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: print("ES5: Array.prototype.join");
michael@0: 
michael@0: /**************
michael@0:  * BEGIN TEST *
michael@0:  **************/
michael@0: 
michael@0: var count;
michael@0: var stringifyCounter = { toString: function() { count++; return "obj"; } };
michael@0: 
michael@0: var arr = [1, 2, 3, 4, 5];
michael@0: assertEq(arr.join(), "1,2,3,4,5");
michael@0: assertEq(arr.join(","), "1,2,3,4,5");
michael@0: assertEq(arr.join(undefined), "1,2,3,4,5");
michael@0: assertEq(arr.join(4), "142434445");
michael@0: assertEq(arr.join(""), "12345");
michael@0: 
michael@0: count = 0;
michael@0: assertEq(arr.join(stringifyCounter), "1obj2obj3obj4obj5");
michael@0: assertEq(count, 1);
michael@0: 
michael@0: var holey = [1, 2, , 4, 5];
michael@0: assertEq(holey.join(), "1,2,,4,5");
michael@0: assertEq(holey.join(","), "1,2,,4,5");
michael@0: assertEq(holey.join(undefined), "1,2,,4,5");
michael@0: assertEq(holey.join(4), "14244445");
michael@0: 
michael@0: count = 0;
michael@0: assertEq(holey.join(stringifyCounter), "1obj2objobj4obj5");
michael@0: assertEq(count, 1);
michael@0: 
michael@0: var nully = [1, 2, 3, null, 5];
michael@0: assertEq(nully.join(), "1,2,3,,5");
michael@0: assertEq(nully.join(","), "1,2,3,,5");
michael@0: assertEq(nully.join(undefined), "1,2,3,,5");
michael@0: assertEq(nully.join(4), "14243445");
michael@0: 
michael@0: count = 0;
michael@0: assertEq(nully.join(stringifyCounter), "1obj2obj3objobj5");
michael@0: assertEq(count, 1);
michael@0: 
michael@0: var undefiney = [1, undefined, 3, 4, 5];
michael@0: assertEq(undefiney.join(), "1,,3,4,5");
michael@0: assertEq(undefiney.join(","), "1,,3,4,5");
michael@0: assertEq(undefiney.join(undefined), "1,,3,4,5");
michael@0: assertEq(undefiney.join(4), "14434445");
michael@0: 
michael@0: count = 0;
michael@0: assertEq(undefiney.join(stringifyCounter), "1objobj3obj4obj5");
michael@0: assertEq(count, 1);
michael@0: 
michael@0: var log = '';
michael@0: arr = {length: {valueOf: function () { log += "L"; return 2; }},
michael@0:       0: "x", 1: "z"};
michael@0: var sep = {toString: function () { log += "S"; return "y"; }};
michael@0: assertEq(Array.prototype.join.call(arr, sep), "xyz");
michael@0: assertEq(log, "LS");
michael@0: 
michael@0: var funky =
michael@0:   {
michael@0:     toString: function()
michael@0:     {
michael@0:       Array.prototype[1] = "chorp";
michael@0:       Object.prototype[3] = "fnord";
michael@0:       return "funky";
michael@0:     }
michael@0:   };
michael@0: var trailingHoles = [0, funky, /* 2 */, /* 3 */,];
michael@0: assertEq(trailingHoles.join(""), "0funkyfnord");
michael@0: 
michael@0: /******************************************************************************/
michael@0: 
michael@0: if (typeof reportCompare === "function")
michael@0:   reportCompare(true, true);
michael@0: 
michael@0: print("Tests complete");