1 files changed, 53 insertions, 0 deletions
diff --git a/browser/modules/test/browser/browser_Telemetry_numberOfSiteOrigins.js b/browser/modules/test/browser/browser_Telemetry_numberOfSiteOrigins.js
new file mode 100644
index 0000000000..9ce5602eda
--- /dev/null
+++ b/browser/modules/test/browser/browser_Telemetry_numberOfSiteOrigins.js
@@ -0,0 +1,53 @@
+/* eslint-disable mozilla/no-arbitrary-setTimeout */
+/* Any copyright is dedicated to the Public Domain.
+ * http://creativecommons.org/publicdomain/zero/1.0/
+ */
+
+/**
+ * This file tests page reload key combination telemetry
+ */
+
+"use strict";
+
+ChromeUtils.defineESModuleGetters(this, {
+  TelemetryTestUtils: "resource://testing-common/TelemetryTestUtils.sys.mjs",
+});
+
+const gTestRoot = getRootDirectory(gTestPath).replace(
+  "chrome://mochitests/content",
+  "http://mochi.test:8888"
+);
+
+const { TimedPromise } = ChromeUtils.importESModule(
+  "chrome://remote/content/marionette/sync.sys.mjs"
+);
+
+async function run_test(count) {
+  const histogram = TelemetryTestUtils.getAndClearHistogram(
+    "FX_NUMBER_OF_UNIQUE_SITE_ORIGINS_ALL_TABS"
+  );
+
+  let newTab = await BrowserTestUtils.openNewForegroundTab({
+    gBrowser,
+    opening: gTestRoot + "contain_iframe.html",
+    waitForStateStop: true,
+  });
+
+  await new Promise(resolve =>
+    setTimeout(function () {
+      window.requestIdleCallback(resolve);
+    }, 1000)
+  );
+
+  if (count < 2) {
+    await BrowserTestUtils.removeTab(newTab);
+    await run_test(count + 1);
+  } else {
+    TelemetryTestUtils.assertHistogram(histogram, 2, 1);
+    await BrowserTestUtils.removeTab(newTab);
+  }
+}
+
+add_task(async function test_telemetryMoreSiteOrigin() {
+  await run_test(1);
+});