[text-autospace] add tests for RTL cases

Bug: 1463890
Change-Id: I4aff49b3592e418c19ecc857f67887a46c64f6a9
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/4833886
Reviewed-by: Koji Ishii <kojii@chromium.org>
Commit-Queue: Lingqi Chi <lingqi@chromium.org>
Cr-Commit-Position: refs/heads/main@{#1192819}
diff --git a/css/css-text/text-autospace/text-autospace-001.html b/css/css-text/text-autospace/text-autospace-001.html
index 1be4a72..b5fcd5a 100644
--- a/css/css-text/text-autospace/text-autospace-001.html
+++ b/css/css-text/text-autospace/text-autospace-001.html
@@ -16,6 +16,8 @@
 </style>
 <div class="test" expect="1,3">国国XX国</div>
 <div class="test" expect="3">国。XX国</div>
+<div dir="rtl" class="test" expect="1,3">国国XX国</div>
+<div dir="rtl" class="test" expect="3">国。XX国</div>
 <div class="test first-line" expect="1,3,6,8">国国XX国<br>国国XX国</div>
 <script>
 for (const element of document.getElementsByClassName('test')) {