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<!DOCTYPE HTML>
<meta charset="utf-8">
<title>Test for chrome-only rules in constructable stylesheets</title>
<script src="chrome://mochikit/content/tests/SimpleTest/SimpleTest.js"></script>
<script>
  add_task(async function chrome_rules_constructable_stylesheets() {
    let sheet = new CSSStyleSheet();
    sheet.replaceSync(".foo { -moz-default-appearance: none }");
    is(sheet.cssRules[0].style.length, 1, "Should parse chrome-only property in chrome document");
  });
</script>