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+++ b/testing/web-platform/tests/css/css-sizing/contain-intrinsic-size/parsing/contain-intrinsic-size-computed.html
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+<!DOCTYPE html>
+<html>
+<head>
+<meta charset="utf-8">
+<title>CSS Intrinsic Size Test: intrinsic-size with computed values</title>
+<link rel="author" title="Vladimir Levin" href="mailto:vmpstr@chromium.org">
+<link rel="help" href="https://drafts.csswg.org/css-sizing-4/#intrinsic-size-override">
+<meta name="assert" content="contain-intrinsic-size supports the full grammar '[none | <length>]{1,2}'.">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/css/support/computed-testcommon.js"></script>
+<style>
+#scratch { display: none }
+</style>
+</head>
+<body>
+<div style="contain-intrinsic-size: 5px 5px">
+  <div id=target></div>
+</div>
+<div id=scratch></div>
+<script>
+
+function length_ref(length) {
+  document.getElementById("scratch").style.width = length;
+  return getComputedStyle(document.getElementById("scratch")).getPropertyValue("width");
+}
+
+test_computed_value("contain-intrinsic-size", "none");
+test_computed_value("contain-intrinsic-size", "1px");
+test_computed_value("contain-intrinsic-size", "auto 1px");
+test_computed_value("contain-intrinsic-size", "auto 1px auto 1px", "auto 1px");
+test_computed_value("contain-intrinsic-size", "1px auto 1px");
+test_computed_value("contain-intrinsic-size", "2vw 3px", length_ref("2vw") + " 3px");
+test_computed_value("contain-intrinsic-size", "2px 3vh", "2px " + length_ref("3vh"));
+test_computed_value("contain-intrinsic-size", "2px 3.3vh", "2px " + length_ref("3.3vh"));
+test_computed_value("contain-intrinsic-size", "5px 5px", "5px");
+test_computed_value("contain-intrinsic-size", "inherit", "5px");
+
+test_computed_value("contain-intrinsic-width", "none");
+test_computed_value("contain-intrinsic-width", "1px");
+test_computed_value("contain-intrinsic-width", "auto 1px");
+test_computed_value("contain-intrinsic-width", "2vw", length_ref("2vw"));
+test_computed_value("contain-intrinsic-width", "3vh", length_ref("3vh"));
+
+test_computed_value("contain-intrinsic-height", "none");
+test_computed_value("contain-intrinsic-height", "1px");
+test_computed_value("contain-intrinsic-height", "auto 1px");
+test_computed_value("contain-intrinsic-height", "2vw", length_ref("2vw"));
+test_computed_value("contain-intrinsic-height", "3vh", length_ref("3vh"));
+test_computed_value("contain-intrinsic-height", "auto none");
+</script>
+</body>
+</html>
+