1 files changed, 58 insertions, 0 deletions
diff --git a/accessible/tests/browser/e10s/browser_treeupdate_removal.js b/accessible/tests/browser/e10s/browser_treeupdate_removal.js
new file mode 100644
index 0000000000..6b5246f0bf
--- /dev/null
+++ b/accessible/tests/browser/e10s/browser_treeupdate_removal.js
@@ -0,0 +1,58 @@
+/* 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(
+  "e10s/doc_treeupdate_removal.xhtml",
+  async function (browser, accDoc) {
+    ok(
+      isAccessible(findAccessibleChildByID(accDoc, "the_table")),
+      "table should be accessible"
+    );
+
+    // Move the_table element into hidden subtree.
+    let onReorder = waitForEvent(EVENT_REORDER, matchContentDoc);
+    await invokeContentTask(browser, [], () => {
+      content.document
+        .getElementById("the_displaynone")
+        .appendChild(content.document.getElementById("the_table"));
+    });
+    await onReorder;
+
+    ok(
+      !isAccessible(findAccessibleChildByID(accDoc, "the_table")),
+      "table in display none tree shouldn't be accessible"
+    );
+    ok(
+      !isAccessible(findAccessibleChildByID(accDoc, "the_row")),
+      "row shouldn't be accessible"
+    );
+
+    // Remove the_row element (since it did not have accessible, no event needed).
+    await invokeContentTask(browser, [], () => {
+      content.document.body.removeChild(
+        content.document.getElementById("the_row")
+      );
+    });
+
+    // make sure no accessibles have stuck around.
+    ok(
+      !isAccessible(findAccessibleChildByID(accDoc, "the_row")),
+      "row shouldn't be accessible"
+    );
+    ok(
+      !isAccessible(findAccessibleChildByID(accDoc, "the_table")),
+      "table shouldn't be accessible"
+    );
+    ok(
+      !isAccessible(findAccessibleChildByID(accDoc, "the_displayNone")),
+      "display none things shouldn't be accessible"
+    );
+  },
+  { iframe: true, remoteIframe: true }
+);