1 files changed, 79 insertions, 0 deletions
diff --git a/testing/web-platform/tests/css/css-grid/subgrid/orthogonal-writing-mode-006.html b/testing/web-platform/tests/css/css-grid/subgrid/orthogonal-writing-mode-006.html
new file mode 100644
index 0000000000..95d1243228
--- /dev/null
+++ b/testing/web-platform/tests/css/css-grid/subgrid/orthogonal-writing-mode-006.html
@@ -0,0 +1,79 @@
+<!DOCTYPE HTML>
+<!--
+     Any copyright is dedicated to the Public Domain.
+     http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<html>
+<head>
+<meta charset="utf-8">
+<title>CSS Grid Test: Subgridded item sizing with mixed writing modes</title>
+<link rel="author" title="Ethan Jimenez" href="mailto:ethavar@microsoft.com">
+<link rel="help" href="https://drafts.csswg.org/css-grid-2">
+<link rel="stylesheet" type="text/css" href="/fonts/ahem.css">
+<link rel="match" href="orthogonal-writing-mode-006-ref.html">
+<style>
+body {
+  background: white;
+  color: black;
+  display: grid;
+  font: 20px/1 Ahem;
+  place-items: start;
+  padding: 0;
+  margin: 0;
+}
+.grid {
+  background: cyan;
+  display: grid;
+  padding: 5px;
+}
+.grid > .grid {
+  background: pink;
+  grid-template: subgrid / subgrid;
+}
+.h { writing-mode: horizontal-tb; }
+.v { writing-mode: vertical-rl; }
+</style>
+</head>
+<body>
+  <div class="grid h">
+    <div class="grid h">
+      <div class="h">1234</div>
+    </div>
+  </div>
+  <div class="grid h">
+    <div class="grid h">
+      <div class="v">1234</div>
+    </div>
+  </div>
+  <div class="grid h">
+    <div class="grid v">
+      <div class="h">1234</div>
+    </div>
+  </div>
+  <div class="grid h">
+    <div class="grid v">
+      <div class="v">1234</div>
+    </div>
+  </div>
+  <div class="grid v">
+    <div class="grid h">
+      <div class="h">1234</div>
+    </div>
+  </div>
+  <div class="grid v">
+    <div class="grid h">
+      <div class="v">1234</div>
+    </div>
+  </div>
+  <div class="grid v">
+    <div class="grid v">
+      <div class="h">1234</div>
+    </div>
+  </div>
+  <div class="grid v">
+    <div class="grid v">
+      <div class="v">1234</div>
+    </div>
+  </div>
+</body>
+</html>