michael@0: _("Make sure various combinations of deferGetSet arguments correctly defer getting/setting properties to another object");
michael@0: Cu.import("resource://services-sync/util.js");
michael@0: 
michael@0: function run_test() {
michael@0:   let base = function() {};
michael@0:   base.prototype = {
michael@0:     dst: {},
michael@0: 
michael@0:     get a() "a",
michael@0:     set b(val) this.dst.b = val + "!!!"
michael@0:   };
michael@0:   let src = new base();
michael@0: 
michael@0:   _("get/set a single property");
michael@0:   Utils.deferGetSet(base, "dst", "foo");
michael@0:   src.foo = "bar";
michael@0:   do_check_eq(src.dst.foo, "bar");
michael@0:   do_check_eq(src.foo, "bar");
michael@0: 
michael@0:   _("editing the target also updates the source");
michael@0:   src.dst.foo = "baz";
michael@0:   do_check_eq(src.dst.foo, "baz");
michael@0:   do_check_eq(src.foo, "baz");
michael@0: 
michael@0:   _("handle multiple properties");
michael@0:   Utils.deferGetSet(base, "dst", ["p1", "p2"]);
michael@0:   src.p1 = "v1";
michael@0:   src.p2 = "v2";
michael@0:   do_check_eq(src.p1, "v1");
michael@0:   do_check_eq(src.dst.p1, "v1");
michael@0:   do_check_eq(src.p2, "v2");
michael@0:   do_check_eq(src.dst.p2, "v2");
michael@0: 
michael@0:   _("make sure existing getter keeps its functionality");
michael@0:   Utils.deferGetSet(base, "dst", "a");
michael@0:   src.a = "not a";
michael@0:   do_check_eq(src.dst.a, "not a");
michael@0:   do_check_eq(src.a, "a");
michael@0: 
michael@0:   _("make sure existing setter keeps its functionality");
michael@0:   Utils.deferGetSet(base, "dst", "b");
michael@0:   src.b = "b";
michael@0:   do_check_eq(src.dst.b, "b!!!");
michael@0:   do_check_eq(src.b, "b!!!");
michael@0: }