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 = 562448;
michael@0: var summary = 'Function.prototype.apply should accept any arraylike arguments';
michael@0: print(BUGNUMBER + ": " + summary);
michael@0: 
michael@0: /**************
michael@0:  * BEGIN TEST *
michael@0:  **************/
michael@0: 
michael@0: function expectTypeError(fun, msg)
michael@0: {
michael@0:   try
michael@0:   {
michael@0:     fun();
michael@0:     assertEq(true, false, "should have thrown a TypeError");
michael@0:   }
michael@0:   catch (e)
michael@0:   {
michael@0:     assertEq(e instanceof TypeError, true, msg + "; instead threw " + e);
michael@0:   }
michael@0: }
michael@0: 
michael@0: function fun() { }
michael@0: 
michael@0: var global = this;
michael@0: 
michael@0: 
michael@0: /* Step 1. */
michael@0: var nonfuns = [null, 1, -1, 2.5, "[[Call]]", undefined, true, false, {}];
michael@0: for (var i = 0, sz = nonfuns.length; i < sz; i++)
michael@0: {
michael@0:   var f = function()
michael@0:   {
michael@0:     Function.prototype.apply.apply(nonfuns[i], [1, 2, 3]);
michael@0:   };
michael@0:   var msg =
michael@0:     "expected TypeError calling Function.prototype.apply with uncallable this";
michael@0:   expectTypeError(f, msg);
michael@0: }
michael@0: 
michael@0: 
michael@0: /* Step 2. */
michael@0: var thisObj = {};
michael@0: 
michael@0: var currentThis, currentThisBox;
michael@0: function funLength()
michael@0: {
michael@0:   assertEq(arguments.length, 0, "should have been called with no arguments");
michael@0:   assertEq(this, currentThis, "wrong this");
michael@0: }
michael@0: function strictFunLength()
michael@0: {
michael@0:   "use strict";
michael@0:   assertEq(arguments.length, 0, "should have been called with no arguments");
michael@0:   assertEq(this, currentThis, "wrong this");
michael@0: }
michael@0: 
michael@0: currentThis = global;
michael@0: funLength.apply();
michael@0: funLength.apply(undefined);
michael@0: funLength.apply(undefined, undefined);
michael@0: funLength.apply(undefined, null);
michael@0: 
michael@0: currentThis = undefined;
michael@0: strictFunLength.apply();
michael@0: strictFunLength.apply(undefined);
michael@0: strictFunLength.apply(undefined, undefined);
michael@0: strictFunLength.apply(undefined, null);
michael@0: 
michael@0: currentThis = null;
michael@0: strictFunLength.apply(null);
michael@0: strictFunLength.apply(null, undefined);
michael@0: strictFunLength.apply(null, null);
michael@0: 
michael@0: currentThis = thisObj;
michael@0: funLength.apply(thisObj);
michael@0: funLength.apply(thisObj, null);
michael@0: funLength.apply(thisObj, undefined);
michael@0: strictFunLength.apply(thisObj);
michael@0: strictFunLength.apply(thisObj, null);
michael@0: strictFunLength.apply(thisObj, undefined);
michael@0: 
michael@0: currentThis = 17;
michael@0: strictFunLength.apply(17);
michael@0: strictFunLength.apply(17, null);
michael@0: strictFunLength.apply(17, undefined);
michael@0: 
michael@0: function funThisPrimitive()
michael@0: {
michael@0:   assertEq(arguments.length, 0, "should have been called with no arguments");
michael@0:   assertEq(this instanceof currentThisBox, true,
michael@0:            "this not instanceof " + currentThisBox);
michael@0:   assertEq(this.valueOf(), currentThis,
michael@0:            "wrong this valueOf()");
michael@0: }
michael@0: 
michael@0: currentThis = 17;
michael@0: currentThisBox = Number;
michael@0: funThisPrimitive.apply(17);
michael@0: funThisPrimitive.apply(17, undefined);
michael@0: funThisPrimitive.apply(17, null);
michael@0: 
michael@0: currentThis = "foopy";
michael@0: currentThisBox = String;
michael@0: funThisPrimitive.apply("foopy");
michael@0: funThisPrimitive.apply("foopy", undefined);
michael@0: funThisPrimitive.apply("foopy", null);
michael@0: 
michael@0: currentThis = false;
michael@0: currentThisBox = Boolean;
michael@0: funThisPrimitive.apply(false);
michael@0: funThisPrimitive.apply(false, undefined);
michael@0: funThisPrimitive.apply(false, null);
michael@0: 
michael@0: 
michael@0: /* Step 3. */
michael@0: var nonobjs = [1, -1, 2.5, "[[Call]]", true, false];
michael@0: for (var i = 0, sz = nonobjs.length; i < sz; i++)
michael@0: {
michael@0:   var f = function() { fun.apply(thisObj, nonobjs[i]); };
michael@0:   var msg = "should have thrown a TypeError with non-object arguments";
michael@0:   expectTypeError(f, msg);
michael@0: }
michael@0: 
michael@0: 
michael@0: /* Step 4. */
michael@0: var args = { get length() { throw 42; } };
michael@0: try
michael@0: {
michael@0:   fun.apply(thisObj, args);
michael@0: }
michael@0: catch (e)
michael@0: {
michael@0:   assertEq(e, 42, "didn't throw result of [[Get]] on arguments object");
michael@0: }
michael@0: 
michael@0: 
michael@0: /*
michael@0:  * NB: There was an erratum removing the steps numbered 5 and 7 in the original
michael@0:  *     version of ES5; see also the comments in js_fun_apply.
