import './paging.js';

describe('Component vnPaging', () => {
    let $scope;
    let controller;

    beforeEach(ngModule('vnCore'));

    beforeEach(angular.mock.inject(($componentController, $rootScope) => {
        $scope = $rootScope.$new();
        controller = $componentController('vnPaging', {$scope});
    }));

    describe('$onChanges()', () => {
        it(`should define numberPage and currentPage based on index.filter properties`, () => {
            controller.index = {filter: {size: 'something', page: 'something else'}};
            controller.$onChanges({index: 'simpleChange', currentValue: 'current value', previousValue: 'previous value'});

            expect(controller.numPerPage).toBe(controller.index.filter.size);
            expect(controller.currentPage).toEqual(controller.index.filter.page);
        });

        it(`should define numItems based on changes.total.currentValue`, () => {
            controller.index = {filter: {size: 'something', page: 'something else'}};
            controller.$onChanges({total: {currentValue: 'current value'}});

            expect(controller.numItems).toEqual('current value');
        });
    });

    describe('onModelUpdated()', () => {
        it(`should define controllers numItems as the result of page times size plus one`, () => {
            controller.numPerPage = 2;
            controller.index = {
                filter: {size: 10, page: 10},
                model: ['one mother..', 'another model..', 'last model..']
            };
            controller.onModelUpdated();

            expect(controller.numItems).toBe(101);
        });
    });

    describe('onPageChange()', () => {
        it(`should call accept() since pageChange property is undefined`, () => {
            controller.index = {accept: () => {}, filter: {page: 0}};
            spyOn(controller.index, 'accept');
            controller.onPageChange(100);

            expect(controller.index.accept).toHaveBeenCalledWith();
        });

        it(`should call pageChange() since pageChange property isn't undefined`, () => {
            controller.index = {accept: () => {}, filter: {page: 0}};
            controller.pageChange = true;
            spyOn(controller, 'pageChange');
            controller.onPageChange(100);

            expect(controller.pageChange).toHaveBeenCalledWith();
        });
    });
});