Editing Correct vs. incorrect className contains

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Test case details

Title *

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Preparation code

Preparation code HTML (this will be inserted in the <body> of a valid HTML5 document in standards mode) (useful when testing DOM operations or including libraries)

<div id="testNode" class="foo bar baz">
</div>
<script>
  var className = "className";
  var spaces = /\s+/;

function incorrect(node, classStr) {
    return ((' ' + dom.byId(node)[className].trim() + ' ').indexOf(' ' + classStr.trim() + ' ') >= 0);
  }

function correct(node, classStr) {
    node = dom.byId(node);
    classStr = classStr.trim();

if ((' ' + node[className] + ' ').indexOf(' ' + classStr + ' ') > -1) {
      return true;
    }
    var classes = node[className].trim().split(spaces),
        map = {};
    for (var i = 0; i < classes.length; i++) {
      map[classes[i]] = true;
    }
    classStr = stringToArray(classStr);
    for (i = 0; i < classStr.length; i++) {
      if (!(classStr[i] in map)) {
        return false;
      }
    }
    return true;
  }
  var dom = {
    byId: function(node) {
      if (typeof node !== 'string') {
        return node;
      }
      return document.getElementById(node);
    }
  };
</script>

Title

Async (check if this is an asynchronous test)

Code

var classStr = 'baz bar';
correct(node, classStr);