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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
     16 // DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS BE LIABLE FOR ANY
     17 // DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
     18 // (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
     19 // LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
     20 // ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     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(
     25 "Tests that passing the global object to an array access that will arrayify to NonArrayWithArrayStorage doesn't break things."
     26 );
     27 
     28 function foo(array) {
     29     var result = 0;
     30     for (var i = 0; i < array.length; ++i)
     31         result += array[i];
     32     return result;
     33 }
     34 
     35 function bar(array) {
     36     array[1] = 42;
     37 }
     38 
     39 var array = {};
     40 array.length = 3;
     41 array[0] = 1;
     42 array[1] = 2;
     43 array[2] = 3;
     44 for (var i = 0; i < 200; ++i) {
     45     shouldBe("foo(array)", "6");
     46 
     47     var otherArray = {};
     48     bar(otherArray);
     49     shouldBe("otherArray[1]", "42");
     50 }
     51 
     52 for (var i = 0; i < 1000; ++i) {
     53     // Do strange things to ensure that the get_by_id on length goes polymorphic.
     54     var array = {};
     55     if (i % 2)
     56         array.x = 42;
     57     array.length = 3;
     58     array[0] = 1;
     59     array[2] = 3;
     60     array.__defineGetter__(1, function() { return 6; });
     61 
     62     shouldBe("foo(array)", "10");
     63 
     64     var otherArray = {};
     65     otherArray.__defineSetter__(0, function(value) { throw "error"; });
     66     bar(otherArray);
     67     shouldBe("otherArray[1]", "42");
     68 }
     69 
     70 var w = this;
     71 w[0] = 1;
     72 w.length = 1;
     73 var thingy = false;
     74 w.__defineSetter__(1, function(value) { thingy = value; });
     75 shouldBe("foo(w)", "1");
     76 shouldBe("thingy", "false");
     77 
     78 // At this point we check to make sure that bar doesn't end up either creating array storage for
     79 // the window proxy, or equally badly, storing to the already created array storage on the proxy
     80 // (since foo() may have made the mistake of creating array storage). That's why we do the setter
     81 // thingy, to detect that for index 1 we fall through the proxy to the real window object.
     82 bar(w);
     83 
     84 shouldBe("thingy", "42");
     85 shouldBe("foo(w)", "1");
     86 w.length = 2;
     87 shouldBe("foo(w)", "0/0");
     88