"use strict";

module.exports = function (t, a) {
	var o, o1, o2, x, y = {}, z = {};
	o = { inherited: true };
	o1 = Object.create(o);
	o1.visible = z;
	o1.nonremovable = "raz";
	Object.defineProperty(o1, "hidden", { value: "hidden" });

	o2 = Object.defineProperties({}, { nonremovable: { value: y } });
	o2.other = "other";

	try { t(o2, o1); }
	catch (ignore) {}

	a(o2.visible, z, "Enumerable");
	a(o1.hidden, "hidden", "Not Enumerable");
	a(o2.propertyIsEnumerable("visible"), true, "Enumerable is enumerable");
	a(o2.propertyIsEnumerable("hidden"), false, "Not enumerable is not enumerable");

	a(o2.hasOwnProperty("inherited"), false, "Extend only own");
	a(o2.inherited, undefined, "Extend ony own: value");

	a(o2.nonremovable, y, "Do not overwrite non configurable");
	a(o2.other, "other", "Own kept");

	x = {};
	t(x, o2);
	try { t(x, o1); }
	catch (ignore) {}

	a(x.visible, z, "Enumerable");
	a(x.hidden, "hidden", "Not Enumerable");
	a(x.propertyIsEnumerable("visible"), true, "Enumerable is enumerable");
	a(x.propertyIsEnumerable("hidden"), false, "Not enumerable is not enumerable");

	a(x.hasOwnProperty("inherited"), false, "Extend only own");
	a(x.inherited, undefined, "Extend ony own: value");

	a(x.nonremovable, y, "Ignored non configurable");
	a(x.other, "other", "Other");

	x.visible = 3;
	a(x.visible, 3, "Writable is writable");

	x = {};
	t(x, o1);
	a.throws(function () { x.hidden = 3; }, "Not writable is not writable");

	x = {};
	t(x, o1);
	delete x.visible;
	a.ok(!x.hasOwnProperty("visible"), "Configurable is configurable");

	x = {};
	t(x, o1);
	a.throws(function () { delete x.hidden; }, "Not configurable is not configurable");

	x = Object.defineProperty({}, "foo", {
		configurable: false,
		writable: true,
		enumerable: false,
		value: "bar"
	});

	try { t(x, { foo: "lorem" }); }
	catch (ignore) {}
	a(x.foo, "bar", "Writable, not enumerable");
};