1 files changed, 31 insertions, 0 deletions
diff --git a/devtools/client/performance-new/test/browser/browser_aboutprofiling-rtl.js b/devtools/client/performance-new/test/browser/browser_aboutprofiling-rtl.js
new file mode 100644
index 0000000000..dfed3c432b
--- /dev/null
+++ b/devtools/client/performance-new/test/browser/browser_aboutprofiling-rtl.js
@@ -0,0 +1,31 @@
+/* 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/. */
+
+"use strict";
+
+add_task(async function () {
+  await withAboutProfiling(async document => {
+    is(document.dir, "ltr", "About profiling has the expected direction ltr");
+    is(
+      document.documentElement.getAttribute("lang"),
+      "en-US",
+      "About profiling has the expected lang"
+    );
+  });
+});
+
+add_task(async function () {
+  await SpecialPowers.pushPrefEnv({
+    set: [["intl.l10n.pseudo", "bidi"]],
+  });
+
+  await withAboutProfiling(async document => {
+    is(document.dir, "rtl", "About profiling has the expected direction rtl");
+    is(
+      document.documentElement.getAttribute("lang"),
+      "en-US",
+      "About profiling has the expected lang"
+    );
+  });
+});