1 files changed, 56 insertions, 0 deletions
diff --git a/browser/extensions/formautofill/test/browser/focus-leak/browser_iframe_typecontent_input_focus.js b/browser/extensions/formautofill/test/browser/focus-leak/browser_iframe_typecontent_input_focus.js
new file mode 100644
index 0000000000..407c2b5163
--- /dev/null
+++ b/browser/extensions/formautofill/test/browser/focus-leak/browser_iframe_typecontent_input_focus.js
@@ -0,0 +1,56 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+"use strict";
+
+const URL_ROOT =
+  "chrome://mochitests/content/browser/browser/extensions/formautofill/test/browser/focus-leak/";
+
+const XUL_FRAME_URI = URL_ROOT + "doc_iframe_typecontent_input_focus.xhtml";
+const INNER_HTML_FRAME_URI =
+  URL_ROOT + "doc_iframe_typecontent_input_focus_frame.html";
+
+/**
+ * Check that focusing an input in a frame with type=content embedded in a xul
+ * document does not leak.
+ */
+add_task(async function () {
+  const doc = gBrowser.ownerDocument;
+  const linkedBrowser = gBrowser.selectedTab.linkedBrowser;
+  const browserContainer = gBrowser.getBrowserContainer(linkedBrowser);
+
+  info("Load the test page in a frame with type content");
+  const frame = doc.createXULElement("iframe");
+  frame.setAttribute("type", "content");
+  browserContainer.appendChild(frame);
+
+  info("Wait for the xul iframe to be loaded");
+  const onXulFrameLoad = BrowserTestUtils.waitForEvent(frame, "load", true);
+  frame.setAttribute("src", XUL_FRAME_URI);
+  await onXulFrameLoad;
+
+  const panelFrame = frame.contentDocument.querySelector("#html-iframe");
+
+  info("Wait for the html iframe to be loaded");
+  const onFrameLoad = BrowserTestUtils.waitForEvent(panelFrame, "load", true);
+  panelFrame.setAttribute("src", INNER_HTML_FRAME_URI);
+  await onFrameLoad;
+
+  info("Focus an input inside the iframe");
+  const focusMeInput = panelFrame.contentDocument.querySelector(".focusme");
+  const onFocus = BrowserTestUtils.waitForEvent(focusMeInput, "focus");
+  await SimpleTest.promiseFocus(panelFrame);
+  focusMeInput.focus();
+  await onFocus;
+
+  // This assert is not really meaningful, the main purpose of the test is
+  // to check against leaks.
+  is(
+    focusMeInput,
+    panelFrame.contentDocument.activeElement,
+    "The .focusme input is the active element"
+  );
+
+  info("Remove the focused input");
+  focusMeInput.remove();
+});