1 files changed, 30 insertions, 0 deletions
diff --git a/dom/tests/browser/perfmetrics/browser_test_unresponsive.js b/dom/tests/browser/perfmetrics/browser_test_unresponsive.js
new file mode 100644
index 0000000000..940935f91a
--- /dev/null
+++ b/dom/tests/browser/perfmetrics/browser_test_unresponsive.js
@@ -0,0 +1,30 @@
+/* -*- indent-tabs-mode: nil; js-indent-level: 2 -*- */
+/* vim: set ts=2 et sw=2 tw=80: */
+/* 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/. */
+
+const ROOT_URL = "http://example.com/browser/dom/tests/browser/perfmetrics";
+const PAGE_URL = ROOT_URL + "/unresponsive.html";
+
+add_task(async function test() {
+  waitForExplicitFinish();
+
+  await BrowserTestUtils.withNewTab({ gBrowser, url: PAGE_URL }, async function(
+    browser
+  ) {
+    let dataBack = 0;
+    let tabId = gBrowser.selectedBrowser.outerWindowID;
+
+    function exploreResults(data, filterByWindowId) {
+      for (let entry of data) {
+        if (entry.windowId == tabId && entry.host != "about:blank") {
+          dataBack += 1;
+        }
+      }
+    }
+    let results = await ChromeUtils.requestPerformanceMetrics();
+    exploreResults(results);
+    Assert.ok(dataBack == 0);
+  });
+});