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diff --git a/testing/web-platform/tests/css/css-grid/parsing/grid-column-shortest-serialization.html b/testing/web-platform/tests/css/css-grid/parsing/grid-column-shortest-serialization.html
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index 0000000000..868de54c35
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+++ b/testing/web-platform/tests/css/css-grid/parsing/grid-column-shortest-serialization.html
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+<!DOCTYPE html>
+<html>
+<head>
+<meta charset="utf-8">
+<link rel="author" title="Sammy Gill" href="mailto:sammy.gill@apple.com">
+<link rel="help" href="https://drafts.csswg.org/css-grid-2/#placement-shorthands"/>
+<meta name="assert" content="grid-column computed value should be the shortest serialization possible"/>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/css/support/computed-testcommon.js"></script>
+</head>
+<body>
+<div id="target"></div>
+<script>
+test_computed_value("grid-column", "auto / auto", "auto");
+test_computed_value("grid-column", "auto", "auto");
+test_computed_value("grid-column", "10 / auto", "10");
+test_computed_value("grid-column", "10", "10");
+test_computed_value("grid-column", "-10 / auto", "-10");
+test_computed_value("grid-column", "-10", "-10");
+test_computed_value("grid-column", "first / first", "first");
+test_computed_value("grid-column", "first", "first");
+test_computed_value("grid-column", "span 2 / auto", "span 2");
+test_computed_value("grid-column", "span 2", "span 2");
+test_computed_value("grid-column", "2 first / auto", "2 first");
+test_computed_value("grid-column", "2 first", "2 first");
+test_computed_value("grid-column", "span first / auto", "span first");
+test_computed_value("grid-column", "span first", "span first");
+test_computed_value("grid-column", "span 2 first / auto", "span 2 first");
+test_computed_value("grid-column", "span 2 first", "span 2 first");
+</script>
+</body>
+</html>