mixin.js
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'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");
};