text: // Copyright 2009 the Sputnik authors.  All rights reserved.
  // This code is governed by the BSD license found in the LICENSE file.
  
  /*---
  info: Operator x + y uses [[Default Value]]
  es5id: 11.6.1_A2.2_T1
  description: If Type(value) is Object, evaluate ToPrimitive(value, Number)
  ---*/
  
  //CHECK#1
  if ({valueOf: function() {return 1}} + 1 !== 2) {
    $ERROR('#1: {valueOf: function() {return 1}} + 1 === 2. Actual: ' + ({valueOf: function() {return 1}} + 1));
  }
  
  //CHECK#2
  if ({valueOf: function() {return 1}, toString: function() {return 0}} + 1 !== 2) {
    $ERROR('#2: {valueOf: function() {return 1}, toString: function() {return 0}} + 1 === 2. Actual: ' + ({valueOf: function() {return 1}, toString: function() {return 0}} + 1));
  }
  
  //CHECK#3
  if ({valueOf: function() {return 1}, toString: function() {return {}}} + 1 !== 2) {
    $ERROR('#3: {valueOf: function() {return 1}, toString: function() {return {}}} + 1 === 2. Actual: ' + ({valueOf: function() {return 1}, toString: function() {return {}}} + 1));
  }
  
  //CHECK#4
  try {
    if ({valueOf: function() {return 1}, toString: function() {throw "error"}} + 1 !== 2) {
      $ERROR('#4.1: {valueOf: function() {return 1}, toString: function() {throw "error"}} + 1 === 2. Actual: ' + ({valueOf: function() {return 1}, toString: function() {throw "error"}} + 1));
    }
  }
  catch (e) {
    if (e === "error") {
      $ERROR('#4.2: {valueOf: function() {return 1}, toString: function() {throw "error"}} + 1 not throw "error"');
    } else {
      $ERROR('#4.3: {valueOf: function() {return 1}, toString: function() {throw "error"}} + 1 not throw Error. Actual: ' + (e));
    }
  }
  
  //CHECK#5
  if (1 + {toString: function() {return 1}} !== 2) {
    $ERROR('#5: 1 + {toString: function() {return 1}} === 2. Actual: ' + (1 + {toString: function() {return 1}}));
  }
  
  //CHECK#6
  if (1 + {valueOf: function() {return {}}, toString: function() {return 1}} !== 2) {
    $ERROR('#6: 1 + {valueOf: function() {return {}}, toString: function() {return 1}} === 2. Actual: ' + (1 + {valueOf: function() {return {}}, toString: function() {return 1}}));
  }
  
  //CHECK#7
  try {
    1 + {valueOf: function() {throw "error"}, toString: function() {return 1}};
    $ERROR('#7.1: 1 + {valueOf: function() {throw "error"}, toString: function() {return 1}} throw "error". Actual: ' + (1 + {valueOf: function() {throw "error"}, toString: function() {return 1}}));
  }  
  catch (e) {
    if (e !== "error") {
      $ERROR('#7.2: 1 + {valueOf: function() {throw "error"}, toString: function() {return 1}} throw "error". Actual: ' + (e));
    } 
  }
  
  //CHECK#8
  try {
    1 + {valueOf: function() {return {}}, toString: function() {return {}}};
    $ERROR('#8.1: 1 + {valueOf: function() {return {}}, toString: function() {return {}}} throw TypeError. Actual: ' + (1 + {valueOf: function() {return {}}, toString: function() {return {}}}));
  }  
  catch (e) {
    if ((e instanceof TypeError) !== true) {
      $ERROR('#8.2: 1 + {valueOf: function() {return {}}, toString: function() {return {}}} throw TypeError. Actual: ' + (e));
    } 
  }
  