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+<!DOCTYPE html>
+<html>
+<head>
+<meta charset="utf-8">
+<title>Motion Path Module Level 1: path serialization</title>
+<link rel="author" title="Eric Willigers" href="mailto:ericwilligers@chromium.org">
+<link rel="help" href="https://drafts.fxtf.org/motion-1/">
+<h:meta name="assert" content="computed offset-path is serialized using absolute commands"/>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+</head>
+<body>
+<div id="target"></div>
+<script>
+'use strict';
+
+test(function() {
+  var target = document.getElementById('target');
+
+  target.style.offsetPath = 'path("m 10 20 q 30 60 40 50 q 100 70 90 80")';
+  assert_equals(target.style.offsetPath, 'path("m 10 20 q 30 60 40 50 q 100 70 90 80")');
+  assert_equals(getComputedStyle(target).offsetPath, 'path("M 10 20 Q 40 80 50 70 Q 150 140 140 150")');
+
+  target.style.offsetPath = "path('M 0 0 L 100 100 m 0 100 l 100 0 Z l 160 20 Z')";
+  assert_equals(target.style.offsetPath, 'path("M 0 0 L 100 100 m 0 100 l 100 0 Z l 160 20 Z")');
+  assert_equals(getComputedStyle(target).offsetPath, 'path("M 0 0 L 100 100 M 100 200 L 200 200 Z L 260 220 Z")');
+
+  target.style.offsetPath = 'path("m 10 20   l 20 30   Z   l 50 60   Z   m 70 80   l 90 60   Z   t 70 120")';
+  assert_equals(target.style.offsetPath, 'path("m 10 20 l 20 30 Z l 50 60 Z m 70 80 l 90 60 Z t 70 120")');
+  assert_equals(getComputedStyle(target).offsetPath, 'path("M 10 20 L 30 50 Z L 60 80 Z M 80 100 L 170 160 Z T 150 220")');
+
+  target.style.offsetPath = 'path("m 10.0 170.0 h 90.00 v 30.00 m 0 0 s 1 2 3 4 z c 9 8 7 6 5 4")';
+  assert_equals(target.style.offsetPath, 'path("m 10 170 h 90 v 30 m 0 0 s 1 2 3 4 Z c 9 8 7 6 5 4")');
+  assert_equals(getComputedStyle(target).offsetPath, 'path("M 10 170 H 100 V 200 M 100 200 S 101 202 103 204 Z C 109 208 107 206 105 204")');
+
+  target.style.offsetPath = '  path(  "m 10 20 a 10 20 30 1 0 40 50 a 110 120 30 1 1 140 50"  )  ';
+  assert_equals(target.style.offsetPath, 'path("m 10 20 a 10 20 30 1 0 40 50 a 110 120 30 1 1 140 50")');
+  assert_equals(getComputedStyle(target).offsetPath, 'path("M 10 20 A 10 20 30 1 0 50 70 A 110 120 30 1 1 190 120")');
+
+  target.style.offsetPath = 'path("M 1 2 H 3 v 4 h 5 V 6 h 7 v 8")';
+  assert_equals(target.style.offsetPath, 'path("M 1 2 H 3 v 4 h 5 V 6 h 7 v 8")');
+  assert_equals(getComputedStyle(target).offsetPath, 'path("M 1 2 H 3 V 6 H 8 V 6 H 15 V 14")');
+});
+</script>
+</body>
+</html>