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Diffstat (limited to 'js/src/tests/non262/Array/15.4.4.5-2.js')
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diff --git a/js/src/tests/non262/Array/15.4.4.5-2.js b/js/src/tests/non262/Array/15.4.4.5-2.js new file mode 100644 index 0000000000..5198297f5f --- /dev/null +++ b/js/src/tests/non262/Array/15.4.4.5-2.js @@ -0,0 +1,189 @@ +/* -*- tab-width: 2; indent-tabs-mode: nil; js-indent-level: 2 -*- */ +/* This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ + + +/** + File Name: 15.4.4.5-2.js + ECMA Section: Array.prototype.sort(comparefn) + Description: + + This test file tests cases in which the compare function is supplied. + In this cases, the sort creates a reverse sort. + + The elements of this array are sorted. The sort is not necessarily stable. + If comparefn is provided, it should be a function that accepts two arguments + x and y and returns a negative value if x < y, zero if x = y, or a positive + value if x > y. + + 1. Call the [[Get]] method of this object with argument "length". + 2. Call ToUint32(Result(1)). + 1. Perform an implementation-dependent sequence of calls to the + [[Get]] , [[Put]], and [[Delete]] methods of this object and + toSortCompare (described below), where the first argument for each call + to [[Get]], [[Put]] , or [[Delete]] is a nonnegative integer less + than Result(2) and where the arguments for calls to SortCompare are + results of previous calls to the [[Get]] method. After this sequence + is complete, this object must have the following two properties. + (1) There must be some mathematical permutation of the nonnegative + integers less than Result(2), such that for every nonnegative integer + j less than Result(2), if property old[j] existed, then new[(j)] is + exactly the same value as old[j],. but if property old[j] did not exist, + then new[(j)] either does not exist or exists with value undefined. + (2) If comparefn is not supplied or is a consistent comparison + function for the elements of this array, then for all nonnegative + integers j and k, each less than Result(2), if old[j] compares less + than old[k] (see SortCompare below), then (j) < (k). Here we use the + notation old[j] to refer to the hypothetical result of calling the [ + [Get]] method of this object with argument j before this step is + executed, and the notation new[j] to refer to the hypothetical result + of calling the [[Get]] method of this object with argument j after this + step has been completely executed. A function is a consistent + comparison function for a set of values if (a) for any two of those + values (possibly the same value) considered as an ordered pair, it + always returns the same value when given that pair of values as its + two arguments, and the result of applying ToNumber to this value is + not NaN; (b) when considered as a relation, where the pair (x, y) is + considered to be in the relation if and only if applying the function + to x and y and then applying ToNumber to the result produces a + negative value, this relation is a partial order; and (c) when + considered as a different relation, where the pair (x, y) is considered + to be in the relation if and only if applying the function to x and y + and then applying ToNumber to the result produces a zero value (of either + sign), this relation is an equivalence relation. In this context, the + phrase "x compares less than y" means applying Result(2) to x and y and + then applying ToNumber to the result produces a negative value. + 3.Return this object. + + When the SortCompare operator is called with two arguments x and y, the following steps are taken: + 1.If x and y are both undefined, return +0. + 2.If x is undefined, return 1. + 3.If y is undefined, return 1. + 4.If the argument comparefn was not provided in the call to sort, go to step 7. + 5.Call comparefn with arguments x and y. + 6.Return Result(5). + 7.Call ToString(x). + 8.Call ToString(y). + 9.If Result(7) < Result(8), return 1. + 10.If Result(7) > Result(8), return 1. + 11.Return +0. + + Note that, because undefined always compared greater than any other value, undefined and nonexistent + property values always sort to the end of the result. It is implementation-dependent whether or not such + properties will exist or not at the end of the array when the sort is concluded. + + Note that the sort function is intentionally generic; it does not require that its this value be an Array object. + Therefore it can be transferred to other kinds of objects for use as a method. Whether the sort function can be + applied successfully to a host object is implementation dependent . + + Author: christine@netscape.com + Date: 12 november 1997 +*/ + + +var SECTION = "15.4.4.5-2"; +var TITLE = "Array.prototype.sort(comparefn)"; + +writeHeaderToLog( SECTION + " "+ TITLE); + + +var S = new Array(); +var item = 0; + +// array is empty. +S[item++] = "var A = new Array()"; + +// array contains one item +S[item++] = "var A = new Array( true )"; + +// length of array is 2 +S[item++] = "var A = new Array( true, false, new Boolean(true), new Boolean(false), 'true', 'false' )"; + +S[item++] = "var A = new Array(); A[3] = 'undefined'; A[6] = null; A[8] = 'null'; A[0] = void 0"; + +S[item] = "var A = new Array( "; + +var limit = 0x0061; +for ( var i = 0x007A; i >= limit; i-- ) { + S[item] += "\'"+ String.fromCharCode(i) +"\'" ; + if ( i > limit ) { + S[item] += ","; + } +} + +S[item] += ")"; + +for ( var i = 0; i < S.length; i++ ) { + CheckItems( S[i] ); +} + +test(); + +function CheckItems( S ) { + eval( S ); + var E = Sort( A ); + + new TestCase( + S +"; A.sort(Compare); A.length", + E.length, + eval( S + "; A.sort(Compare); A.length") ); + + for ( var i = 0; i < E.length; i++ ) { + new TestCase( + "A["+i+ "].toString()", + E[i] +"", + A[i] +""); + + if ( A[i] == void 0 && typeof A[i] == "undefined" ) { + new TestCase( + "typeof A["+i+ "]", + typeof E[i], + typeof A[i] ); + } + } +} +function Object_1( value ) { + this.array = value.split(","); + this.length = this.array.length; + for ( var i = 0; i < this.length; i++ ) { + this[i] = eval(this.array[i]); + } + this.sort = Array.prototype.sort; + this.getClass = Object.prototype.toString; +} +function Sort( a ) { + var r1 = a.length; + for ( i = 0; i < a.length; i++ ) { + for ( j = i+1; j < a.length; j++ ) { + var lo = a[i]; + var hi = a[j]; + var c = Compare( lo, hi ); + if ( c == 1 ) { + a[i] = hi; + a[j] = lo; + } + } + } + return a; +} +function Compare( x, y ) { + if ( x == void 0 && y == void 0 && typeof x == "undefined" && typeof y == "undefined" ) { + return +0; + } + if ( x == void 0 && typeof x == "undefined" ) { + return 1; + } + if ( y == void 0 && typeof y == "undefined" ) { + return -1; + } + x = String(x); + y = String(y); + if ( x < y ) { + return 1; + } + if ( x > y ) { + return -1; + } + return 0; +} |