1 files changed, 47 insertions, 0 deletions
diff --git a/toolkit/content/tests/browser/browser_about_networking.js b/toolkit/content/tests/browser/browser_about_networking.js
new file mode 100644
index 0000000000..bab285904c
--- /dev/null
+++ b/toolkit/content/tests/browser/browser_about_networking.js
@@ -0,0 +1,47 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+"use strict";
+
+add_task(async function test_first() {
+  registerCleanupFunction(() => {
+    // Must clear mode first, otherwise we'll have non-local connections to
+    // the cloudflare URL.
+    Services.prefs.clearUserPref("network.trr.mode");
+    Services.prefs.clearUserPref("network.trr.uri");
+  });
+
+  await BrowserTestUtils.withNewTab(
+    "about:networking#dns",
+    async function (browser) {
+      ok(!browser.isRemoteBrowser, "Browser should not be remote.");
+      await ContentTask.spawn(browser, null, async function () {
+        let url_tbody = content.document.getElementById("dns_trr_url");
+        info(url_tbody);
+        is(
+          url_tbody.children[0].children[0].textContent,
+          "https://mozilla.cloudflare-dns.com/dns-query"
+        );
+        is(url_tbody.children[0].children[1].textContent, "0");
+      });
+    }
+  );
+
+  Services.prefs.setCharPref("network.trr.uri", "https://localhost/testytest");
+  Services.prefs.setIntPref("network.trr.mode", 2);
+  await BrowserTestUtils.withNewTab(
+    "about:networking#dns",
+    async function (browser) {
+      ok(!browser.isRemoteBrowser, "Browser should not be remote.");
+      await ContentTask.spawn(browser, null, async function () {
+        let url_tbody = content.document.getElementById("dns_trr_url");
+        info(url_tbody);
+        is(
+          url_tbody.children[0].children[0].textContent,
+          "https://localhost/testytest"
+        );
+        is(url_tbody.children[0].children[1].textContent, "2");
+      });
+    }
+  );
+});