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+<!DOCTYPE HTML>
+<html>
+<head>
+ <title>CSS Variables Allowed Syntax</title>
+ <link rel="author" title="L. David Baron" href="https://dbaron.org/">
+ <link rel="author" title="Mozilla Corporation" href="http://mozilla.com/" />
+ <link rel="help" href="http://www.w3.org/TR/css3-conditional/#the-cssgroupingrule-interface">
+ <meta name="assert" content="requirements in definition of insertRule">
+ <script src="/resources/testharness.js"></script>
+ <script src="/resources/testharnessreport.js"></script>
+<style id="style">
+@media print {}
+</style>
+<script id="metadata_cache">/*
+{
+ "rule_type": {},
+ "rule_length": {},
+ "insert_import_throws": {},
+ "insert_index_throws1": {},
+ "insert_index_throws2": {},
+ "insert_media_succeed": {},
+ "insert_style_succeed": {},
+ "insert_bad_media_throw": {},
+ "insert_empty_throw": {},
+ "insert_garbage_after_media_throw": {},
+ "insert_garbage_after_style_throw": {},
+ "insert_two_media_throw": {},
+ "insert_style_media_throw": {},
+ "insert_media_style_throw": {},
+ "insert_two_style_throw": {},
+ "insert_retval": {}
+}
+*/</script>
+</head>
+<body onload="run()">
+<div id=log></div>
+<div id="test"></div>
+<script>
+
+ var sheet = document.getElementById("style").sheet;
+
+ var grouping_rule = sheet.cssRules[0];
+
+ test(function() {
+ assert_equals(grouping_rule.type, CSSRule.MEDIA_RULE,
+ "Rule type of @media rule");
+ },
+ "rule_type");
+
+ test(function() {
+ assert_equals(grouping_rule.cssRules.length, 0,
+ "Starting cssRules.length of @media rule");
+ },
+ "rule_length");
+
+ test(function() {
+ assert_throws("HIERARCHY_REQUEST_ERR",
+ function() {
+ grouping_rule.insertRule("@import url(foo.css);", 0);
+ },
+ "inserting a disallowed rule should throw HIERARCHY_REQUEST_ERR");
+ },
+ "insert_import_throws");
+
+ test(function() {
+ assert_throws("INDEX_SIZE_ERR",
+ function() {
+ grouping_rule.insertRule("p { color: green }", 1);
+ },
+ "inserting at a bad index throws INDEX_SIZE_ERR");
+ },
+ "insert_index_throws1");
+ test(function() {
+ grouping_rule.insertRule("p { color: green }", 0);
+ assert_equals(grouping_rule.cssRules.length, 1,
+ "Modified cssRules.length of @media rule");
+ grouping_rule.insertRule("p { color: blue }", 1);
+ assert_equals(grouping_rule.cssRules.length, 2,
+ "Modified cssRules.length of @media rule");
+ grouping_rule.insertRule("p { color: aqua }", 1);
+ assert_equals(grouping_rule.cssRules.length, 3,
+ "Modified cssRules.length of @media rule");
+ assert_throws("INDEX_SIZE_ERR",
+ function() {
+ grouping_rule.insertRule("p { color: green }", 4);
+ },
+ "inserting at a bad index throws INDEX_SIZE_ERR");
+ assert_equals(grouping_rule.cssRules.length, 3,
+ "Modified cssRules.length of @media rule");
+ },
+ "insert_index_throws2");
+
+ test(function() {
+ while (grouping_rule.cssRules.length > 0) {
+ grouping_rule.deleteRule(0);
+ }
+ grouping_rule.insertRule("@media print {}", 0);
+ assert_equals(grouping_rule.cssRules.length, 1,
+ "Modified cssRules.length of @media rule");
+ assert_equals(grouping_rule.cssRules[0].type, CSSRule.MEDIA_RULE,
+ "inserting syntactically correct media rule succeeds");
+ },
+ "insert_media_succeed");
+ test(function() {
+ while (grouping_rule.cssRules.length > 0) {
+ grouping_rule.deleteRule(0);
+ }
+ grouping_rule.insertRule("p { color: yellow }", 0);
+ assert_equals(grouping_rule.cssRules.length, 1,
+ "Modified cssRules.length of @media rule");
+ assert_equals(grouping_rule.cssRules[0].type, CSSRule.STYLE_RULE,
+ "inserting syntactically correct style rule succeeds");
+ },
+ "insert_style_succeed");
+ test(function() {
+ while (grouping_rule.cssRules.length > 0) {
+ grouping_rule.deleteRule(0);
+ }
+ assert_throws("SYNTAX_ERR",
+ function() {
+ grouping_rule.insertRule("@media bad syntax;", 0);
+ },
