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<!DOCTYPE HTML>
<html>
<!--
-->
<head>
<title>Test for Bug 649740</title>
<script src="/tests/SimpleTest/SimpleTest.js"></script>
<link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
<style id="style">
</style>
</head>
<body>
<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=649740">Mozilla Bug 649740</a>
<p id="display1"></p>
<p id="display2"></p>
<pre id="test">
<script type="application/javascript">
/** Test for Bug 649740 **/
function condition(s) {
return s.replace(/^@supports\s*/, '').replace(/ \s*{\s*}\s*$/, '');
}
var styleSheetText =
"@supports(color: green){ }\n" +
"@supports (color: green) { }\n" +
"@supports ((color: green)) { }\n" +
"@supports (color: green) and (color: blue) { }\n" +
"@supports ( Font: 20px serif ! Important) { }";
function runTest() {
var style = document.getElementById("style");
style.textContent = styleSheetText;
var sheet = style.sheet;
is(condition(sheet.cssRules[0].cssText), "(color: green)");
is(condition(sheet.cssRules[1].cssText), "(color: green)");
is(condition(sheet.cssRules[2].cssText), "((color: green))");
is(condition(sheet.cssRules[3].cssText), "(color: green) and (color: blue)");
is(condition(sheet.cssRules[4].cssText), "( Font: 20px serif ! Important)");
var cs1 = getComputedStyle(document.getElementById("display1"), "");
var cs2 = getComputedStyle(document.getElementById("display2"), "");
function check_balanced_condition(condition_inner, expected_match) {
style.textContent = "#display1, #display2 { text-decoration: overline }\n" +
"@supports " + condition_inner + "{\n" +
" #display1 { text-decoration: line-through }\n" +
"}\n" +
"#display2 { text-decoration: underline }\n";
is(cs1.textDecorationLine,
expected_match ? "line-through" : "overline",
"@supports condition \"" + condition_inner + "\" should " +
(expected_match ? "" : "NOT ") + "match");
is(cs2.textDecorationLine, "underline",
"@supports condition \"" + condition_inner + "\" should be balanced");
}
check_balanced_condition("not (color: green)", false);
check_balanced_condition("not (colour: green)", true);
check_balanced_condition("not(color: green)", false);
check_balanced_condition("not(colour: green)", false);
check_balanced_condition("not/* */(color: green)", false);
check_balanced_condition("not/* */(colour: green)", true);
check_balanced_condition("not /* */ (color: green)", false);
check_balanced_condition("not /* */ (colour: green)", true);
check_balanced_condition("(color: green) and (color: blue)", true);
check_balanced_condition("(color: green) /* */ /* */ and /* */ /* */ (color: blue)", true);
check_balanced_condition("(color: green) and(color: blue)", false);
check_balanced_condition("(color: green) and/* */(color: blue)", true);
check_balanced_condition("(color: green)and (color: blue)", true);
check_balanced_condition("(color: green) or (color: blue)", true);
check_balanced_condition("(color: green) /* */ /* */ or /* */ /* */ (color: blue)", true);
check_balanced_condition("(color: green) or(color: blue)", false);
check_balanced_condition("(color: green) or/* */(color: blue)", true);
check_balanced_condition("(color: green)or (color: blue)", true);
SimpleTest.finish();
}
SimpleTest.waitForExplicitFinish();
runTest();
</script>
</pre>
</body>
</html>