContentDoc);
+    // Add an event listener to parent.
+    await invokeContentTask(browser, [], () => {
+      content.window.dummyListener = () => {};
+      content.document
+        .getElementById("parent")
+        .addEventListener("click", content.window.dummyListener);
+    });
+    await onReorder;
+
+    let tree = { TEXT: [] };
+    testAccessibleTree(findAccessibleChildByID(accDoc, "parent"), tree);
+  },
+  { iframe: true, remoteIframe: true }
+);