1 files changed, 73 insertions, 0 deletions
diff --git a/accessible/tests/browser/fission/browser_take_focus.js b/accessible/tests/browser/fission/browser_take_focus.js
new file mode 100644
index 0000000000..7ec037566d
--- /dev/null
+++ b/accessible/tests/browser/fission/browser_take_focus.js
@@ -0,0 +1,73 @@
+/* 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 */
+loadScripts(
+  { name: "role.js", dir: MOCHITESTS_DIR },
+  { name: "states.js", dir: MOCHITESTS_DIR }
+);
+
+addAccessibleTask(
+  `<div role="group"><input id="textbox" value="hello"/></div>`,
+  async function (browser, iframeDocAcc, contentDocAcc) {
+    const textbox = findAccessibleChildByID(iframeDocAcc, "textbox");
+    const iframe = findAccessibleChildByID(contentDocAcc, "default-iframe-id");
+    const iframeDoc = findAccessibleChildByID(
+      contentDocAcc,
+      "default-iframe-body-id"
+    );
+    const root = getRootAccessible(document);
+
+    testStates(textbox, STATE_FOCUSABLE, 0, STATE_FOCUSED);
+
+    let onFocus = waitForEvent(EVENT_FOCUS, textbox);
+    textbox.takeFocus();
+    await onFocus;
+
+    testStates(textbox, STATE_FOCUSABLE | STATE_FOCUSED, 0);
+
+    is(
+      getAccessibleDOMNodeID(contentDocAcc.focusedChild),
+      "textbox",
+      "correct focusedChild from top doc"
+    );
+
+    is(
+      getAccessibleDOMNodeID(iframeDocAcc.focusedChild),
+      "textbox",
+      "correct focusedChild from iframe"
+    );
+
+    is(
+      getAccessibleDOMNodeID(root.focusedChild),
+      "textbox",
+      "correct focusedChild from root"
+    );
+
+    ok(!iframe.focusedChild, "correct focusedChild from iframe (null)");
+
+    onFocus = waitForEvent(EVENT_FOCUS, iframeDoc);
+    iframeDoc.takeFocus();
+    await onFocus;
+
+    is(
+      getAccessibleDOMNodeID(contentDocAcc.focusedChild),
+      "default-iframe-body-id",
+      "correct focusedChild of child doc from top doc"
+    );
+    is(
+      getAccessibleDOMNodeID(iframe.focusedChild),
+      "default-iframe-body-id",
+      "correct focusedChild of child doc from iframe"
+    );
+    is(
+      getAccessibleDOMNodeID(root.focusedChild),
+      "default-iframe-body-id",
+      "correct focusedChild of child doc from root"
+    );
+  },
+  { topLevel: false, iframe: true, remoteIframe: true }
+);