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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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     22 // SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     23 
     24 description(
     25 'This test checks lastIndexOf for various values in an array'
     26 );
     27 
     28 
     29 var testArray = [2, 5, 9, 2];
     30 var lastIndex = 0;
     31 
     32 lastIndex = testArray.lastIndexOf(2,-500);
     33 shouldBe('lastIndex', '-1');
     34 lastIndex = testArray.lastIndexOf(9,500);
     35 shouldBe('lastIndex', '2');
     36 lastIndex = testArray.lastIndexOf(2);
     37 shouldBe('lastIndex', '3');
     38 lastIndex = testArray.lastIndexOf(7);
     39 shouldBe('lastIndex', '-1');
     40 lastIndex = testArray.lastIndexOf(2, 3);
     41 shouldBe('lastIndex', '3');
     42 lastIndex = testArray.lastIndexOf(2, 2);
     43 shouldBe('lastIndex', '0');
     44 lastIndex = testArray.lastIndexOf(2, -2);
     45 shouldBe('lastIndex', '0');
     46 lastIndex = testArray.lastIndexOf(2, -1);
     47 shouldBe('lastIndex', '3');
     48 
     49 delete testArray[1];
     50 
     51 lastIndex = testArray.lastIndexOf(undefined);
     52 shouldBe('lastIndex', '-1');
     53 
     54 delete testArray[3];
     55 
     56 lastIndex = testArray.lastIndexOf(undefined);
     57 shouldBe('lastIndex', '-1');
     58 
     59 testArray = new Array(20);
     60 
     61 lastIndex = testArray.lastIndexOf(undefined);
     62 shouldBe('lastIndex', '-1');
     63 
     64 testArray[19] = undefined;
     65 
     66 lastIndex = testArray.lastIndexOf(undefined);
     67 shouldBe('lastIndex', '19');
     68 
     69 lastIndex = testArray.lastIndexOf(undefined, 18);
     70 shouldBe('lastIndex', '-1');
     71 
     72 delete testArray[19];
     73 
     74 lastIndex = testArray.lastIndexOf(undefined);
     75 shouldBe('lastIndex', '-1');
     76