1 files changed, 95 insertions, 0 deletions
diff --git a/accessible/tests/browser/fission/browser_reframe_root.js b/accessible/tests/browser/fission/browser_reframe_root.js
new file mode 100644
index 0000000000..d7123109f4
--- /dev/null
+++ b/accessible/tests/browser/fission/browser_reframe_root.js
@@ -0,0 +1,95 @@
+/* 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/states.js */
+/* import-globals-from ../../mochitest/role.js */
+loadScripts(
+  { name: "role.js", dir: MOCHITESTS_DIR },
+  { name: "states.js", dir: MOCHITESTS_DIR }
+);
+
+addAccessibleTask(
+  `<input id="textbox" value="hello"/>`,
+  async function (browser, iframeDocAcc, contentDocAcc) {
+    info(
+      "Check that the IFRAME and the IFRAME document are accessible initially."
+    );
+    let iframeAcc = findAccessibleChildByID(contentDocAcc, DEFAULT_IFRAME_ID);
+    ok(!isDefunct(iframeAcc), "IFRAME should be accessible");
+    ok(!isDefunct(iframeDocAcc), "IFRAME document should be accessible");
+
+    info("Move the IFRAME under a new hidden root.");
+    let onEvents = waitForEvent(EVENT_REORDER, contentDocAcc);
+    await SpecialPowers.spawn(browser, [DEFAULT_IFRAME_ID], id => {
+      const doc = content.document;
+      const root = doc.createElement("div");
+      root.style.display = "none";
+      doc.body.appendChild(root);
+      root.appendChild(doc.getElementById(id));
+    });
+    await onEvents;
+
+    ok(
+      isDefunct(iframeAcc),
+      "IFRAME accessible should be defunct when hidden."
+    );
+    ok(
+      isDefunct(iframeDocAcc),
+      "IFRAME document's accessible should be defunct when the IFRAME is hidden."
+    );
+    ok(
+      !findAccessibleChildByID(contentDocAcc, DEFAULT_IFRAME_ID),
+      "No accessible for an IFRAME present."
+    );
+    ok(
+      !findAccessibleChildByID(contentDocAcc, DEFAULT_IFRAME_DOC_BODY_ID),
+      "No accessible for the IFRAME document present."
+    );
+
+    info("Move the IFRAME back under the content document's body.");
+    onEvents = waitForEvents([
+      [EVENT_REORDER, contentDocAcc],
+      [
+        EVENT_STATE_CHANGE,
+        event => {
+          const scEvent = event.QueryInterface(nsIAccessibleStateChangeEvent);
+          const id = getAccessibleDOMNodeID(event.accessible);
+          return (
+            id === DEFAULT_IFRAME_DOC_BODY_ID &&
+            scEvent.state === STATE_BUSY &&
+            scEvent.isEnabled === false
+          );
+        },
+      ],
+    ]);
+    await SpecialPowers.spawn(browser, [DEFAULT_IFRAME_ID], id => {
+      content.document.body.appendChild(content.document.getElementById(id));
+    });
+    await onEvents;
+
+    iframeAcc = findAccessibleChildByID(contentDocAcc, DEFAULT_IFRAME_ID);
+    const newiframeDocAcc = iframeAcc.firstChild;
+
+    ok(!isDefunct(iframeAcc), "IFRAME should be accessible");
+    is(iframeAcc.childCount, 1, "IFRAME accessible should have a single child");
+    ok(!isDefunct(newiframeDocAcc), "IFRAME document should be accessible");
+    ok(
+      isDefunct(iframeDocAcc),
+      "Original IFRAME document accessible should be defunct."
+    );
+    isnot(
+      iframeAcc.firstChild,
+      iframeDocAcc,
+      "A new accessible is created for a IFRAME document."
+    );
+    is(
+      iframeAcc.firstChild,
+      newiframeDocAcc,
+      "A new accessible for a IFRAME document is the child of the IFRAME accessible"
+    );
+  },
+  { topLevel: false, iframe: true, remoteIframe: true }
+);