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<!DOCTYPE HTML>
<html>
<!--
https://bugzilla.mozilla.org/show_bug.cgi?id=649740
-->
<head>
  <title>Test for Bug 649740</title>
  <script type="application/javascript" 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, expected_match) {
    style.textContent = "#display1, #display2 { text-decoration: overline }\n" +
                        "@supports " + condition + "{\n" +
                        "  #display1 { text-decoration: line-through }\n" +
                        "}\n" +
                        "#display2 { text-decoration: underline }\n";
    is(cs1.textDecoration,
       expected_match ? "line-through" : "overline",
       "@supports condition \"" + condition + "\" should " +
       (expected_match ? "" : "NOT ") + "match");
    is(cs2.textDecoration, "underline",
       "@supports condition \"" + condition + "\" 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)", false);
  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)", false);
  check_balanced_condition("(color: green)and (color: blue)", false);
  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)", false);
  check_balanced_condition("(color: green)or (color: blue)", false);

  SimpleTest.finish();
}

SimpleTest.waitForExplicitFinish();
runTest();
</script>
</pre>
</body>
</html>