Mock date constructor with Jasmine

from jasmine example,

jasmine.clock().install();
var baseTime = new Date(2013, 9, 23);
jasmine.clock().mockDate(baseTime);
jasmine.clock().tick(50)
expect(new Date().getTime()).toEqual(baseTime.getTime() + 50);


afterEach(function () {
    jasmine.clock().uninstall();
});

jasmine date