1 files changed, 44 insertions, 0 deletions
diff --git a/accessible/tests/browser/e10s/browser_events_hide.js b/accessible/tests/browser/e10s/browser_events_hide.js
new file mode 100644
index 0000000000..77bd70c0f6
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+++ b/accessible/tests/browser/e10s/browser_events_hide.js
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+/* 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";
+
+/**
+ * Test hide event and its interface:
+ *   - targetParent
+ *   - targetNextSibling
+ *   - targetPrevSibling
+ */
+addAccessibleTask(
+  `
+  <div id="parent">
+    <div id="previous"></div>
+    <div id="to-hide"></div>
+    <div id="next"></div>
+  </div>`,
+  async function (browser, accDoc) {
+    let acc = findAccessibleChildByID(accDoc, "to-hide");
+    let onHide = waitForEvent(EVENT_HIDE, acc);
+    await invokeSetStyle(browser, "to-hide", "visibility", "hidden");
+    let event = await onHide;
+    let hideEvent = event.QueryInterface(Ci.nsIAccessibleHideEvent);
+
+    is(
+      getAccessibleDOMNodeID(hideEvent.targetParent),
+      "parent",
+      "Correct target parent."
+    );
+    is(
+      getAccessibleDOMNodeID(hideEvent.targetNextSibling),
+      "next",
+      "Correct target next sibling."
+    );
+    is(
+      getAccessibleDOMNodeID(hideEvent.targetPrevSibling),
+      "previous",
+      "Correct target previous sibling."
+    );
+  },
+  { iframe: true, remoteIframe: true }
+);