describe('Component vnCalendar', () => {
    let controller;
    let $element;

    let date = new Date();
    date.setHours(0, 0, 0, 0);
    date.setDate(1);

    beforeEach(ngModule('vnCore'));

    beforeEach(inject(($compile, $rootScope) => {
        $element = $compile(`<vn-calendar></vn-calendar`)($rootScope);
        controller = $element.controller('vnCalendar');
        controller.defaultDate = date;
    }));

    afterEach(() => {
        $element.remove();
    });

    describe('moveNext()', () => {
        it(`should shift to the next month, then emit a 'move' event`, () => {
            spyOn(controller, 'emit');
            let nextMonth = new Date(date.getTime());
            nextMonth.setMonth(nextMonth.getMonth() + 1);

            controller.moveNext();

            expect(controller.month).toEqual(nextMonth.getMonth());
            expect(controller.emit).toHaveBeenCalledWith('move', {$date: nextMonth});
        });
    });

    describe('movePrevious()', () => {
        it(`should shift to the previous month, then emit a 'move' event`, () => {
            spyOn(controller, 'emit');
            let previousMonth = new Date(date.getTime());
            previousMonth.setMonth(previousMonth.getMonth() - 1);

            controller.movePrevious();

            expect(controller.month).toEqual(previousMonth.getMonth());
            expect(controller.emit).toHaveBeenCalledWith('move', {$date: previousMonth});
        });
    });

    describe('select()', () => {
        it(`should return the selected element, then emit a 'selection' event`, () => {
            spyOn(controller, 'emit');

            const day = new Date();
            day.setHours(0, 0, 0, 0);
            controller.select(day);

            let res = {
                $days: [day],
                $type: 'day'
            };

            expect(controller.field).toEqual(day);
            expect(controller.emit).toHaveBeenCalledWith('selection', res);
        });
    });
});