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function makeThing(i)
{
var thing = {};
thing.foo = i;
thing.bar = "bar_" + i;
Object.defineProperty(thing, 'baz', {'configurable':false, 'value':[i]});
return thing;
}
function makeArray(count)
{
var arr = new Array(count);
for(var i = 0; i < count; i++) {
arr[i] = makeThing(i);
}
return arr;
}
function delBar(obj)
{
assertEq(Object.getOwnPropertyDescriptor(obj, 'bar') === undefined, false);
assertEq(delete obj.bar, true);
assertEq(Object.getOwnPropertyDescriptor(obj, 'bar') === undefined, true);
}
function delBaz(obj)
{
var s = delete obj.baz;
assertEq(Object.getOwnPropertyDescriptor(obj, 'baz') === undefined, false);
assertEq(delete obj.baz, false);
assertEq(Object.getOwnPropertyDescriptor(obj, 'baz') === undefined, false);
}
function delNonexistentThingy(obj)
{
assertEq(Object.getOwnPropertyDescriptor(obj, 'thingy') === undefined, true);
assertEq(delete obj.thingy, true);
assertEq(Object.getOwnPropertyDescriptor(obj, 'thingy') === undefined, true);
}
function testDelProp()
{
var arr = makeArray(10000);
for(var i = 0; i < 10000; i++) {
var obj = arr[i];
assertEq(Object.getOwnPropertyDescriptor(obj, 'foo') === undefined, false);
assertEq(delete obj.foo, true);
assertEq(Object.getOwnPropertyDescriptor(obj, 'foo') === undefined, true);
delBar(obj);
delBaz(obj);
delNonexistentThingy(obj);
}
}
testDelProp();
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