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-rw-r--r--testing/web-platform/tests/css/cssom-view/offsetTopLeft-empty-inline-offset.html47
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diff --git a/testing/web-platform/tests/css/cssom-view/offsetTopLeft-empty-inline-offset.html b/testing/web-platform/tests/css/cssom-view/offsetTopLeft-empty-inline-offset.html
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index 0000000000..85abbb7c01
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+++ b/testing/web-platform/tests/css/cssom-view/offsetTopLeft-empty-inline-offset.html
@@ -0,0 +1,47 @@
+<!DOCTYPE html>
+<link rel="help" href="https://drafts.csswg.org/cssom-view-1/#extensions-to-the-htmlelement-interface">
+<script src=/resources/testharness.js></script>
+<script src=/resources/testharnessreport.js></script>
+<style>
+ .container {
+ position: relative;
+ width: 8em;
+ height: 7em;
+ padding: 1em;
+ }
+</style>
+<div class="container" style="writing-mode:horizontal-tb;">
+ offset
+ <br>offset<span class="target"></span><span>ref</span>
+</div>
+<div class="container" style="writing-mode:vertical-lr;">
+ offset
+ <br>offset<span class="target"></span><span>ref</span>
+</div>
+<div class="container" style="writing-mode:vertical-rl;">
+ offset
+ <br>offset<span class="target"></span><span>ref</span>
+</div>
+<div class="container" style="writing-mode:horizontal-tb; direction:rtl;">
+ offset
+ <br>offset<span class="target"></span><span>ref</span>
+</div>
+<div class="container" style="writing-mode:vertical-lr; direction:rtl;">
+ offset
+ <br>offset<span class="target"></span><span>ref</span>
+</div>
+<div class="container" style="writing-mode:vertical-rl; direction:rtl;">
+ offset
+ <br>offset<span class="target"></span><span>ref</span>
+</div>
+<script>
+var i = 0;
+document.querySelectorAll('span.target').forEach((target) => {
+ var ref = target.nextSibling;
+ test(() => {
+ assert_equals(target.offsetLeft, ref.offsetLeft, 'offsetLeft');
+ assert_equals(target.offsetTop, ref.offsetTop, 'offsetTop');
+ }, 'offsetTop/Left of empty inline elements should work as if they were not empty: ' + i);
+ i++;
+});
+</script>