From 886e4197319c122d5d4167e39a76f431c28cbc3a Mon Sep 17 00:00:00 2001
From: Steve Howell <showell@zulip.com>
Date: Fri, 5 Mar 2021 15:35:06 +0000
Subject: [PATCH] node tests: Directly test how we add/remove rtl class.

---
 frontend_tests/node_tests/rtl.js | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)

diff --git a/frontend_tests/node_tests/rtl.js b/frontend_tests/node_tests/rtl.js
index 5afa936ed9..245dda0130 100644
--- a/frontend_tests/node_tests/rtl.js
+++ b/frontend_tests/node_tests/rtl.js
@@ -4,6 +4,7 @@ const {strict: assert} = require("assert");
 
 const {zrequire} = require("../zjsunit/namespace");
 const {run_test} = require("../zjsunit/test");
+const $ = require("../zjsunit/zjquery");
 
 const rtl = zrequire("rtl");
 
@@ -126,3 +127,22 @@ run_test("get_direction", () => {
         "ltr",
     );
 });
+
+run_test("set_rtl_class_for_textarea rtl", () => {
+    const textarea = $.create("some-textarea");
+    assert(!textarea.hasClass("rtl"));
+    const text = "```quote\nمرحبا";
+    textarea.val(text);
+    rtl.set_rtl_class_for_textarea(textarea);
+    assert(textarea.hasClass("rtl"));
+});
+
+run_test("set_rtl_class_for_textarea ltr", () => {
+    const textarea = $.create("some-textarea");
+    textarea.addClass("rtl");
+    assert(textarea.hasClass("rtl"));
+    const text = "```quote\nEnglish text";
+    textarea.val(text);
+    rtl.set_rtl_class_for_textarea(textarea);
+    assert(!textarea.hasClass("rtl"));
+});