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      1 // Copyright 2013 the V8 project authors. All rights reserved.
      2 // Copyright (C) 2005, 2006, 2007, 2008, 2009 Apple Inc. All rights reserved.
      3 //
      4 // Redistribution and use in source and binary forms, with or without
      5 // modification, are permitted provided that the following conditions
      6 // are met:
      7 // 1.  Redistributions of source code must retain the above copyright
      8 //     notice, this list of conditions and the following disclaimer.
      9 // 2.  Redistributions in binary form must reproduce the above copyright
     10 //     notice, this list of conditions and the following disclaimer in the
     11 //     documentation and/or other materials provided with the distribution.
     12 //
     13 // THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' AND ANY
     14 // EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
     15 // WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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     21 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
     22 // SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     23 
     24 description("Test to ensure that we handle caching of prototype chains containing dictionaries.");
     25 
     26 var Test = function(){};
     27 
     28 var methodCount = 65;
     29 
     30 for (var i = 0; i < methodCount; i++){
     31     Test.prototype['myMethod' + i] = function(){};
     32 }
     33 
     34 var test1 = new Test();
     35 
     36 for (var k in test1);
     37 
     38 Test.prototype.myAdditionalMethod = function(){};
     39 var test2 = new Test();
     40 var j = k;
     41 var foundNewPrototypeProperty = false;
     42 for (var k in test2){
     43     if ("myAdditionalMethod" == k) foundNewPrototypeProperty = true;
     44 }
     45 shouldBeTrue('foundNewPrototypeProperty');
     46 
     47 var Test = function(){};
     48 for (var i = 0; i < methodCount; i++){
     49     Test.prototype['myMethod' + i] = function(){};
     50 }
     51 var test1 = new Test();
     52 
     53 for (var k in test1);
     54 
     55 delete (Test.prototype)[k]
     56 var test2 = new Test();
     57 var j = k;
     58 var foundRemovedPrototypeProperty = false;
     59 for (var k in test2){
     60     if (j == k) foundRemovedPrototypeProperty = true;
     61 }
     62 shouldBeFalse("foundRemovedPrototypeProperty");
     63 
     64 var Test = function(){};
     65 for (var i = 0; i < methodCount; i++){
     66     Test.prototype['myMethod' + i] = function(){};
     67 }
     68 
     69 function update(test) {
     70     test.newProperty = true;
     71 }
     72 var test1 = new Test();
     73 update(test1);
     74 
     75 var test2 = new Test();
     76 update(test2);
     77 
     78 var test3 = new Test();
     79 update(test3);
     80 var calledNewPrototypeSetter = false;
     81 Test.prototype.__defineSetter__("newProperty", function(){ calledNewPrototypeSetter = true; });
     82 var test4 = new Test();
     83 update(test4);
     84 shouldBeTrue('calledNewPrototypeSetter');
     85 
     86 var test4 = {__proto__:{prop:"on prototype"}};
     87 for (var i = 0; i < 200; i++)
     88     test4[i]=[i];
     89 
     90 var test5 = {__proto__:{__proto__:{prop:"on prototype's prototype"}}};
     91 for (var i = 0; i < 200; i++)
     92     test5[i]=[i];
     93 
     94 getTestProperty = function(o) {
     95     return o.prop;
     96 }
     97 
     98 getTestProperty(test4);
     99 getTestProperty(test4);
    100 shouldBe("getTestProperty(test4)", '"on prototype"');
    101 test4.prop = "on self";
    102 shouldBe("getTestProperty(test4)", '"on self"');
    103 
    104 getTestProperty = function(o) {
    105     return o.prop;
    106 }
    107 
    108 getTestProperty(test5);
    109 getTestProperty(test5);
    110 shouldBe("getTestProperty(test5)", '"on prototype\'s prototype"');
    111 test5.prop = "on self";
    112 shouldBe("getTestProperty(test5)", '"on self"');
    113