michael@0: /*
michael@0:  * Any copyright is dedicated to the Public Domain.
michael@0:  * http://creativecommons.org/licenses/publicdomain/
michael@0:  * Contributor:
michael@0:  *   Jeff Walden <jwalden+code@mit.edu>
michael@0:  */
michael@0: 
michael@0: //-----------------------------------------------------------------------------
michael@0: var BUGNUMBER = 858381;
michael@0: var summary =
michael@0:   "Array length redefinition behavior with non-configurable elements";
michael@0: 
michael@0: print(BUGNUMBER + ": " + summary);
michael@0: 
michael@0: /**************
michael@0:  * BEGIN TEST *
michael@0:  **************/
michael@0: 
michael@0: function addDataProperty(obj, prop, value, enumerable, configurable, writable)
michael@0: {
michael@0:   var desc =
michael@0:     { enumerable: enumerable,
michael@0:       configurable: configurable,
michael@0:       writable: writable,
michael@0:       value: value };
michael@0:   Object.defineProperty(obj, prop, desc);
michael@0: }
michael@0: 
michael@0: function nonstrict()
michael@0: {
michael@0:   var arr = [0, , 2, , , 5];
michael@0: 
michael@0:   addDataProperty(arr,  31415926, "foo", true,  true,  true);
michael@0:   addDataProperty(arr, 123456789, "bar", true,  true,  false);
michael@0:   addDataProperty(arr,   8675309, "qux", false, true,  true);
michael@0:   addDataProperty(arr,   1735039, "eit", false, true,  false);
michael@0:   addDataProperty(arr, 987654321, "fun", false, true,  false);
michael@0: 
michael@0:   // non-array indexes to spice things up
michael@0:   addDataProperty(arr, "foopy", "sdfsd", false, false, false);
michael@0:   addDataProperty(arr, 4294967296, "psych", true, false, false);
michael@0:   addDataProperty(arr, 4294967295, "psych", true, false, false);
michael@0: 
michael@0:   addDataProperty(arr,  27182818, "eep", false, false, false);
michael@0: 
michael@0:   // Truncate...but only as far as possible.
michael@0:   arr.length = 1;
michael@0: 
michael@0:   assertEq(arr.length, 27182819);
michael@0: 
michael@0:   var props = Object.getOwnPropertyNames(arr).sort();
michael@0:   var expected =
michael@0:     ["0", "2", "5", "1735039", "8675309", "27182818",
michael@0:      "foopy", "4294967296", "4294967295", "length"].sort();
michael@0: 
michael@0:   assertEq(props.length, expected.length);
michael@0:   for (var i = 0; i < props.length; i++)
michael@0:     assertEq(props[i], expected[i], "unexpected property: " + props[i]);
michael@0: }
michael@0: nonstrict();
michael@0: 
michael@0: function strict()
michael@0: {
michael@0:   "use strict";
michael@0: 
michael@0:   var arr = [0, , 2, , , 5];
michael@0: 
michael@0:   addDataProperty(arr,  31415926, "foo", true,  true,  true);
michael@0:   addDataProperty(arr, 123456789, "bar", true,  true,  false);
michael@0:   addDataProperty(arr,   8675309, "qux", false, true,  true);
michael@0:   addDataProperty(arr,   1735039, "eit", false, true,  false);
michael@0:   addDataProperty(arr, 987654321, "fun", false, true,  false);
michael@0: 
michael@0:   // non-array indexes to spice things up
michael@0:   addDataProperty(arr, "foopy", "sdfsd", false, false, false);
michael@0:   addDataProperty(arr, 4294967296, "psych", true, false, false);
michael@0:   addDataProperty(arr, 4294967295, "psych", true, false, false);
michael@0: 
michael@0:   addDataProperty(arr,  27182818, "eep", false, false, false);
michael@0: 
michael@0:   try
michael@0:   {
michael@0:     arr.length = 1;
michael@0:     throw new Error("didn't throw?!");
michael@0:   }
michael@0:   catch (e)
michael@0:   {
michael@0:     assertEq(e instanceof TypeError, true,
michael@0:              "non-configurable property should trigger TypeError, got " + e);
michael@0:   }
michael@0: 
michael@0:   assertEq(arr.length, 27182819);
michael@0: 
michael@0:   var props = Object.getOwnPropertyNames(arr).sort();
michael@0:   var expected =
michael@0:     ["0", "2", "5", "1735039", "8675309", "27182818",
michael@0:      "foopy", "4294967296", "4294967295", "length"].sort();
michael@0: 
michael@0:   assertEq(props.length, expected.length);
michael@0:   for (var i = 0; i < props.length; i++)
michael@0:     assertEq(props[i], expected[i], "unexpected property: " + props[i]);
michael@0: }
michael@0: strict();
michael@0: 
michael@0: /******************************************************************************/
michael@0: 
michael@0: if (typeof reportCompare === "function")
michael@0:   reportCompare(true, true);
michael@0: 
michael@0: print("Tests complete");