text: /// Copyright (c) 2012 Ecma International.  All rights reserved. 
  /**
   * @path ch15/15.4/15.4.4/15.4.4.20/15.4.4.20-6-5.js
   * @description Array.prototype.filter returns an empty array if 'length' is 0 (subclassed Array, length overridden to '0' (type conversion))
   */
  
  
  function testcase() {
    foo.prototype = new Array(1, 2, 3);
    function foo() {}
    var f = new foo();
    f.length = '0';
    
    function cb(){}
    var a = f.filter(cb);
    
    if (Array.isArray(a) &&
        a.length === 0) {
      return true;
    }
   }
  runTestCase(testcase);
  