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

    beforeEach(ngModule('vnCore'));

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

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

    describe('data() setter', () => {
        it(`should set an array of events and convert string dates to string object, then call repaint() method`, () => {
            spyOn(controller, 'repaint');

            let currentDate = new Date().toString();
            controller.data = [
                {dated: currentDate, name: 'Event 1'},
                {dated: currentDate, name: 'Event 2'},
            ];

            expect(controller.events[0].dated instanceof Object).toBeTruthy();
            expect(controller.repaint).toHaveBeenCalledWith();
        });
    });

    describe('addEvent()', () => {
        it(`should add an event to an array of events`, () => {
            controller.events = [];
            controller.addEvent({
                dated: new Date(),
                name: 'My event'
            });
            const firstEvent = controller.events[0];

            expect(firstEvent.name).toEqual('My event');
            expect(firstEvent.isRemovable).toBeDefined();
            expect(firstEvent.isRemovable).toBeTruthy();
        });

        it(`should not repeat an event for the same date`, () => {
            const curDate = new Date();
            curDate.setHours(0, 0, 0, 0);

            controller.events = [{
                dated: curDate,
                name: 'My event 1'
            }];
            controller.addEvent({
                dated: curDate,
                name: 'My event 2'
            });

            const firstEvent = controller.events[0];

            expect(controller.events.length).toEqual(2);
            expect(firstEvent.name).toEqual('My event 1');
        });
    });

    describe('removeEvent()', () => {
        it(`should remove an event from an array of events`, () => {
            const curDate = new Date();
            controller._events = [{
                dated: curDate,
                name: 'My event 1',
                className: 'color'
            }];
            controller.removeEvent(curDate);

            expect(controller.events.length).toEqual(0);
        });
    });

    describe('moveNext()', () => {
        it(`should shift to the next n months, then emit a 'moveNext' event`, () => {
            spyOn(controller, 'emit');
            const currentMonth = controller.defaultDate.getMonth();
            let nextMonth = currentMonth + 1;

            controller.moveNext(1);

            expect(controller.defaultDate.getMonth()).toEqual(nextMonth);
            expect(controller.emit).toHaveBeenCalledWith('moveNext');
        });
    });

    describe('movePrevious()', () => {
        it(`should shift to the previous n months, then emit a 'movePrevious' event`, () => {
            spyOn(controller, 'emit');
            const currentMonth = controller.defaultDate.getMonth();
            let previousMonth = currentMonth - 1;

            controller.movePrevious(1);

            expect(controller.defaultDate.getMonth()).toEqual(previousMonth);
            expect(controller.emit).toHaveBeenCalledWith('movePrevious');
        });
    });

    describe('select()', () => {
        it(`should return the selected element, then emit a 'selection' event`, () => {
            spyOn(controller, 'emit');
            const days = [{dated: new Date()}];
            controller.days = days;

            controller.select(0);

            expect(controller.emit).toHaveBeenCalledWith('selection', {values: days});
        });
    });
});