<?xml version="1.0" encoding="UTF-8"?>
<svg xmlns="http://www.w3.org/2000/svg"
     xmlns:h="http://www.w3.org/1999/xhtml">
  <metadata>
    <h:link rel="help" href="https://www.w3.org/TR/SVG11/styling.html#StyleElement"/>
    <h:meta name="assert" content="SVGStyle objects have the properties specified in their interfaces"/>
  </metadata>
  <h:script src="/resources/testharness.js" type="text/javascript"/>
  <h:script src="/resources/testharnessreport.js" type="text/javascript"/>
  <style id="styleElement" type="text/css" media="all" title="internal style sheet" disabled="disabled">
    @import url('support/a-green.css');
    * { margin: 0; padding: 0; }
  </style>
  <script>
    var styleElement = document.getElementById("styleElement");

    var styleSheet;

    // styleElement.sheet exists and is a CSSStyleSheet
    test(function() {
        assert_idl_attribute(styleElement, "sheet");
        assert_readonly(styleElement, "sheet");
        styleSheet = styleElement.sheet;
        assert_true(styleSheet instanceof CSSStyleSheet);
    }, "sheet_property");

    // The sheet property on LinkStyle should always return the current associated style sheet.
    test(function () {
      var style = document.createElementNS("http://www.w3.org/2000/svg", "style");
      document.querySelector("svg").appendChild(style);
      var sheet1 = style.sheet;
      assert_equals(sheet1.cssRules.length, 0);
      style.appendChild(document.createTextNode("a { color: green; }"));
      assert_equals(style.sheet.cssRules.length, 1);
    }, "sheet_property_updates");

    // ownerRule, cssRules, insertRule and deleteRule properties exist on CSSStyleSheet
    // ownerRule, cssRules are read only
    test(function() {
        assert_idl_attribute(styleSheet, "ownerRule");
        assert_idl_attribute(styleSheet, "cssRules");
        assert_inherits(styleSheet, "insertRule");
        assert_inherits(styleSheet, "deleteRule");

        assert_readonly(styleSheet, "ownerRule");
        assert_readonly(styleSheet, "cssRules");
    }, "CSSStyleSheet_properties");

    var importSheet;
    // CSSStyleSheet initial property values are correct
    test(function() {
        assert_equals(styleSheet.ownerRule, null);
        assert_true(styleSheet.cssRules.length > 0);
        assert_true(styleSheet.cssRules.item(0) instanceof CSSImportRule);
        importSheet = styleSheet.cssRules.item(0).styleSheet;
    }, "CSSStyleSheet_property_values");

    // type, disabled, ownerNode, parentStyleSheet, href, title, and media properties exist on StyleSheet
    // type, ownerNode, parentStyleSheet, href, and title properties are read only
    test(function() {
        assert_idl_attribute(styleSheet, "type");
        assert_idl_attribute(styleSheet, "disabled");
        assert_idl_attribute(styleSheet, "ownerNode");
        assert_idl_attribute(styleSheet, "parentStyleSheet");
        assert_idl_attribute(styleSheet, "href");
        assert_idl_attribute(styleSheet, "title");
        assert_idl_attribute(styleSheet, "media");

        assert_readonly(styleSheet, "type");
        assert_readonly(styleSheet, "ownerNode");
        assert_readonly(styleSheet, "parentStyleSheet");
        assert_readonly(styleSheet, "href");
        assert_readonly(styleSheet, "title");
    }, "StyleSheet_properties");

    // StyleSheet initial property values are correct
    test(function() {
        assert_equals(styleSheet.type, "text/css");
        assert_equals(styleSheet.disabled, false);

        assert_equals(styleSheet.ownerNode, styleElement);
        assert_equals(importSheet.ownerNode, null);

        assert_equals(styleSheet.href, null);
        assert_regexp_match(importSheet.href, /support\/a-green.css$/);

        assert_equals(styleSheet.parentStyleSheet, null);
        assert_equals(importSheet.parentStyleSheet, styleSheet);

        assert_equals(styleSheet.title, "internal style sheet");
        assert_equals(styleSheet.media.item(0), "all");
    }, "StyleSheet_property_values");
  </script>
</svg>