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

    beforeEach(ngModule('vnCore'));

    beforeEach(inject(($compile, $rootScope, $document) => {
        $element = $compile(`<vn-popover>test</vn-popover>`)($rootScope);
        $document.find('body').append($element);
        controller = $element.controller('vnPopover');

        $parent = angular.element('<div/>');
        $document.find('body').append($parent);
    }));

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

    describe('show()', () => {
        it(`should enable the shown property and emit the open event`, () => {
            spyOn(controller, 'emit');
            controller.show();

            expect(controller.shown).toBeTruthy();
            expect(controller.emit).toHaveBeenCalledWith('open');
        });

        it(`should do nothing if it's already shown`, () => {
            controller.shown = true;
            spyOn(controller, 'emit');
            controller.show();

            expect(controller.emit).not.toHaveBeenCalledWith('open');
        });

        it(`should check that popover is visible into the screen`, () => {
            $parent.css({
                backgroundColor: 'red',
                position: 'absolute',
                width: '50px',
                height: '50px',
                top: '0',
                left: '100px'
            });
            controller.show($parent[0]);

            let rect = controller.popover.getBoundingClientRect();
            let style = controller.window.getComputedStyle(controller.element);

            expect(style.visibility).toEqual('visible');
            expect(style.display).not.toEqual('none');

            expect(0).toBeLessThanOrEqual(rect.top);
            expect(0).toBeLessThanOrEqual(rect.left);
            expect(controller.window.innerHeight).toBeGreaterThan(rect.bottom);
            expect(controller.window.innerWidth).toBeGreaterThan(rect.right);
        });
    });

    describe('hide()', () => {
        it(`should disable the shown property and emit the close event`, inject($timeout => {
            controller.show();
            spyOn(controller, 'emit');
            controller.hide();
            $timeout.flush();

            expect(controller.shown).toBeFalsy();
            expect(controller.emit).toHaveBeenCalledWith('close');
        }));

        it(`should do nothing if it's already hidden`, () => {
            controller.shown = false;
            spyOn(controller, 'emit');
            controller.hide();

            expect(controller.emit).not.toHaveBeenCalledWith('close');
        });
    });
});