Defaults are not inherited in backbone.js

gistfile1.js

suite('Bug', function() {

	suite('Backbone.js basic functionality', function() {
		test('Defaults are inherited', function() {
			var One = Backbone.Model.extend({
				defaults : {
					children : []
				}
			});
			var Two = One.extend();
			var Three = One.extend({
				defaults: {
					fubar : 'value'
				}
			});
			assert.ok((new One).has('children'), 'One has no children');
			assert.ok((new Two).has('children'), 'Two has no children');
			assert.ok((new Three).has('fubar'), 'Three has no fubar');
			assert.ok((new Three).has('children'), 'Three has no children');
		});
	});
});