1 files changed, 29 insertions, 0 deletions
diff --git a/devtools/client/framework/browser-toolbox/test/browser_browser_toolbox_rtl.js b/devtools/client/framework/browser-toolbox/test/browser_browser_toolbox_rtl.js
new file mode 100644
index 0000000000..558be1a16c
--- /dev/null
+++ b/devtools/client/framework/browser-toolbox/test/browser_browser_toolbox_rtl.js
@@ -0,0 +1,29 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+// There are shutdown issues for which multiple rejections are left uncaught.
+// See bug 1018184 for resolving these issues.
+const { PromiseTestUtils } = ChromeUtils.importESModule(
+  "resource://testing-common/PromiseTestUtils.sys.mjs"
+);
+PromiseTestUtils.allowMatchingRejectionsGlobally(/File closed/);
+
+// On debug test machine, it takes about 50s to run the test.
+requestLongerTimeout(4);
+
+// Test that DevTools panels are rendered in "rtl" (right-to-left) in the Browser Toolbox.
+add_task(async function () {
+  await pushPref("intl.l10n.pseudo", "bidi");
+
+  const ToolboxTask = await initBrowserToolboxTask();
+  await ToolboxTask.importFunctions({});
+
+  const dir = await ToolboxTask.spawn(null, async () => {
+    /* global gToolbox */
+    const inspector = await gToolbox.selectTool("inspector");
+    return inspector.panelDoc.dir;
+  });
+  is(dir, "rtl", "Inspector panel has the expected direction");
+
+  await ToolboxTask.destroy();
+});