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function testBasic() {
var thisVal = {};
var arr = [1, 2, 3];
var f = function() {
assertEq(this, thisVal);
assertEq(arguments.length, 0);
return 456;
};
for (var i = 0; i < 100; i++) {
// Scripted callee.
assertEq(f.apply(thisVal), 456);
assertEq(f.apply(thisVal), 456);
assertEq(f.apply(thisVal, null), 456);
assertEq(f.apply(thisVal, undefined), 456);
// Native callee.
assertEq(Math.abs.apply(), NaN);
assertEq(Math.abs.apply(null), NaN);
assertEq(Math.abs.apply(null, null), NaN);
assertEq(Array.prototype.join.apply(arr), "1,2,3");
assertEq(Array.prototype.join.apply(arr, null), "1,2,3");
assertEq(Array.prototype.join.apply(arr, undefined), "1,2,3");
}
}
testBasic();
function testUndefinedGuard() {
var f = function() { return arguments.length; }
var arr = [-5, 5];
for (var i = 0; i < 100; i++) {
var args = i < 50 ? undefined : arr;
assertEq(f.apply(null, args), i < 50 ? 0 : 2);
assertEq(Math.abs.apply(null, args), i < 50 ? NaN : 5);
}
}
testUndefinedGuard();
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