text: /// Copyright (c) 2009 Microsoft Corporation 
  /// 
  /// Redistribution and use in source and binary forms, with or without modification, are permitted provided
  /// that the following conditions are met: 
  ///    * Redistributions of source code must retain the above copyright notice, this list of conditions and
  ///      the following disclaimer. 
  ///    * 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.  
  ///    * Neither the name of Microsoft 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 OWNER 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.
  
  
  
  ES5Harness.registerTest({
      id: "15.4.4.19-9-12",
  
      path: "TestCases/chapter15/15.4/15.4.4/15.4.4.19/15.4.4.19-9-12.js",
  
      description: "Array.prototype.map - returns an empty array if 'length' is 0 (subclassed Array, length overridden with [])",
  
      test: function testcase() {
          function Foo() { }
          Foo.prototype = [1, 2, 3];
          var f = new Foo();
  
          f.length = [];
  
          // objects inherit the default valueOf method of the Object object;
          // that simply returns the itself. Since the default valueOf() method
          // does not return a primitive value, ES next tries to convert the object
          // to a number by calling its toString() method and converting the
          // resulting string to a number.
          //
          // The toString( ) method on Array converts the array elements to strings,
          // then returns the result of concatenating these strings, with commas in
          // between. An array with no elements converts to the empty string, which
          // converts to the number 0. If an array has a single element that is a
          // number n, the array converts to a string representation of n, which is
          // then converted back to n itself. If an array contains more than one element,
          // or if its one element is not a number, the array converts to NaN.
  
          function cb() { }
          var a = Array.prototype.map.call(f, cb);
  
          if (Array.isArray(a) && a.length === 0) {
              return true;
          }
      },
  
      precondition: function prereq() {
          return fnExists(Array.prototype.map) && fnExists(Array.isArray);
      }
  });
  