1 files changed, 56 insertions, 0 deletions
diff --git a/browser/components/extensions/test/browser/browser_ext_contentscript_cross_docGroup_adoption_xhr.js b/browser/components/extensions/test/browser/browser_ext_contentscript_cross_docGroup_adoption_xhr.js
new file mode 100644
index 0000000000..274efb71f3
--- /dev/null
+++ b/browser/components/extensions/test/browser/browser_ext_contentscript_cross_docGroup_adoption_xhr.js
@@ -0,0 +1,56 @@
+/* -*- Mode: indent-tabs-mode: nil; js-indent-level: 2 -*- */
+/* vim: set sts=2 sw=2 et tw=80: */
+"use strict";
+
+add_task(async function test_cross_docGroup_adoption() {
+  await SpecialPowers.pushPrefEnv({
+    set: [["extensions.content_web_accessible.enabled", true]],
+  });
+
+  let tab = await BrowserTestUtils.openNewForegroundTab(
+    gBrowser,
+    "http://example.com/"
+  );
+
+  let extension = ExtensionTestUtils.loadExtension({
+    manifest: {
+      content_scripts: [
+        {
+          matches: ["http://example.com/"],
+          js: ["content-script.js"],
+        },
+      ],
+      web_accessible_resources: ["blank.html"],
+    },
+
+    files: {
+      "blank.html": "<html>data</html>",
+      "content-script.js": function () {
+        let xhr = new XMLHttpRequest();
+        xhr.responseType = "document";
+        xhr.open("GET", browser.runtime.getURL("blank.html"));
+
+        xhr.onload = function () {
+          let doc = xhr.response;
+          try {
+            let node = doc.body.cloneNode(true);
+            document.body.appendChild(node);
+            browser.test.notifyPass("nodeAdopted");
+          } catch (SecurityError) {
+            browser.test.assertTrue(
+              false,
+              "The above node adoption should not fail"
+            );
+          }
+        };
+        xhr.send();
+      },
+    },
+  });
+
+  await extension.startup();
+  await extension.awaitFinish("nodeAdopted");
+  await extension.unload();
+
+  BrowserTestUtils.removeTab(tab);
+});