mirror of
https://gitlab.winehq.org/wine/wine-gecko.git
synced 2024-09-13 09:24:08 -07:00
41 lines
1.2 KiB
JavaScript
41 lines
1.2 KiB
JavaScript
_("Make sure lazy constructor calling/assignment works");
|
|
Cu.import("resource://services-sync/util.js");
|
|
|
|
function run_test() {
|
|
let count = 0;
|
|
let Foo = function() {
|
|
this.num = ++count;
|
|
}
|
|
|
|
_("Make a thing instance of Foo but make sure it isn't initialized yet");
|
|
let obj = {};
|
|
Utils.lazy(obj, "thing", Foo);
|
|
do_check_eq(count, 0);
|
|
|
|
_("Access the property to make it construct");
|
|
do_check_eq(typeof obj.thing, "object");
|
|
do_check_eq(obj.thing.constructor, Foo);
|
|
do_check_eq(count, 1);
|
|
do_check_eq(obj.thing.num, 1);
|
|
|
|
_("Additional accesses don't construct again (nothing should change");
|
|
do_check_eq(typeof obj.thing, "object");
|
|
do_check_eq(obj.thing.constructor, Foo);
|
|
do_check_eq(count, 1);
|
|
do_check_eq(obj.thing.num, 1);
|
|
|
|
_("More lazy properties will constrct more");
|
|
do_check_eq(typeof obj.other, "undefined");
|
|
Utils.lazy(obj, "other", Foo);
|
|
do_check_eq(typeof obj.other, "object");
|
|
do_check_eq(obj.other.constructor, Foo);
|
|
do_check_eq(count, 2);
|
|
do_check_eq(obj.other.num, 2);
|
|
|
|
_("Sanity check that the original property didn't change");
|
|
do_check_eq(typeof obj.thing, "object");
|
|
do_check_eq(obj.thing.constructor, Foo);
|
|
do_check_eq(count, 2);
|
|
do_check_eq(obj.thing.num, 1);
|
|
}
|