text: // Copyright (c) 2014, Thomas Dahlstrom All rights reserved. Redistribution
  // and use in source and binary forms, with or without modification, are
  // permitted provided that the following conditions are met:
  // // 1. Redistributions of source code must retain the above copyright
  // notice, this list of conditions and the following disclaimer.
  // 2. Redistributions in binary form must reproduce the above copyright
  // notice, this list of conditions and the following disclaimer in the
  // documentation and/or other materials provided with the distribution.
  // 3. Neither the name of the copyright holder nor the names of its
  // contributors may be used to endorse or promote products derived from
  // this software without specific prior written permission. 
  // // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
  // IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
  // TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
  // PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  // HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
  // TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
  // PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
  // LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
  // NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
  // SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  
  /*---
  description: >
      The SortCompare abstract operation calls ToString() for  identical
      elements (step 14/15)
  author: Thomas Dahlstrom (tdahlstrom@gmail.com)
  ---*/
  
  var counter = 0;
  var object = {
      toString: function(){
          counter++;
          return "";
      }
  };
  
  [object, object].sort();
  if (counter < 2) {
    // sort calls ToString() for each element at least once
    $ERROR('#1: [object, object].sort(); counter < 22. Actual: ' + (counter));
  }
  