1 files changed, 32 insertions, 0 deletions
diff --git a/accessible/tests/browser/e10s/browser_treeupdate_hidden.js b/accessible/tests/browser/e10s/browser_treeupdate_hidden.js
new file mode 100644
index 0000000000..d3817a003b
--- /dev/null
+++ b/accessible/tests/browser/e10s/browser_treeupdate_hidden.js
@@ -0,0 +1,32 @@
+/* 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 });
+
+async function setHidden(browser, value) {
+  let onReorder = waitForEvent(EVENT_REORDER, "container");
+  await invokeSetAttribute(browser, "child", "hidden", value);
+  await onReorder;
+}
+
+addAccessibleTask(
+  '<div id="container"><input id="child"></div>',
+  async function (browser, accDoc) {
+    let container = findAccessibleChildByID(accDoc, "container");
+
+    testAccessibleTree(container, { SECTION: [{ ENTRY: [] }] });
+
+    // Set @hidden attribute
+    await setHidden(browser, "true");
+    testAccessibleTree(container, { SECTION: [] });
+
+    // Remove @hidden attribute
+    await setHidden(browser);
+    testAccessibleTree(container, { SECTION: [{ ENTRY: [] }] });
+  },
+  { iframe: true, remoteIframe: true }
+);