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+<!DOCTYPE html>
+<html class="reftest-wait">
+<title>Registering a property causes invalidation for applied value</title>
+<link rel="help" href="https://drafts.css-houdini.org/css-paint-api/">
+<link rel="match" href="parse-input-arguments-ref.html">
+<script src="/common/reftest-wait.js"></script>
+<script src="/common/worklet-reftest.js"></script>
+<body>
+<style>
+#target {
+ background: paint(geometry);
+ width: 100px;
+ height: 100px;
+ --length: 100px;
+}
+</style>
+<div id="target"></div>
+<script id="code" type="text/worklet">
+registerPaint('geometry', class {
+ static get inputProperties() { return ['--length']; }
+ paint(ctx, geom, styleMap) {
+ let value = styleMap.get('--length');
+ let pass = value.value === 100 && value.unit === 'px';
+ ctx.fillStyle = pass ? 'green' : 'red';
+ ctx.fillRect(0, 0, geom.width, geom.height);
+ }
+});
+</script>
+
+<script>
+ async function test() {
+ getComputedStyle(target);
+ let code = document.getElementById('code').textContent;
+ await importWorklet(CSS.paintWorklet, code);
+ await workletPainted();
+ CSS.registerProperty({
+ name: '--length',
+ syntax: '<length>',
+ initialValue: '0px',
+ inherits: false
+ });
+ await workletPainted();
+ takeScreenshot();
+ }
+
+ test();
+</script>
+</body>
+</html>
+
+