michael@0:  */
michael@0: 
michael@0: /* Step 5. */
michael@0: var called = false;
michael@0: var argsObjectLength =
michael@0:   { length: { valueOf: function() { called = true; return 17; } } };
michael@0: 
michael@0: fun.apply({}, argsObjectLength);
michael@0: assertEq(called, true, "should have been set in valueOf called via ToUint32");
michael@0: 
michael@0: var upvar = "unset";
michael@0: var argsObjectPrimitiveLength =
michael@0:   {
michael@0:     length:
michael@0:       {
michael@0:         valueOf: function() { upvar = "valueOf"; return {}; },
michael@0:         toString: function()
michael@0:         {
michael@0:           upvar = upvar === "valueOf" ? "both" : "toString";
michael@0:           return 17;
michael@0:         }
michael@0:       }
michael@0:   };
michael@0: fun.apply({}, argsObjectPrimitiveLength);
michael@0: assertEq(upvar, "both", "didn't call all hooks properly");
michael@0: 
michael@0: 
michael@0: /* Step 6-9. */
michael@0: var seenThis, res, steps;
michael@0: var argsAccessors =
michael@0:   {
michael@0:     length: 4,
michael@0:     get 0() { steps.push("0"); return 1; },
michael@0:     get 1() { steps.push("1"); return 2; },
michael@0:     // make sure values shine through holes
michael@0:     get 3() { steps.push("3"); return 8; },
michael@0:   };
michael@0: 
michael@0: Object.prototype[2] = 729;
michael@0: 
michael@0: seenThis = "not seen";
michael@0: function argsAsArray()
michael@0: {
michael@0:   seenThis = this;
michael@0:   steps.push(Math.PI);
michael@0:   return Array.prototype.map.call(arguments, function(v) { return v; });
michael@0: }
michael@0: 
michael@0: steps = [];
michael@0: res = argsAsArray.apply(thisObj, argsAccessors);
michael@0: assertEq(seenThis, thisObj, "saw wrong this");
michael@0: 
michael@0: assertEq(steps.length, 4, "wrong steps: " + steps);
michael@0: assertEq(steps[0], "0", "bad step 0");
michael@0: assertEq(steps[1], "1", "bad step 1");
michael@0: assertEq(steps[2], "3", "bad step 3");
michael@0: assertEq(steps[3], Math.PI, "bad last step");
michael@0: 
michael@0: assertEq(res.length, 4, "wrong return: " + res);
michael@0: assertEq(res[0], 1, "wrong ret[0]");
michael@0: assertEq(res[1], 2, "wrong ret[0]");
michael@0: assertEq(res[2], 729, "wrong ret[0]");
michael@0: assertEq(res[3], 8, "wrong ret[0]");
michael@0: 
michael@0: seenThis = "not seen";
michael@0: function strictArgsAsArray()
michael@0: {
michael@0:   "use strict";
michael@0:   seenThis = this;
michael@0:   steps.push(NaN);
michael@0:   return Array.prototype.map.call(arguments, function(v) { return v; });
michael@0: }
michael@0: 
michael@0: steps = [];
michael@0: res = strictArgsAsArray.apply(null, argsAccessors);
michael@0: assertEq(seenThis, null, "saw wrong this");
michael@0: 
michael@0: assertEq(steps.length, 4, "wrong steps: " + steps);
michael@0: assertEq(steps[0], "0", "bad step 0");
michael@0: assertEq(steps[1], "1", "bad step 1");
michael@0: assertEq(steps[2], "3", "bad step 3");
michael@0: assertEq(steps[3], 0 / 0, "bad last step");
michael@0: 
michael@0: assertEq(res.length, 4, "wrong return: " + res);
michael@0: assertEq(res[0], 1, "wrong ret[0]");
michael@0: assertEq(res[1], 2, "wrong ret[0]");
michael@0: assertEq(res[2], 729, "wrong ret[0]");
michael@0: assertEq(res[3], 8, "wrong ret[0]");
michael@0: 
michael@0: strictArgsAsArray.apply(17, argsAccessors);
michael@0: assertEq(seenThis, 17, "saw wrong this");
michael@0: 
michael@0: /******************************************************************************/
michael@0: 
michael@0: if (typeof reportCompare === "function")
michael@0:   reportCompare(true, true);
michael@0: 
michael@0: print("All tests passed!");