fullcalendar/tests/event-data/refetchEvents.js

describe('refetchEvents', function() {

	it('retains scroll when in month view', function() {
		var el = $('<div id="calendar" style="width:300px"/>').appendTo('body');
		var scrollEl;
		var scrollTop;

		initCalendar({
			defaultView: 'month',
			defaultDate: '2017-04-25',
			events: [
				{ start: '2017-04-04', title: 'event' },
				{ start: '2017-04-04', title: 'event' },
				{ start: '2017-04-04', title: 'event' },
				{ start: '2017-04-04', title: 'event' },
				{ start: '2017-04-04', title: 'event' },
				{ start: '2017-04-04', title: 'event' },
				{ start: '2017-04-04', title: 'event' },
				{ start: '2017-04-04', title: 'event' }
			]
		}, el);

		expect($('.fc-event').length).toBe(8);

		scrollEl = el.find('.fc-scroller');
		scrollEl.scrollTop(1000);
		scrollTop = scrollEl.scrollTop();

		// verify that we queried the correct scroller el
		expect(scrollTop).toBeGreaterThan(10);

		currentCalendar.refetchEvents();
		expect($('.fc-event').length).toBe(8);
		expect(scrollEl.scrollTop()).toBe(scrollTop);
	});
});