+ "inserting syntactically invalid rule throws syntax error");
+ assert_equals(grouping_rule.cssRules.length, 0,
+ "Modified cssRules.length of @media rule");
+ },
+ "insert_bad_media_throw");
+ test(function() {
+ while (grouping_rule.cssRules.length > 0) {
+ grouping_rule.deleteRule(0);
+ }
+ assert_throws("SYNTAX_ERR",
+ function() {
+ grouping_rule.insertRule("", 0);
+ },
+ "inserting empty rule throws syntax error");
+ assert_equals(grouping_rule.cssRules.length, 0,
+ "Modified cssRules.length of @media rule");
+ },
+ "insert_empty_throw");
+ test(function() {
+ while (grouping_rule.cssRules.length > 0) {
+ grouping_rule.deleteRule(0);
+ }
+ assert_throws("SYNTAX_ERR",
+ function() {
+ grouping_rule.insertRule("@media print {} foo", 0);
+ },
+ "inserting rule with garbage afterwards throws syntax error");
+ assert_equals(grouping_rule.cssRules.length, 0,
+ "Modified cssRules.length of @media rule");
+ },
+ "insert_garbage_after_media_throw");
+ test(function() {
+ while (grouping_rule.cssRules.length > 0) {
+ grouping_rule.deleteRule(0);
+ }
+ assert_throws("SYNTAX_ERR",
+ function() {
+ grouping_rule.insertRule("p { color: yellow } foo", 0);
+ },
+ "inserting rule with garbage afterwards throws syntax error");
+ assert_equals(grouping_rule.cssRules.length, 0,
+ "Modified cssRules.length of @media rule");
+ },
+ "insert_garbage_after_style_throw");
+ test(function() {
+ while (grouping_rule.cssRules.length > 0) {
+ grouping_rule.deleteRule(0);
+ }
+ assert_throws("SYNTAX_ERR",
+ function() {
+ grouping_rule.insertRule("@media print {} @media print {}", 0);
+ },
+ "inserting multiple rules throws syntax error");
+ assert_equals(grouping_rule.cssRules.length, 0,
+ "Modified cssRules.length of @media rule");
+ },
+ "insert_two_media_throw");
+ test(function() {
+ while (grouping_rule.cssRules.length > 0) {
+ grouping_rule.deleteRule(0);
+ }
+ assert_throws("SYNTAX_ERR",
+ function() {
+ grouping_rule.insertRule("p { color: yellow } @media print {}", 0);
+ },
+ "inserting multiple rules throws syntax error");
+ assert_equals(grouping_rule.cssRules.length, 0,
+ "Modified cssRules.length of @media rule");
+ },
+ "insert_style_media_throw");
+ test(function() {
+ while (grouping_rule.cssRules.length > 0) {
+ grouping_rule.deleteRule(0);
+ }
+ assert_throws("SYNTAX_ERR",
+ function() {
+ grouping_rule.insertRule("@media print {} p { color: yellow }", 0);
+ },
+ "inserting multiple rules throws syntax error");
+ assert_equals(grouping_rule.cssRules.length, 0,
+ "Modified cssRules.length of @media rule");
+ },
+ "insert_media_style_throw");
+ test(function() {
+ while (grouping_rule.cssRules.length > 0) {
+ grouping_rule.deleteRule(0);
+ }
+ assert_throws("SYNTAX_ERR",
+ function() {
+ grouping_rule.insertRule("p { color: yellow } p { color: yellow }", 0);
+ },
+ "inserting multiple rules throws syntax error");
+ assert_equals(grouping_rule.cssRules.length, 0,
+ "Modified cssRules.length of @media rule");
+ },
+ "insert_two_style_throw");
+
+ test(function() {
+ while (grouping_rule.cssRules.length > 0) {
+ grouping_rule.deleteRule(0);
+ }
+ var res = grouping_rule.insertRule("p { color: green }", 0);
+ assert_equals(res, 0, "return value should be index");
+ assert_equals(grouping_rule.cssRules.length, 1,
+ "Modified cssRules.length of @media rule");
+ res = grouping_rule.insertRule("p { color: green }", 0);
+ assert_equals(res, 0, "return value should be index");
+ assert_equals(grouping_rule.cssRules.length, 2,
+ "Modified cssRules.length of @media rule");
+ res = grouping_rule.insertRule("p { color: green }", 2);
+ assert_equals(res, 2, "return value should be index");
+ assert_equals(grouping_rule.cssRules.length, 3,
+ "Modified cssRules.length of @media rule");
+ },
+ "insert_retval");
+
+
+</script>
+</body>
+</html>
+
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